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  • Running migration on server when deploying with capistrano

    - by Pandafox
    Hi, I'm trying to deploy my rails application with capistrano, but I'm having some trouble running my migrations. In my development environment I just use sqlite as my database, but on my production server I use MySQL. The problem is that I want the migrations to run from my server and not my local machine, as I am not able to connect to my database from a remote location. My server setup: A debian box running ngnix, passenger, mysql and a git repository. What is the easiest way to do this? update: Here's my deploy script: set :application, "example.com" set :domain, "example.com" set :scm, :git set :repository, "[email protected]:project.git" set :use_sudo, false set :deploy_to, "/var/www/example.com" role :web, domain role :app, domain role :db, "localhost", :primary = true after "deploy", "deploy:migrate" When I run cap deploy, everything is working fine until it tries to run the migration. Here's the error I'm getting: ** [deploy:update_code] exception while rolling back: Capistrano::ConnectionError, connection failed for: localhost (Errno::ECONNREFUSED: Connection refused - connect(2)) connection failed for: localhost (Errno::ECONNREFUSED: Connection refused - connect(2))) This is why I need to run the migration from the server and not from my local machine. Any ideas?

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  • System information shown when booting Debian

    - by WebDevHobo
    When booting Debian, you'll see it printing a lot of information about the system variables and such. I don't really need to see all that, so I'd like to modify some scripts to make sure that on boot, it just does what it has to do, without printing it on the screen. Just something I fancy. Offcourse, still seeing errors would be nice. But that long slur of text, I could do without. I've tried looking it up, but I can't find documentation on this specific thing anywhere.

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  • Check for modification failure in content Integration using visualSvn sever and cruise control.net

    - by harun123
    I am using CruiseControl.net for continous integration. I've created a repository for my project using VisualSvn server (uses Windows Authentication). Both the servers are hosted in the same system (Os-Microsoft Windows Server 2003 sp2). When i force build the project using CruiseControl.net "Failed task(s): Svn: CheckForModifications" is shown as the message. When i checked the build report, it says as follows: BUILD EXCEPTION Error Message: ThoughtWorks.CruiseControl.Core.CruiseControlException: Source control operation failed: svn: OPTIONS of 'https://sp-ci.sbsnetwork.local:8443/svn/IntranetPortal/Source': **Server certificate verification failed: issuer is not trusted** (https://sp-ci.sbsnetwork.local:8443). Process command: C:\Program Files\VisualSVN Server\bin\svn.exe log **sameUrlAbove** -r "{2010-04-29T08:35:26Z}:{2010-04-29T09:04:02Z}" --verbose --xml --username ccnetadmin --password cruise --non-interactive --no-auth-cache at ThoughtWorks.CruiseControl.Core.Sourcecontrol.ProcessSourceControl.Execute(ProcessInfo processInfo) at ThoughtWorks.CruiseControl.Core.Sourcecontrol.Svn.GetModifications (IIntegrationResult from, IIntegrationResult to) at ThoughtWorks.CruiseControl.Core.Sourcecontrol.QuietPeriod.GetModifications(ISourceControl sourceControl, IIntegrationResult lastBuild, IIntegrationResult thisBuild) at ThoughtWorks.CruiseControl.Core.IntegrationRunner.GetModifications(IIntegrationResult from, IIntegrationResult to) at ThoughtWorks.CruiseControl.Core.IntegrationRunner.Integrate(IntegrationRequest request) My SourceControl node in the ccnet.config is as shown below: <sourcecontrol type="svn"> <executable>C:\Program Files\VisualSVN Server\bin\svn.exe</executable> <trunkUrl> check out url </trunkUrl> <workingDirectory> C:\ProjectWorkingDirectories\IntranetPortal\Source </workingDirectory> <username> ccnetadmin </username> <password> cruise </password> </sourcecontrol> Can any one suggest how to avoid this error?

