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  • Controlling the Sizing of the af:messages Dialog

    - by Duncan Mills
    Over the last day or so a small change in behaviour between 11.1.2.n releases of ADF and earlier versions has come to my attention. This has concerned the default sizing of the dialog that the framework automatically generates to handle the display of JSF messages being handled by the <af:messages> component. Unlike a normal popup, you don't have a physical <af:dialog> or <af:window> to set the sizing on in your page definition, so you're at the mercy of what the framework provides. In this case the framework now defines a fixed 250x250 pixel content area dialog for these messages, which can look a bit weird if the message is either very short, or very long. Unfortunately this is not something that you can control through the skin, instead you have to be a little more creative. Here's the solution I've come up with.  Unfortunately, I've not found a supportable way to reset the dialog so as to say  just size yourself based on your contents, it is actually possible to do this by tweaking the correct DOM objects, but I wanted to start with a mostly supportable solution that only uses the best practice of working through the ADF client side APIs. The Technique The basic approach I've taken is really very simple.  The af:messages dialog is just a normal richDialog object, it just happens to be one that is pre-defined for you with a particular known name "msgDlg" (which hopefully won't change). Knowing this, you can call the accepted APIs to control the content width and height of that dialog, as our meerkat friends would say, "simples" 1 The JavaScript For this example I've defined three JavaScript functions.   The first does all the hard work and is designed to be called from server side Java or from a page load event to set the default. The second is a utility function used by the first to validate the values you're about to use for height and width. The final function is one that can be called from the page load event to set an initial default sizing if that's all you need to do. Function resizeDefaultMessageDialog() /**  * Function that actually resets the default message dialog sizing.  * Note that the width and height supplied define the content area  * So the actual physical dialog size will be larger to account for  * the chrome containing the header / footer etc.  * @param docId Faces component id of the document  * @param contentWidth - new content width you need  * @param contentHeight - new content height  */ function resizeDefaultMessageDialog(docId, contentWidth, contentHeight) {   // Warning this value may change from release to release   var defMDName = "::msgDlg";   //Find the default messages dialog   msgDialogComponent = AdfPage.PAGE.findComponentByAbsoluteId(docId + defMDName); // In your version add a check here to ensure we've found the right object!   // Check the new width is supplied and is a positive number, if so apply it.   if (dimensionIsValid(contentWidth)){       msgDialogComponent.setContentWidth(contentWidth);   }   // Check the new height is supplied and is a positive number, if so apply it.   if (dimensionIsValid(contentHeight)){       msgDialogComponent.setContentHeight(contentHeight);   } }  Function dimensionIsValid()  /**  * Simple function to check that sensible numeric values are   * being proposed for a dimension  * @param sampleDimension   * @return booolean  */ function dimensionIsValid(sampleDimension){     return (!isNaN(sampleDimension) && sampleDimension > 0); } Function  initializeDefaultMessageDialogSize() /**  * This function will re-define the default sizing applied by the framework   * in 11.1.2.n versions  * It is designed to be called with the document onLoad event  */ function initializeDefaultMessageDialogSize(loadEvent){   //get the configuration information   var documentId = loadEvent.getSource().getProperty('documentId');   var newWidth = loadEvent.getSource().getProperty('defaultMessageDialogContentWidth');   var newHeight = loadEvent.getSource().getProperty('defaultMessageDialogContentHeight');   resizeDefaultMessageDialog(documentId, newWidth, newHeight); } Wiring in the Functions As usual, the first thing we need to do when using JavaScript with ADF is to define an af:resource  in the document metaContainer facet <af:document>   ....     <f:facet name="metaContainer">     <af:resource type="javascript" source="/resources/js/hackMessagedDialog.js"/>    </f:facet> </af:document> This makes the script functions available to call.  Next if you want to use the option of defining an initial default size for the dialog you use a combination of <af:clientListener> and <af:clientAttribute> tags like this. <af:document title="MyApp" id="doc1">   <af:clientListener method="initializeDefaultMessageDialogSize" type="load"/>   <af:clientAttribute name="documentId" value="doc1"/>   <af:clientAttribute name="defaultMessageDialogContentWidth" value="400"/>   <af:clientAttribute name="defaultMessageDialogContentHeight" value="150"/>  ...   Just in Time Dialog Sizing  So  what happens if you have a variety of messages that you might add and in some cases you need a small dialog and an other cases a large one? Well in that case you can re-size these dialogs just before you submit the message. Here's some example Java code: FacesContext ctx = FacesContext.getCurrentInstance();          //reset the default dialog size for this message ExtendedRenderKitService service =              Service.getRenderKitService(ctx, ExtendedRenderKitService.class); service.addScript(ctx, "resizeDefaultMessageDialog('doc1',100,50);");          FacesMessage msg = new FacesMessage("Short message"); msg.setSeverity(FacesMessage.SEVERITY_ERROR); ctx.addMessage(null, msg);  So there you have it. This technique should, at least, allow you to control the dialog sizing just enough to stop really objectionable whitespace or scrollbars. 1 Don't worry if you don't get the reference, lest's just say my kids watch too many adverts.

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  • Problem Implementing Texture on Libgdx Mesh of Randomized Terrain

    - by BrotherJack
    I'm having problems understanding how to apply a texture to a non-rectangular object. The following code creates textures such as this: from the debug renderer I think I've got the physical shape of the "earth" correct. However, I don't know how to apply a texture to it. I have a 50x50 pixel image (in the environment constructor as "dirt.png"), that I want to apply to the hills. I have a vague idea that this seems to involve the mesh class and possibly a ShapeRenderer, but the little i'm finding online is just confusing me. Bellow is code from the class that makes and regulates the terrain and the code in a separate file that is supposed to render it (but crashes on the mesh.render() call). Any pointers would be appreciated. public class Environment extends Actor{ Pixmap sky; public Texture groundTexture; Texture skyTexture; double tankypos; //TODO delete, temp public Tank etank; //TODO delete, temp int destructionRes; // how wide is a static pixel private final float viewWidth; private final float viewHeight; private ChainShape terrain; public Texture dirtTexture; private World world; public Mesh terrainMesh; private static final String LOG = Environment.class.getSimpleName(); // Constructor public Environment(Tank tank, FileHandle sfileHandle, float w, float h, int destructionRes) { world = new World(new Vector2(0, -10), true); this.destructionRes = destructionRes; sky = new Pixmap(sfileHandle); viewWidth = w; viewHeight = h; skyTexture = new Texture(sky); terrain = new ChainShape(); genTerrain((int)w, (int)h, 6); Texture tankSprite = new Texture(Gdx.files.internal("TankSpriteBase.png")); Texture turretSprite = new Texture(Gdx.files.internal("TankSpriteTurret.png")); tank = new Tank(0, true, tankSprite, turretSprite); Rectangle tankrect = new Rectangle(300, (int)tankypos, 44, 45); tank.setRect(tankrect); BodyDef terrainDef = new BodyDef(); terrainDef.type = BodyType.StaticBody; terrainDef.position.set(0, 0); Body terrainBody = world.createBody(terrainDef); FixtureDef fixtureDef = new FixtureDef(); fixtureDef.shape = terrain; terrainBody.createFixture(fixtureDef); BodyDef tankDef = new BodyDef(); Rectangle rect = tank.getRect(); tankDef.type = BodyType.DynamicBody; tankDef.position.set(0,0); tankDef.position.x = rect.x; tankDef.position.y = rect.y; Body tankBody = world.createBody(tankDef); FixtureDef tankFixture = new FixtureDef(); PolygonShape shape = new PolygonShape(); shape.setAsBox(rect.width*WORLD_TO_BOX, rect.height*WORLD_TO_BOX); fixtureDef.shape = shape; dirtTexture = new Texture(Gdx.files.internal("dirt.png")); etank = tank; } private void genTerrain(int w, int h, int hillnessFactor){ int width = w; int height = h; Random rand = new Random(); //min and max bracket the freq's of the sin/cos series //The higher the max the hillier the environment int min = 1; //allocating horizon for screen width Vector2[] horizon = new Vector2[width+2]; horizon[0] = new Vector2(0,0); double[] skyline = new double[width]; //TODO skyline necessary as an array? //ratio of amplitude of screen height to landscape variation double r = (int) 2.0/5.0; //number of terms to be used in sine/cosine series int n = 4; int[] f = new int[n*2]; //calculating omegas for sine series for(int i = 0; i < n*2 ; i ++){ f[i] = rand.nextInt(hillnessFactor - min + 1) + min; } //amp is the amplitude of the series int amp = (int) (r*height); double lastPoint = 0.0; for(int i = 0 ; i < width; i ++){ skyline[i] = 0; for(int j = 0; j < n; j++){ skyline[i] += ( Math.sin( (f[j]*Math.PI*i/height) ) + Math.cos(f[j+n]*Math.PI*i/height) ); } skyline[i] *= amp/(n*2); skyline[i] += (height/2); skyline[i] = (int)skyline[i]; //TODO Possible un-necessary float to int to float conversions tankypos = skyline[i]; horizon[i+1] = new Vector2((float)i, (float)skyline[i]); if(i == width) lastPoint = skyline[i]; } horizon[width+1] = new Vector2(800, (float)lastPoint); terrain.createChain(horizon); terrain.createLoop(horizon); //I have no idea if the following does anything useful :( terrainMesh = new Mesh(true, (width+2)*2, (width+2)*2, new VertexAttribute(Usage.Position, (width+2)*2, "a_position")); float[] vertices = new float[(width+2)*2]; short[] indices = new short[(width+2)*2]; for(int i=0; i < (width+2); i+=2){ vertices[i] = horizon[i].x; vertices[i+1] = horizon[i].y; indices[i] = (short)i; indices[i+1] = (short)(i+1); } terrainMesh.setVertices(vertices); terrainMesh.setIndices(indices); } Here is the code that is (supposed to) render the terrain. @Override public void render(float delta) { Gdx.gl.glClearColor(1, 1, 1, 1); Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT); // tell the camera to update its matrices. camera.update(); // tell the SpriteBatch to render in the // coordinate system specified by the camera. backgroundStage.draw(); backgroundStage.act(delta); uistage.draw(); uistage.act(delta); batch.begin(); debugRenderer.render(this.ground.getWorld(), camera.combined); batch.end(); //Gdx.graphics.getGL10().glEnable(GL10.GL_TEXTURE_2D); ground.dirtTexture.bind(); ground.terrainMesh.render(GL10.GL_TRIANGLE_FAN); //I'm particularly lost on this ground.step(); }

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  • Restructuring a large Chrome Extension/WebApp

    - by A.M.K
    I have a very complex Chrome Extension that has gotten too large to maintain in its current format. I'd like to restructure it, but I'm 15 and this is the first webapp or extension of it's type I've built so I have no idea how to do it. TL;DR: I have a large/complex webapp I'd like to restructure and I don't know how to do it. Should I follow my current restructure plan (below)? Does that sound like a good starting point, or is there a different approach that I'm missing? Should I not do any of the things I listed? While it isn't relevant to the question, the actual code is on Github and the extension is on the webstore. The basic structure is as follows: index.html <html> <head> <link href="css/style.css" rel="stylesheet" /> <!-- This holds the main app styles --> <link href="css/widgets.css" rel="stylesheet" /> <!-- And this one holds widget styles --> </head> <body class="unloaded"> <!-- Low-level base elements are "hardcoded" here, the unloaded class is used for transitions and is removed on load. i.e: --> <div class="tab-container" tabindex="-1"> <!-- Tab nav --> </div> <!-- Templates for all parts of the application and widgets are stored as elements here. I plan on changing these to <script> elements during the restructure since <template>'s need valid HTML. --> <template id="template.toolbar"> <!-- Template content --> </template> <!-- Templates end --> <!-- Plugins --> <script type="text/javascript" src="js/plugins.js"></script> <!-- This contains the code for all widgets, I plan on moving this online and downloading as necessary soon. --> <script type="text/javascript" src="js/widgets.js"></script> <!-- This contains the main application JS. --> <script type="text/javascript" src="js/script.js"></script> </body> </html> widgets.js (initLog || (window.initLog = [])).push([new Date().getTime(), "A log is kept during page load so performance can be analyzed and errors pinpointed"]); // Widgets are stored in an object and extended (with jQuery, but I'll probably switch to underscore if using Backbone) as necessary var Widgets = { 1: { // Widget ID, this is set here so widgets can be retreived by ID id: 1, // Widget ID again, this is used after the widget object is duplicated and detached size: 3, // Default size, medium in this case order: 1, // Order shown in "store" name: "Weather", // Widget name interval: 300000, // Refresh interval nicename: "weather", // HTML and JS safe widget name sizes: ["tiny", "small", "medium"], // Available widget sizes desc: "Short widget description", settings: [ { // Widget setting specifications stored as an array of objects. These are used to dynamically generate widget setting popups. type: "list", nicename: "location", label: "Location(s)", placeholder: "Enter a location and press Enter" } ], config: { // Widget settings as stored in the tabs object (see script.js for storage information) size: "medium", location: ["San Francisco, CA"] }, data: {}, // Cached widget data stored locally, this lets it work offline customFunc: function(cb) {}, // Widgets can optionally define custom functions in any part of their object refresh: function() {}, // This fetches data from the web and caches it locally in data, then calls render. It gets called after the page is loaded for faster loads render: function() {} // This renders the widget only using information from data, it's called on page load. } }; script.js (initLog || (window.initLog = [])).push([new Date().getTime(), "These are also at the end of every file"]); // Plugins, extends and globals go here. i.e. Number.prototype.pad = .... var iChrome = function(refresh) { // The main iChrome init, called with refresh when refreshing to not re-run libs iChrome.Status.log("Starting page generation"); // From now on iChrome.Status.log is defined, it's used in place of the initLog iChrome.CSS(); // Dynamically generate CSS based on settings iChrome.Tabs(); // This takes the tabs stored in the storage (see fetching below) and renders all columns and widgets as necessary iChrome.Status.log("Tabs rendered"); // These will be omitted further along in this excerpt, but they're used everywhere // Checks for justInstalled => show getting started are run here /* The main init runs the bare minimum required to display the page, this sets all non-visible or instantly need things (such as widget dragging) on a timeout */ iChrome.deferredTimeout = setTimeout(function() { iChrome.deferred(refresh); // Pass refresh along, see above }, 200); }; iChrome.deferred = function(refresh) {}; // This calls modules one after the next in the appropriate order to finish rendering the page iChrome.Search = function() {}; // Modules have a base init function and are camel-cased and capitalized iChrome.Search.submit = function(val) {}; // Methods within modules are camel-cased and not capitalized /* Extension storage is async and fetched at the beginning of plugins.js, it's then stored in a variable that iChrome.Storage processes. The fetcher checks to see if processStorage is defined, if it is it gets called, otherwise settings are left in iChromeConfig */ var processStorage = function() { iChrome.Storage(function() { iChrome.Templates(); // Templates are read from their elements and held in a cache iChrome(); // Init is called }); }; if (typeof iChromeConfig == "object") { processStorage(); } Objectives of the restructure Memory usage: Chrome apparently has a memory leak in extensions, they're trying to fix it but memory still keeps on getting increased every time the page is loaded. The app also uses a lot on its own. Code readability: At this point I can't follow what's being called in the code. While rewriting the code I plan on properly commenting everything. Module interdependence: Right now modules call each other a lot, AFAIK that's not good at all since any change you make to one module could affect countless others. Fault tolerance: There's very little fault tolerance or error handling right now. If a widget is causing the rest of the page to stop rendering the user should at least be able to remove it. Speed is currently not an issue and I'd like to keep it that way. How I think I should do it The restructure should be done using Backbone.js and events that call modules (i.e. on storage.loaded = init). Modules should each go in their own file, I'm thinking there should be a set of core files that all modules can rely on and call directly and everything else should be event based. Widget structure should be kept largely the same, but maybe they should also be split into their own files. AFAIK you can't load all templates in a folder, therefore they need to stay inline. Grunt should be used to merge all modules, plugins and widgets into one file. Templates should also all be precompiled. Question: Should I follow my current restructure plan? Does that sound like a good starting point, or is there a different approach that I'm missing? Should I not do any of the things I listed? Do applications written with Backbone tend to be more intensive (memory and speed) than ones written in Vanilla JS? Also, can I expect to improve this with a proper restructure or is my current code about as good as can be expected?

