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• PBCS Hyperion Planning in the Cloud PartnerLab 2-Day Training

  - by Mike.Hallett(at)Oracle-BI&EPM

  Normal 0 false false false EN-GB X-NONE X-NONE MicrosoftInternetExplorer4 Objective of the PartnerLab:  To help partners engage the interest and commitment of their clients for Oracle Planning and Budgeting Cloud Service projects. This is your unique opportunity to learn how to expand your business with the PBCS Application. This 2-day PartnerLab workshop will enable your team to understand the fundamental concepts of the PBCS Application, the implications of Oracle Public Cloud deployment, and to effectively present and demonstrate PBCS to prospective clients. Participants must already be competent with the on-premise Hyperion Planning application: this training will build on existing expertise to cover SaaS Cloud specific deployment implications and how best to demonstrate this to clients and win services led PBCS implementation engagements. Register here now and see full Agenda for 07-08 July 2014 in Oracle Paris – Colombes 15, bd Charles de Gaulle, 92715 Colombes Cedex France Register here now and see full Agenda for 15-16 July 2014 in Oracle Italy via Fulvio Testi 136, Cinisello Balsamo, Milan, Italy This training is free of charge to OPN Member Partners This PartnerLab is a 2 day in-class workshop event led by Oracle Pre-Sales subject matter experts. These 2 days consist of discussions, presentations, demonstration and hands-on exercises. Note: the hands-on exercises are in an already installed environment that you can have access to after the event (see more @ Hyperion Demonstration Systems for Partners). The PartnerLab will be delivered in English or local language. Mandatory prerequisites for a participant: Please view material available and complete the assessments before you attend the PartnerLab event. Material and assessments cover foundational information about Oracle Hyperion Planning and Oracle Planning and Budgeting Cloud Service. View material prior to live PartnerLab: Oracle Hyperion Planning 11 Sales Specialist guided learning path Oracle Hyperion Planning 11 PreSales Specialist guided learning path Oracle Hyperion Planning 11 Implementation Specialist guided learning path Oracle Planning and Budgeting Cloud Service Specialist guided learning path PBCS How-to Videos Learn More at Oracle Planning and Budgeting Cloud Service Take and pass these on-line assessments prior to the live PartnerLab training: Oracle Hyperion Planning 11 Sales Specialist on-line exam Oracle Hyperion Planning 11 PreSales Specialist on-line exam /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin-top:0cm; mso-para-margin-right:0cm; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-fareast-language:EN-US;}

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• Web Service Example - Part 3: Asynchronous

  - by Denis T

  In this edition of the ADF Mobile blog we'll tackle part 3 of our Web Service examples.  In this posting we'll take a look at firing the web service asynchronously and then filling in the UI when it completes.  This can be useful when you have data on the device in a local store and want to show that to the user while the application uses lazy loading from a web service to load more data. Getting the sample code: Just click here to download a zip of the entire project.  You can unzip it and load it into JDeveloper and deploy it either to iOS or Android.  Please follow the previous blog posts if you need help getting JDeveloper or ADF Mobile installed.  Note: This is a different workspace than WS-Part2 What's different? In this example, when you click the Search button on the Forecast By Zip option, now it takes you directly to the results page, which is initially blank.  When the web service returns a second or two later the data pops into the UI.  If you go back to the search page and hit Search it will again clear the results and invoke the web service asynchronously.  This isn't really that useful for this particular example but it shows an important technique that can be used for other use cases. How it was done 1)  First we created a new class, ForecastWorker, that implements the Runnable interface.  This is used as our worker class that we create an instance of and pass to a new thread that we create when the Search button is pressed inside the retrieveForecast actionListener handler.  Once the thread is started, the retrieveForecast returns immediately.  2)  The rest of the code that we had previously in the retrieveForecast method has now been moved to the retrieveForecastAsync.  Note that we've also added synchronized specifiers on both these methods so they are protected from re-entrancy. 3)  The run method of the ForecastWorker class then calls the retrieveForecastAsync method.  This executes the web service code that we had previously, but now on a separate thread so the UI is not locked.  If we had already shown data on the screen it would have appeared before this was invoked.  Note that you do not see a loading indicator either because this is on a separate thread and nothing is blocked. 4)  The last but very important aspect of this method is that once we update data in the collections from the data we retrieve from the web service, we call AdfmfJavaUtilities.flushDataChangeEvents().   We need this because as data is updated in the background thread, those data change events are not propagated to the main thread until you explicitly flush them.  As soon as you do this, the UI will get updated if any changes have been queued. Summary of Fundamental Changes In This Application The most fundamental change is that we are invoking and handling our web services in a background thread and updating the UI when the data returns.  This allows an application to provide a better user experience in many cases because data that is already available locally is displayed while lengthy queries or web service calls can be done in the background and the UI updated when they return.  There are many different use cases for background threads and this is just one example of optimizing the user experience and generating a better mobile application. 

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• Broken Views

  - by Ajarn Mark Caldwell

  “SELECT *” isn’t just hazardous to performance, it can actually return blatantly wrong information. There are a number of blog posts and articles out there that actively discourage the use of the SELECT * FROM …syntax.  The two most common explanations that I have seen are: Performance:  The SELECT * syntax will return every column in the table, but frequently you really only need a few of the columns, and so by using SELECT * your are retrieving large volumes of data that you don’t need, but the system has to process, marshal across tiers, and so on.  It would be much more efficient to only select the specific columns that you need. Future-proof:  If you are taking other shortcuts in your code, along with using SELECT *, you are setting yourself up for trouble down the road when enhancements are made to the system.  For example, if you use SELECT * to return results from a table into a DataTable in .NET, and then reference columns positionally (e.g. myDataRow[5]) you could end up with bad data if someone happens to add a column into position 3 and skewing all the remaining columns’ ordinal position.  Or if you use INSERT…SELECT * then you will likely run into errors when a new column is added to the source table in any position. And if you use SELECT * in the definition of a view, you will run into a variation of the future-proof problem mentioned above.  One of the guys on my team, Mike Byther, ran across this in a project we were doing, but fortunately he caught it while we were still in development.  I asked him to put together a test to prove that this was related to the use of SELECT * and not some other anomaly.  I’ll walk you through the test script so you can see for yourself what happens. We are going to create a table and two views that are based on that table, one of them uses SELECT * and the other explicitly lists the column names.  The script to create these objects is listed below. IF OBJECT_ID('testtab') IS NOT NULL DROP TABLE testtabgoIF OBJECT_ID('testtab_vw') IS NOT NULL DROP VIEW testtab_vwgo IF OBJECT_ID('testtab_vw_named') IS NOT NULL DROP VIEW testtab_vw_namedgo CREATE TABLE testtab (col1 NVARCHAR(5) null, col2 NVARCHAR(5) null)INSERT INTO testtab(col1, col2)VALUES ('A','B'), ('A','B')GOCREATE VIEW testtab_vw AS SELECT * FROM testtabGOCREATE VIEW testtab_vw_named AS SELECT col1, col2 FROM testtabgo Now, to prove that the two views currently return equivalent results, select from them. SELECT 'star', col1, col2 FROM testtab_vwSELECT 'named', col1, col2 FROM testtab_vw_named OK, so far, so good.  Now, what happens if someone makes a change to the definition of the underlying table, and that change results in a new column being inserted between the two existing columns?  (Side note, I normally prefer to append new columns to the end of the table definition, but some people like to keep their columns alphabetized, and for clarity for later people reviewing the schema, it may make sense to group certain columns together.  Whatever the reason, it sometimes happens, and you need to protect yourself and your code from the repercussions.) DROP TABLE testtabgoCREATE TABLE testtab (col1 NVARCHAR(5) null, col3 NVARCHAR(5) NULL, col2 NVARCHAR(5) null)INSERT INTO testtab(col1, col3, col2)VALUES ('A','C','B'), ('A','C','B')goSELECT 'star', col1, col2 FROM testtab_vwSELECT 'named', col1, col2 FROM testtab_vw_named I would have expected that the view using SELECT * in its definition would essentially pass-through the column name and still retrieve the correct data, but that is not what happens.  When you run our two select statements again, you see that the View that is based on SELECT * actually retrieves the data based on the ordinal position of the columns at the time that the view was created.  Sure, one work-around is to recreate the View, but you can’t really count on other developers to know the dependencies you have built-in, and they won’t necessarily recreate the view when they refactor the table. I am sure that there are reasons and justifications for why Views behave this way, but I find it particularly disturbing that you can have code asking for col2, but actually be receiving data from col3.  By the way, for the record, this entire scenario and accompanying test script apply to SQL Server 2008 R2 with Service Pack 1. So, let the developer beware…know what assumptions are in effect around your code, and keep on discouraging people from using SELECT * syntax in anything but the simplest of ad-hoc queries. And of course, let’s clean up after ourselves.  To eliminate the database objects created during this test, run the following commands. DROP TABLE testtabDROP VIEW testtab_vwDROP VIEW testtab_vw_named