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  • Value get changed even though I'm not using reference

    - by atch
    In code: struct Rep { const char* my_data_; Rep* my_left_; Rep* my_right_; Rep(const char*); }; typedef Rep& list; ostream& operator<<(ostream& out, const list& a_list) { int count = 0; list tmp = a_list;//----->HERE I'M CREATING A LOCAL COPY for (;tmp.my_right_;tmp = *tmp.my_right_) { out << "Object no: " << ++count << " has name: " << tmp.my_data_; //tmp = *tmp.my_right_; } return out;//------>HERE a_list is changed } I've thought that if I'll create local copy to a_list object I'll be operating on completely separate object. Why isn't so? Thanks.

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  • In browser trusted application Silverlight 5

    - by Philippe
    With the new Silverlight 5, we can now have a In-Browser elevated-trust application. However, I'm experiencing some problems to deploy the application. When I am testing the application from Visual Studio, everything works fine because it automatically gives every right if the website is hosted on the local machine (localhost, 127.0.0.1). I saw on MSDN that I have to follow 3 steps to make it work on any website: Signed the XAP - I did it following the Microsoft tutorial Install the Trusted publishers certificate store - I did it too following the Microsoft Tutorial Adding a Registry key with the value : AllowElevatedTrustAppsInBrowser. The third step is the one I am the most unsure about. Do we need to add this registry key on the local machine or on the server ? Is there any automatic function in silverlight to add this key or its better to make a batchfile? Even with those 3 steps, the application is still not working when called from another url than localhost. Does anybody has successfully implemented a In-browser elevated-trust application? Do you see what I'm doing wrong? Thank you very much! Philippe, Sources: - http://msdn.microsoft.com/en-us/library/gg192793(v=VS.96).aspx - http://pitorque.de/MisterGoodcat/post/Silverlight-5-Tidbits-Trusted-applications.aspx

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  • Log Files from bash script output

    - by neildeadman
    I have a script that runs (this works fine). I'd like to produce logfiles from its output and still show it on screen. I have this command that creates three files from this blog: ((./fk.sh 2>&1 1>&3 | tee errors.log) 3>&1 1>&2 | tee output.log) 2>&1 | tee final.log This does exactly what I want it to. My only issue is that I create files in my script and copy them somewhere, and I'd like to copy these logfiles there too, which I can't do whilst this script is running. I also wanted to make it easier for any user to run my script, so I created another script to run this script. According to this post (see last post) I can put a . before the script name and I can use variables assigned in my called script from the first script if I use them in the first. It doesn't seem to work though and I can't figure out why or find alternative methods. Can anyone help?

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  • Configure all hosts, then create a list of the config for all hosts?

    - by AME
    I deployed a huge number of hosts with Ansible - which did work very nice. Each host got its individual settings and configuration. Now I'd like to generate a config file for another system that uses these hosts. For it, I need for every host a part of the generated configuration (the one that configures the database). Here is an example of the situation with two hosts having different configuration and the other system that uses a part of the Ansible-generated configuration: host1 ansible configured dbA host2 ansible configured dbQ The other system: host1 = dbA host2 = dbQ The values are computed differently (dbQ instead of dbB for host2 for example) if it belongs in a different cluster and so on, making it unpractical to just read out host configuration from the host_vars. I believe I would need to iterate over the hosts and let Ansible figure out the computed values for the variables like it would when deploying, but I do not know how to put that result in one template. Please advise :)

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  • crontab environment

    - by Adamski
    I have written various scripts to launch Java server applications, which are typically run for 24 hours before being shut down (by invoking the same script with a different parameter). The script relies on environment variables defined in a file: ~/<user>.env, which I source from .bashrc. This works fine when invoking the script from the command line but if I want to add the script as a crontab entry I run into the problem where .bashrc isn't read. My question: What is the best practice approach for solving this problem? I realise I could define a crontab entry such as: * * * * 1-5 /usr/bin/bash -c '. /home/myuser/myuser.env && /home/myuser/scripts/myscript.sh' ... but this seems plain ugly. Alternatively I could source myuser.env at the beginning of every script, but this would become a nightmare to maintain. Any help appreciated.

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  • Running an executable on network share with CustomAction with wix?