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  • A Simple Collapsible Menu with jQuery

    - by Vincent Maverick Durano
    In this post I'll demonstrate how to make a simple collapsible menu using jQuery. To get started let's go ahead and fire up Visual Studio and create a new WebForm.  Now let's build our menu by adding some div, p and anchor tags. Since I'm using a masterpage then the ASPX mark-up should look something like this:   1: <asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server"> 2: <div id="Menu"> 3: <p>CARS</p> 4: <div class="section"> 5: <a href="#">Car 1</a> 6: <a href="#">Car 2</a> 7: <a href="#">Car 3</a> 8: <a href="#">Car 4</a> 9: </div> 10: <p>BIKES</p> 11: <div class="section"> 12: <a href="#">Bike 1</a> 13: <a href="#">Bike 2</a> 14: <a href="#">Bike 3</a> 15: <a href="#">Bike 4</a> 16: <a href="#">Bike 5</a> 17: <a href="#">Bike 6</a> 18: <a href="#">Bike 7</a> 19: <a href="#">Bike 8</a> 20: </div> 21: <p>COMPUTERS</p> 22: <div class="section"> 23: <a href="#">Computer 1</a> 24: <a href="#">Computer 2</a> 25: <a href="#">Computer 3</a> 26: <a href="#">Computer 4</a> 27: </div> 28: <p>OTHERS</p> 29: <div class="section"> 30: <a href="#">Other 1</a> 31: <a href="#">Other 2</a> 32: <a href="#">Other 3</a> 33: <a href="#">Other 4</a> 34: </div> 35: </div> 36: </asp:Content>   As you can see there's nothing fancy about the mark up above.. Now lets go ahead create a simple CSS to set the look and feel our our Menu. Just for for the simplicity of this demo, add the following CSS below under the <head> section of the page or if you are using master page then add it a the content head. Here's the CSS below:   1: <asp:Content ID="Content1" ContentPlaceHolderID="HeadContent" runat="server"> 2: <style type="text/css"> 3: #Menu{ 4: width:300px; 5: } 6: #Menu > p{ 7: background-color:#104D9E; 8: color:#F5F7FA; 9: margin:0; 10: padding:0; 11: border-bottom-style: solid; 12: border-bottom-width: medium; 13: border-bottom-color:#000000; 14: cursor:pointer; 15: } 16: #Menu .section{ 17: padding-left:5px; 18: background-color:#C0D9FA; 19: } 20: a{ 21: display:block; 22: color:#0A0A07; 23: } 24: </style> 25: </asp:Content>   Now let's add the collapsible effects on our menu using jQuery. To start using jQuery then register the following script at the very top of the <head> section of the page or if you are using master page then add it the very top of  the content head section.   <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.4.4/jquery.min.js" ></script>   As you can see I'm using Google AJAX API CDN to host the jQuery file. You can also download the jQuery here and host it in your server if you'd like. Okay here's the the jQuery script below for adding the collapsible effects:   1: <script type="text/javascript"> 2: $(function () { 3: $("a").mouseover(function () { $(this).addClass("highlightRow"); }) 4: .mouseout(function () { $(this).removeClass("highlightRow"); }); 5:   6: $(".section").hide(); 7: $("#Menu > p").click(function () { 8: $(this).next().slideToggle("Slow"); 9: }); 10: }); 11: </script>   Okay to give you a little bit of explaination, at line 3.. what it does is it looks for all the "<a>" anchor elements on the page and attach the mouseover and mouseout event. On mouseover, the highlightRow css class is added to <a> element and on mouse out we remove the css class to revert the style to its default look. at line 6 we will hide all the elements that has a class name set as "section" and if you look at the mark up above it is refering to the <div> elements right after each <p> element. At line 7.. what it does is it looks for a <p> element that is a direct child of the element that has an ID of "Menu" and then attach the click event to toggle the visibilty of the section. Here's how it looks in the page: On Initial Load: After Clicking the Section Header:   That's it! I hope someone find this post usefu!   Technorati Tags: ASP.NET,JQuery,Master Page,JavaScript

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  • Troubleshooting Windows Authentication problems (no challenge) in IIS 7.5?

    - by Aaronaught
    I know that there are thousands of reports of people having trouble getting Integrated Windows Authentication to work with IIS, but they all seem to lead to web pages that don't apply or solutions that I've already tried. I've deployed dozens of sites like this before, so either there's something bizarre going on with the server/configuration, or I've been looking at this too long and not seeing the obvious. Simply put, everything works perfectly on my local machine, but falls apart on the production server, which as far as I can tell has the exact same configuration. On the local machine: The machine is running Windows 7 Ultimate, Service Pack 1, IIS 7.5. The site has been tested successfully, using both IIS and the VS Web Development Server. The IIS site config has all authentication methods disabled except Windows Authentication. The local machine is not on any domain. The Providers set up are Negotiate and NTLM (not Negotiate:Kerberos). Extended Protection is Off. All browsers tested (IE, Firefox, Chrome) show the challenge prompt and allow me to log in to the localhost domain with my (local) Windows account. All browsers tested also work using an opaque local IP address - so the browsers themselves don't seem to care whether the site appears "local" or "remote". I've added a display line to the web page which shows the currently-logged-in user and it shows exactly what I would expect (whichever local user I logged in with). On the remote machine: The server is running Windows Server 2008 R2, IIS 7.5. Loading the web page results in an immediate 401.2 error: You are not authorized to view this page due to invalid authentication headers. No challenge prompt ever appears. The IIS site config has all authentication methods disabled except Windows Authentication. The remote machine is not on any domain. The Providers set up are Negotiate and NTLM (not Negotiate:Kerberos). Extended Protection is Off. On the remote machine (remote desktop session), the same error appears in Internet Explorer regardless of whether the domain is localhost or the external IP address. If I try to view the remote web site from my local machine, the error is still 401, but a slightly different 401. No subcode, with the text: Access is denied due to invalid credentials. The Windows Authentication IIS role feature is installed. The WindowsAuthentication Module is added (at the Server level). The exact same error occurs if I turn off Windows Authentication and enable Basic Authentication. The site does load if I turn off Windows Authentication and enable Anonymous (obviously). I've already followed all of the troubleshooting steps on Microsoft Support: Troubleshooting HTTP 401 errors in IIS I've already tried the workaround shown on another Microsoft support page (supposedly to force NTLM as the only method). Last but not least, I tried turning on FREB for 401.2 errors and the results don't seem to tell me anything useful, all I see is the following warning: MODULE_SET_RESPONSE_ERROR_STATUS ModuleName IIS Web Core Notification 2 HttpStatus 401 HttpReason Unauthorized HttpSubStatus 2 ErrorCode 2147942405 ConfigExceptionInfo Notification AUTHENTICATE_REQUEST ErrorCode Access is denied. (0x80070005) ...this seems to just be telling me what I already know (that it's simply rejecting the request instead of negotiating the credentials). The trace does indicate that the WindowsAuthentication module is correctly loaded because there is a NOTIFY_MODULE_START line with ModuleName = WindowsAuthentication (and various other ASP.NET follow-up events - [un]fortunately, no interesting errors or warnings here). Can anyone tell me what I might be missing here? Quick Update: I'm a little uncomfortable sending a whole Wireshark dump as it would reveal IPs, URLs and other stuff, but I did a side-by-side comparison of the HTTP responses from localhost and the remote server in Fiddler, and it seems fairly self-evident what the problem is: Localhost: HTTP/1.1 401 Unauthorized Cache-Control: private Content-Type: text/html; charset=utf-8 Server: Microsoft-IIS/7.5 WWW-Authenticate: Negotiate WWW-Authenticate: NTLM X-Powered-By: ASP.NET Date: Sat, 17 Dec 2011 23:42:34 GMT Content-Length: 6399 Proxy-Support: Session-Based-Authentication Remote: HTTP/1.1 401 Unauthorized Content-Type: text/html Server: Microsoft-IIS/7.5 X-Powered-By: ASP.NET Date: Sat, 17 Dec 2011 23:43:13 GMT Content-Length: 1293 Aside from a few seemingly-inconsequential differences like cache-control, the main difference is that the remote server is not sending the WWW-Authenticate headers back to the client. So, I guess that narrows the question down to: Why is IIS not sending WWW-Authenticate headers when Windows Authentication appears to be installed, loaded, and exclusively enabled?

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  • Apache load balancer limits with Tomcat over AJP

    - by PAS
    Hi All, I have Apache acting as a load balancer in front of 3 Tomcat servers. Occasionally, Apache returns 503 responses, which I would like to remove completely. All 4 servers are not under significant load in terms of CPU, memory, or disk, so I am a little unsure what is reaching it's limits or why. 503s are returned when all workers are in error state - whatever that means. Here are the details: Apache config: <IfModule mpm_prefork_module> StartServers 30 MinSpareServers 30 MaxSpareServers 60 MaxClients 200 MaxRequestsPerChild 1000 </IfModule> ... <Proxy *> AddDefaultCharset Off Order deny,allow Allow from all </Proxy> # Tomcat HA cluster <Proxy balancer://mycluster> BalancerMember ajp://10.176.201.9:8009 keepalive=On retry=1 timeout=1 ping=1 BalancerMember ajp://10.176.201.10:8009 keepalive=On retry=1 timeout=1 ping=1 BalancerMember ajp://10.176.219.168:8009 keepalive=On retry=1 timeout=1 ping=1 </Proxy> # Passes thru track. or api. ProxyPreserveHost On ProxyStatus On # Original tracker ProxyPass /m balancer://mycluster/m ProxyPassReverse /m balancer://mycluster/m Tomcat config: <Server port="8005" shutdown="SHUTDOWN"> <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" /> <Listener className="org.apache.catalina.core.JasperListener" /> <Listener className="org.apache.catalina.mbeans.ServerLifecycleListener" /> <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" /> <Service name="Catalina"> <Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" /> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" /> <Engine name="Catalina" defaultHost="localhost"> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false"> </Engine> </Service> </Server> Apache error log: [Mon Mar 22 18:39:47 2010] [error] (70007)The timeout specified has expired: proxy: AJP: attempt to connect to 10.176.201.10:8009 (10.176.201.10) failed [Mon Mar 22 18:39:47 2010] [error] ap_proxy_connect_backend disabling worker for (10.176.201.10) [Mon Mar 22 18:39:47 2010] [error] proxy: AJP: failed to make connection to backend: 10.176.201.10 [Mon Mar 22 18:39:47 2010] [error] (70007)The timeout specified has expired: proxy: AJP: attempt to connect to 10.176.201.9:8009 (10.176.201.9) failed [Mon Mar 22 18:39:47 2010] [error] ap_proxy_connect_backend disabling worker for (10.176.201.9) [Mon Mar 22 18:39:47 2010] [error] proxy: AJP: failed to make connection to backend: 10.176.201.9 [Mon Mar 22 18:39:47 2010] [error] (70007)The timeout specified has expired: proxy: AJP: attempt to connect to 10.176.219.168:8009 (10.176.219.168) failed [Mon Mar 22 18:39:47 2010] [error] ap_proxy_connect_backend disabling worker for (10.176.219.168) [Mon Mar 22 18:39:47 2010] [error] proxy: AJP: failed to make connection to backend: 10.176.219.168 [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state [Mon Mar 22 18:39:47 2010] [error] proxy: BALANCER: (balancer://mycluster). All workers are in error state Load balancer top info: top - 23:44:11 up 210 days, 4:32, 1 user, load average: 0.10, 0.11, 0.09 Tasks: 135 total, 2 running, 133 sleeping, 0 stopped, 0 zombie Cpu(s): 0.1%us, 0.2%sy, 0.0%ni, 99.2%id, 0.1%wa, 0.0%hi, 0.1%si, 0.3%st Mem: 524508k total, 517132k used, 7376k free, 9124k buffers Swap: 1048568k total, 352k used, 1048216k free, 334720k cached Tomcat top info: top - 23:47:12 up 210 days, 3:07, 1 user, load average: 0.02, 0.04, 0.00 Tasks: 63 total, 1 running, 62 sleeping, 0 stopped, 0 zombie Cpu(s): 0.2%us, 0.0%sy, 0.0%ni, 99.8%id, 0.1%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 2097372k total, 2080888k used, 16484k free, 21464k buffers Swap: 4194296k total, 380k used, 4193916k free, 1520912k cached Catalina.out does not have any error messages in it. According to Apache's server status, it seems to be maxing out at 143 requests/sec. I believe the servers can handle substantially more load than they are, so any hints about low default limits or other reasons why this setup would be maxing out would be greatly appreciated.