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• Oracle Excellence Award

  - by Hartmut Wiese

  CALL FOR NOMINATIONS 2014 Oracle Excellence Award: Sustainability Innovation Is your organization using an Oracle product to help with a sustainability initiative while reducing costs? Saving energy? Saving gas? Saving paper? For example, you may use Oracle’s Agile Product Lifecycle Management to design more eco-friendly products, Oracle Transportation Management to reduce fleet emissions, Oracle Exadata Database Machine to decrease power and cooling needs while increasing database performance, Oracle Business Intelligence to measure environmental impacts, or one of many other Oracle products. Your organization may be eligible for the 2014 Oracle Excellence Award: Sustainability Innovation. Submit a nomination form located here by Friday June 20 if your company is using any Oracle product to take an environmental lead as well as to reduce costs and improve business efficiencies by using green business practices. These awards will be presented during Oracle OpenWorld 2014 (September 28-October 2) in San Francisco.  Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 About the Award • Winners will be selected from the customer and/or partner nominations. Either a customer, their partner, or Oracle representative can submit the nomination form on behalf of the customer.• There is a nomination form here to discuss your use of Oracle products and how they have helped your sustainability efforts and reduced costs. • Winners will be selected based on the extent of the environmental impact they have had as well as the business efficiencies they have achieved through their combined use of Oracle products. Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 Nomination Eligibility • Your company uses at least one component of Oracle products, whether it's the Oracle database, business applications, Fusion Middleware, or Sun servers/storage. • This solution should be in production or in active development. • Nomination deadline: Friday June 20, 2014. Benefits to Award Winners • Award presented to winners during Oracle OpenWorld by Jeff Henley, Oracle Chairman of the Board • Free Oracle OpenWorld registration pass for each winning customer • 2014 Oracle Excellence Award: Sustainability Innovation award logo for inclusion on your own website &/or press release • Possible placement in Oracle Profit Magazine &/or Oracle Magazine • ‘Enable the Eco-Enterprise’ podcast opportunity See last year's winners here Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 ______________________________________________________________________________________ Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Questions? Send an email to: [email protected] Follow Oracle’s Sustainability Solutions on Twitter, LinkedIn, YouTube, and the Sustainability Matters blog Web page with award details:  http://www.oracle.com/us/products/applications/green/call-for-nominations-185050.html  

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• OpenGL Fast-Object Instancing Error

  - by HJ Media Studios

  I have some code that loops through a set of objects and renders instances of those objects. The list of objects that needs to be rendered is stored as a std::map, where an object of class MeshResource contains the vertices and indices with the actual data, and an object of classMeshRenderer defines the point in space the mesh is to be rendered at. My rendering code is as follows: glDisable(GL_BLEND); glEnable(GL_CULL_FACE); glDepthMask(GL_TRUE); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glEnable(GL_DEPTH_TEST); for (std::map<MeshResource*, std::vector<MeshRenderer*> >::iterator it = renderables.begin(); it != renderables.end(); it++) { it->first->setupBeforeRendering(); cout << "<"; for (unsigned long i =0; i < it->second.size(); i++) { //Pass in an identity matrix to the vertex shader- used here only for debugging purposes; the real code correctly inputs any matrix. uniformizeModelMatrix(Matrix4::IDENTITY); /** * StartHere fix rendering problem. * Ruled out: * Vertex buffers correctly. * Index buffers correctly. * Matrices correct? */ it->first->render(); } it->first->cleanupAfterRendering(); } geometryPassShader->disable(); glDepthMask(GL_FALSE); glDisable(GL_CULL_FACE); glDisable(GL_DEPTH_TEST); The function in MeshResource that handles setting up the uniforms is as follows: void MeshResource::setupBeforeRendering() { glEnableVertexAttribArray(0); glEnableVertexAttribArray(1); glEnableVertexAttribArray(2); glEnableVertexAttribArray(3); glEnableVertexAttribArray(4); glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, iboID); glBindBuffer(GL_ARRAY_BUFFER, vboID); glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), 0); // Vertex position glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (const GLvoid*) 12); // Vertex normal glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), (const GLvoid*) 24); // UV layer 0 glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (const GLvoid*) 32); // Vertex color glVertexAttribPointer(4, 1, GL_UNSIGNED_SHORT, GL_FALSE, sizeof(Vertex), (const GLvoid*) 44); //Material index } The code that renders the object is this: void MeshResource::render() { glDrawElements(GL_TRIANGLES, geometry->numIndices, GL_UNSIGNED_SHORT, 0); } And the code that cleans up is this: void MeshResource::cleanupAfterRendering() { glDisableVertexAttribArray(0); glDisableVertexAttribArray(1); glDisableVertexAttribArray(2); glDisableVertexAttribArray(3); glDisableVertexAttribArray(4); } The end result of this is that I get a black screen, although the end of my rendering pipeline after the rendering code (essentially just drawing axes and lines on the screen) works properly, so I'm fairly sure it's not an issue with the passing of uniforms. If, however, I change the code slightly so that the rendering code calls the setup immediately before rendering, like so: void MeshResource::render() { setupBeforeRendering(); glDrawElements(GL_TRIANGLES, geometry->numIndices, GL_UNSIGNED_SHORT, 0); } The program works as desired. I don't want to have to do this, though, as my aim is to set up vertex, material, etc. data once per object type and then render each instance updating only the transformation information. The uniformizeModelMatrix works as follows: void RenderManager::uniformizeModelMatrix(Matrix4 matrix) { glBindBuffer(GL_UNIFORM_BUFFER, globalMatrixUBOID); glBufferSubData(GL_UNIFORM_BUFFER, 0, sizeof(Matrix4), matrix.ptr()); glBindBuffer(GL_UNIFORM_BUFFER, 0); }

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• DirectX particle system. ConstantBuffer

  - by Liuka

  I'm new in DirectX and I'm making a 2D game. I want to use a particle system to simulate a 3D starfield, so each star has to set its own constant buffer for the vertexshader es. to set it's world matrix. So if i have 500 stars (that move every frame) i need to call 500 times VSsetconstantbuffer, and map/unmap each buffer. with 500 stars i have an average of 220 fps and that's quite good. My bottelneck is Vs/PsSetconstantbuffer. If i dont call this function i have 400 fps(obliviously nothing is display, since i dont set the position of the stars). So is there a method to speed up the render of the particle system?? Ps. I'm using intel integrate graphic (hd 2000-3000). with a nvidia (or amd) gpu will i have the same bottleneck?? If, for example, i dont call setshaderresource i have 10-20 fps more (for 500 objcets), that is not 180.Why does SetConstantBuffer take so long?? LPVOID VSdataPtr = VSmappedResource.pData; memcpy(VSdataPtr, VSdata, CszVSdata); context->Unmap(VertexBuffer, 0); result = context->Map(PixelBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &PSmappedResource); if (FAILED(result)) { outputResult.OutputErrorMessage(TITLE, L"Cannot map the PixelBuffer", &result, OUTPUT_ERROR_FILE); return; } LPVOID PSdataPtr = PSmappedResource.pData; memcpy(PSdataPtr, PSdata, CszPSdata); context->Unmap(PixelBuffer, 0); context->VSSetConstantBuffers(0, 1, &VertexBuffer); context->PSSetConstantBuffers(0, 1, &PixelBuffer); this update and set the buffer. It's part of the render method of a sprite class that contains a the vertex buffer and the texture to apply to the quads(it's a 2d game) too. I have an array of 500 stars (sprite setup with a star texture). Every frame: clear back buffer; draw the array of stars; present the backbuffer; draw also call the function update( which calculate the position of the sprite on screen based on a "camera class") Ok, create a vertex buffer with the vertices of each quads(stars) seems to be good, since the stars don't change their "virtual" position; so.... In a particle system (where particles move) it's better to have all the object in only one vertices array, rather then an array of different sprite/object in order to update all the vertices' position with a single setbuffer call. In this case i have to use a dynamic vertex buffer with the vertices positions like this: verticesForQuad={{ XMFLOAT3((float)halfDImensions.x-1+pos.x, (float)halfDImensions.y-1+pos.y, 1.0f), XMFLOAT2(1.0f, 0.0f) }, { XMFLOAT3((float)halfDImensions.x-1+pos.x, -(float)halfDImensions.y-1+pos.y, 1.0f), XMFLOAT2(1.0f, 1.0f) }, { XMFLOAT3(-(float)halfDImensions.x-1+pos.x, (float)halfDImensions.y-1.pos.y, 1.0f), XMFLOAT2(0.0f, 0.0f) }, { XMFLOAT3(-(float)halfDImensions.x-1.pos.x, -(float)halfDImensions.y-1+pos.y, 1.0f), XMFLOAT2(0.0f, 1.0f) }, ....other quads} where halfDimensions is the halfsize in pixel of a texture and pos the virtual position of a star. than create an array of verticesForQuad and create the vertex buffer ZeroMemory(&vertexDesc, sizeof(vertexDesc)); vertexDesc.Usage = D3D11_USAGE_DEFAULT; vertexDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER; vertexDesc.ByteWidth = sizeof(VertexType)* 4*numStars; ZeroMemory(&resourceData, sizeof(resourceData)); resourceData.pSysMem = verticesForQuad; result = device->CreateBuffer(&vertexDesc, &resourceData, &CvertexBuffer); and call each frame Context->IASetVertexBuffers(0, 1, &CvertexBuffer, &stride, &offset); But if i want to add and remove obj i have to recreate the buffer each time, havent i?? There is a faster way? I think i can create a vertex buffer with a max size (es. 10000 objs) and when i update it set only the 250 position (for 250 onjs for example) and pass this number as the vertexCount to the draw function (numObjs*4), or i'm worng

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• Is this over-abstraction? (And is there a name for it?)