    - by martin
    Hello, i have created a msi-package which compresses some xml-files to a zip-file during installation. I have created a CustomAction for this purposes: <CustomAction Id="CompressMy" BinaryKey="zipEXE" ExeCommand="a -tzip &quot;[TEMPLATE_DIR]my.zip&quot; &quot;[TempSourceFolder]data.xml&quot;" Return="check" HideTarget="no" Impersonate="no" Execute="deferred" /> The installation works fine, if i try to install to a local drive, but recently a customer wanted to install [TEMPLATE_DIR] to a network drive on Windows Vista. The CustomAction fails, because of the elevated install-user hasn't mapped the network drive, even if the installer-calling user has mapped the drive. This happens also, if I try to install to an unc-path. I use 7zip for compressing. I have added it to my msi-package. I have tried to set Impersonate="yes", but then the Installations fails, if my TEMPLATE_DIR is f.e. the ProgramData-dir. Do you have any idea what i can do? I thinked about checking if TEMPLATE_DIR is a network path, but I didn't know how i can check this. Or do you have any other Ideas how I can provide a local and a network installation while using this custom action. Would be great if there are any advices, greetings, Martin

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  • Best practises for Magento Deployment

    - by Spongeboy
    I am looking setting up a deployment process for a highly customised Magento site, and was wondering how other people do this. I will be setting up dev, UAT and prod environments. All the Magento files will be in source control (SVN). At this stage, I can't see any requirements for changing the DB, so the 3 databases will be manually maintained. Specifically, How do you apply Magento upgrades? (Individually in each env, or on dev then roll out, or just give up on upgrades?) What files/folders do leave alone in each environment (e.g. magento/app/etc/local.xml) Do you restrict developers to editing specific files/folders? Do you restrict theme designers to editing specific files/folders? How do you manage database changes? Theme Designer Files/Folders Designers can restricted to editing the following folders- app/design/frontend/your_interface/your_theme/layout/ app/design/frontend/your_interface/your_theme/template/ app/design/frontend/your_interface/your_theme/locale/ skin/frontend/your_interface/your_theme/ Extension Developer Files/Folders Extension developers can edit the following folders/files- /app/code/local /app/etc/modules/<Namespace>_<Module>.xml Database environment management As the store's base URL is stored in the database, you cannot just copy databases between environments. Options include- Overriding the base url in php. Blog article on setting up dev and staging databases Changing the base url in the database after copying. (Where is this stored?) Doing a MySQLDump or backup, then doing a replace on the URL in the SQL file.

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  • JavaScript Exception/Error Handling Not Working

    - by Seán Hayes
    This might be a little hard to follow. I've got a function inside an object: f_openFRHandler: function(input) { console.debug('f_openFRHandler'); try{ //throw 'foo'; DragDrop.FileChanged(input); //foxyface.window.close(); } catch(e){ console.error(e); jQuery('#foxyface_open_errors').append('<div>Max local storage limit reached, unable to store new images in your browser. Please remove some images and try again.</div>'); } }, inside the try block it calls: this.FileChanged = function(input) { // FileUploadManager.addFileInput(input); console.debug(input); var files = input.files; for (var i = 0; i < files.length; i++) { var file = files[i]; if (!file.type.match(/image.*/)) continue; var reader = new FileReader(); reader.onload = (function(f, isLast) { return function(e) { if (files.length == 1) { LocalStorageManager.addImage(f.name, e.target.result, false, true); LocalStorageManager.loadCurrentImage(); //foxyface.window.close(); } else { FileUploadManager.addFileData(f, e.target.result); // add multiple files to list if (isLast) setTimeout(function() { LocalStorageManager.loadCurrentImage() },100); } }; })(file, i == files.length - 1); reader.readAsDataURL(file); } return true; LocalStorageManager.addImage calls: this.setItem = function(data){ localStorage.setItem('ImageStore', $.json_encode(data)); } localStorage.setItem throws an error if too much local storage has been used. I want to catch that error in f_openFRHandler (first code sample), but it's being sent to the error console instead of the catch block. I tried the following code in my Firebug console to make sure I'm not crazy and it works as expected despite many levels of function nesting: try{ (function(){ (function(){ throw 'foo' })() })() } catch(e){ console.debug(e) } Any ideas?