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  • OpenVPN Error : TLS Error: local/remote TLS keys are out of sync: [AF_INET]

    - by Lucidity
    Fist off thanks for reading this, I appreciate any and all suggestions. I am having some serious problems reconnecting to my OpenVPN client using Riseup.net's VPN. I have spent a few days banging my head against the wall in attempts to set this up on my iOS devices....but that is a whole other issue. I was however able to set it up on my Mac OS X specifically on my Windows Vista 32 bit BootCamp VM with relatively little trouble. To originally connect I only had to modify the recommended Config file very slightly (Config file included at the end of this post): - I had to enter the code directly into my config file - And change "dev tap" to "dev tun" So I was connected. (Note - I did test to ensure the VPN was actually working after I originally connected, it was. Also verified the .pem file (inserted as the coding in my config file) for authenticity). I left the VPN running. My computer went to sleep. Today I went to use the internet expecting (possibly incorrectly - I am now unsure if I was wrong to leave it running) to still be connected to the VPN. However I saw immediately I was not. I went to reconnect. And was (am) unable to. My logs after attempting to connect (and getting a connection failed dialog box) show everything working as it should (as far as I can tell) until the end where I get the following lines: Mon Sep 23 21:07:49 2013 us=276809 Initialization Sequence Completed Mon Sep 23 21:07:49 2013 us=276809 MANAGEMENT: >STATE:1379995669,CONNECTED,SUCCESS, OMITTED Mon Sep 23 21:22:50 2013 us=390350 Authenticate/Decrypt packet error: packet HMAC authentication failed Mon Sep 23 21:23:39 2013 us=862180 TLS Error: local/remote TLS keys are out of sync: [AF_INET] VPN IP OMITTED [2] Mon Sep 23 21:23:57 2013 us=395183 Authenticate/Decrypt packet error: packet HMAC authentication failed Mon Sep 23 22:07:41 2013 us=296898 TLS: soft reset sec=0 bytes=513834601/0 pkts=708032/0 Mon Sep 23 22:07:41 2013 us=671299 VERIFY OK: depth=1, C=US, O=Riseup Networks, L=Seattle, ST=WA, CN=Riseup Networks, [email protected] Mon Sep 23 22:07:41 2013 us=671299 VERIFY OK: depth=0, C=US, O=Riseup Networks, L=Seattle, ST=WA, CN=vpn.riseup.net Mon Sep 23 22:07:46 2013 us=772508 Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key Mon Sep 23 22:07:46 2013 us=772508 Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Mon Sep 23 22:07:46 2013 us=772508 Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key Mon Sep 23 22:07:46 2013 us=772508 Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Mon Sep 23 22:07:46 2013 us=772508 Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA So I have searched for a solution online and I have included what I have attempted below, however I fear (know) I am not knowledgeable enough in this area to fix this myself. I apologize in advance for my ignorance. I do tech support for a living, but not this kind of tech support unfortunately. Other notes and troubleshooting done - - Windows Firewall is disabled completely, as well as other Anti-virus programs - Tor is disabled completely - No Proxies running - Time is correct in all locations - Router Firmware is up to date - Able to connect to the internet and as far as I can tell all necessary ports are open. - No settings have been altered since I was able to connect successfully. - Ethernet as well as wifi connections attempted, resulted in same error. Also tried adding the following lines to my config file (without success or change in error): persist-key persist-tun proto tcp (after reading that this error generally occurs on UDP connections, and is extremely rare on TCP) resolv-retry infinite (thinking the connection may have timed out since the issues occurred after leaving VPN connected during about 10 hrs of computer in sleep mode) All attempts resulted in exact same error code included at the top of this post. The original suggestions I found online stated - (regarding the TLS Error) - This error should resolve itself within 60 seconds, or if not quit wait 120 seconds and try again. (Which isnt the case here...) (regarding the Out of Sync" error) - If you continue to get "out of sync" errors and the link does not come up, then it means that something is probably wrong with your config file. You must use either ping and ping-restart on both sides of the connection, or keepalive on the server side of a client/server connection, in order to gracefully recover from "local/remote TLS keys are out of sync" errors. I wouldn't be surprised if my config file is lacking, or not correct. However I can confirm I followed the instructions to a tee. And was able to connect originally (and have not modified my settings or config file since I was able to connect to when the error began occurring). I have a very simple config file: client dev tun tun-mtu 1500 remote vpn.riseup.net auth-user-pass ca RiseupCA.pem redirect-gateway verb 4 <ca> -----BEGIN CERTIFICATE----- [OMITTED] -----END CERTIFICATE----- </ca> I would really appreciate any help or suggestions. I am at a total loss here, I know I'm asking a lot here. Though I am a new user on this site I help others on many forums including Microsoft's support community and especially Apple's support communities, so I will definitely pass on anything I learn here to help others. Thanks so so so much in advance for reading this.

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  • "power limit notification" clobbering on 12G Dell servers with RHEL6

    - by Andrew B
    Server: Poweredge r620 OS: RHEL 6.4 Kernel: 2.6.32-358.18.1.el6.x86_64 I'm experiencing application alarms in my production environment. Critical CPU hungry processes are being starved of resources and causing a processing backlog. The problem is happening on all the 12th Generation Dell servers (r620s) in a recently deployed cluster. As near as I can tell, instances of this happening are matching up to peak CPU utilization, accompanied by massive amounts of "power limit notification" spam in dmesg. An excerpt of one of these events: Nov 7 10:15:15 someserver [.crit] CPU12: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU0: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU6: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU14: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU18: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU2: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU4: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU16: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU0: Package power limit notification (total events = 11) Nov 7 10:15:15 someserver [.crit] CPU6: Package power limit notification (total events = 13) Nov 7 10:15:15 someserver [.crit] CPU14: Package power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU18: Package power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU20: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU8: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU2: Package power limit notification (total events = 12) Nov 7 10:15:15 someserver [.crit] CPU10: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU22: Core power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU4: Package power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU16: Package power limit notification (total events = 13) Nov 7 10:15:15 someserver [.crit] CPU20: Package power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU8: Package power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU10: Package power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU22: Package power limit notification (total events = 14) Nov 7 10:15:15 someserver [.crit] CPU15: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU3: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU1: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU5: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU17: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU13: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU15: Package power limit notification (total events = 375) Nov 7 10:15:15 someserver [.crit] CPU3: Package power limit notification (total events = 374) Nov 7 10:15:15 someserver [.crit] CPU1: Package power limit notification (total events = 376) Nov 7 10:15:15 someserver [.crit] CPU5: Package power limit notification (total events = 376) Nov 7 10:15:15 someserver [.crit] CPU7: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU19: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU17: Package power limit notification (total events = 377) Nov 7 10:15:15 someserver [.crit] CPU9: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU21: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU23: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU11: Core power limit notification (total events = 369) Nov 7 10:15:15 someserver [.crit] CPU13: Package power limit notification (total events = 376) Nov 7 10:15:15 someserver [.crit] CPU7: Package power limit notification (total events = 375) Nov 7 10:15:15 someserver [.crit] CPU19: Package power limit notification (total events = 375) Nov 7 10:15:15 someserver [.crit] CPU9: Package power limit notification (total events = 374) Nov 7 10:15:15 someserver [.crit] CPU21: Package power limit notification (total events = 375) Nov 7 10:15:15 someserver [.crit] CPU23: Package power limit notification (total events = 374) A little Google Fu reveals that this is typically associated with the CPU running hot, or voltage regulation kicking in. I don't think that's what is happening though. Temperature sensors for all servers in the cluster are running fine, Power Cap Policy is disabled in the iDRAC, and my System Profile is set to "Performance" on all of these servers: # omreport chassis biossetup | grep -A10 'System Profile' System Profile Settings ------------------------------------------ System Profile : Performance CPU Power Management : Maximum Performance Memory Frequency : Maximum Performance Turbo Boost : Enabled C1E : Disabled C States : Disabled Monitor/Mwait : Enabled Memory Patrol Scrub : Standard Memory Refresh Rate : 1x Memory Operating Voltage : Auto Collaborative CPU Performance Control : Disabled A Dell mailing list post describes the symptoms almost perfectly. Dell suggested that the author try using the Performance profile, but that didn't help. He ended up applying some settings in Dell's guide for configuring a server for low latency environments and one of those settings (or a combination thereof) seems to have fixed the problem. Kernel.org bug #36182 notes that power-limit interrupt debugging was enabled by default, which is causing performance degradation in scenarios where CPU voltage regulation is kicking in. A RHN KB article (RHN login required) mentions a problem impacting PE r620 and r720 servers not running the Performance profile, and recommends an update to a kernel released two weeks ago. ...Except we are running the Performance profile... Everything I can find online is running me in circles here. What's the heck is going on?

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  • Why is Postfix trying to connect to other machines SMTP port 25?

    - by TryTryAgain
    Jul 5 11:09:25 relay postfix/smtp[3084]: connect to ab.xyz.com[10.41.0.101]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3087]: connect to ab.xyz.com[10.41.0.247]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3088]: connect to ab.xyz.com[10.41.0.101]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3084]: connect to ab.xyz.com[10.41.0.247]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3087]: connect to ab.xyz.com[10.41.0.110]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3088]: connect to ab.xyz.com[10.41.0.110]:25: Connection refused Jul 5 11:09:25 relay postfix/smtp[3084]: connect to ab.xyz.com[10.41.0.102]:25: Connection refused Jul 5 11:09:30 relay postfix/smtp[3085]: connect to ab.xyz.com[10.41.0.102]:25: Connection refused Jul 5 11:09:30 relay postfix/smtp[3086]: connect to ab.xyz.com[10.41.0.247]:25: Connection refused Jul 5 11:09:30 relay postfix/smtp[3086]: connect to ab.xyz.com[10.41.0.102]:25: Connection refused Jul 5 11:09:55 relay postfix/smtp[3087]: connect to ab.xyz.com[10.40.40.130]:25: Connection timed out Jul 5 11:09:55 relay postfix/smtp[3084]: connect to ab.xyz.com[10.40.40.130]:25: Connection timed out Jul 5 11:09:55 relay postfix/smtp[3088]: connect to ab.xyz.com[10.40.40.130]:25: Connection timed out Jul 5 11:09:55 relay postfix/smtp[3087]: connect to ab.xyz.com[10.41.0.135]:25: Connection refused Jul 5 11:09:55 relay postfix/smtp[3084]: connect to ab.xyz.com[10.41.0.110]:25: Connection refused Jul 5 11:09:55 relay postfix/smtp[3088]: connect to ab.xyz.com[10.41.0.247]:25: Connection refused Is this a DNS thing, doubtful as I've changed from our local DNS to Google's..still Postfix will occasionally try and connect to ab.xyz.com from a variety of addresses that may or may not have port 25 open and act as mail servers to begin with. Why is Postfix attempting to connect to other machines as seen in the log? Mail is being sent properly, other than that, it appears all is good. Occasionally I'll also see: relay postfix/error[3090]: 3F1AB42132: to=, relay=none, delay=32754, delays=32724/30/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to ab.xyz.com[10.41.0.102]:25: Connection refused) I have Postfix setup with very little restrictions: mynetworks = 127.0.0.0/8, 10.0.0.0/8 only. Like I said it appears all mail is getting passed through, but I hate seeing errors and it is confusing me as to why it would be attempting to connect to other machines as seen in the log. Some Output of cat /var/log/mail.log|grep 3F1AB42132 Jul 5 02:04:01 relay postfix/smtpd[1653]: 3F1AB42132: client=unknown[10.41.0.109] Jul 5 02:04:01 relay postfix/cleanup[1655]: 3F1AB42132: message-id= Jul 5 02:04:01 relay postfix/qmgr[1588]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 02:04:31 relay postfix/smtp[1634]: 3F1AB42132: to=, relay=none, delay=30, delays=0.02/0/30/0, dsn=4.4.1, status=deferred (connect to ab.xyz.com[10.41.0.110]:25: Connection refused) Jul 5 02:13:58 relay postfix/qmgr[1588]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 02:14:28 relay postfix/smtp[1681]: 3F1AB42132: to=, relay=none, delay=628, delays=598/0.01/30/0, dsn=4.4.1, status=deferred (connect to ab.xyz.com[10.41.0.247]:25: Connection refused) Jul 5 02:28:58 relay postfix/qmgr[1588]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 02:29:28 relay postfix/smtp[1684]: 3F1AB42132: to=, relay=none, delay=1527, delays=1497/0/30/0, dsn=4.4.1, status=deferred (connect to ab.xyz.com[10.41.0.135]:25: Connection refused) Jul 5 02:58:58 relay postfix/qmgr[1588]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 02:59:28 relay postfix/smtp[1739]: 3F1AB42132: to=, relay=none, delay=3327, delays=3297/0/30/0, dsn=4.4.1, status=deferred (connect to ab.xyz.com[10.40.40.130]:25: Connection timed out) Jul 5 03:58:58 relay postfix/qmgr[1588]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 03:59:28 relay postfix/smtp[1839]: 3F1AB42132: to=, relay=none, delay=6928, delays=6897/0.03/30/0, dsn=4.4.1, status=deferred (connect to ab.xyz.com[10.41.0.101]:25: Connection refused) Jul 5 04:11:03 relay postfix/qmgr[2039]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 04:11:33 relay postfix/error[2093]: 3F1AB42132: to=, relay=none, delay=7653, delays=7622/30/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to ab.xyz.com[10.41.0.101]:25: Connection refused) Jul 5 05:21:03 relay postfix/qmgr[2039]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 05:21:33 relay postfix/error[2217]: 3F1AB42132: to=, relay=none, delay=11853, delays=11822/30/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to ab.xyz.com[10.41.0.101]:25: Connection refused) Jul 5 06:29:25 relay postfix/qmgr[2420]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 06:29:55 relay postfix/error[2428]: 3F1AB42132: to=, relay=none, delay=15954, delays=15924/30/0/0.08, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to ab.xyz.com[10.41.0.101]:25: Connection refused) Jul 5 07:39:24 relay postfix/qmgr[2885]: 3F1AB42132: from=, size=3404, nrcpt=1 (queue active) Jul 5 07:39:54 relay postfix/error[2936]: 3F1AB42132: to=, relay=none, delay=20153, delays=20123/30/0/0, dsn=4.4.1, status=deferred (delivery temporarily suspended: connect to ab.xyz.com[10.40.40.130]:25: Connection timed out)