  - by mwhite

  I work on a large Django application that uses CouchDB as a database and couchdbkit for mapping CouchDB documents to objects in Python, similar to Django's default ORM. It has dozens of model classes and a hundred or two CouchDB views. The application allows users to register a "domain", which gives them a unique URL containing the domain name that gives them access to a project whose data has no overlap with the data of other domains. Each document that is part of a domain has its domain property set to that domain's name. As far as relationships between the documents go, all domains are effectively mutually exclusive subsets of the data, except for a few edge cases (some users can be members of more than one domain, and there are some administrative reports that include all domains, etc.). The code is full of explicit references to the domain name, and I'm wondering if it would be worth the added complexity to abstract this out. I'd also like to know if there's a name for the sort of bound property approach I'm taking here. Basically, I have something like this in mind: Before in models.py class User(Document): domain = StringProperty() class Group(Document): domain = StringProperty() name = StringProperty() user_ids = StringListProperty() # method that returns related document set def users(self): return [User.get(id) for id in self.user_ids] # method that queries a couch view optimized for a specific lookup @classmethod def by_name(cls, domain, name): # the view method is provided by couchdbkit and handles # wrapping json CouchDB results as Python objects, and # can take various parameters modifying behavior return cls.view('groups/by_name', key=[domain, name]) # method that creates a related document def get_new_user(self): user = User(domain=self.domain) user.save() self.user_ids.append(user._id) return user in views.py: from models import User, Group # there are tons of views like this, (request, domain, ...) def create_new_user_in_group(request, domain, group_name): group = Group.by_name(domain, group_name)[0] user = User(domain=domain) user.save() group.user_ids.append(user._id) group.save() in group/by_name/map.js: function (doc) { if (doc.doc_type == "Group") { emit([doc.domain, doc.name], null); } } After models.py class DomainDocument(Document): domain = StringProperty() @classmethod def domain_view(cls, *args, **kwargs): kwargs['key'] = [cls.domain.default] + kwargs['key'] return super(DomainDocument, cls).view(*args, **kwargs) @classmethod def get(cls, *args, **kwargs, validate_domain=True): ret = super(DomainDocument, cls).get(*args, **kwargs) if validate_domain and ret.domain != cls.domain.default: raise Exception() return ret def models(self): # a mapping of all models in the application. accessing one returns the equivalent of class BoundUser(User): domain = StringProperty(default=self.domain) class User(DomainDocument): pass class Group(DomainDocument): name = StringProperty() user_ids = StringListProperty() def users(self): return [self.models.User.get(id) for id in self.user_ids] @classmethod def by_name(cls, name): return cls.domain_view('groups/by_name', key=[name]) def get_new_user(self): user = self.models.User() user.save() views.py @domain_view # decorator that sets request.models to the same sort of object that is returned by DomainDocument.models and removes the domain argument from the URL router def create_new_user_in_group(request, group_name): group = request.models.Group.by_name(group_name) user = request.models.User() user.save() group.user_ids.append(user._id) group.save() (Might be better to leave the abstraction leaky here in order to avoid having to deal with a couchapp-style //! include of a wrapper for emit that prepends doc.domain to the key or some other similar solution.) function (doc) { if (doc.doc_type == "Group") { emit([doc.name], null); } } Pros and Cons So what are the pros and cons of this? Pros: DRYer prevents you from creating related documents but forgetting to set the domain. prevents you from accidentally writing a django view - couch view execution path that leads to a security breach doesn't prevent you from accessing underlying self.domain and normal Document.view() method potentially gets rid of the need for a lot of sanity checks verifying whether two documents whose domains we expect to be equal are. Cons: adds some complexity hides what's really happening requires no model modules to have classes with the same name, or you would need to add sub-attributes to self.models for modules. However, requiring project-wide unique class names for models should actually be fine because they correspond to the doc_type property couchdbkit uses to decide which class to instantiate them as, which should be unique. removes explicit dependency documentation (from group.models import Group)

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• Power cycles on/off 3 times before booting properly from cold start, no other issues (New System)

  - by James

  Relevant Specs: Sapphire 5850, core i7 920, Seasonic x750 power supply, ECS X58B-A2 mobo. From a cold boot, meaning all power totally disconnected at the wall, the system will power on for less than a second and then power off completely. After two seconds of being powered off this will repeat and on the third "attempt" the computer will boot. To be very specific here is what happens: The power is turned on at the wall and on the psu, the orange stdby LED on the mobo is illuminated but the system is 'off'. I hit the power button on the case or on the mobo itself I hear the relay (?) in the psu closing The case light comes on and the mobo power light comes on. The fans start rotating. Immediately after this the I hear some relay click - the power lights extinguish, the fans stop, the stdby light remains on. Less than 2 seconds pass and the cycle repeats without any intervention from me. On the third attempt it boots normally and the machine runs perfectly. If I do a soft reboot or a full shutdown the computer starts normally the next time. It's only if I pull the power cord or flick the switch off on the PSU that I get the cycling again. Basically any time the stdby light on the mobo goes out. I have removed the graphics card and I get the same problem. I have removed the PSU, hotwired it to the ON position and verified voltages on all lines. The relay does not cycle when I do this. If I connect only the 24 pin ATX connector to the mobo and not the 8 pin ATX12V / CPU connector then I will not get the cycling, the fans run, the power light stays on, but obviously the system can't boot. Disconnecting all fans has no effect on the problem. My feeling it that it's something to do with the motherboard like a capacitor that's taking a long time to charge because it's leaking or something along those lines. But I can't imagine what could be 'wrong' with it and only manifest itself as a problem under these very specific circumstances. Any ideas? Thanks.

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• Encouter error "Linux ip -6 addr add failed" while setting up OpenVPN client

  - by Mickel

  I am trying to set up my router to use OpenVPN and have gotten quite far (I think), but something seems to be missing and I am not sure what. Here is my configuration for the client: client dev tun proto udp remote ovpn.azirevpn.net 1194 remote-random resolv-retry infinite auth-user-pass /tmp/password.txt nobind persist-key persist-tun ca /tmp/AzireVPN.ca.crt remote-cert-tls server reneg-sec 0 verb 3 OpenVPN client log: Nov 8 15:45:13 rc_service: httpd 15776:notify_rc start_vpnclient1 Nov 8 15:45:14 openvpn[27196]: OpenVPN 2.3.2 arm-unknown-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [MH] [IPv6] built on Nov 1 2013 Nov 8 15:45:14 openvpn[27196]: NOTE: the current --script-security setting may allow this configuration to call user-defined scripts Nov 8 15:45:14 openvpn[27196]: Socket Buffers: R=[116736->131072] S=[116736->131072] Nov 8 15:45:14 openvpn[27202]: UDPv4 link local: [undef] Nov 8 15:45:14 openvpn[27202]: UDPv4 link remote: [AF_INET]178.132.75.14:1194 Nov 8 15:45:14 openvpn[27202]: TLS: Initial packet from [AF_INET]178.132.75.14:1194, sid=44d80db5 8b36adf9 Nov 8 15:45:14 openvpn[27202]: WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this Nov 8 15:45:14 openvpn[27202]: VERIFY OK: depth=1, C=RU, ST=Moscow, L=Moscow, O=Azire Networks, OU=VPN, CN=Azire Networks, name=Azire Networks, [email protected] Nov 8 15:45:14 openvpn[27202]: Validating certificate key usage Nov 8 15:45:14 openvpn[27202]: ++ Certificate has key usage 00a0, expects 00a0 Nov 8 15:45:14 openvpn[27202]: VERIFY KU OK Nov 8 15:45:14 openvpn[27202]: Validating certificate extended key usage Nov 8 15:45:14 openvpn[27202]: ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication Nov 8 15:45:14 openvpn[27202]: VERIFY EKU OK Nov 8 15:45:14 openvpn[27202]: VERIFY OK: depth=0, C=RU, ST=Moscow, L=Moscow, O=AzireVPN, OU=VPN, CN=ovpn, name=ovpn, [email protected] Nov 8 15:45:15 openvpn[27202]: Data Channel Encrypt: Cipher 'BF-CBC' initialized with 128 bit key Nov 8 15:45:15 openvpn[27202]: Data Channel Encrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Nov 8 15:45:15 openvpn[27202]: Data Channel Decrypt: Cipher 'BF-CBC' initialized with 128 bit key Nov 8 15:45:15 openvpn[27202]: Data Channel Decrypt: Using 160 bit message hash 'SHA1' for HMAC authentication Nov 8 15:45:15 openvpn[27202]: Control Channel: TLSv1, cipher TLSv1/SSLv3 DHE-RSA-AES256-SHA, 2048 bit RSA Nov 8 15:45:15 openvpn[27202]: [ovpn] Peer Connection Initiated with [AF_INET]178.132.75.14:1194 Nov 8 15:45:17 openvpn[27202]: SENT CONTROL [ovpn]: 'PUSH_REQUEST' (status=1) Nov 8 15:45:17 openvpn[27202]: PUSH: Received control message: 'PUSH_REPLY,ifconfig-ipv6 2a03:8600:1001:4010::101f/64 2a03:8600:1001:4010::1,route-ipv6 2000::/3 2A03:8600:1001:4010::1,redirect-gateway def1 bypass-dhcp,dhcp-option DNS 194.1.247.30,tun-ipv6,route-gateway 178.132.77.1,topology subnet,ping 3,ping-restart 15,ifconfig 178.132.77.33 255.255.255.192' Nov 8 15:45:17 openvpn[27202]: OPTIONS IMPORT: timers and/or timeouts modified Nov 8 15:45:17 openvpn[27202]: OPTIONS IMPORT: --ifconfig/up options modified Nov 8 15:45:17 openvpn[27202]: OPTIONS IMPORT: route options modified Nov 8 15:45:17 openvpn[27202]: OPTIONS IMPORT: route-related options modified Nov 8 15:45:17 openvpn[27202]: OPTIONS IMPORT: --ip-win32 and/or --dhcp-option options modified Nov 8 15:45:17 openvpn[27202]: TUN/TAP device tun0 opened Nov 8 15:45:17 openvpn[27202]: TUN/TAP TX queue length set to 100 Nov 8 15:45:17 openvpn[27202]: do_ifconfig, tt->ipv6=1, tt->did_ifconfig_ipv6_setup=1 Nov 8 15:45:17 openvpn[27202]: /usr/sbin/ip link set dev tun0 up mtu 1500 Nov 8 15:45:18 openvpn[27202]: /usr/sbin/ip addr add dev tun0 178.132.77.33/26 broadcast 178.132.77.63 Nov 8 15:45:18 openvpn[27202]: /usr/sbin/ip -6 addr add 2a03:8600:1001:4010::101f/64 dev tun0 Nov 8 15:45:18 openvpn[27202]: Linux ip -6 addr add failed: external program exited with error status: 254 Nov 8 15:45:18 openvpn[27202]: Exiting due to fatal error Any ideas are most welcome!

