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• Fast Data - Big Data's achilles heel

  - by thegreeneman

  At OOW 2013 in Mark Hurd and Thomas Kurian's keynote, they discussed Oracle's Fast Data software solution stack and discussed a number of customers deploying Oracle's Big Data / Fast Data solutions and in particular Oracle's NoSQL Database.  Since that time, there have been a large number of request seeking clarification on how the Fast Data software stack works together to deliver on the promise of real-time Big Data solutions.   Fast Data is a software solution stack that deals with one aspect of Big Data, high velocity.   The software in the Fast Data solution stack involves 3 key pieces and their integration:  Oracle Event Processing, Oracle Coherence, Oracle NoSQL Database.   All three of these technologies address a high throughput, low latency data management requirement.   Oracle Event Processing enables continuous query to filter the Big Data fire hose, enable intelligent chained events to real-time service invocation and augments the data stream to provide Big Data enrichment. Extended SQL syntax allows the definition of sliding windows of time to allow SQL statements to look for triggers on events like breach of weighted moving average on a real-time data stream.    Oracle Coherence is a distributed, grid caching solution which is used to provide very low latency access to cached data when the data is too big to fit into a single process, so it is spread around in a grid architecture to provide memory latency speed access.  It also has some special capabilities to deploy remote behavioral execution for "near data" processing.   The Oracle NoSQL Database is designed to ingest simple key-value data at a controlled throughput rate while providing data redundancy in a cluster to facilitate highly concurrent low latency reads.  For example, when large sensor networks are generating data that need to be captured while analysts are simultaneously extracting the data using range based queries for upstream analytics.  Another example might be storing cookies from user web sessions for ultra low latency user profile management, also leveraging that data using holistic MapReduce operations with your Hadoop cluster to do segmented site analysis.  Understand how NoSQL plays a critical role in Big Data capture and enrichment while simultaneously providing a low latency and scalable data management infrastructure thru clustered, always on, parallel processing in a shared nothing architecture. Learn how easily a NoSQL cluster can be deployed to provide essential services in industry specific Fast Data solutions. See these technologies work together in a demonstration highlighting the salient features of these Fast Data enabling technologies in a location based personalization service. The question then becomes how do these things work together to deliver an end to end Fast Data solution.  The answer is that while different applications will exhibit unique requirements that may drive the need for one or the other of these technologies, often when it comes to Big Data you may need to use them together.   You may have the need for the memory latencies of the Coherence cache, but just have too much data to cache, so you use a combination of Coherence and Oracle NoSQL to handle extreme speed cache overflow and retrieval.   Here is a great reference to how these two technologies are integrated and work together.  Coherence & Oracle NoSQL Database.   On the stream processing side, it is similar as with the Coherence case.  As your sliding windows get larger, holding all the data in the stream can become difficult and out of band data may need to be offloaded into persistent storage.  OEP needs an extreme speed database like Oracle NoSQL Database to help it continue to perform for the real time loop while dealing with persistent spill in the data stream.  Here is a great resource to learn more about how OEP and Oracle NoSQL Database are integrated and work together.  OEP & Oracle NoSQL Database.

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• [EF + ORACLE] Updating and Deleting Entities

  - by JTorrecilla

  Prologue In previous chapters we have seen how to insert data through EF, with and without sequences. In this one, we are going to see how to Update and delete Data from the DB. Updating data The update of the Entity Data (properties) is a very common and easy action. Before of change any of the properties of the Entity, we can check the EntityState property, and we can see that is EntityState.Unchanged.   For making an update it is needed to get the Entity which will be modified. In the following example, I use the GetEmployeeByNumber to get a valid Entity: 1: EMPLEADOS emp=GetEmployeeByNumber(2); 2: emp.Name="a"; 3: emp.Phone="2"; 4: emp.Mail="aa"; After modifying the desired properties of the Entity, we are going to check again Entitystate property, which now has the EntityState.Modified value. To persist the changes to the DB is necessary to invoke the SaveChanges function of our context. 1: context.SaveChanges(); After modifying the desired properties of the Entity, we are going to check again Entitystate property, which now has the EntityState.Modified value. To persist the changes to the DB is necessary to invoke the SaveChanges function of our context. If we check again the EntityState property we will see that the value will be EntityState.Unchanged.   Deleting Data Another easy action is to delete an Entity.   The first step to delete an Entity from the DB is to select the entity: 1: CLIENTS selectedClient = GetClientByNumber(15); 2: context.CLIENTES.DeleteObject(clienteSeleccionado); Before invoking the DeleteObject function, we will check EntityStet which value must be EntityState.Unchanged. After deleting the object, the state will be changed to EntitySate.Deleted. To commit the action we have to invoke the SaveChanges function. Aftar that, the EntityState property will be EntityState.Detached. Cascade Entity Framework lets cascade updates and deletes, although I never see cascade updates. What is a cascade delete? A cascade delete is an action that allows to delete all the related object to the object we desire to delete. This option could be established in the DB manager, or it could be in the EF model designer. For example: With a given relation (1-N) between clients and requests. The common situation must be to let delete those clients whose have no requests. If we select the relation between both entities, and press the second mouse button, we can see the properties panel of the relation. The props are: This grid shows the relations indicating the Master table(Clients) and the end point (Cabecera or Requests) The property “End 1 OnDelete” indicates the action to do when a Entity from the Master will be deleted. There are two options: - None: No action will be done, it is said, if a Entity has details entities it could not be deleted. - Cascade: It will delete all related entities to the master Entity. If we enable the cascade delete in a relation, and we invoke the DeleteObject function of the set, we could observe that all the related object indicates a Entitystate.Deleted state. Like an update, insert or common delete, until we commit the changes with SaveChanges function, the data would not be commited. Si habilitamos el borrado en cascada de una relación, e invocamos a la función DeleteObject del conjunto, podremos observar que todas las entidades de Detalle (de la relación indicada) presentan el valor EntityState.Deleted en la propiedad EntityState. Del mismo modo que en el borrado, inserción o actualización, hasta que no se invoque al método SaveChanges, los cambios no van a ser confirmados en la Base de Datos. Finally In this chapter we have seen how to update a Entity, how to delete an Entity and how to implement Cascade Deleting through EF. In next chapters we will see how to query the DB data.