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  • PHP pages working slow from time to time

    - by user1038179
    I have VPS with limit of 2GB of ram and 8 CPU cores. I have 5 sites on that VPS (one of them is just for testing, no visitors exept me). All 5 sites are image galleries, like wallpaper sites. Last week I noticed problem on one site (main domain, used for name servers, and also with most traffic, visitors). That site has two image galleries, one is old static html gallery made few years ago and another, main, is powered by ZENPhoto CMS. Also I have that same gallery CMS on another two sites on that same VPS (on one running site and on one just for testing site). On other two sites I have diferent PHP driven gallery. Problem is that after some time (it vary from 10 minutes to few hours after apache restart), loading of pages on main site becomes very slow, or I get 503 Service Temporarily Unavailable error. So pages becomes unavailable. But just that part with new CMS gallery, old part of site with static html pages are working fast and just fine. Also other two sites with same CMS gallery and other two with different PHP driven gallery are working fine and fast at the same time. I thought it must be something with CMS on that main site, because other sites are working nice. Then I tryed to open contact and guest book pages on that main site which are outside of that CMS but also PHP pages, and they do not load too, but that same contact php scipts are working on other sites at the same time. So, when site starts to hangs, ONLY PHP generated content is not working, like I said other static pages are working. And, ONLY on that one main site I have problems. Then I need to restart Apache, after restart everything is vorking nice and fast, for some time, than again, just PHP pages on main site are becomming slower. If I do not restart apache that slowness take some time (several minutes, hours, depending ot traffic) and during that time PHP diven content is loading very slow or unavailable on that site. After sime time, on moments everything start to work and is fast again for some time, and again. In hours with more traffic PHP content is loading slowly or it is unavailable, in hours with less traffic it is sometimes fast and sometimes little bit slower than usually. And ones again, only on that main site, and only PHP driven pages, static pages are working fast even in most traffic hours also other sites with even same CMS are working fast. Currently I have about 7000 unique visitors on that site but site worked nice even with 11500 visitors per day. And about 17000 in total visitors on VPS, all sites ( about 3 pages per unique visitor). When site start to slow down sometimes in apache status I can see something like this: mod_fcgid status: Total FastCGI processes: 37 Process: php5 (/usr/local/cpanel/cgi-sys/php5)Pid Active Idle Accesses State 11300 39 28 7 Working 11274 47 28 7 Working 11296 40 29 3 Working 11283 45 30 3 Working 11304 36 31 1 Working 11282 46 32 3 Working 11292 42 33 1 Working 11289 44 34 1 Working 11305 35 35 0 Working 11273 48 36 2 Working 11280 47 39 1 Working 10125 133 40 12 Exiting(communication error) 11294 41 41 1 Exiting(communication error) 11277 47 42 2 Exiting(communication error) 11291 43 43 1 Exiting(communication error) 10187 108 43 10 Exiting(communication error) 10209 95 44 7 Exiting(communication error) 10171 113 44 5 Exiting(communication error) 11275 47 47 1 Exiting(communication error) 10144 125 48 8 Exiting(communication error) 10086 149 48 20 Exiting(communication error) 10212 94 49 5 Exiting(communication error) 10158 118 49 5 Exiting(communication error) 10169 114 50 4 Exiting(communication error) 10105 141 50 16 Exiting(communication error) 10094 146 50 15 Exiting(communication error) 10115 139 51 17 Exiting(communication error) 10213 93 51 9 Exiting(communication error) 10197 103 51 7 Exiting(communication error) Process: php5 (/usr/local/cpanel/cgi-sys/php5)Pid Active Idle Accesses State 7983 1079 2 149 Ready 7979 1079 11 151 Ready Process: php5 (/usr/local/cpanel/cgi-sys/php5)Pid Active Idle Accesses State 7990 1066 0 57 Ready 8001 1031 64 35 Ready 7999 1032 94 29 Ready 8000 1031 91 36 Ready 8002 1029 34 52 Ready Process: php5 (/usr/local/cpanel/cgi-sys/php5)Pid Active Idle Accesses State 7991 1064 29 115 Ready When it is working nicly there is no lines with "Exiting(communication error)" Active and Idle are time active and time since last request, in seconds. Here are system info. Sysem info: Total processors: 8 Processor #1 Vendor GenuineIntel Name Intel(R) Xeon(R) CPU E5440 @ 2.83GHz Speed 88.320 MHz Cache 6144 KB All other seven are the same. System Information Linux vps.nnnnnnnnnnnnnnnnn.nnn 2.6.18-028stab099.3 #1 SMP Wed Mar 7 15:20:22 MSK 2012 x86_64 x86_64 x86_64 GNU/Linux Current Memory Usage total used free shared buffers cached Mem: 8388608 882164 7506444 0 0 0 -/+ buffers/cache: 882164 7506444 Swap: 0 0 0 Total: 8388608 882164 7506444 Current Disk Usage Filesystem Size Used Avail Use% Mounted on /dev/vzfs 100G 34G 67G 34% / none System Details: Running on: Apache/2.2.22 System info: (Unix) mod_ssl/2.2.22 OpenSSL/0.9.8e-fips-rhel5 DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 mod_fcgid/2.3.6 Powered by: PHP/5.3.10 Current Configuration Default PHP Version (.php files) 5 PHP 5 Handler fcgi PHP 4 Handler suphp Apache suEXEC on Apache Ruid2 off PHP 4 Handler suphp Apache suEXEC on Apache Configuration The following settings have been saved: fileetag: All keepalive: On keepalivetimeout: 3 maxclients: 150 maxkeepaliverequests: 10 maxrequestsperchild: 10000 maxspareservers: 10 minspareservers: 5 root_options: ExecCGI, FollowSymLinks, Includes, IncludesNOEXEC, Indexes, MultiViews, SymLinksIfOwnerMatch serverlimit: 256 serversignature: Off servertokens: Full sslciphersuite: ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:-LOW:-SSLv2:-EXP:!kEDH startservers: 5 timeout: 30 I hope, I explained my problem nicely. Any help would be nice.

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  • Windows 7 Machine Makes Router Drop -All- Wireless Connections

    - by Hammer Bro.
    Some background: My home network consists of my Desktop, a two-month old Windows 7 (x64) machine which is online most frequently (N-spec), as well as three other Windows XP laptops (all G) that only connect every now and then (one for work, one for Netflix, and the other for infrequent regular laptop uses). I used to have a Belkin F5D8236-4 wireless router, and everything worked great. A week ago, however, I found out that the Belkin absolutely in no way would establish a VPN connection, something that has become important for work. So I bought a Netgear WNR3500v2/U/L. The wireless was acting a little sketchy at first for just the Windows 7 machine, but I thought it had something to do with 802.11N and I was in a hurry so I just fished up an ethernet cable and disabled the computer's wireless. It has now become apparent, though, that whenever the Windows 7 machine is connected to the router, all wireless connections become unstable. I was using my work laptop for a solid six hours today with no trouble, having multiple SSH connections open over VPN and streaming internet radio in the background. Then, within two minutes of turning on this Windows 7 box, I had lost all connectivity over the wireless. And I was two feet away from the router. The same sort of thing happens on all of the other laptops -- Netflix can be playing stuff all weekend, but if I come up here and do things on this (W7) computer, the streaming will be dead within ten minutes. So here are my basic observations: If the Windows 7 machine is off, then all connections will have a Signal Strength of Very Good or Excellent and a Speed of 48-54 Mbps for an indefinite amount of time. Shortly after the Windows 7 machine is turned on, all wireless connections will experience a consistent decline in Speed down to 1.0 Mbps, eventually losing their connection entirely. These machines will continue to maintain 70% signal strength, as observed by themselves and router. Once dropped, a wireless connection will have difficulty reconnecting. And, if a connection manages to become established, it will quickly drop off again. The Windows 7 machine itself will continue to function just fine if it's using a wired connection, although it will experience these same issues over the wireless. All of the drivers and firmwares are up to date, and this happened both with the stock Netgear firmware as well as the (current) DD-WRT. What I've tried: Making sure each computer is being assigned a distinct IP. (They are.) Disabling UPnP and Stateful Packet Inspection on the router. Disabling Network Sharing, SSDP Discovery, TCP/IP NetBios Helper and Computer Browser services on the Windows 7 machine. Disabling QoS Packet Scheduler, IPv6, and Link Layer Topology Discovery options on my ethernet controller (leaving only Client for Microsoft Networks, File and Printer Sharing, and IPv4 enabled). What I think: It seems awfully similar to the problems discussed in detail at http://social.msdn.microsoft.com/Forums/en/wsk/thread/1064e397-9d9b-4ae2-bc8e-c8798e591915 (which was both the most relevant and concrete information I could dig up on the internet). I still think that something the Windows 7 IP stack (or just Operating System itself) is doing is giving the router fits. However, I could be wrong, because I have two key differences. One is that most instances of this problem are reported as the entire router dying or restarting, and mine still works just fine over the wired connection. The other is that it's a new router, tested with both the factory firmware and the (I assume) well-maintained DD-WRT project. Even if Windows 7 is still secretly sending IPv6 packets or the TCP Window Scaling implementation that I hear Vista caused some trouble with (even though I've tried my best to disable anything fancy), this router should support those functions. I don't want to get a new or a replacement router unless someone can convince me that this is a defective unit. But the problem seems too specific and predictable by my instincts to be a hardware hiccup. And I don't want to deal with the inevitable problems that always seem to take half a day to resolve when getting a new router, since I'm frantically working (including tomorrow) to complete a project by next week's deadline. Plus, I think in the worst case scenario, I could keep this router connected directly to the modem, disable its wireless entirely, and connect the old Belkin to it directly. That should allow me to still use VPN (although I'll have to plug my work laptop directly into that router), and then maintain wireless connections for all of the other computers. But that feels so wrong to me. Anyone have any ideas what the cause and possible solution could be? Clarifications: The Windows 7 machine is directly connected via an ethernet cable to the router for everything above. But while it is online, all other computers' wireless connections become unusable. It is not an issue of signal strength or interference -- no other devices within scanning range are using Channel 1, and the problem will affect computers that are literally feet away from the router with 95% signal strength.

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  • Making Thunar the default file browser without hiding the desktop icons

    - by Manu
    I really dislike Ubuntu's default file browser, nautilus, and decided to opt for a lighter alternative (Thunar or Xfe). I've used the following script to change the default to Thunar, but now all my icons are gone from the desktop ! The files are still there, in /home/myid/Desktop, but they do not appear. Is there a way to show them, or is this a consequence of removing nautilus as the default file browser ? Can I modify the following script* in order to keep the icons ? *copied from https://help.ubuntu.com/...: ## Originally written by aysiu from the Ubuntu Forums ## This is GPL'ed code ## So improve it and re-release it ## Define portion to make Thunar the default if that appears to be the appropriate action makethunardefault() { ## I went with --no-install-recommends because ## I didn't want to bring in a whole lot of junk, ## and Jaunty installs recommended packages by default. echo -e "\nMaking sure Thunar is installed\n" sudo apt-get update && sudo apt-get install thunar --no-install-recommends ## Does it make sense to change to the directory? ## Or should all the individual commands just reference the full path? echo -e "\nChanging to application launcher directory\n" cd /usr/share/applications echo -e "\nMaking backup directory\n" ## Does it make sense to create an entire backup directory? ## Should each file just be backed up in place? sudo mkdir nonautilusplease echo -e "\nModifying folder handler launcher\n" sudo cp nautilus-folder-handler.desktop nonautilusplease/ ## Here I'm using two separate sed commands ## Is there a way to string them together to have one ## sed command make two replacements in a single file? sudo sed -i -n 's/nautilus --no-desktop/thunar/g' nautilus-folder-handler.desktop sudo sed -i -n 's/TryExec=nautilus/TryExec=thunar/g' nautilus-folder-handler.desktop echo -e "\nModifying browser launcher\n" sudo cp nautilus-browser.desktop nonautilusplease/ sudo sed -i -n 's/nautilus --no-desktop --browser/thunar/g' nautilus-browser.desktop sudo sed -i -n 's/TryExec=nautilus/TryExec=thunar/g' nautilus-browser.desktop echo -e "\nModifying computer icon launcher\n" sudo cp nautilus-computer.desktop nonautilusplease/ sudo sed -i -n 's/nautilus --no-desktop/thunar/g' nautilus-computer.desktop sudo sed -i -n 's/TryExec=nautilus/TryExec=thunar/g' nautilus-computer.desktop echo -e "\nModifying home icon launcher\n" sudo cp nautilus-home.desktop nonautilusplease/ sudo sed -i -n 's/nautilus --no-desktop/thunar/g' nautilus-home.desktop sudo sed -i -n 's/TryExec=nautilus/TryExec=thunar/g' nautilus-home.desktop echo -e "\nModifying general Nautilus launcher\n" sudo cp nautilus.desktop nonautilusplease/ sudo sed -i -n 's/Exec=nautilus/Exec=thunar/g' nautilus.desktop ## This last bit I'm not sure should be included ## See, the only thing that doesn't change to the ## new Thunar default is clicking the files on the desktop, ## because Nautilus is managing the desktop (so technically ## it's not launching a new process when you double-click ## an icon there). ## So this kills the desktop management of icons completely ## Making the desktop pretty useless... would it be better ## to keep Nautilus there instead of nothing? Or go so far ## as to have Xfce manage the desktop in Gnome? echo -e "\nChanging base Nautilus launcher\n" sudo dpkg-divert --divert /usr/bin/nautilus.old --rename /usr/bin/nautilus && sudo ln -s /usr/bin/thunar /usr/bin/nautilus echo -e "\nRemoving Nautilus as desktop manager\n" killall nautilus echo -e "\nThunar is now the default file manager. To return Nautilus to the default, run this script again.\n" } restorenautilusdefault() { echo -e "\nChanging to application launcher directory\n" cd /usr/share/applications echo -e "\nRestoring backup files\n" sudo cp nonautilusplease/nautilus-folder-handler.desktop . sudo cp nonautilusplease/nautilus-browser.desktop . sudo cp nonautilusplease/nautilus-computer.desktop . sudo cp nonautilusplease/nautilus-home.desktop . sudo cp nonautilusplease/nautilus.desktop . echo -e "\nRemoving backup folder\n" sudo rm -r nonautilusplease echo -e "\nRestoring Nautilus launcher\n" sudo rm /usr/bin/nautilus && sudo dpkg-divert --rename --remove /usr/bin/nautilus echo -e "\nMaking Nautilus manage the desktop again\n" nautilus --no-default-window & ## The only change that isn't undone is the installation of Thunar ## Should Thunar be removed? Or just kept in? ## Don't want to load the script with too many questions? } ## Make sure that we exit if any commands do not complete successfully. ## Thanks to nanotube for this little snippet of code from the early ## versions of UbuntuZilla set -o errexit trap 'echo "Previous command did not complete successfully. Exiting."' ERR ## This is the main code ## Is it necessary to put an elseif in here? Or is ## redundant, since the directory pretty much ## either exists or it doesn't? ## Is there a better way to keep track of whether ## the script has been run before? if [[ -e /usr/share/applications/nonautilusplease ]]; then restorenautilusdefault else makethunardefault fi;