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• Getting hp-snmp-agents on HP ProLiant DL360 on Lenny working

  - by mark

  After receiving our HP ProLiant DL360 I'd like to integrate the machine into our Munin system and thus enable ProLiant specific information to be exposed via SNMP. I'm running Debian Lenny with kernel 2.6.26-2-vserver-amd64 . I've followed http://downloads.linux.hp.com/SDR/getting_started.html and the HP repository has been added to /etc/apt/sources.list.d/HP-ProLiantSupportPack.list . Setting up Lenny SNMP itself is not a problem, I configure it to have a public v1 community string to read all data and it works. I install hp-snmp-agents and run hpsnmpconfig and it adds additional lines to the top of /etc/snmp/snmpd.conf : dlmod cmaX /usr/lib64/libcmaX64.so snmpd gets restarted. Via lsof I can see that libcmaX64 was loaded and is used by snmpd, put I do not get any additional information out of snmp. I use snmpwalk -v 1 -c public ... and I can see many OIDs but I do not see the new ones I'd expect, most notably temperatures, fan speed and such. The OIDs I'm expecting are e.g. 1.3.6.1.4.1.232.6.2.6.8.1.4.1 , this is from the existing munin plugins from http://exchange.munin-monitoring.org/plugins/snmp__hp_temp/version/1 . snmpd[19007]: cmaX: Parsing shared as a type was unsucessful snmpd[19007]: cmaX: listening for subagents on port 25375 snmpd[19007]: cmaX: subMIB 1 handler has disconnected snmpd[19007]: cmaX: subMIB 2 handler has disconnected snmpd[19007]: cmaX: subMIB 3 handler has disconnected snmpd[19007]: cmaX: subMIB 5 handler has disconnected snmpd[19007]: cmaX: subMIB 6 handler has disconnected snmpd[19007]: cmaX: subMIB 8 handler has disconnected snmpd[19007]: cmaX: subMIB 9 handler has disconnected snmpd[19007]: cmaX: sent ColdStarts on ports 25376 to 25393 snmpd[19007]: cmaX: subMIB 10 handler has disconnected snmpd[19007]: cmaX: subMIB 11 handler has disconnected snmpd[19007]: cmaX: subMIB 14 handler has disconnected snmpd[19007]: cmaX: subMIB 15 handler has disconnected snmpd[19007]: cmaX: subMIB 16 handler has disconnected snmpd[19007]: cmaX: subMIB 21 handler has disconnected snmpd[19007]: cmaX: subMIB 22 handler has disconnected snmpd[19007]: cmaX: subMIB 23 handler has disconnected snmpd[19007]: cmaX: subMIB 1 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 2 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 3 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 5 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 6 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 8 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 9 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 10 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 11 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 14 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 15 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 16 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 21 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 22 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 23 will be sent on port 25376 to hp Advanced Server Management_Peer snmpd[19007]: cmaX: subMIB 18 handler has disconnected snmpd[19007]: cmaX: subMIB 18 will be sent on port 25393 to cpqnicd snmpd[19007]: NET-SNMP version 5.4.1 This doesn't look particular bad for me, it's just informational I guess. I've compared the walking OID output with and without the module and there's no difference in the OID served back at all. Are there any other prerequisites I'm missing? I've also noticed that from the time I installed hp-snmp-agents it adds a lot of additional daemons and that my load suddenly jumps to 1. I've uninstalled the package for now. Is this expected behavior?

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• Make Dell's OpenManage 6.2 information available through SNMP

  - by tronda

  I have successfully installed OpenManage on a CentOS 5.4 server and I'm able to use OpenManage through the web interface running on port 1311, but I would like to be able to expose this information through the SNMP server. I don't know SNMP particularly well so the configuration is a result of trial and error. I've tried to follow the description pointed out in the Open Manage Server Administrator User Guide. I've followed the documentation regarding SNMP configuration, but without success. I've created a small snmpd.conf file: com2sec notConfigUser default public group notConfigGroup v1 notConfigUser group notConfigGroup v2c notConfigUser view systemview included .1.3.6.1.2.1.1 view systemview included .1.3.6.1.2.1.25.1.1 access notConfigGroup "" any noauth exact all all none view all included .1 rwcommunity public 10.200.26.50 syslocation "Somewhere" syscontact [email protected] pass .1.3.6.1.4.1.4413.4.1 /usr/bin/ucd5820stat smuxpeer .1.3.6.1.4.1.674.10892.1 When I try to fetch SNMP information by using snmpwalk I get the following output: SNMPv2-MIB::sysDescr.0 = STRING: Linux myserver.test.com 2.6.18-164.15.1.el5 #1 SMP Wed Mar 17 11:30:06 EDT 2010 x86_64 SNMPv2-MIB::sysObjectID.0 = OID: NET-SNMP-MIB::netSnmpAgentOIDs.10 DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (1180389) 3:16:43.89 SNMPv2-MIB::sysContact.0 = STRING: [email protected] SNMPv2-MIB::sysName.0 = STRING: myserver.test.com SNMPv2-MIB::sysLocation.0 = STRING: "Somewhere" SNMPv2-MIB::sysORLastChange.0 = Timeticks: (0) 0:00:00.00 SNMPv2-MIB::sysORID.1 = OID: SNMPv2-MIB::snmpMIB SNMPv2-MIB::sysORID.2 = OID: TCP-MIB::tcpMIB SNMPv2-MIB::sysORID.3 = OID: IP-MIB::ip SNMPv2-MIB::sysORID.4 = OID: UDP-MIB::udpMIB SNMPv2-MIB::sysORID.5 = OID: SNMP-VIEW-BASED-ACM-MIB::vacmBasicGroup SNMPv2-MIB::sysORID.6 = OID: SNMP-FRAMEWORK-MIB::snmpFrameworkMIBCompliance SNMPv2-MIB::sysORID.7 = OID: SNMP-MPD-MIB::snmpMPDCompliance SNMPv2-MIB::sysORID.8 = OID: SNMP-USER-BASED-SM-MIB::usmMIBCompliance SNMPv2-MIB::sysORDescr.1 = STRING: The MIB module for SNMPv2 entities SNMPv2-MIB::sysORDescr.2 = STRING: The MIB module for managing TCP implementations SNMPv2-MIB::sysORDescr.3 = STRING: The MIB module for managing IP and ICMP implementations SNMPv2-MIB::sysORDescr.4 = STRING: The MIB module for managing UDP implementations SNMPv2-MIB::sysORDescr.5 = STRING: View-based Access Control Model for SNMP. SNMPv2-MIB::sysORDescr.6 = STRING: The SNMP Management Architecture MIB. SNMPv2-MIB::sysORDescr.7 = STRING: The MIB for Message Processing and Dispatching. SNMPv2-MIB::sysORDescr.8 = STRING: The management information definitions for the SNMP User-based Security Model. SNMPv2-MIB::sysORUpTime.1 = Timeticks: (0) 0:00:00.00 SNMPv2-MIB::sysORUpTime.2 = Timeticks: (0) 0:00:00.00 SNMPv2-MIB::sysORUpTime.3 = Timeticks: (0) 0:00:00.00 SNMPv2-MIB::sysORUpTime.4 = Timeticks: (0) 0:00:00.00 SNMPv2-MIB::sysORUpTime.5 = Timeticks: (0) 0:00:00.00 SNMPv2-MIB::sysORUpTime.6 = Timeticks: (0) 0:00:00.00 SNMPv2-MIB::sysORUpTime.7 = Timeticks: (0) 0:00:00.00 SNMPv2-MIB::sysORUpTime.8 = Timeticks: (0) 0:00:00.00 I suspect that I should get some DELL specific information when I use the snmpwalk utility. Is there a configuration in snmpd.conf file which is wrong, or do I have to configure on the OpenManage side in order to get the hardware information accessible from SNMP?

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• Useful software for netbook?

  - by Moayad Mardini

  I'm looking for recommendations of good software that are particularly useful for netbooks. Software that run great on small screens and low CPU/RAM requirments. I'll start off with the following : Operating Systems: Ubuntu Netbook Remix. Easy Peasy: A fork of Ubuntu Netbook Remix that was once called UBuntu EEE. It isn't just for eeePCs though. Definitely worth a look if vanilla Netbook Remix isn't cutting it. (MarkM) Damn Small Linux (Source) Windows 7: With trimming the installation or compressing the Windows directory to fit on an 8GB SSD. (Will Eddins) nLite: A utility to install a lightweight version of Windows XP without the unnecessary components (like Media Player, Internet Explorer, Outlook Express, MSN Explorer, Messenger...). Utilites: TouchFreeze: To disable the touch pad while typing (Source) InSSIDer: Not only does it make it easier to find and keep a wireless connection, but it turns a netbook into the perfect mobile tool for troubleshooting wireless networks. (phenry) AltMove: Adds more functionality to your mouse for interacting with windows. (Rob) ASUS Font Resizer Utility and other tools by ASUS, specific to ASUS Eee PC series. Internet: Run FileZilla FTP client for a small screen : You can hide a lot of FileZilla's interface parts in the View menu, even the directory trees. Go into Settings = Interface and move the message log next to the transfer queue, if you haven't hidden them both or you want to see them. Select a theme with 16x16 icons. (Source) IDEs and Text Editors: Best lightweight IDE/Text Editor: A question on Stack Overflow that has many good suggestions of IDEs and general text editors for programmers. What’s a good linux C/C++ IDE for a low-res screen?: IDEs for Linux-powered netbooks. Online tools: Dropbox: Since the Netbook has limited disk space, you would like to use Cloud Apps like Dropbox and Ubuntu One so that you don't run out of space especially if you are on a holiday. Later when you go back to your desktop with big hard disk,you can take out the files from your dropbox repo. (Manish Sinha) Google products: like Docs, Calendar and Reader (aviraldg) Web sites and software lists: Netbookfiles.com: Netbook specific software downloads. Software Apps to Maximise your Netbook Battery Power: Netbooks are known for their portability. Not only are they small and lightweight but with their increased power efficiency, batteries can last much longer than conventional laptops. This also means you no longer have to carry a power adapter with you! Several brands emphasis the longevity of the battery as a strong selling point, and for those people who travel a lot, it sure is. Free Must-Have Netbook Apps: Finding software for netbooks can present challenges due to limited hard drive space, processor power, RAM, and screen real-estate. That doesn't mean you have to do without essential programs. The apps below cover all the bases -- entertainment, productivity, security, and communication -- without compromising on performance or usability. Best of all, they're free! Useful Netbook Software: With short battery lives and small resolution screens Netbooks, unlike many other computers on the market, could so with some specific software for their use. Now, not all of those I’ve found are specifically designed for Netbooks, but all are relevant. And they’re designed for Windows XP. The question is community wiki, so feel free to edit it. Updated, thank you all for suggestions.