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  • Why am I getting 'Argument count mismatch' error here?

    - by Leon
    I have a Document class, Intro class and Nav class. The Intro class runs first, then sends a custom dispatch event to run the Nav class, but I'm getting this error: removed Intro ArgumentError: Error #1063: Argument count mismatch on com.secrettowriting.StanPlayer.ui::Navigation/addNav(). Expected 0, got 1. at flash.events::EventDispatcher/dispatchEventFunction() at flash.events::EventDispatcher/dispatchEvent() at com.secrettowriting.StanPlayer.display::Intro/removeIntro() at flash.utils::Timer/_timerDispatch() at flash.utils::Timer/tick() The addNav function in the Navigation class should expect 0 arguments/variables and I'm not sending any arguments/variables to it, which is why I'm confused as to why it's saying I'm getting 1. My Document Class: public function HomePlayer():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); stage.scaleMode = StageScaleMode.NO_SCALE; stage.align = StageAlign.TOP_LEFT; // Use when Live //videoURL = this.loaderInfo.parameters.theVIDEO; // Get the Video URL from HTML // Remove when video testing ready videoURL = "videos/WhatDifferentiatesUs.flv"; drawNav(); drawIntro(); } private function drawIntro():void { intro = new Intro(); intro.drawIntro(); intro.addEventListener("onComplete", nav.addNav); stage.addChild(intro); } private function drawNav():void { nav = new Navigation(); nav.drawNav(); stage.addChild(nav); } Intro Class: Public function Intro():void { if (stage) init(); else addEventListener(Event.ADDED_TO_STAGE, init); } private function init(e:Event = null):void { removeEventListener(Event.ADDED_TO_STAGE, init); } public function drawIntro():void { introMov = new IntroMov(); introMov.alpha = 0; addChild(introMov); TweenLite.to(introMov, 3, {alpha:1}); // Timer introFader = new Timer(INTRO_DELAY); introFader.addEventListener(TimerEvent.TIMER, fadeIntro); introFader.start(); introRemover = new Timer(INTRO_DELAY); introRemover.addEventListener(TimerEvent.TIMER, removeIntro); } private function fadeIntro(e:TimerEvent):void { if (i < 30){ i++ } else if (i == 30){ TweenLite.to(introMov, 1.5, {alpha:0}); introFader.removeEventListener(TimerEvent.TIMER, fadeIntro); introRemover.start(); } } private function removeIntro(e:TimerEvent):void { if (n < 10){ n++ } else if (n == 10){ introRemover.removeEventListener(TimerEvent.TIMER, removeIntro); removeChild(introMov); trace("removed Intro"); dispatchEvent (new CustomEvent(CustomEvent.COMPLETE, {})); // ? Intro to Navigation } } Navigation Class functions: public function drawNav():void { weAreA = new WeAreA(); weAreA.alpha = 0; weAreA.x = 20; weAreA.y = 35; introText = new IntroText(); introText.alpha = 0; introText.x = 20; introText.y = 124; chooseAVideo = new ChooseAVideo(); chooseAVideo.alpha = 0; chooseAVideo.x = 20; chooseAVideo.y = 336; } public function addNav():void { addChild(weAreA); addChild(introText); addChild(chooseAVideo); TweenLite.to(weAreA, 2, {alpha:1}); TweenLite.to(introText, 3, {alpha:1}); TweenLite.to(introText, 3, {alpha:1}); }

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  • Write to a textfile using Javascript