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  • straight to grub prompt on boot

    - by cheshirekow
    I am very lost. I did a fresh install of Ubuntu 10.04 on a laptop. First reboot was fine. I ran all the recommended upgrades, and now every time I start I get just a grub>_ prompt. No error message, just the prompt, and a little banner at the top saying grub's version and telling me that I have minimal bash style editing. I've tried: 1) Re-installing grub via sudo grub-install sda (There is only one disk with only two partitions, one primary, and one for swap) 2) Changed GRUB_HIDDEN_TIMEOUT=10 GRUB_TIMEOUT=30 GRUB_CMDLINE_LINUX_DEFAULT="rootdelay=90" GRUB_CMDLINE_LINUX="rootdelay=90" in /etc/default/grub. No luck. I can boot with the following: grub> set root=(hd0,1) grub> probe (hd0,1) -u c00fadde-f7e8-45e7-a4da-0235605f756 grub> linux /boot/vmlinuz-2.6.32-21-generic root=UUID=c00fadde-f7e8-45e7-a4da-0235605f756 rootdelay=90 grub> initrd /boot/initrd.img-2.6.32-21-generic grub> boot And then everything seems to be fine from there. From the grub prompt if I try configfile /boot/grub/grub.cfg The screen clears and I get another grub prompt. So, seriously, what could the problem be? edit: Full text of /boot/grub/grub.cfg # # DO NOT EDIT THIS FILE # # It is automatically generated by /usr/sbin/grub-mkconfig using templates # from /etc/grub.d and settings from /etc/default/grub # ### BEGIN /etc/grub.d/00_header ### if [ -s $prefix/grubenv ]; then load_env fi set default="0" if [ ${prev_saved_entry} ]; then set saved_entry=${prev_saved_entry} save_env saved_entry set prev_saved_entry= save_env prev_saved_entry set boot_once=true fi function savedefault { if [ -z ${boot_once} ]; then saved_entry=${chosen} save_env saved_entry fi } function recordfail { set recordfail=1 if [ -n ${have_grubenv} ]; then if [ -z ${boot_once} ]; then save_env recordfail; fi; fi } insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 if loadfont /usr/share/grub/unicode.pf2 ; then set gfxmode=640x480 insmod gfxterm insmod vbe if terminal_output gfxterm ; then true ; else # For backward compatibility with versions of terminal.mod that don't # understand terminal_output terminal gfxterm fi fi insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 set locale_dir=($root)/boot/grub/locale set lang=en insmod gettext if [ ${recordfail} = 1 ]; then set timeout=-1 else set timeout=30 fi ### END /etc/grub.d/00_header ### ### BEGIN /etc/grub.d/05_debian_theme ### set menu_color_normal=white/black set menu_color_highlight=black/light-gray ### END /etc/grub.d/05_debian_theme ### ### BEGIN /etc/grub.d/10_linux ### menuentry 'Ubuntu, with Linux 2.6.32-21-generic' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 linux /boot/vmlinuz-2.6.32-21-generic root=UUID=c00fadde-f7e8-45e7-a4da-0235c605f756 ro rootdelay=90 rootdelay=90 initrd /boot/initrd.img-2.6.32-21-generic } menuentry 'Ubuntu, with Linux 2.6.32-21-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os { recordfail insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 echo 'Loading Linux 2.6.32-21-generic ...' linux /boot/vmlinuz-2.6.32-21-generic root=UUID=c00fadde-f7e8-45e7-a4da-0235c605f756 ro single rootdelay=90 echo 'Loading initial ramdisk ...' initrd /boot/initrd.img-2.6.32-21-generic } ### END /etc/grub.d/10_linux ### ### BEGIN /etc/grub.d/20_memtest86+ ### menuentry "Memory test (memtest86+)" { insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 linux16 /boot/memtest86+.bin } menuentry "Memory test (memtest86+, serial console 115200)" { insmod ext2 set root='(hd0,1)' search --no-floppy --fs-uuid --set c00fadde-f7e8-45e7-a4da-0235c605f756 linux16 /boot/memtest86+.bin console=ttyS0,115200n8 } ### END /etc/grub.d/20_memtest86+ ### ### BEGIN /etc/grub.d/30_os-prober ### if [ ${timeout} != -1 ]; then if sleep --verbose --interruptible 10 ; then set timeout=0 fi fi ### END /etc/grub.d/30_os-prober ### ### BEGIN /etc/grub.d/40_custom ### # This file provides an easy way to add custom menu entries. Simply type the # menu entries you want to add after this comment. Be careful not to change # the 'exec tail' line above. ### END /etc/grub.d/40_custom ### output of update-grub Generating grub.cfg ... Found linux image: /boot/vmlinuz-2.6.32-21-generic Found initrd image: /boot/initrd.img-2.6.32-21-generic Found memtest86+ image: /boot/memtest86+.bin done contents of /boot total 14280 -rw-r--r-- 1 root root 640617 2010-04-16 09:01 abi-2.6.32-21-generic -rw-r--r-- 1 root root 115847 2010-04-16 09:01 config-2.6.32-21-generic drwxr-xr-x 3 root root 4096 2010-09-08 02:42 grub -rw-r--r-- 1 root root 7968754 2010-09-02 01:49 initrd.img-2.6.32-21-generic -rw-r--r-- 1 root root 160280 2010-03-23 05:37 memtest86+.bin -rw-r--r-- 1 root root 1687378 2010-04-16 09:01 System.map-2.6.32-21-generic -rw-r--r-- 1 root root 1196 2010-04-16 09:03 vmcoreinfo-2.6.32-21-generic -rw-r--r-- 1 root root 4029792 2010-04-16 09:01 vmlinuz-2.6.32-21-generic

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  • Blocking a distributed, consistent spam attack? Could it be something more serious?

    - by mattmcmanus
    I will do my best to try and explain this as it's strange and confusing to me. I posted a little while ago about a sustained spike in mysql queries on a VPS I had recently setup. It turned out to be a single post on a site I was developmenting. The post had over 30,000 spam comments! Since the site was one I was slowly building I hadn't configured the anti-spam comment software yet. I've since deleted the particular post which has given the server a break but the post's url keeps on getting hit. The frustrating thing is every hit is from a different IP. How do I even start to block/prevent this? Is this even something I need to worry about? Here are some more specific details about my setup, just to give some context: Ubuntu 8.10 server with ufw setup The site I'm building is in Drupal which now has Mollom setup for spam control. It wasn't configured before. The requests happen inconsistently. Sometimes it's every couple seconds and other times it's a an or so between hits. However it's been going on pretty much constantly like that for over a week. Here is a sample of my apache access log from the last 15 minutes just for the page in question: dev.domain-name.com:80 97.87.97.169 - - [28/Mar/2010:06:47:40 +0000] "POST http://dev.domain-name.com/comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 202.149.24.193 - - [28/Mar/2010:06:50:37 +0000] "POST /comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 193.106.92.77 - - [28/Mar/2010:06:50:39 +0000] "POST /comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 194.85.136.187 - - [28/Mar/2010:06:52:03 +0000] "POST /comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 220.255.7.13 - - [28/Mar/2010:06:52:14 +0000] "POST /comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 195.70.55.151 - - [28/Mar/2010:06:53:41 +0000] "POST /comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 71.91.4.31 - - [28/Mar/2010:06:56:07 +0000] "POST http://dev.domain-name.com/comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 98.209.203.170 - - [28/Mar/2010:06:56:10 +0000] "POST http://dev.domain-name.com/comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 24.255.137.159 - - [28/Mar/2010:06:56:19 +0000] "POST http://dev.domain-name.com/comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 77.242.20.18 - - [28/Mar/2010:07:00:15 +0000] "POST /comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 94.75.215.42 - - [28/Mar/2010:07:01:34 +0000] "POST /comment/reply/3 HTTP/1.0" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 89.115.2.128 - - [28/Mar/2010:07:03:20 +0000] "POST /comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 75.65.230.252 - - [28/Mar/2010:07:05:05 +0000] "POST http://dev.domain-name.com/comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 206.251.255.61 - - [28/Mar/2010:07:06:46 +0000] "POST /comment/reply/3 HTTP/1.0" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" dev.domain-name.com:80 213.194.120.14 - - [28/Mar/2010:07:07:22 +0000] "POST /comment/reply/3 HTTP/1.1" 404 5895 "http://dev.domain-name.com/blog/2009/11/23/another" "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)" I understand this is an open ended question, but any help or insight you could give would be much appreciated.

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  • PHP+Apache as forward/reverse proxy: ¿how to process client requests and server responses in PHP?

    - by Lightworker
    Hi! I'm having a lot of troubles with the propper configuration of Apache mod_proxy.so to work as desired... The main idea, is to create a proxy on a local machine in a network wich will have the ability to proces a client request (client connected through this Apache prepared proxy) in PHP. And also, it will have the capacity to process the server responses on PHP too. Those are the 2 funcionalities, and they are independent one from each other. Let me present a little schema of what I need to achive: As you can see here, there're 2 ways: blue one and red one. For the blue one, I basically conected a client (Machine B - cell phone) on my local network (home) and configured it to go thorugh a proxy, wich is the Machine A (personal computer) on the exactly same network. So let's say (not DHCP): Machine A: 192.168.1.40 -- Apache is running on this machine, and configured to listen port 80. Machine B (cell phone): 192.168.1.75 -- configured to go throug a proxy, wich is IP 192.168.1.75 and port 80 (basically, Machine A). After configuring Apache properly, wich is basically to remove the "#" from httpd.conf on the lines for the mod_proxy.so (main worker), mod_proxy_connect.so (SSL, allowCONNECT, ...) and mod_proxy_http.so (needed for handle HTTP request/responses) and having in my case, lines like this: # Implements a proxy/gateway for Apache. Include "conf/extra/httpd-proxy.conf" # Various default settings Include "conf/extra/httpd-default.conf" # Secure (SSL/TLS) connections Include "conf/extra/httpd-ssl.conf" wich gives me the ability to configure the file httpd-proxy.conf to prepare the forward proxy or the reverse proxy. So I'm not sure, if what I need it's a forward proxy or a reverse one. For a forward proxy I've done this: <IfModule proxy_module> <IfModule proxy_http_module> # # FORWARD Proxy # #ProxyRequests Off ProxyRequests On ProxyVia On <Proxy *> Order deny,allow # Allow from all Deny from all Allow from 192.168.1 </Proxy> </IfModule> </IfModule> wich basically passes all the packets normally to the server and back to the client. I can trace it perfectly (and testing that works) looking at the "access.log" from Apache. Any request I make with the cell phone, appears then on the Apache log. So it works. But here come the problem: I need to process those client requests. And I need to do it, in PHP. I have read a lot about this. I've read in detail the oficial site from Apache about mod_proxy. And I've searched a lot on forums, but without luck. So I thought about a first aproximation: 1) Forward proxy in Apache, passes all the packets and it's not possible to process them. This seems to be true, so, what about a reverse proxy? So I envisioned something like: ProxyRequests Off <Proxy *> Order deny,allow Allow from all </Proxy> ProxyPass http://www.google.com http://www.yahoo.com ProxyPassReverse http://www.google.com http://www.yahoo.com which is just a test, but this should cause on my cell phone that when trying to navigate to Google, I should be going to Yahoo, isn't it? But not. It doesn't work. So you really see, that ALL the examples on Apache reverse proxy, goes like: ProxyPass /foo http://foo.example.com/bar ProxyPassReverse /foo http://foo.example.com/bar wich means, that any kind of request in a local context, will be solved on a remote location. But what I needed is the inverse! It's that when asking for a remote site on my phone, I solve this request on my local server (the Apache one) to process it with a PHP module. So, if it's a forward proxy, I need to pass through PHP first. If it's a reverse proxy, I need to change the "going" direction to my local server one to process first on PHP. Then comes in mind second option: 2) I've seen something like: <Proxy http://example.com/foo/*> SetOutputFilter INCLUDES </Proxy> And I started to search for SetOutputFilter, SetInputFilter, AddOutputFilter and AddInputFilter. But I don't really know how can I use it. Seems to be good, or a solution to me, cause with somethin' like this, I should can add an Input filter to process on PHP the client requests and send back to the client what I programed/want (not the remote server response) wich is the BLUE path on schema, and I should have the ability to add an Output filter wich seems to give me the ability to process the remote server response befor sending it to the client, wich should be the RED path on the schema. Red path, it's just to read server responses and play with em. But nothing more. The Blue path, it's the important one. Cause I will send to the client whatever I want after procesing the requests. I so sorry for this amazingly big post, but I needed to explain it as well as I can. I hope someone will understand my problem, and will help me to solve it! Lot of thanks in advance!! :)