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• dhcp-snooping option 82 drops valid dhcp requests on 2610 series Procurve switches

  - by kce

  We are slowly starting to implement dhcp-snooping on our HP ProCurve 2610 series switches, all running the R.11.72 firmware. I'm seeing some strange behavior where dhcp-request or dhcp-renew packets are dropped when originating from "downstream" switches due "untrusted relay information from client". The full error: Received untrusted relay information from client <mac-address> on port <port-number> In more detail we have a 48 port HP2610 (Switch A) and a 24 port HP2610 (Switch B). Switch B is "downstream" of Switch A by virtue of a DSL connection to one of Switch A ports. The dhcp server is connected to Switch A. The relevant bits are as follows: Switch A dhcp-snooping dhcp-snooping authorized-server 192.168.0.254 dhcp-snooping vlan 1 168 interface 25 name "Server" dhcp-snooping trust exit Switch B dhcp-snooping dhcp-snooping authorized-server 192.168.0.254 dhcp-snooping vlan 1 interface Trk1 dhcp-snooping trust exit The switches are set to trust BOTH the port the authorized dhcp server is attached to and its IP address. This is all well and good for the clients attached to Switch A, but the clients attached to Switch B get denied due to the "untrusted relay information" error. This is odd for a few reasons 1) dhcp-relay is not configured on either switch, 2) the Layer-3 network here is flat, same subnet. DHCP packets should not have a modified option 82 attribute. dhcp-relay does appear to be enabled by default however: SWITCH A# show dhcp-relay DHCP Relay Agent : Enabled Option 82 : Disabled Response validation : Disabled Option 82 handle policy : append Remote ID : mac Client Requests Server Responses Valid Dropped Valid Dropped ---------- ---------- ---------- ---------- 0 0 0 0 SWITCH B# show dhcp-relay DHCP Relay Agent : Enabled Option 82 : Disabled Response validation : Disabled Option 82 handle policy : append Remote ID : mac Client Requests Server Responses Valid Dropped Valid Dropped ---------- ---------- ---------- ---------- 40156 0 0 0 And interestingly enough the dhcp-relay agent seems very busy on Switch B, but why? As far as I can tell there is no reason why dhcp requests need a relay with this topology. And furthermore I can't tell why the upstream switch is dropping legitimate dhcp requests for untrusted relay information when the relay agent in question (on Switch B) isn't modifying the option 82 attributes anyway. Adding the no dhcp-snooping option 82 on Switch A allows the dhcp traffic from Switch B to be approved by Switch A, by virtue of just turning off that feature. What are the repercussions of not validating option 82 modified dhcp traffic? If I disable option 82 on all my "upstream" switches - will they pass dhcp traffic from any downstream switch regardless of that traffic's legitimacy? This behavior is client operating system agnostic. I see it with both Windows and Linux clients. Our DHCP servers are either Windows Server 2003 or Windows Server 2008 R2 machines. I see this behavior regardless of the DHCP servers' operating system. Can anyone shed some light on what's happening here and give me some recommendations on how I should proceed with configuring the option 82 setting? I feel like i just haven't completely grokked dhcp-relaying and option 82 attributes.

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• free open-source linux screenshot & ocr tool

  - by Gryllida

  I'm looking for a tool which would be able to capture a screen region, pass it to OCR and put the result into clipboard. "import ppm:- | gocr -i - | xclip -selection c" works, but gocr is unreliable: simple text on a webpage has errors. It is a clear font but the OCR tool always misses "r" and replaces it with underscore. "import ppm:- | ocrad -i - | xclip -selection c" says "ocrad: maxval 255 in ppm "P6" file." tesseract needs an image file and does not accept piping input to it. xfce4-screenshooter does not do OCR. ABBYY Screenshot Reader is proprietary. tessnet2 is freeware running on a proprietary platform. Google Docs can OCR screenshots in a batch. But my data is confidential and better not put online. Graphical interface solutions would be acceptable for this question, too. There is a number of existing SuperUser questions about OCR. They fall in several categories. Questions just about OCR without the "screenshot taking" part. Open Source OCR for linux Free OCR for Arabic text Looking for recommendations on OCR problem - tabular numeric data Which has better OCR applications: Ubuntu, or Mac/iPad, or Windows? How can I preform OCR from the command line? OCR solution on linux machine from command line (duplicate) Free OCR software OCR for Sanskrit ( OR devanagari) Copy image and paste to OCR (windows) File processing OCR instead of screenshot. Online OCR website for processing an entire pdf file at one time? Practical OCR solution for converting a large book to a digital format? How to extract text with OCR from a PDF on Linux? Batch-OCR many PDFs OCR Image based PDF Copy image and paste to OCR Extract OCR text from Evernote OCR in Word 2013 Replace (OCR) garbled text in PDF? Process files prior to running OCR. How can I make OCR recognize my documents' text better? Tesseract OCR recognition bilingual document. mistakes tolerance level setup OCR for low quality images How do I get the best quality screenshot for OCR (Optical Character Recognition) and what tool would be the best for screenshots? OCR training. Training Tesseract-OCR for english language fonts None of them answer this question.

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• What free space thresholds/limits are advisable for 640 GB and 2 TB hard disk drives with ZEVO ZFS on OS X?

  - by Graham Perrin

  Assuming that free space advice for ZEVO will not differ from advice for other modern implementations of ZFS … Question Please, what percentages or amounts of free space are advisable for hard disk drives of the following sizes? 640 GB 2 TB Thoughts A standard answer for modern implementations of ZFS might be "no more than 96 percent full". However if apply that to (say) a single-disk 640 GB dataset where some of the files most commonly used (by VirtualBox) are larger than 15 GB each, then I guess that blocks for those files will become sub optimally spread across the platters with around 26 GB free. I read that in most cases, fragmentation and defragmentation should not be a concern with ZFS. Sill, I like the mental picture of most fragments of a large .vdi in reasonably close proximity to each other. (Do features of ZFS make that wish for proximity too old-fashioned?) Side note: there might arise the question of how to optimise performance after a threshold is 'broken'. If it arises, I'll keep it separate. Background On a 640 GB StoreJet Transcend (product ID 0x2329) in the past I probably went beyond an advisable threshold. Currently the largest file is around 17 GB –  – and I doubt that any .vdi or other file on this disk will grow beyond 40 GB. (Ignore the purple masses, those are bundles of 8 MB band files.) Without HFS Plus: the thresholds of twenty, ten and five percent that I associate with Mobile Time Machine file system need not apply. I currently use ZEVO Community Edition 1.1.1 with Mountain Lion, OS X 10.8.2, but I'd like answers to be not too version-specific. References, chronological order ZFS Block Allocation (Jeff Bonwick's Blog) (2006-11-04) Space Maps (Jeff Bonwick's Blog) (2007-09-13) Doubling Exchange Performance (Bizarre ! Vous avez dit Bizarre ?) (2010-03-11) … So to solve this problem, what went in 2010/Q1 software release is multifold. The most important thing is: we increased the threshold at which we switched from 'first fit' (go fast) to 'best fit' (pack tight) from 70% full to 96% full. With TB drives, each slab is at least 5GB and 4% is still 200MB plenty of space and no need to do anything radical before that. This gave us the biggest bang. Second, instead of trying to reuse the same primary slabs until it failed an allocation we decided to stop giving the primary slab this preferential threatment as soon as the biggest allocation that could be satisfied by a slab was down to 128K (metaslab_df_alloc_threshold). At that point we were ready to switch to another slab that had more free space. We also decided to reduce the SMO bonus. Before, a slab that was 50% empty was preferred over slabs that had never been used. In order to foster more write aggregation, we reduced the threshold to 33% empty. This means that a random write workload now spread to more slabs where each one will have larger amount of free space leading to more write aggregation. Finally we also saw that slab loading was contributing to lower performance and implemented a slab prefetch mechanism to reduce down time associated with that operation. The conjunction of all these changes lead to 50% improved OLTP and 70% reduced variability from run to run … OLTP Improvements in Sun Storage 7000 2010.Q1 (Performance Profiles) (2010-03-11) Alasdair on Everything » ZFS runs really slowly when free disk usage goes above 80% (2010-07-18) where commentary includes: … OpenSolaris has changed this in onnv revision 11146 … [CFT] Improved ZFS metaslab code (faster write speed) (2010-08-22)

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• Disk is spinning down each minute, unable to disable it