    - by karikari
    Under Firefox, I want to do something like this : I have a .htm file, that has a button on it. This button, when I click it, the action will write a text inside a local .txt file. By the way, my .htm file is run locally too. I have tried multiple times using this code, but still cant make my .htm file write to my textfile: function save() { try { netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect"); } catch (e) { alert("Permission to save file was denied."); } var file = Components.classes["@mozilla.org/file/local;1"] .createInstance(Components.interfaces.nsILocalFile); file.initWithPath( savefile ); if ( file.exists() == false ) { alert( "Creating file... " ); file.create( Components.interfaces.nsIFile.NORMAL_FILE_TYPE, 420 ); } var outputStream = Components.classes["@mozilla.org/network/file-output-stream;1"] .createInstance( Components.interfaces.nsIFileOutputStream ); outputStream.init( file, 0x04 | 0x08 | 0x20, 420, 0 ); var output = 'test test test test'; var result = outputStream.write( output, output.length ); outputStream.close(); } This part is for the button: <input type="button" value="write to file2" onClick="save();">

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  • problem configure JBoss to work with JNDI

    - by Spiderman
    I am trying to bind connection to the DB using JNDI in my application that runs on JBoss. I did the following: I created the datasource file oracle-ds.xml filled it with the relevant xml elements: <datasources> <local-tx-datasource> <jndi-name>bilby</jndi-name> ... </local-tx-datasource> </datasources> and put it in the folder \server\default\deploy Added the relevant oracle jar file than in my application I performed: JndiObjectFactoryBean factory = new JndiObjectFactoryBean(); factory.setJndiName("bilby"); try{ factory.afterPropertiesSet(); dataSource = factory.getObject(); } catch(NamingException ne) { ne.printStackTrace(); } and this cause the error: javax.naming.NameNotFoundException: bilby not bound then in the output after this error occured I saw the line: 18:37:56,560 INFO [ConnectionFactoryBindingService] Bound ConnectionManager 'jb oss.jca:service=DataSourceBinding,name=bilby' to JNDI name 'java:bilby' So what is my configuration problem? I think that it may be that JBoss first loads and runs the .war file of my application and only then it loads the oracle-ds.xml that contain my data-source definition. The problem is that they are both located in the same folder. Is there a way to define priority of loading them, or maybe this is not the problem at all. Any idea?

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  • When i run rake db:create ,Error rake aborted! uninitialized constant Cucumber

    - by Big Bang Theory
    Hi I am trying to experiment on an open source application application . when i run $ rake db:create Following is the stacktrace rake aborted! uninitialized constant Cucumber /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:443:in `load_missing_constant' /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:80:in `const_missing' /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:92:in `const_missing' /home/BigBangTheory/Desktop/spot-us/lib/tasks/cucumber.rake:13 /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1882:in `in_namespace' /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:910:in `namespace' /home/BigBangTheory/Desktop/spot-us/lib/tasks/cucumber.rake:12 /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:145:in `load_without_new_constant_marking' /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:145:in `load' /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:521:in `new_constants_in' /usr/lib/ruby/gems/1.8/gems/activesupport-2.3.2/lib/active_support/dependencies.rb:145:in `load' /usr/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/tasks/rails.rb:8 /usr/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/tasks/rails.rb:8:in `each' /usr/lib/ruby/gems/1.8/gems/rails-2.3.2/lib/tasks/rails.rb:8 /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' /home/BigBangTheory/Desktop/spot-us/Rakefile:9 /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2383:in `load' /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2383:in `raw_load_rakefile' /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2017:in `load_rakefile' /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling' /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2016:in `load_rakefile' /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2000:in `run' /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in `standard_exception_handling' /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:in `run' /usr/lib/ruby/gems/1.8/gems/rake-0.8.7/bin/rake:31 /usr/bin/rake:19:in `load' /usr/bin/rake:19 Any help ?

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  • Need help running Python app as service in Ubuntu with Upstart

    - by GreeenGuru
    I have written a logging application in Python that is meant to start at boot, but I've been unable to start the app with Ubuntu's Upstart init daemon. When run from the terminal with sudo /usr/local/greeenlog/main.pyw, the application works perfectly. Here is what I've tried for the Upstart job: /etc/init/greeenlog.conf # greeenlog description "I log stuff." start on startup stop on shutdown script exec /usr/local/greeenlog/main.pyw end script My application starts one child thread, in case that is important. I've tried the job with the expect fork stanza without any change in the results. I've also tried this with sudo and without the script statements (just a lone exec statement). In all cases, after boot, running status greeenlog returns greeenlog stop/waiting and running start greeenlog returns: start: Rejected send message, 1 matched rules; type="method_call", sender=":1.61" (uid=1000 pid=2496 comm="start) interface="com.ubuntu.Upstart0_6.Job" member="Start" error name="(unset)" requested_reply=0 destination="com.ubuntu.Upstart" (uid=0 pid=1 comm="/sbin/init")) Can anyone see what I'm doing wrong? I appreciate any help you can give. Thanks.