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  • Cyrus on CentOS with sasl / pam / ldap

    - by Oscar
    SASL/PAM/LDAP is driving me crazy... that's what I read a lot when googling for problems in this area, and what I experience myself :-S I'm trying to get Cyrus imap working for virtual hosting on CentOS with this authorisation backend and really don't know what's happening. In saslauthd I configured the LDAP search filter to use, but it looks like pam completely ignores it. Here's what I do for testing (done more tests but all with similar results): [root@testserv ~]# imtest -u [email protected] -a [email protected] WARNING: no hostname supplied, assuming localhost S: * OK [CAPABILITY IMAP4 IMAP4rev1 LITERAL+ ID STARTTLS] testserv. Cyrus IMAP4 v2.3.7-Invoca-RPM-2.3.7-7.el5_6.4 server ready C: C01 CAPABILITY S: * CAPABILITY IMAP4 IMAP4rev1 LITERAL+ ID STARTTLS ACL RIGHTS=kxte QUOTA MAILBOX-REFERRALS NAMESPACE UIDPLUS NO_ATOMIC_RENAME UNSELECT CHILDREN MULTIAPPEND BINARY SORT SORT=MODSEQ THREAD=ORDEREDSUBJECT THREAD=REFERENCES ANNOTATEMORE CATENATE CONDSTORE IDLE LISTEXT LIST-SUBSCRIBED X-NETSCAPE URLAUTH S: C01 OK Completed Please enter your password: C: L01 LOGIN [email protected] {6} S: + go ahead C: <omitted> S: L01 NO Login failed: authentication failure Authentication failed. generic failure Security strength factor: 0 C: Q01 LOGOUT * BYE LOGOUT received Q01 OK Completed Connection closed. The LDAP entry does exist (and so does the mailbox in Cyrus): [root@testserv ~]# ldapsearch -WxD cn=Manager,o=mydomain,c=com [email protected] Enter LDAP Password: # extended LDIF # # LDAPv3 # base <> with scope subtree # filter: [email protected] # requesting: ALL # # myuser, accounts, testserv.mydomain.com, mydomain, com dn: uid=myuser,ou=accounts,dc=testserv.mydomain.com,o=mydomain,c=com objectClass: top objectClass: person objectClass: organizationalPerson objectClass: inetOrgPerson objectClass: posixAccount objectClass: shadowAccount uidNumber: 16 uid: myuser gidNumber: 5 givenName: My sn: Name mail: [email protected] cn: My Name userPassword:: dYN5ebB0fXhNRn1pZllhRnJX7Uk= shadowLastChange: 15176 homeDirectory: /dev/null # search result search: 2 result: 0 Success # numResponses: 2 # numEntries: 1 This is what I get in /var/log/messages Aug 2 04:00:11 testserv cyrus/imap[12514]: auxpropfunc error invalid parameter supplied Aug 2 04:00:19 testserv saslauthd[5926]: do_auth : auth failure: [[email protected]] [service=imap] [realm=testserv.mydomain.com] [mech=pam] [reason=PAM auth error] ... /var/adm/auth.log Aug 2 04:00:11 testserv cyrus/imap[12514]: auxpropfunc error invalid parameter supplied Aug 2 04:00:11 testserv cyrus/imap[12514]: _sasl_plugin_load failed on sasl_auxprop_plug_init for plugin: ldapdb Aug 2 04:00:19 testserv saslauthd[5926]: DEBUG: auth_pam: pam_authenticate failed: User not known to the underlying authentication module Aug 2 04:00:19 testserv saslauthd[5926]: do_auth : auth failure: [[email protected]] [service=imap] [realm=testserv.mydomain.com] [mech=pam] [reason=PAM auth error] (AFAIK I can ignore the auxprop msg) ... and /var/log/slapd.log: Aug 2 04:00:19 testserv slapd[5968]: conn=61 fd=27 ACCEPT from IP=127.0.0.1:51403 (IP=0.0.0.0:389) Aug 2 04:00:19 testserv slapd[5968]: conn=61 op=0 BIND dn="" method=128 Aug 2 04:00:19 testserv slapd[5968]: conn=61 op=0 RESULT tag=97 err=0 text= Aug 2 04:00:19 testserv slapd[5968]: conn=61 op=1 SRCH base="o=mydomain,c=com" scope=2 deref=0 filter="([email protected])" Aug 2 04:00:19 testserv slapd[5968]: conn=61 op=1 SEARCH RESULT tag=101 err=0 nentries=0 text= Aug 2 04:00:19 testserv slapd[5968]: conn=61 op=2 UNBIND Aug 2 04:00:19 testserv slapd[5968]: conn=61 fd=27 closed These are the settings in In /etc/imapd.conf: sasl_mech_list: PLAIN LOGIN sasl_pwcheck_method: saslauthd ## sasl_auxprop_plugin: sasldb sasl_auto_transition: no and my sasl config: [root@testserv ~]# cat /etc/sysconfig/saslauthd # Directory in which to place saslauthd's listening socket, pid file, and so # on. This directory must already exist. SOCKETDIR=/var/run/saslauthd # Mechanism to use when checking passwords. Run "saslauthd -v" to get a list # of which mechanism your installation was compiled with the ablity to use. MECH=pam # Additional flags to pass to saslauthd on the command line. See saslauthd(8) # for the list of accepted flags. FLAGS="-c -r -O /etc/saslauthd.conf" [root@testserv ~]# cat /etc/saslauthd.conf ldap_servers: ldap://127.0.0.1/ ldap_search_base: dc=%d,o=mydomain,c=com ldap_auth_method: bind #ldap_filter: (|(uid=%u)((&(mail=%u@%d)(accountStatus=active))) ldap_filter: (&(mail=%u@%d)(accountStatus=active)) ldap_debug: 1 ldap_version: 3 The accountStatus=active is not in ldap yet, but that doesn't make a difference since I don't see it in the filter... that's not the reason for the failure. The weird thing is, I do get an error when I rename or remove /etc/saslauthd.conf, but when the file exists it seems happily ignored... The filter in slapd.log seems to be taken from /etc/ldap.conf. Apart from some timers, that only contains: host 127.0.0.1 base o=mydomain,c=com pam_login_attribute mail Outcommenting the pam_login_attribute results in this filter in slapd.log: filter="([email protected])" Pam-imap looks like this: [root@testserv ~]# cat /etc/pam.d/imap auth required pam_ldap.so debug account required pam_ldap.so debug #auth sufficient pam_unix.so likeauth nullok #auth sufficient pam_ldap.so use_first_pass #auth required pam_deny.so #account sufficient pam_unix.so #account sufficient pam_ldap.so The outcommented stuff is because I don't have the cyrus admin user in Ldap; that's a Linux user. That works fine when uncommented, but I still need to play around with that a little and first I wanna get imap working. Finally nsswitch: [root@testserv ~]# cat /etc/nsswitch.conf # # /etc/nsswitch.conf # # An example Name Service Switch config file. This file should be # sorted with the most-used services at the beginning. # # The entry '[NOTFOUND=return]' means that the search for an # entry should stop if the search in the previous entry turned # up nothing. Note that if the search failed due to some other reason # (like no NIS server responding) then the search continues with the # next entry. # # Legal entries are: # # nisplus or nis+ Use NIS+ (NIS version 3) # nis or yp Use NIS (NIS version 2), also called YP # dns Use DNS (Domain Name Service) # files Use the local files # db Use the local database (.db) files # compat Use NIS on compat mode # hesiod Use Hesiod for user lookups # [NOTFOUND=return] Stop searching if not found so far # # To use db, put the "db" in front of "files" for entries you want to be # looked up first in the databases # # Example: #passwd: db files nisplus nis #shadow: db files nisplus nis #group: db files nisplus nis passwd: compat ldap group: compat ldap shadow: compat ldap hosts: files dns bootparams: nisplus [NOTFOUND=return] files ethers: files netmasks: files networks: files protocols: files rpc: files services: files netgroup: nisplus publickey: nisplus automount: files nisplus aliases: files nisplus Any info where to start looking will be greatly appreciated! Thnx in advance

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  • How to convert html textfield/area data to server-side txt file? [closed]

    - by olijake
    How can I make a script that will convert the text/data in a html textfield/textarea and send it to the server, which then saves it as a .txt file for storage? NOTE: I am hosting a website(for testing purposes) using Apache 2.2 on a Windows 7 machine. I downloaded PHP version 5.4.7, but have not yet installed on my server yet (not sure if I will need it, but also not sure how to install it). 1st problem: Saving text to server Html page/section with title textfield, text textarea, and submit button. You would enter a title, the text/notes you need in the textfield, then press the submit button to have it store the text in the textarea, as a .txt file on the server called .txt. 2nd problem: Opening text from server Html with list of all txt files OR textfield for entering in title, then submit button to send the title of the requested .txt file to the server, which would then load it up on the page. Here is what I have so far: (let me know if there is something that I should change or if something just isn't correct in the index.html code I have right now.) <!DOCTYPE HTML> <html> <head> <title>Insert Title</title> <meta http-equiv="Content-Type" content="Text/HTML; charset=UTF-8"/> </head> <body> <form method="post" action="save.INSERT_FILETYPE" name="textfile" enctype="multipart/form-data"> <input type="text" name="title"><br/> <textarea rows="20" cols="100" id="text" name="text"></textarea><br/> <input type="submit" name="submit" value="Submit Text to Server"> </form><br/> <hr style="width: 100%; height: 4px;"><br/> <form method="post" action="open.INSERT_FILETYPE" name="textfile" enctype="multipart/form-data"> <input type="text" name="title"><br/> <input type="submit" name="submit" value="Submit Txt File Request"> </form><br/> <div>Opened text file displays here or goes on another page</div> </body> </html> I plan on using a server side language/script, but ANYTHING that gets the job done is fine. I already tried looking into using some ASP/jScript/PHP, but have had some trouble implementing it into my server. (ie: getting the modules loaded and telling the server what file types to parse.) I know this may be an extremely easy fix, but then in that case, hopefully you wouldn't mind helping me out a little :). If it turns out that this is MUCH more complicated than I expect, then feel free to let me know that, so I don't waste me time running in circles. I appreciate any help/assistance that you can provide, Thanks, Jake EDIT: Wrong Apache version. In response to the comments/closing of this thread: My question: "How exactly do I install the PHP module on the apache server? and is this even possible? and is this even recommended?" ^ In case I wasn't clear enough already To Clarify: I understand the basics of PHP, I just have trouble with INSTALLING PHP on the apache server. (I have used PHP before, but never successfully on apache (so far...)) For my script I wrote something similar to this already (using fopen() and a few other commands): <?php fopen("notes.txt", "r"); file_put_contents("notes.txt",teststring1); ?> I have used javascript for this task before also (although I prefer using PHP and server-side languages): <script language="javascript"> function WriteToFile(){ var fso = new ActiveXObject("Scripting.FileSystemObject"); var s = fso.CreateTextFile("C:\\NewFile.txt", true); var text=document.getElementById("TextArea1").innerText; s.WriteLine(text); s.WriteLine('***********************'); s.Close(); } </script>

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  • Understanding Windows 8 Recovery options

    - by stuffe
    Background: I am preparing a PC that I am sending to a relative abroad, who has little or no internet access, and next to no sensible options for getting IT support should anything go wrong. As such I am trying to provide a full set of recovery options such that they are able to reinstall the OS with minimum fuss or assistance if required. The PC is a brand new Acer laptop that came with Windows 7 pre-installed (and an associated recovery partition) and a free upgrade to Windows 8. I have installed Windows 8 from scratch performing a format and clean install from media I burned from the official download. The existing Windows 7 recovery partition is still there, and I can still boot from it. I have created recovery DVDs of that in case it is ever lost. Here are my recovery options so far. I can perform a factory reset of Win 7 via the recovery partition I can perform a factory reset of Win 7 via burned recovery DVDs I can re-install Windows 8 cleanly from a DVD All of these are useful, but not what I want, because the first 2 methods use Win 7, and still fill the machine with crapware, and the latter doesn't provide for any post-install customisation and software installation. So, I am looking to see what other options are available to perform a Windows 8 recovery that will be more than a simple install. I am aware that Win8 comes with some useful refresh tools: Refresh your PC - Re-install Win 8 over the top of your existing installation, recovering from any Windows corruption etc. I can run this from my current install, although it says some files are missing that will be provided by me install or recovery media, which seems to be code for stick your install DVD in, and it starts after I do that - unfortunately for this particular laptop you need to specify a particular WIFI driver or the install bombs out part way through with IRQL errors, and this refresh method skips the part where you can load a driver, so it's no use to me. I think I can fix this by creating a custom recovery image using the recimg.exe command but it takes hours to complete so I haven't tried it yet. Reset your PC - Perform a full install and lose all your files. Again it needs my Install media inserting before it will do anything, but then it provides an error (will include later when I recreate it...) Now, these recovery options look useful (in principal, although both are fail for me) but they rely on having a working system to access the tools, which leads me to the last option, of making a Recovery USB drive. I have made a recovery drive, and it should perform loads of useful things, including copying my WIN7 recovery partition to the drive, providing the above refresh and reset options, providing other troubleshooting options and also the ability to restore from a custom image, only none of them seem to work for me. Creating the Recovery Drive - the option to include my recovery partition is greyed out. The partition exists and works fine, why will it not copy it? Refresh - I imagine this would have the same issues as I described before, but this is moot because when I try it says that the "drive where Windows is installed is locked, please unlock the drive and try again" with no info on what that means and how to do it. Restore - Again, probably pointless as I can just use the DVD, but it also errors: "unable to reset your PC. A required drive partition is missing" System Restore - should let me roll back a bad driver etc as per normal in Windows, only it simply says "To use system restore you must specify which windows installation to restore. Restart this computer, select an operating system, and select system restore" ?!?! System Image Recovery - this seems to be offering to restore from a Windows system image, but this is deprecated in Windows 8, although you can still make one if you use the Windows 7 Backup tools, however the resultant file is too large to put on the USB stick as it's FAT formatted, and would be a massive stack of DVDs anyway. So useless. It would be nice it it would work with the custom recovery image you can use with the refresh command, but there seems no option to do this. Automatic Repair - some diagnostics, which seem useless as it happily tells me it can't fix my problem, even though I have none. Command Prompt - yay, this works! What on earth do I want to use it for... Had any of the above worked, it might be useful, but as any form of install still requires you to have the DVD, and any form of custom recovery image also requires you to have either a massive stack of DVDs or an NTFS formatted backup device in addition to the recovery drive, it sort of ruins the point. It doesn't seem rocket science. I want to create a bootable USB drive that I can refresh Windows over an existing install with, perform a clean reinstall to a bare system, or recovery a customised image with existing apps installed. If anyone can point me in a direction that allows me to make a single recovery drive do these all these things, I would appreciate it. I have a 32Gb USB3 thumb drive that I bought for this very purpose, but it's seems to be fighting to let me do anything useful. At this rate I will be making a DriveImageXML recovery stick and dumping the OS with that, which I know works, but isn't so elegant as using the proper tools..