  - by lzap

  I played with spindown and APM settings of my Samsung discs and now they spin down every minute. I want to disable it, but it seems it does not accept any of the spindown time or APM values. Nothing works, it's all the same. Please help what values should be proper for it. I do not want it to spin down at all. /dev/sda: ATA device, with non-removable media Model Number: SAMSUNG HD154UI Serial Number: S1Y6J1KZ206527 Firmware Revision: 1AG01118 Standards: Used: ATA-8-ACS revision 3b Supported: 7 6 5 4 Configuration: Logical max current cylinders 16383 16383 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 16514064 LBA user addressable sectors: 268435455 LBA48 user addressable sectors: 2930277168 Logical/Physical Sector size: 512 bytes device size with M = 1024*1024: 1430799 MBytes device size with M = 1000*1000: 1500301 MBytes (1500 GB) cache/buffer size = unknown Capabilities: LBA, IORDY(can be disabled) Queue depth: 32 Standby timer values: spec'd by Standard, no device specific minimum R/W multiple sector transfer: Max = 16 Current = 16 Advanced power management level: 60 Recommended acoustic management value: 254, current value: 0 DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6 udma7 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: * SMART feature set Security Mode feature set * Power Management feature set * Write cache * Look-ahead * Host Protected Area feature set * WRITE_BUFFER command * READ_BUFFER command * NOP cmd * DOWNLOAD_MICROCODE * Advanced Power Management feature set Power-Up In Standby feature set * SET_FEATURES required to spinup after power up SET_MAX security extension Automatic Acoustic Management feature set * 48-bit Address feature set * Device Configuration Overlay feature set * Mandatory FLUSH_CACHE * FLUSH_CACHE_EXT * SMART error logging * SMART self-test Media Card Pass-Through * General Purpose Logging feature set * 64-bit World wide name * WRITE_UNCORRECTABLE_EXT command * {READ,WRITE}_DMA_EXT_GPL commands * Segmented DOWNLOAD_MICROCODE * Gen1 signaling speed (1.5Gb/s) * Gen2 signaling speed (3.0Gb/s) * Native Command Queueing (NCQ) * Host-initiated interface power management * Phy event counters * NCQ priority information DMA Setup Auto-Activate optimization Device-initiated interface power management * Software settings preservation * SMART Command Transport (SCT) feature set * SCT Long Sector Access (AC1) * SCT LBA Segment Access (AC2) * SCT Error Recovery Control (AC3) * SCT Features Control (AC4) * SCT Data Tables (AC5) Security: Master password revision code = 65534 supported not enabled not locked frozen not expired: security count supported: enhanced erase 326min for SECURITY ERASE UNIT. 326min for ENHANCED SECURITY ERASE UNIT. Logical Unit WWN Device Identifier: 50024e900300cca3 NAA : 5 IEEE OUI : 0024e9 Unique ID : 00300cca3 Checksum: correct I have the very same disc which I did not "tuned" and it does not spin. But I do not know where to read the settings from. The hdparm only shows this: Advanced power management level: 60 Recommended acoustic management value: 254, current value: 0 Edit: It seems the issue was tuned daemon in RHEL6. It was too aggressive, I turned off disc tuning and it seems they are no longer spinning down.

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• Sendmail - Multiple Domains, One Box - Blocking One Or Two Domains

  - by TangoOversway

  I have a number of domains hosted at a web hosting service. They use sendmail to handle incoming email. I have six domains on this service (which we can call aaa.com, bbb.com and so on). Each email account has the same name and one email box. In other words, [email protected], [email protected], [email protected] and all the others go into one box, /var/spool/mail/tango, where my email program on my desktop picks it up. I have done very little work in sendmail. I haven't had to, and I've been warned it's a steep learning curve. But now I'm running into an issue. I was in a business situation where, for years, my email address was on the website for aaa.com. (We won't go into why this was necessary - it wasn't my preference and it's in the past.) Now I'm using [email protected] instead of [email protected]. I was getting about 1,000 or more pieces of spam a day, but SpamAssassin and my own email program caught about 75% of that. (Which still left stuff to delete.) Now, after checking, I see that 90% or more goes to [email protected], the one that was on the web for years. I'd like to deactivate [email protected] and possibly [email protected] and [email protected], but want to keep using [email protected]. Remember, email to tango at any of these domains will go into one email box. I've had people tell me that sendmail can be configured so I can deactivate [email protected] (and other domains) and still use [email protected] (and others, if I want to). In other words, I can configure sendmail to use this account on some domains and not others. One of the people who was teling me this was in tech support at the hosting service. But I wrote to tech support with a work order to do this and now I'm told it can't be done. I can modify config files myself on this account if needed, but I was hoping to just let them do it. (I love delegation -- it means I spend more time doing my stuff.) Is it possible to keep an email account active on one domain and not others with sendmail, when all domains are hosted on the same server? Is there a name for this process or setting? Any information would be helpful - either pointers to instructions so I can do it, or enough info so I can tell tech support, "This is where to look, and it can be done, so please pass my request on to someone who works with sendmail and knows how to do it." Is this something sendmail can do?

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• DPM 2010 PowerShell Script to Easily Restore Multiple Files

  - by bmccleary

  I’ve got what I thought would be a simple task with Data Protection Manager 2010 that is turning out to be quite frustrating. I have a file server on one server and it is the only server in a protection group. This file server is the repository for a document management application which stores the files according to the data within a SQL database. Sometimes users inadvertently delete files from within our application and we need to restore them. We have all the information needed to restore the files to include the file name, the folder that the file was stored in and the exact date that the file was deleted. It is easy for me to restore the file from within the DPM console since we have a recovery point created every day, I simply go to the day before the delete, browse to the proper folder and restore the file. The problem is that using the DPM console, the cumbersome wizard requires about 20 mouse clicks to restore a single file and it takes 2-4 minutes to get through all the windows. This becomes very irritating when a client needs 100’s of files restored… it takes all day of redundant mouse clicks to restore the files. Therefore, I want to use a PowerShell script (and I’m a novice at PowerShell) to automate this process. I want to be able to create a script that I pass in a file name, a folder, a recovery point date (and a protection group/server name if needed) and simply have the file restored back to its original location with some sort of success/failure notification. I thought it was a simple basic task of a backup solution, but I am having a heck of a time finding the right code. I have seen the sample code at http://social.technet.microsoft.com/wiki/contents/articles/how-to-use-a-windows-powershell-script-to-recover-an-item-in-data-protection-manager.aspx that I have tried to follow, but it doesn’t accomplish what I really want to do (it’s too simplistic) and there are errors in the sample code. Therefore, I would like to get some help writing a script to restore these files. An example of the known values to restore the data are: DPM Server: BACKUP01 Protection Group: Document Repository Data Protected Server: FILER01 File Path: R:\DocumentRepository\ToBackup\ClientName\Repository\2010\07\24\filename.pdf Date Deleted: 8/2/2010 (last recovery point = 8/1/2010) Bonus Points: If you can help me not only create this script, but also show me how to automate by providing a text file with the above information that the PowerShell script loops through, or even better, is able to query our SQL server for the needed data, then I would be more than willing to pay for this development.

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• Can't get Passwordless (SSH provided) SFTP working

  - by Shoaibi

  I have chrooted sftp setup as below. # Package generated configuration file # See the sshd_config(5) manpage for details # What ports, IPs and protocols we listen for Port 22 # Use these options to restrict which interfaces/protocols sshd will bind to #ListenAddress :: #ListenAddress 0.0.0.0 Protocol 2 # HostKeys for protocol version 2 HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_dsa_key #Privilege Separation is turned on for security UsePrivilegeSeparation yes # Lifetime and size of ephemeral version 1 server key KeyRegenerationInterval 3600 ServerKeyBits 768 # Logging SyslogFacility AUTH LogLevel INFO # Authentication: LoginGraceTime 120 PermitRootLogin without-password StrictModes yes AllowGroups admins clients RSAAuthentication yes PubkeyAuthentication yes #AuthorizedKeysFile %h/.ssh/authorized_keys # Don't read the user's ~/.rhosts and ~/.shosts files IgnoreRhosts yes # For this to work you will also need host keys in /etc/ssh_known_hosts RhostsRSAAuthentication no # similar for protocol version 2 HostbasedAuthentication no # Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication #IgnoreUserKnownHosts yes # To enable empty passwords, change to yes (NOT RECOMMENDED) PermitEmptyPasswords no # Change to yes to enable challenge-response passwords (beware issues with # some PAM modules and threads) ChallengeResponseAuthentication no # Change to no to disable tunnelled clear text passwords #PasswordAuthentication yes # Kerberos options #KerberosAuthentication no #KerberosGetAFSToken no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes X11Forwarding yes X11DisplayOffset 10 PrintMotd no PrintLastLog yes TCPKeepAlive yes #UseLogin no #MaxStartups 10:30:60 #Banner /etc/issue.net # Allow client to pass locale environment variables AcceptEnv LANG LC_* #Subsystem sftp /usr/lib/openssh/sftp-server # Set this to 'yes' to enable PAM authentication, account processing, # and session processing. If this is enabled, PAM authentication will # be allowed through the ChallengeResponseAuthentication and # PasswordAuthentication. Depending on your PAM configuration, # PAM authentication via ChallengeResponseAuthentication may bypass # the setting of "PermitRootLogin without-password". # If you just want the PAM account and session checks to run without # PAM authentication, then enable this but set PasswordAuthentication # and ChallengeResponseAuthentication to 'no'. UsePAM yes Subsystem sftp internal-sftp Match group clients ChrootDirectory /var/chroot-home X11Forwarding no AllowTcpForwarding no ForceCommand internal-sftp a dummy user root:~# tail -n1 /etc/passwd david:x:1000:1001::/david:/bin/sh Now in this case david can sftp using say filezilla client and he is chrooted to /var/chroot-home/david/. But what if i was to setup a passwordless auth? I have tried pasting his key in /var/chroot-home/david/.ssh/authorized_keys but no use, tried ssh'ing as david to the box and it just stops at "debug1: Sending env LC_CTYPE = C" after i supply it password and there is nothing shown in auth.log, may be because it can't find the homedir. If i do "su - david" as root i see "No directory, logging in with HOME=/" which makes sense. Symlink doesn't help either. I have also tried with: Match group clients ChrootDirectory /var/chroot-home/%u X11Forwarding no AllowTcpForwarding no ForceCommand internal-sftp a dummy user root:~# tail -n1 /etc/passwd david:x:1000:1001::/var/chroot-home/david:/bin/sh This way if i don't change /var/chroot-home/david to root:root sshd complains about bad ownership or permission modes, and if i do, david can no longer upload/delete anything directly in his home while using sftp from filezilla.