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  • How to maintain base files for development environment central while allowing people to change their

    - by Ittai
    Hi, what I'd like to do is have files in a central location so that when I add people to my development team they can see the base version of these files but meanwhile have the ability for the rest of the team to work with their own local version. I know I can just put the files in source-control (we use Tortoiese-SVN) and have my team change the local versions but I'd rather not as the exclamation mark signaling the file has been changed and needs to be committed, quite frankly, irritates me greatly. I'll give two examples of what I mean: We use quite a few build.xml files which relate to a single properties files which contains many definitions. Some of them can be different between team-members (mainly temporary working directories) and I'd like a new team-member to have the ability to get the properties file with the base config but change it if they wish. Have the eclipse settings file in the SVN so that when a new team-member joins they can just retrieve the files from the server and have a base system running. If they wish they will be able to change some of these settings. Thanks, Ittai

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  • Webfaction apache + mod_wsgi + django configuration issue

    - by Dmitry Guyvoronsky
    A problem that I stumbled upon recently, and, even though I solved it, I would like to hear your opinion of what correct/simple/adopted solution would be. I'm developing website using Django + python. When I run it on local machine with "python manage.py runserver", local address is http://127.0.0.1:8000/ by default. However, on production server my app has other url, with path - like "http://server.name/myproj/" I need to generate and use permanent urls. If I'm using {% url view params %}, I'm getting paths that are relative to / , since my urls.py contains this urlpatterns = patterns('', (r'^(\d+)?$', 'myproj.myapp.views.index'), (r'^img/(.*)$', 'django.views.static.serve', {'document_root': settings.MEDIA_ROOT + '/img' }), (r'^css/(.*)$', 'django.views.static.serve', {'document_root': settings.MEDIA_ROOT + '/css' }), ) So far, I see 2 solutions: modify urls.py, include '/myproj/' in case of production run use request.build_absolute_uri() for creating link in views.py or pass some variable with 'hostname:port/path' in templates Are there prettier ways to deal with this problem? Thank you. Update: Well, the problem seems to be not in django, but in webfaction way to configure wsgi. Apache configuration for application with URL "hostname.com/myapp" contains the following line WSGIScriptAlias / /home/dreamiurg/webapps/pinfont/myproject.wsgi So, SCRIPT_NAME is empty, and the only solution I see is to get to mod_python or serve my application from root. Any ideas?

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  • Sharing storage between servers

    - by El Yobo
    I have a PHP based web application which is currently only using one webserver but will shortly be scaling up to another. In most regards this is pretty straightforward, but the application also stores a lot of files on the filesystem. It seems that there are many approaches to sharing the files between the two servers, from the very simple to the reasonably complex. These are the options that I'm aware of Simple network storage NFS SMB/CIFS Clustered filesystems Lustre GFS/GFS2 GlusterFS Hadoop DFS MogileFS What I want is for a file uploaded via one webserver be immediately available if accessed through the other. The data is extremely important and absolutely cannot be lost, so whatever is implemented needs to a) never lose data and b) have very high availability (as good as, or better, than a local filesystem). It seems like the clustered filesystems will also provide faster data access than local storage (for large files) but that isn't of vita importance at the moment. What would you recommend? Do you have any suggestions to add or anything specifically to look out for with the above options? Any suggestions on how to manage backup of data on the clustered filesystems?

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  • Why does adding Crossover to my Genetic Algorithm give me worse results?