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  • Installing nGinX Reverse Proxy on CentOS 5

    - by heavymark
    I'm trying to install nGinX as a reverse proxy on CentOS 5 with apache. The instructions to do this are here: http://wiki.mediatemple.net/w/(dv):Configure_nginx_as_reverse_proxy_web_server Note- in the instructions, for the url to get nginx I'm using the following: http://nginx.org/download/nginx-1.0.10.tar.gz Now here is my problem. After installing the required packages and running .configure I get the following: checking for OS + Linux 2.6.18-028stab094.3 x86_64 checking for C compiler ... found + using GNU C compiler + gcc version: 4.1.2 20080704 (Red Hat 4.1.2-51) checking for gcc -pipe switch ... found checking for gcc builtin atomic operations ... found checking for C99 variadic macros ... found checking for gcc variadic macros ... found checking for unistd.h ... found checking for inttypes.h ... found checking for limits.h ... found checking for sys/filio.h ... not found checking for sys/param.h ... found checking for sys/mount.h ... found checking for sys/statvfs.h ... found checking for crypt.h ... found checking for Linux specific features checking for epoll ... found checking for sendfile() ... found checking for sendfile64() ... found checking for sys/prctl.h ... found checking for prctl(PR_SET_DUMPABLE) ... found checking for sched_setaffinity() ... found checking for crypt_r() ... found checking for sys/vfs.h ... found checking for nobody group ... found checking for poll() ... found checking for /dev/poll ... not found checking for kqueue ... not found checking for crypt() ... not found checking for crypt() in libcrypt ... found checking for F_READAHEAD ... not found checking for posix_fadvise() ... found checking for O_DIRECT ... found checking for F_NOCACHE ... not found checking for directio() ... not found checking for statfs() ... found checking for statvfs() ... found checking for dlopen() ... not found checking for dlopen() in libdl ... found checking for sched_yield() ... found checking for SO_SETFIB ... not found checking for SO_ACCEPTFILTER ... not found checking for TCP_DEFER_ACCEPT ... found checking for accept4() ... not found checking for int size ... 4 bytes checking for long size ... 8 bytes checking for long long size ... 8 bytes checking for void * size ... 8 bytes checking for uint64_t ... found checking for sig_atomic_t ... found checking for sig_atomic_t size ... 4 bytes checking for socklen_t ... found checking for in_addr_t ... found checking for in_port_t ... found checking for rlim_t ... found checking for uintptr_t ... uintptr_t found checking for system endianess ... little endianess checking for size_t size ... 8 bytes checking for off_t size ... 8 bytes checking for time_t size ... 8 bytes checking for setproctitle() ... not found checking for pread() ... found checking for pwrite() ... found checking for sys_nerr ... found checking for localtime_r() ... found checking for posix_memalign() ... found checking for memalign() ... found checking for mmap(MAP_ANON|MAP_SHARED) ... found checking for mmap("/dev/zero", MAP_SHARED) ... found checking for System V shared memory ... found checking for POSIX semaphores ... not found checking for POSIX semaphores in libpthread ... found checking for struct msghdr.msg_control ... found checking for ioctl(FIONBIO) ... found checking for struct tm.tm_gmtoff ... found checking for struct dirent.d_namlen ... not found checking for struct dirent.d_type ... found checking for PCRE library ... found checking for system md library ... not found checking for system md5 library ... not found checking for OpenSSL md5 crypto library ... found checking for sha1 in system md library ... not found checking for OpenSSL sha1 crypto library ... found checking for zlib library ... found creating objs/Makefile Configuration summary + using system PCRE library + OpenSSL library is not used + md5: using system crypto library + sha1: using system crypto library + using system zlib library nginx path prefix: "/usr/local/nginx" nginx binary file: "/usr/local/nginx/sbin/nginx" nginx configuration prefix: "/usr/local/nginx/conf" nginx configuration file: "/usr/local/nginx/conf/nginx.conf" nginx pid file: "/usr/local/nginx/logs/nginx.pid" nginx error log file: "/usr/local/nginx/logs/error.log" nginx http access log file: "/usr/local/nginx/logs/access.log" nginx http client request body temporary files: "client_body_temp" nginx http proxy temporary files: "proxy_temp" nginx http fastcgi temporary files: "fastcgi_temp" nginx http uwsgi temporary files: "uwsgi_temp" nginx http scgi temporary files: "scgi_temp" It says if you get errors to stop and make sure packages are installed. I didn't get errors but as you can see I got several "not founds". Are those considered errors? If so how do I resolve that. And as noted in the link, I cannot install through yum, because it wont work with plesk then. Thanks!

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  • What is Causing this IIS 7 Web Service Sporadic Connectivity Error?

    - by dpalau
    On sporadic occasions we receive the following error when attempting to call an .asmx web service from a .Net client application: "The underlying connection was closed: A connection that was expected to be kept alive was closed by the server. Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host." By sporadic I mean that it might occur zero, once every few days, or a half-dozen times a day for some users. It will never occur for the first web service call of a user. And the subsequent (usually the same) call will always work immediately after the failure. The failures happen across a variety of methods in the service and usually happens between 15-20 seconds (according to the log) from the time of the request. Looking in the IIS site log for the particular call will show one or the other of the following windows error codes: 121: The semaphore timeout period has elapsed. 1236: The network connection was aborted by the local system. Some additional environment details: Running on internal network web farm consisting of two servers running IIS7 on Windows Server 2008 OS. These problems did not occur when running in an older IIS6 web farm of three servers running on Windows Server 2003 (and we use a single IIS6/2003 instance for our development and staging environments with no issues). EDIT: Also, all of these server instances are VMWare virtual machines, not sure if that is a surprise anymore or not. The web service is a .Net 2.0/3.5 compiled .asmx web service that has its own application pool (.Net 2.0, integrated pipeline). Only has Windows Authentication enabled. We have another web service on the farm that uses the same physical path as the primary service, the only difference being that Basic Authentication is enabled. This is used for a portion of our ERP system. Have tried using the same and different application pool - no effect on the error. This site isn't hit as often as the primary site and has never had an error. As mentioned, the error will only happen when called from the .Net client - not from other applications. The client application is always creating a new web service object for each request and setting the service credentials to System.Net.CredentialCache.DefaultCredentials. The application is either deployed locally to a client or run in a Citrix server session. Those users running in Citrix doesn't seem to experience the issue, only locally deployed clients. The Citrix servers and the web farm are located in the same physical location and are located in the same IP range (10.67.xx.xx). Locally deployed clients experiencing the error are located elsewhere (10.105.xx.xx, 10.31.xx.xx). I've checked the OS logs to see if I can see any problems but nothing really sticks out. EDIT: Actually, I myself just ran into the error a little bit ago. I decided to check out the logs again and saw that there was a Security log entry of "Audit Failure" at the 'same' time (IIS log entry at 1:39:59, event log entry at 1:39:50). Not sure if this is a coincidence or not, I'll have to check out the logs of previous errors. I'm probably grasping for straws but the details: Log Name: Security Source: Microsoft-Windows-Security-Auditing Date: 7/8/2009 1:39:50 PM Event ID: 5159 Task Category: Filtering Platform Connection Level: Information Keywords: Audit Failure User: N/A Computer: is071019.<**.net Description: The Windows Filtering Platform has blocked a bind to a local port. Application Information: Process ID: 1260 Application Name: \device\harddiskvolume1\windows\system32\svchost.exe Network Information: Source Address: 0.0.0.0 Source Port: 54802 Protocol: 17 Filter Information: Filter Run-Time ID: 0 Layer Name: Resource Assignment Layer Run-Time ID: 36 I've also tried to use Failed Request Tracing in IIS7 but the service call never actually gets to where FRT can capture it (even though the failure is logged in the web service log). The network infrastructure group said they checked out the DNS and any NIC settings are correct so there is no 'flapping'. Everything pans out. I'm not sure that they checked out any domain controller servers though to see if that could be an issue. Any ideas? Or any other debugging strategies to get to the bottom of this? I'm just the developer in charge of the software and don't really have the knowledge on what to investigate from the networking side of things - although it does sound like a networking issue to me based on what is happening. Thanks in advance for any help.

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  • Windows 7 Machine Makes Router Drop -All- Wireless Connections [closed]

    - by Hammer Bro.
    Note: I accidentally originally posted this question over at SuperUser, and I still think the issue is caused by some low-level networking practice of Windows 7, but I think the expertise here would be more apt to figuring it out. Apologies for the cross-post. Some background: My home network consists of my Desktop, a two-month old Windows 7 (x64) machine which is online most frequently (N-spec), as well as three other Windows XP laptops (all G) that only connect every now and then (one for work, one for Netflix, and the other for infrequent regular laptop uses). I used to have a Belkin F5D8236-4 wireless router, and everything worked great. A week ago, however, I found out that the Belkin absolutely in no way would establish a VPN connection, something that has become important for work. So I bought a Netgear WNR3500v2/U/L. The wireless was acting a little sketchy at first for just the Windows 7 machine, but I thought it had something to do with 802.11N and I was in a hurry so I just fished up an ethernet cable and disabled the computer's wireless. It has now become apparent, though, that whenever the Windows 7 machine is connected to the router, all wireless connections become unstable. I was using my work laptop for a solid six hours today with no trouble, having multiple SSH connections open over VPN and streaming internet radio in the background. Then, within two minutes of turning on this Windows 7 box, I had lost all connectivity over the wireless. And I was two feet away from the router. The same sort of thing happens on all of the other laptops -- Netflix can be playing stuff all weekend, but if I come up here and do things on this (W7) computer, the streaming will be dead within ten minutes. So here are my basic observations: If the Windows 7 machine is off, then all connections will have a Signal Strength of Very Good or Excellent and a Speed of 48-54 Mbps for an indefinite amount of time. Shortly after the Windows 7 machine is turned on, all wireless connections will experience a consistent decline in Speed down to 1.0 Mbps, eventually losing their connection entirely. These machines will continue to maintain 70% signal strength, as observed by themselves and router. Once dropped, a wireless connection will have difficulty reconnecting. And, if a connection manages to become established, it will quickly drop off again. The Windows 7 machine itself will continue to function just fine if it's using a wired connection, although it will experience these same issues over the wireless. All of the drivers and firmwares are up to date, and this happened both with the stock Netgear firmware as well as the (current) DD-WRT. What I've tried: Making sure each computer is being assigned a distinct IP. (They are.) Disabling UPnP and Stateful Packet Inspection on the router. Disabling Network Sharing, SSDP Discovery, TCP/IP NetBios Helper and Computer Browser services on the Windows 7 machine. Disabling QoS Packet Scheduler, IPv6, and Link Layer Topology Discovery options on my ethernet controller (leaving only Client for Microsoft Networks, File and Printer Sharing, and IPv4 enabled). What I think: It seems awfully similar to the problems discussed in detail at http://social.msdn.microsoft.com/Forums/en/wsk/thread/1064e397-9d9b-4ae2-bc8e-c8798e591915 (which was both the most relevant and concrete information I could dig up on the internet). I still think that something the Windows 7 IP stack (or just Operating System itself) is doing is giving the router fits. However, I could be wrong, because I have two key differences. One is that most instances of this problem are reported as the entire router dying or restarting, and mine still works just fine over the wired connection. The other is that it's a new router, tested with both the factory firmware and the (I assume) well-maintained DD-WRT project. Even if Windows 7 is still secretly sending IPv6 packets or the TCP Window Scaling implementation that I hear Vista caused some trouble with (even though I've tried my best to disable anything fancy), this router should support those functions. I don't want to get a new or a replacement router unless someone can convince me that this is a defective unit. But the problem seems too specific and predictable by my instincts to be a hardware hiccup. And I don't want to deal with the inevitable problems that always seem to take half a day to resolve when getting a new router, since I'm frantically working (including tomorrow) to complete a project by next week's deadline. Plus, I think in the worst case scenario, I could keep this router connected directly to the modem, disable its wireless entirely, and connect the old Belkin to it directly. That should allow me to still use VPN (although I'll have to plug my work laptop directly into that router), and then maintain wireless connections for all of the other computers. But that feels so wrong to me. Anyone have any ideas what the cause and possible solution could be? Clarifications: The Windows 7 machine is directly connected via an ethernet cable to the router for everything above. But while it is online, all other computers' wireless connections become unusable. It is not an issue of signal strength or interference -- no other devices within scanning range are using Channel 1, and the problem will affect computers that are literally feet away from the router with 95% signal strength.