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• Directory listing through FTPS (TLS) is not working

  - by Aron Rotteveel

  We recently switched our server to require TLS for every connection. This is working flawlessly so far, but one of our clients is having problems. Some facts: Server uses Pure-FTPD Server has a passive port range configured Server has no firewall limitations regarding the FTP Client uses WS FTP Client is behind a router Client connects to the same IP as every other, using PASSIVE mode All other clients have no trouble connecting Because of the TLS requirement, connecting using ACTIVE mode is almost not possible, but PASSIVE is working fine for everyone except this specific client. It seems that he is able to connect, but once a LIST command is performed, things go wrong. Log: Finding Host <clienthost> ... Connecting to <serverip:21> Connected to <serverip:21> in 0.020000 seconds, Waiting for Server Response Initializing SSL Session ... 220---------- Welcome to Pure-FTPd [privsep] [TLS] ---------- 220-You are user number 5 of 50 allowed. 220-Local time is now 22:14. Server port: 21. 220-This is a private system - No anonymous login 220-IPv6 connections are also welcome on this server. 220 You will be disconnected after 15 minutes of inactivity. AUTH TLS 234 AUTH TLS OK. SSL session NOT set for reuse SSL Session Started. Host type (1): Automatic Detect USER <user> 331 User <user> OK. Password required PASS (hidden) 230-User <user> has group access to: <user> 230 OK. Current restricted directory is / SYST 215 UNIX Type: L8 Host type (2): Unix (Standard) PBSZ 0 200 PBSZ=0 PROT P 200 Data protection level set to "private" PWD 257 "/" is your current location CWD /public_html 250 OK. Current directory is /public_html PWD257 "/public_html" is your current location TYPE A 200 TYPE is now ASCII PASV 227 Entering Passive Mode (<serverip>,132,100) connecting data channel to <serverip>:132,100(33892) Substituting connection address <serverip> for private address <serverip> from PASV Using external address <customer ext. ip> instead of local address <customer int. ip> for PORT command PORT 82,161,56,225,195,181 200 PORT command successful LIST Error reading response from server. It appears that the connection is dead. Attempting reconnect... Any help is appreciated.

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• creating a heirarchy of terminals or workspaces

  - by intuited

  <rant This question occurred to me ('occurred' meaning 'whispered seductively in my ear for the 100th time') while using GNU-screen, so I'll make that my example. However this is a much more general question about user interfaces and what I perceive as a flawmissing feature in every implementation I've yet seen. I'm wondering if there is some way to create a heirarchy/tree of terminals in a screen session. EG I'd like to have something like 1 bash 1.1 bash 1.2 bash 2 bash 3 bash 3.1 bash 3.1.1 bash 3.1.2 bash It would be good if the terminals could be labelled instead of having to be navigated to via some arrangement that I suspect doesn't exist. So then you could jump to one using eg ^A:goto happydays or ^A:goto dykstra.angry. So to generalize that: Firefox, Chrome, Internet Explorer, gnome-terminal, roxterm, konsole, yakuake, OpenOffice, Microsoft Office, Mr. Snuffaluppagus's Funtime Carousel™, and Your Mom's Jam Browser™ all offer the ability to create a flat set of tabs containing documents of an identical nature: web pages, terminals, documents, fun rideable animals, and jams. GNU-screen implements the same functionality without using tabs. Linux and OS/X window managers provide the ability to organize windows into an array of workspaces, which amounts to again, the same deal. Over the past few years, this has become a more or less ubiquitous concept which has been righteously welcomed into the far reaches of the computer interface funfest. Heavy users of these systems quickly encounter a problem with it: the set of entities is flat. In the case of workspaces, an option may be available to create a 2d array. However none of these applications furnish their users with the ability to create heirarchies, similar to filesystem directory structures, containing instances of their particular contained type. I for one am consistently bothered by this, and am wondering if the community can offer some wisdom as to why this has not happened in any of the foremost collections of computational functionality our culture has yet produced. Or if perhaps it has and I'm just an ignorant savage. I'd like to be able to not only group things into a tree structure, but also to create references (aka symbolic links, aka pointers) from one part of the structure to another, as well as apply properties (eg default directory, colorscheme, ...) recursively downward from a given node. I see no reason why we shouldn't be able to save these structures as known sessions, and apply tags to particular instances. So then you can sort through them by tag, find them by name, or just use the arrow keys (with an appropriate modifier) to move left or right and in or out of a given level. Another key combo would serve to create a branch in the place of the current terminal/webpage/lifelike statue/spreadsheet/spreadsheet sheet/presentation/jam and move that entity into the new branch, then create a fresh one as a sibling to it: a second leaf node within the same branch node. They would get along well. I find it a bit astonishing that this hasn't happened yet, and the only reason I can venture as a guess is that the creators of these fine systems do not consider such functionality to be useful to a significant portion of their userbase. I posit that the probability that that such an assumption would be correct is pretty low. On the other hand, given the relative ease with which such structures can be implemented using modern libraries/languages, it doesn't seem likely that difficulty of implementation would be a major roadblock. If it could be done in 1972 or whenever within the constraints of a filesystem driver, it should be relatively painless to implement in 2010 in a fullblown application. Given that all of these systems are capable of maintaining a set of equivalent entities, it seems unlikely that a major infrastructure overhaul would be necessary in order to enable a navigable heirarchy of them. </rant Mostly I'm just looking to start up a discussion and/or brainstorming on this topic. Any ideas, examples, criticism, or analysis are quite welcome. * Mr. Snuffaluppagus's Funtime Carousel is a registered trademark of Children's Television Workshop Inc. * Your Mom's Jam Browser is a registered trademark of Your Mom Inc.

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• getfacl command and Linux file permissions - getting 403 error when accessing Wordpress

  - by tommytwoeyes

  I'm configuring Wordpress for a friend, and I just screwed up the Wordpress directory permissions (I suspect) using setfacl. Webfaction doesn't allow sudo or allow me to change the directory group ownership using chown. Now it appears that something I did is causing the entire application to give me 403 errors when I try to access it. The current directory listing looks like this (I set the whole thing to 777 temporarily to try to recover access to it): drwxrwsr-x+ 6 myusername myusername 4096 Mar 2 07:07 ./ drwxr-xr-x 3 root root 4096 Feb 25 19:48 ../ -rwxrwxr-x+ 1 myusername myusername 286 Mar 2 06:33 gzip.php -rwxrwxr-x+ 1 myusername myusername 4831 Mar 4 20:02 .htaccess -rwxrwxr-x+ 1 myusername myusername 397 Feb 25 19:49 index.php -rw-rw-r--+ 1 myusername myusername 15606 Feb 25 19:49 license.txt -rw-rw-r--+ 1 myusername myusername 9200 Feb 25 19:49 readme.html drwxrwsr-x+ 6 myusername myusername 4096 Feb 25 19:49 .svn/ -rwxrwxr-x+ 1 myusername myusername 4337 Feb 25 19:49 wp-activate.php drwxr-xr-x+ 10 myusername myusername 4096 Mar 4 20:03 wp-admin/ -rwxrwxr-x+ 1 myusername myusername 40283 Feb 25 19:49 wp-app.php -rwxrwxr-x+ 1 myusername myusername 226 Feb 25 19:49 wp-atom.php -rwxrwxr-x+ 1 myusername myusername 274 Feb 25 19:49 wp-blog-header.php -rwxrwxr-x+ 1 myusername myusername 3931 Feb 25 19:49 wp-comments-post.php -rwxrwxr-x+ 1 myusername myusername 244 Feb 25 19:49 wp-commentsrss2.php -rwxrwxr-x+ 1 myusername myusername 3485 Feb 25 20:15 wp-config.php drwxr-xr-x+ 6 myusername myusername 4096 Feb 26 08:52 wp-content/ -rwxrwxr-x+ 1 myusername myusername 1255 Feb 25 19:49 wp-cron.php -rwxrwxr-x+ 1 myusername myusername 246 Feb 25 19:49 wp-feed.php drwxrwxr-x+ 9 myusername myusername 4096 Feb 25 19:49 wp-includes/ -rwxrwxr-x+ 1 myusername myusername 1997 Feb 25 19:49 wp-links-opml.php -rwxrwxr-x+ 1 myusername myusername 2453 Feb 25 19:49 wp-load.php -rwxrwxr-x+ 1 myusername myusername 27787 Feb 25 19:49 wp-login.php -rwxrwxr-x+ 1 myusername myusername 7774 Feb 25 19:49 wp-mail.php -rwxrwxr-x+ 1 myusername myusername 494 Feb 25 19:49 wp-pass.php -rwxrwxr-x+ 1 myusername myusername 224 Feb 25 19:49 wp-rdf.php -rwxrwxr-x+ 1 myusername myusername 334 Feb 25 19:49 wp-register.php -rwxrwxr-x+ 1 myusername myusername 226 Feb 25 19:49 wp-rss2.php -rwxrwxr-x+ 1 myusername myusername 224 Feb 25 19:49 wp-rss.php -rwxrwxr-x+ 1 myusername myusername 9655 Feb 25 19:49 wp-settings.php -rwxrwxr-x+ 1 myusername myusername 18644 Feb 25 19:49 wp-signup.php -rwxrwxr-x+ 1 myusername myusername 3702 Feb 25 19:49 wp-trackback.php -rwxrwxr-x+ 1 myusername myusername 3210 Feb 25 19:49 xmlrpc.php The getfacl output looks like this: # file: . # owner: myusername # group: myusername user::rwx group::r-x group:apache:rw- mask::rwx other::r-x I simply wanted to change the ownership to myusername:apache and the file permissions to 755. I have no idea how to fix the permissions now. Any help would be really appreciated! Thanks, Tom