    - by MahlerFive
    I have implemented a Genetic Algorithm to solve the Traveling Salesman Problem (TSP). When I use only mutation, I find better solutions than when I add in crossover. I know that normal crossover methods do not work for TSP, so I implemented both the Ordered Crossover and the PMX Crossover methods, and both suffer from bad results. Here are the other parameters I'm using: Mutation: Single Swap Mutation or Inverted Subsequence Mutation (as described by Tiendil here) with mutation rates tested between 1% and 25%. Selection: Roulette Wheel Selection Fitness function: 1 / distance of tour Population size: Tested 100, 200, 500, I also run the GA 5 times so that I have a variety of starting populations. Stop Condition: 2500 generations With the same dataset of 26 points, I usually get results of about 500-600 distance using purely mutation with high mutation rates. When adding crossover my results are usually in the 800 distance range. The other confusing thing is that I have also implemented a very simple Hill-Climbing algorithm to solve the problem and when I run that 1000 times (faster than running the GA 5 times) I get results around 410-450 distance, and I would expect to get better results using a GA. Any ideas as to why my GA performing worse when I add crossover? And why is it performing much worse than a simple Hill-Climb algorithm which should get stuck on local maxima as it has no way of exploring once it finds a local max?

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  • PHP: Profiling code and strict environment ~ Improving my coding

    - by DavidYell
    I would like to update my local working environment to be stricter in an effort to improve my code. I know that my code is okay, but as with most things there is always room for improvement. I use XAMPP on my local machine, for simplicities sake Apache Friends XAMPP (Basic Package) version 1.7.2 So I've updated my php.ini : error_reporting to be E_ALL | E_STRICT to help with the code standard. I've also enabled the XDebug extension zend_extension = "C:\xampp\php\ext\php_xdebug.dll" which seems to be working, having tested some broken code and got the nice standard orange error notice. However, having read this question, http://stackoverflow.com/questions/133686/what-is-the-best-way-to-profile-php-code and enabled the profiler, I cannot seem to create a cachegrind file. Many of the guides that I've looked at seem to think you need to install XDebug in XAMPP which leads me to think they are out of date, as XDebug is bundled with XAMPP these days. So I would appreciate it if anyone can help point me in the right direction with both configuring XDebug to output grind files, and or just a great set of default settings for the XDebug config in XAMPP. Seems there is very little documentation to go on. If people have tips on integrating these tools with Netbeans, that would be awesomesauce. I'm happy to get suggestions on other things that I can do to help tighten up my php code, both syntactically and performance wise Thanks, and apologies for the rambling question(s)! Ninja edit I should menion that I'm using named vhosts as my Apache configuration, which I think is why running XDebug on port 9000 isn't working for me. I guess I'd need to edit my vhost to include port 9000

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  • Calculating IOPS for a single HDD - what am I doing wrong?

    - by red888
    So I know there is no standardized way of calculating IOPS for a HDD, but from everything I have read it appears one of the most accurate formulas is the following: IOP/ms = + {rotational latency} + ({block size} / {data transfer rate}) Which is IOs per millisecond or what the book I've been reading calls "Disk Service Time". Also rotational latency is calculated as half of one rotation in milliseconds. This was taken from the EMC book "Information Storage and Management" -arguably a pretty reliable source right\wrong? Putting this formula into practice consider this Seagate data sheet. I am going to calculate IOPS for the ST3000DM001 model for a block size of 4kb: Seek Average (Write) = 9.5 -I'll measuring IOPS for writes Spindle speed = 7200rpm Average Data Rate = 156MB/s So my variables are: Seek Time = 9.5ms Rotational latency = (.5 / (7200rpm / 60)) = 0.004s = 4ms Data Rate = 156MB/s = (0.156MB/ms / 0.004MB) = 39 9.5ms + 4ms + 39 = IO/ms 52.5 1 / (52.5 * 0.001) = 19 IOPS 19 IOPS for this drive clearly is not right so what am I doing wrong?