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  • Cross-platform distributed fault-tolerant (disconnected operation/local cache) filesystem

    - by Adrian Frühwirth
    We are facing a design "challenge" where we are required to set up a storage solution with the following properties: What we need HA a scalable storage backend offline/disconnected operation on the client to account for network outages cross-platform access client-side access from certainly Windows (probably XP upwards), possibly Linux backend integrates with AD/LDAP (permission management (user/group management, ...)) should work reasonably well over slow WAN-links Another problem is that we don't really know all possible use cases here, if people need to be able to have concurrent access to shared files or if they will only be accessing their own files, so a possible solution needs to account for concurrent access and how conflict management would look in this case from a user's point of view. This two years old blog posts sums up the impression that I have been getting during the last couple of days of research, that there are lots of current übercool projects implementing (non-Windows) clustered petabyte-capable blob-storage solutions but that there is none that supports disconnected operation nicely and natively, but I am hoping that we have missed an obvious solution. What we have tried OpenAFS We figured that we want a distributed network filesystem with a local cache and tested OpenAFS (which, as the only currently "stable" DFS supporting disconnected operation, seemed the way to go) for a week but there are several problems with it: it's a real pain to set up there are no official RHEL/CentOS packages the package of the current stable version 1.6.5.1 from elrepo randomly kernel panics on fresh installs, this is an absolute no-go Windows support (including the required Kerberos packages) is mystical. The current client for the 1.6 branch does not run on Windows 8, the current client for the 1.7 does but it just randomly crashes. After that experience we didn't even bother testing on XP and Windows 7. Suffice to say, we couldn't get it working and the whole setup has been so unstable and complicated to setup that it's just not an option for production. Samba + Unison Since OpenAFS was a complete disaster and no other DFS seems to support disconnected operation we went for a simpler idea that would sync files against a Samba server using Unison. This has the following advantages: Samba integrates with ADs; it's a pain but can be done. Samba solves the problem of remotely accessing the storage from Windows but introduces another SPOF and does not address the actual storage problem. We could probably stick any clustered FS underneath Samba, but that means we need a HA Samba setup on top of that to maintain HA which probably adds a lot of additional complexity. I vaguely remember trying to implement redundancy with Samba before and I could not silently failover between servers. Even when online, you are working with local files which will result in more conflicts than would be necessary if a local cache were only touched when disconnected It's not automatic. We cannot expect users to manually sync their files using the (functional, but not-so-pretty) GTK GUI on a regular basis. I attempted to semi-automate the process using the Windows task scheduler, but you cannot really do it in a satisfactory way. On top of that, the way Unison works makes syncing against Samba a costly operation, so I am afraid that it just doesn't scale very well or even at all. Samba + "Offline Files" After that we became a little desparate and gave Windows "offline files" a chance. We figured that having something that is inbuilt into the OS would reduce administrative efforts, helps blaming someone else when it's not working properly and should just work since people have been using this for years. Right? Wrong. We really wanted it to work, but it just doesn't. 30 minutes of copying files around and unplugging network cables/disabling network interfaces left us with (silent! there is only a tiny notification in Windows explorer in the statusbar, which doesn't even open Sync Center if you click on it!) undeletable files on the server (!) and conflicts that should not even be conflicts. In the end, we had one successful sync of a tiny text file, everything else just exploded horribly. Beyond that, there are other problems: Microsoft admits that "offline files" in Windows XP cannot cope with "large files" and therefore does not cache/sync them at all which would mean those files become unavailable if the connection drop In Windows 7 the feature is only available in the Professional/Ultimate/Enterprise editions. Summary Unless there is another fault-tolerant DFS that supports Windows natively I assume that stacking a HA Samba cluster on top of something like GlusterFS/Lustre/whatnot is the only option, but I hope that I am wrong here. How do other companies allow fault-tolerant network access to redundant storage in a heterogeneous environment with Windows?

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  • Open source CMS for a university department

    - by Greg Kuperberg
    I realize that this type of question gets asked over and over again. Nonetheless, I want to ask a more specific version. I'm in a university math department. Long ago our sysadmins (or just one at the time) switched to a web content management system. At the time, Zope looked like an informed choice. We have used Zope for years, but at least in my opinion, it has always been a controversial decision. At the time I didn't understand why it was so important to have a web CMS. Now I see that it certainly is important, but I don't know that it should be Zope. The good (even necessary) features of Zope for us are: It's free and Linux-based. It is a true CMS and not something else (e.g. wiki or blog) It lets you write HTML and scripts. What I really don't like about Zope is that the outcome of using it is all-or-nothing in a lot of ways. At least in convenient use, it ends up dividing the enterprise into superusers who can do everything, and lusers who can't do anything (except write their own home pages in plain HTML). It has a huge user manual, which end users won't have time to read. Somehow with the access permissions, the simple thing to do is to let a few admins access all of the source and data and that's it. Since this is a math department, the user base varies from real novices to people who understand computers reasonably well. But as it stands, any change that involves Zope has to go through the sysadmins. When the sysadmins are in a hurry, sometimes they will also just add plain HTML pages to the web site instead of using the Zope framework. It doesn't help matters that Zope is fairly disk-intensive and fairly hype-intensive. Not to dwell on Zope too much, but I am wondering what is the right web CMS for a mixed user base of terminal novices, quick studies, and experienced users. Some users might want intermediate permissions, e.g. read permission but not write permission, or permission to change some subset of the pages or see some subset of the database tables. Also it should be Linux-based and open source and a little bit scalable, and of course widely used and well-supported is a good idea. I might guess that the answer is Drupal just because that was the general answer before, but I don't know if it is the right type of CMS for this purpose. (But note that Python is a relatively popular language in a math department, among other reasons because Sage is based on Python.) I can see that I didn't completely define the question and that people are guessing what type of site it is. It is the UC Davis Math Department. The main structure of the site is not suitable for a wiki and it is also not the same thing as a course environment like Moodle. Rather, the site is mostly structured as a generic medium-small enterprise. Some components of the site could be a wiki, Moodle, LaTeX plugin, Request Tracker, etc. However, the main issue is not these components. The main issue is that it would be better to decentralize management of the site. Right now, everything that is in the Zope CMS has to go through the sysadmins. Every other user in the department either has to put in a request to them, or write their own web pages with no help from Zope. There are two main reasons for this: (1) Other people in the department don't have time to read the Zope manual. (2) It's a hassle to set up intermediate permissions in Zope. However, there are other people in the department who know how to write computer programs and use markup languages. I wouldn't want a solution that assumes that users either can't be trusted with much more than drag-and-drop, or that they are IT professionals who sleep with documentation manuals. I'm wondering if Plone/Zope still has this quality, since certainly Zope by itself does. But I also wonder sometimes if common-sense flexibility is unfashionable these days, and that things in general have be either mindlessly easy or incredibly powerful.

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  • Error attempting to log into Redmine through IIS 7.5 Reverse Proxy

    - by dneaster3
    I am trying to set up Redmine as a subdirectory of our department's intranet site, and also to rebrand it as "Workflow" using IIS's URL Rewrite extension. I have it "working" in that it will serve the page with all the correct rewrites in both the URL and the HTML code. However, when I try to submit a form (including logging in to redmine), IIS gives me one of the the following errors: Your browser sent a request that this server could not understand. or The specified CGI application encountered an error and the server terminated the process. Here's the setup: Redmine installed on a local Windows XP machine using the Bitnami all-in-one installer, which includes: Apache 2 Ruby-on-Rails MySQL Redmine Thin Redmine runs locally at http:/localhost/redmine Redmine runs over the intranet http:/146.18.236.xxx/redmine Windows Server + IIS 7.5 serving up an ASP.NET intranet web application mydept.mycompany.com IIS Extensions Url Rewrite and AAR installed Reverse proxy settings for IIS (shown below) to serve Redmine at mydept.mycompany.com/workflow <rewrite> <rules> <rule name="Route requests for workflow to redmine server" stopProcessing="true"> <match url="^workflow/?(.*)" /> <conditions> <add input="{CACHE_URL}" pattern="^(https?)://" /> </conditions> <action type="Rewrite" url="{C:1}://146.18.236.xxx/redmine/{R:1}" logRewrittenUrl="true" /> <serverVariables> <set name="HTTP_ACCEPT_ENCODING" value="" /> <set name="ORIGINAL_HOST" value="{HTTP_HOST}" /> </serverVariables> </rule> </rules> <outboundRules rewriteBeforeCache="true"> <clear /> <preConditions> <preCondition name="isHTML" logicalGrouping="MatchAny"> <add input="{RESPONSE_CONTENT_TYPE}" pattern="^text/html" /> <add input="{RESPONSE_CONTENT_TYPE}" pattern="^text/plain" /> <add input="{RESPONSE_CONTENT_TYPE}" pattern="^application/.*xml" /> </preCondition> <preCondition name="isRedirection"> <add input="{RESPONSE_STATUS}" pattern="3\d\d" /> </preCondition> </preConditions> <rule name="Rewrite outbound relative URLs in tags" preCondition="isHTML"> <match filterByTags="A, Area, Base, Form, Frame, Head, IFrame, Img, Input, Link, Script" pattern="^/redmine/(.*)" /> <action type="Rewrite" value="/workflow/{R:1}" /> </rule> <rule name="Rewrite outbound absolute URLs in tags" preCondition="isHTML"> <match filterByTags="A, Area, Base, Form, Frame, Head, IFrame, Img, Input, Link, Script" pattern="^(https?)://146.18.236.xxx/redmine/(.*)" /> <action type="Rewrite" value="{R:1}://mydept.mycompany.com/workflow/{R:2}" /> </rule> <rule name="Rewrite tags with hypenated properties missed by IIS bug" preCondition="isHTML"> <!-- http://forums.iis.net/t/1200916.aspx --> <match filterByTags="None" customTags="" pattern="(\baction=&quot;|\bsrc=&quot;|\bhref=&quot;)/redmine/(.*?)(&quot;)" /> <conditions logicalGrouping="MatchAll" trackAllCaptures="true" /> <action type="Rewrite" value="{R:1}/workflow/{R:2}{R:3}" /> </rule> <rule name="Rewrite Location Header" preCondition="isRedirection"> <match serverVariable="RESPONSE_LOCATION" pattern="^http://[^/]+/(.*)" /> <conditions> <add input="{ORIGINAL_URL}" pattern=".+" /> <add input="{URL}" pattern="^/(workflow|redmine)/.*" /> </conditions> <action type="Rewrite" value="http://{ORIGINAL_URL}/{C:1}/{R:1}" /> </rule> </outboundRules> </rewrite> <urlCompression dynamicCompressionBeforeCache="false" /> Any help that you can provide would be appreciated. I get the impression that I'm close adn that it is just one little setting here or there, but I can't seem to make it work.

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  • Installing Windows on HP Proliant Servers without SmartStart

    - by Fitzroy
    I have a PXE server for deploying Windows XP and Windows 7 to workstations. The process is as follows: Boot the workstation from the NIC. Workstation sends a DHCP request. DHCP server responds with an IP address and the location of the PXE server. Workstation downloads WinPE image file from PXE server via TFTP Workstation stores WinPE image file in memory and executes it. Once booted into WinPE, I connect to a network share to gain access to either the Windows XP or Windows 7 installation files. A custom script is launched to guide you through the process of formatting and partitioning the hard drive(s) (using DISKPART and FORMAT). Another custom script asks for details such as the hostname to assign to the workstation. The answers provided are used to build an unattended answer file (SIF [Setup Information File] for WinXP and XML for Win7). The Windows setup EXE is launched, passing the unattended answer file to it as a parameter. The Windows XP and Windows 7 installation sources have been customised to include the drivers for our Dell workstations. They also run a number of scripts upon first booting up to install software packages. This process works very well for our workstations and I would now like to use it for building our servers too. The vast majority of our servers are HP Proliant DL360 G6, DL380 G5 and DL380 G6. They’re running Windows Server 2003 (various editions) or 2008 (various editions). To date, we have always built the HP Proliant servers using the SmartStart CD provided. SmartStart does three useful things for us: Setup RAID with HP Array Configuration Utility (ACU). Installs and configures SNMP Installs various HP Tools for Windows (HP Array Configuration Utility, HP Array Diagnostic Utility, HP Proliant Integrated Management Log Viewer, etc) Using SmartStart I have never had to manually download and install Windows drivers for network, sound, video, etc. I'm not sure if this is because SmartStart copies drivers from the CD during setup, or whether Windows just has the drivers natively in its driver CAB. If I abandon the SmartStart CD in favour of my PXE server I would have to do the following: As I wont have access to ACU, I'll configure the RAID (before booting to the PXE server) by pressing F8 (during the boot process) to access Option ROM Configuration for Arrays (ORCA). Installation of SNMP and the HP Tools will have to be installed once the Windows installation is complete using the Proliant Support Pack. Is this method OK? Is there anything that the SmartStart CD does that I'll be unable to do by other means? Are there any disadvantages to not using the SmartStart CD? Many thanks. UPDATE 05/01/12 I’ve been reading through the SmartStart Scripting Toolkit documentation. The scripting toolkit contains command line tools which work within WinPE and can such things as configure BIOS settings, configure an array and setup ILO. I’m personally not too bothered about configuring BIOS settings as I rarely deviate from the defaults (unless the server is to be a Hyper-V host). I’m not too fussed about being able to configure the array from within WinPE, as I’m happy to just press F8 and use Option ROM Configuration for Arrays (ORCA). Although, if it’s easy enough to do, I will explore this further, as it saves time if everything can be configured from within WinPE. One of the nice features all the tools possess is that you can pass input files to them. EG. Configure one server to your requirements, capture its configuration to a file (using the appropriate tool), you can then use the tool on other servers passing the input file with the captured configuration. Array controller drivers appear to be included with the toolkit along with example of how to incorporate them within a WinPE build. I suppose WinPE won’t be able to see logical volumes (I.E 2x physical disks in a RAID 1 configuration) without the array controller drivers? I mentioned in my post that SmartStart normally installs a bunch of Windows HP tools for you. I’ve had a look today, and if you run the SmartStart CD from within Windows all the tools can be installed. Therefore I can do this after the Windows installation is complete. The SmartStart CD appears to contain a lot Windows drivers. I can customise my Windows 2008 source to incorporate these drivers. However, I understand that incorporating an array controller driver is a little different to most drivers. I believe that you have to provide the driver during the very early stages of the Windows setup. I’m working through the Scripting Toolkit documentation to try and work this out...

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