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• Need help making an ODBC MySQL Connection

  - by Andy Moore

  Short Version: How do I connect from PowerShell to an ODBC 5.1 MySQL Driver? I can't seem to find any connection strings that accurately have a "Provider" field for this particular instance. (See bottom of this question for examples/errors) ===== Long Version: I'm not a server guy, and I've been handed the task of setting up PowerGadgets on our network. I have a MySQL server running on a Linux box, that is configured for remote access and has a user defined for remote access as well. On my windows desktop PC, I have PowerGadgets installed. I installed the MySQL ODBC 5.1 connector, and went to Control Panel Data Sources and set up a User DSN connection to the database. The connection, user, and pass seem to be correct because it lists the tables of the database in my windows control panel. Where I'm running into trouble is in 3 places in PowerGadgets: When selecting a data source, I can select "SQL Server". Inputting the servers IP address does not work and I can't get this option to work at all. When selecting a data source, I can select "OleDB". This screen has a wizard on it, that appears to populate all the correct information (including database table names!) for me. "Test Connection" runs great. But if I try to complete the wizard, I get the error "The .NET Framework data provider for OLEDB does not support the MS Ole DB provider for ODBC Drivers." When selecting a data source, I can select "ODBC". This screen does not have a wizard and I cannot figure out a "connection string" that works. Typically it will respond with the error "The field 'Provider' is missing". Googling ODBC connection strings doesn't reveal any examples with a "provider" field and have no idea what to put in here. The connection string (for #2) above contains "SQLOLEDB" as a provider, and upon inputting that value into this connection string I get the same connection error that #2 gets. I believe I can solve my problems by figuring out a connection string for #3 but don't know where to get started. (PowerGadgets also allows for PowerShell support but I believe I will run into the same problem there) == Here's my current PowerShell connection that doesn't work: invoke-sql -connection "Driver={MySQL ODBC 5.1 Driver};Initial Catalog=hq_live;Data Source=HQDB" -sql "Select * FROM accounts" Spits back the error: "Invoke-Sql : An OLE DB Provider was not specified in the ConnectionString. An example would be, 'Provider=SQLOLEDB;'. == Another string that doesn't work: invoke-sql -connection "Provider=MSDASQL.1;Persist Security Info=False;Data Source=HQDB;Initial Catalog=hq_live" -sql "select * from accounts" And the error: The .Net Framework Data Provider for OLEDB (System.Data.OleDb) does not support the Microsoft OLE DB Provider for ODBC Drivers (MSDASQL). Use the .Net Framework Data Provider for ODBC (System.Data.Odbc).

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• can not connect through SCP, but SSH connections works

  - by Joe Cabezas

  i am trying to connect to my server to transfer file using scp: $ scp -v -r -P <port> <user>@<host>:~/dir/ dir/ this is the output: OpenSSH_5.2p1, OpenSSL 0.9.8r 8 Feb 2011 debug1: Reading configuration data /Users/joe/.ssh/config debug1: Reading configuration data /etc/ssh_config debug1: Connecting to <host> [<host>] port <port>. debug1: Connection established. debug1: identity file /Users/joe/.ssh/identity type -1 debug1: identity file /Users/joe/.ssh/id_rsa type -1 debug1: identity file /Users/joe/.ssh/id_dsa type -1 ssh_exchange_identification: Connection closed by remote host but connecting via SSH works fine: $ ssh <user>@<host> -p <port> <user>@<host>'s password: <user>@<host>:~$ OK what can be wrong with this? my /etc/ssh/sshd_config file on the host is: # Package generated configuration file # See the sshd_config(5) manpage for details # What ports, IPs and protocols we listen for Port <port> # Use these options to restrict which interfaces/protocols sshd will bind to #ListenAddress :: #ListenAddress 0.0.0.0 Protocol 2 # HostKeys for protocol version 2 HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_dsa_key HostKey /etc/ssh/ssh_host_ecdsa_key #Privilege Separation is turned on for security UsePrivilegeSeparation yes # Lifetime and size of ephemeral version 1 server key KeyRegenerationInterval 3600 ServerKeyBits 768 # Logging SyslogFacility AUTH LogLevel INFO # Authentication: LoginGraceTime 120 PermitRootLogin yes StrictModes yes RSAAuthentication yes PubkeyAuthentication no #AuthorizedKeysFile %h/.ssh/authorized_keys # Don't read the user's ~/.rhosts and ~/.shosts files IgnoreRhosts yes # For this to work you will also need host keys in /etc/ssh_known_hosts RhostsRSAAuthentication no # similar for protocol version 2 HostbasedAuthentication no # Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication #IgnoreUserKnownHosts yes # To enable empty passwords, change to yes (NOT RECOMMENDED) PermitEmptyPasswords no # Change to yes to enable challenge-response passwords (beware issues with # some PAM modules and threads) ChallengeResponseAuthentication no # Change to no to disable tunnelled clear text passwords #PasswordAuthentication yes # Kerberos options #KerberosAuthentication no #KerberosGetAFSToken no #KerberosOrLocalPasswd yes #KerberosTicketCleanup yes # GSSAPI options #GSSAPIAuthentication no #GSSAPICleanupCredentials yes X11Forwarding yes X11DisplayOffset 10 PrintMotd no PrintLastLog yes TCPKeepAlive yes #UseLogin no #MaxStartups 10:30:60 #Banner /etc/issue.net # Allow client to pass locale environment variables AcceptEnv LANG LC_* Subsystem sftp /usr/lib/openssh/sftp-server # Set this to 'yes' to enable PAM authentication, account processing, # and session processing. If this is enabled, PAM authentication will # be allowed through the ChallengeResponseAuthentication and # PasswordAuthentication. Depending on your PAM configuration, # PAM authentication via ChallengeResponseAuthentication may bypass # the setting of "PermitRootLogin without-password". # If you just want the PAM account and session checks to run without # PAM authentication, then enable this but set PasswordAuthentication # and ChallengeResponseAuthentication to 'no'. UsePAM yes

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• Configure Postfix to Port other than 25

  - by bwheeler96

  I've done quite a bit of googling on how to reconfigure postfix to work on a different port, but I still can't fond the line(s) people keep talking about in my master.cf. I'm using OS X Mountain Lion, and my ISP blocks traffic both ways on port 25. people have said to look for a line that says smtp inet n - n - - smtpd I can't find it. This is (what I believe to be) unmodified # ==== Begin auto-generated section ======================================== # This section of the master.cf file is auto-generated by the Server Admin # Mail backend plugin whenever mails settings are modified. smtp inet n - n - 1 postscreen smtpd pass - - n - - smtpd dnsblog unix - - n - 0 dnsblog tlsproxy unix - - n - 0 tlsproxy submission inet n - n - - smtpd -o smtpd_tls_security_level=encrypt smtp unix - - n - - smtp # === End auto-generated section =========================================== # Modern SMTP clients communicate securely over port 25 using the STARTTLS command. # Some older clients, such as Outlook 2000 and its predecessors, do not properly # support this command and instead assume a preconfigured secure connection # on port 465. This was sometimes called "smtps", but such usage was never # approved by the IANA and therefore conflicts with another, legitimate assignment. # For more details about managing secure SMTP connections with postfix, please see: # http://www.postfix.org/TLS_README.html # To read more about configuring secure connections with Outlook 2000, please read: # http://support.microsoft.com/default.aspx?scid=kb;en-us;Q307772 # Apple does not support the use of port 465 for this purpose. # After determining that connecting clients do require this behavior, you may choose # to manually enable support for these older clients by uncommenting the following # four lines. #465 inet n - n - - smtpd # -o smtpd_tls_wrappermode=yes # -o smtpd_sasl_auth_enable=yes # -o smtpd_client_restrictions=permit_sasl_authenticated,reject # -o milter_macro_daemon_name=ORIGINATING #628 inet n - n - - smtp pickup fifo n - n 60 1 pickup cleanup unix n - n - 0 cleanup qmgr fifo n - n 300 1 qmgr #qmgr fifo n - n 300 1 oqmgr tlsmgr unix - - n 1000? 1 tlsmgr rewrite unix - - n - - trivial-rewrite bounce unix - - n - 0 bounce defer unix - - n - 0 bounce trace unix - - n - 0 bounce verify unix - - n - 1 verify sacl-cache unix - - n - 1 sacl-cache flush unix n - n 1000? 0 flush proxymap unix - - n - - proxymap proxywrite unix - - n - 1 proxymap # When relaying mail as backup MX, disable fallback_relay to avoid MX loops relay unix - - n - - smtp -o smtp_fallback_relay= # -o smtp_helo_timeout=5 -o smtp_connect_timeout=5 showq unix n - n - - showq error unix - - n - - error retry unix - - n - - error discard unix - - n - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - n - - lmtp anvil unix - - n - 1 anvil scache unix - - n - 1 scache # # ==================================================================== # Interfaces to non-Postfix software. Be sure to examine the manual # pages of the non-Postfix software to find out what options it wants.

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