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  • form submitting with mechanize and Python

    - by MATELIN Alexis
    I'm trying to scrap a website that requires to submit two forms : a first one to loggin and a second one to specify my research. I'm using Python and the mechanize package. No problem with the first one, but i just can't figure out how to pass through the second one. Here is the part of my code related to the firm above-mentionned agemin=18 agemax=25 by='region' country='France' region=2 newcustomers=1 browser.select_form(nr=0) browser['age[min]']=agemin browser['age[max]']=agemax browser['country']=country browser['region']=region browser['by']=by browser['new-customers']=newcustomers response=browser.submit() content=response.read() but when I submit the variable 'age[min]' by example, I get the following error message : TypeError: object of type 'int' has no len() to give you some more informations, here is what I get with 'print br.form' <POST http://www.adopteunmec.com/qsearch/ajax_quick application/x-www-form-urlencoded <SelectControl(age[min]=[, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, *30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99])> <SelectControl(age[max]=[, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, *45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99])> <SelectControl(by=[*region, distance])> <SelectControl(country=[*fr, be, ch, ca])> <SelectControl(region=[*1, 2, 3, 4, 5, 6, 7, 8, 22, 23, 9, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 11])> <SelectControl(distance[min]=[*, 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 410, 420, 430, 440, 450, 460, 470, 480, 490, 500, 510, 520, 530, 540, 550, 560, 570, 580, 590, 600, 610, 620, 630, 640, 650, 660, 670, 680, 690, 700, 710, 720, 730, 740, 750, 760, 770, 780, 790, 800, 810, 820, 830, 840, 850, 860, 870, 880, 890, 900, 910, 920, 930, 940, 950, 960, 970, 980, 990, 1000])> <SelectControl(distance[max]=[, 0, 10, 20, 30, 40, 50, 60, 70, *80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 410, 420, 430, 440, 450, 460, 470, 480, 490, 500, 510, 520, 530, 540, 550, 560, 570, 580, 590, 600, 610, 620, 630, 640, 650, 660, 670, 680, 690, 700, 710, 720, 730, 740, 750, 760, 770, 780, 790, 800, 810, 820, 830, 840, 850, 860, 870, 880, 890, 900, 910, 920, 930, 940, 950, 960, 970, 980, 990, 1000])> <CheckboxControl(new=[*1])>> My guess is that the form needs an object (like a list) containing all the variables to accept it ; that's why it refuses the variables submited one by one. Thank you in advance for any help ! Alexis

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  • Can I version dotfiles within a project without merging their history into the main line?

    - by istrasci
    I'm sure this title is fairly obscure. I'm wondering if there is some way in git to tell it that you want a certain file to use different versions of a file when moving between branches, but to overall be .gitignored from the repository. Here's my scenario: I've got a Flash Builder project (for a Flex app) that I control with git. Flex apps in Flash Builder projects create three files: .actionScriptProperties, .flexProperties, and .project. These files contain lots of local file system references (source folders, output folders, etc.), so naturally we .gitignore them from our repo. Today, I wanted to use a new library in my project, so I made a separate git branch called lib, removed the old version of the library and put in the new one. Unfortunately, this Flex library information gets stored in one of those three dot files (not sure which offhand). So when I had to switch back to the first branch (master) earlier, I was getting compile errors because master was now linked to the new library (which basically negated why I made lib in the first place). So I'm wondering if there's any way for me to continue to .gitignore these files (so my other developers don't get them), but tell git that I want it to use some kind of local "branch version" so I can locally use different versions of the files for different branches.

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  • How to parse pipe with multiple commands independently?

    - by yarun can
    How can I parse output of a single command by multiple commands without truncating at each step? For example ls -al|grep -i something will pass every line that has "something" in it to the next pipe which is fine, but that also means every other line in the pipe is discarded since there wont be matching the condition. What I want is to be able to operate on single pipe by many commands independently. In this case it a pipe from Mutt which passes the whole message body. I want to get grep, sed, delete and assign each of these to bash variables maybe. Initially what I want is to be able to assign "message id" to a variable, "subject" to another variable etc Then pass those into proper commands arguments. Here is how it will be MessageBodyFromMutt|grep something -Ax -Bx |grep another thing from the original message| sed some stuff from the original message| cut from here to there Obviously the above line does not do what I want. I want all these commands to operate on the original message body. I hope it makes sense

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