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• The five steps of business intelligence adoption: where are you?

  - by Red Gate Software BI Tools Team

  When I was in Orlando and New York last month, I spoke to a lot of business intelligence users. What they told me suggested a path of BI adoption. The user’s place on the path depends on the size and sophistication of their organisation. Step 1: A company with a database of customer transactions will often want to examine particular data, like revenue and unit sales over the last period for each product and territory. To do this, they probably use simple SQL queries or stored procedures to produce data on demand. Step 2: The results from step one are saved in an Excel document, so business users can analyse them with filters or pivot tables. Alternatively, SQL Server Reporting Services (SSRS) might be used to generate a report of the SQL query for display on an intranet page. Step 3: If these queries are run frequently, or business users want to explore data from multiple sources more freely, it may become necessary to create a new database structured for analysis rather than CRUD (create, retrieve, update, and delete). For example, data from more than one system — plus external information — may be incorporated into a data warehouse. This can become ‘one source of truth’ for the business’s operational activities. The warehouse will probably have a simple ‘star’ schema, with fact tables representing the measures to be analysed (e.g. unit sales, revenue) and dimension tables defining how this data is aggregated (e.g. by time, region or product). Reports can be generated from the warehouse with Excel, SSRS or other tools. Step 4: Not too long ago, Microsoft introduced an Excel plug-in, PowerPivot, which allows users to bring larger volumes of data into Excel documents and create links between multiple tables.  These BISM Tabular documents can be created by the database owners or other expert Excel users and viewed by anyone with Excel PowerPivot. Sometimes, business users may use PowerPivot to create reports directly from the primary database, bypassing the need for a data warehouse. This can introduce problems when there are misunderstandings of the database structure or no single ‘source of truth’ for key data. Step 5: Steps three or four are often enough to satisfy business intelligence needs, especially if users are sophisticated enough to work with the warehouse in Excel or SSRS. However, sometimes the relationships between data are too complex or the queries which aggregate across periods, regions etc are too slow. In these cases, it can be necessary to formalise how the data is analysed and pre-build some of the aggregations. To do this, a business intelligence professional will typically use SQL Server Analysis Services (SSAS) to create a multidimensional model — or “cube” — that more simply represents key measures and aggregates them across specified dimensions. Step five is where our tool, SSAS Compare, becomes useful, as it helps review and deploy changes from development to production. For us at Red Gate, the primary value of SSAS Compare is to establish a dialog with BI users, so we can develop a portfolio of products that support creation and deployment across a range of report and model types. For example, PowerPivot and the new BISM Tabular model create a potential customer base for tools that extend beyond BI professionals. We’re interested in learning where people are in this story, so we’ve created a six-question survey to find out. Whether you’re at step one or step five, we’d love to know how you use BI so we can decide how to build tools that solve your problems. So if you have a sixty seconds to spare, tell us on the survey!

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• What Counts for a DBA: Skill

  - by drsql

  “Practice makes perfect:” right? Well, not exactly. The reality of it all is that this saying is an untrustworthy aphorism. I discovered this in my “younger” days when I was a passionate tennis player, practicing and playing 20+ hours a week. No matter what my passion level was, without some serious coaching (and perhaps a change in dietary habits), my skill level was never going to rise to a level where I could make any money at the sport that involved something other than selling tennis balls at a sporting goods store. My game may have improved with all that practice but I had too many bad practices to overcome. Practice by itself merely reinforces what we know and what we can figure out naturally. The truth is actually closer to the expression used by Vince Lombardi: “Perfect practice makes perfect.” So how do you get to become skilled as a DBA if practice alone isn’t sufficient? Hit the Internet and start searching for SQL training and you can find 100 different sites. There are also hundreds of blogs, magazines, books, conferences both onsite and virtual. But then how do you know who is good? Unfortunately often the worst guide can be to find out the experience level of the writer. Some of the best DBAs are frighteningly young, and some got their start back when databases were stored on stacks of paper with little holes in it. As a programmer, is it really so hard to understand normalization? Set based theory? Query optimization? Indexing and performance tuning? The biggest barrier often is previous knowledge, particularly programming skills cultivated before you get started with SQL. In the world of technology, it is pretty rare that a fresh programmer will gravitate to database programming. Database programming is very unsexy work, because without a UI all you have are a bunch of text strings that you could never impress anyone with. Newbies spend most of their time building UIs or apps with procedural code in C# or VB scoring obvious interesting wins. Making matters worse is that SQL programming requires mastery of a much different toolset than most any mainstream programming skill. Instead of controlling everything yourself, most of the really difficult work is done by the internals of the engine (written by other non-relational programmers…we just can’t get away from them.) So is there a golden road to achieving a high skill level? Sadly, with tennis, I am pretty sure I’ll never discover it. However, with programming it seems to boil down to practice in applying the appropriate techniques for whatever type of programming you are doing. Can a C# programmer build a great database? As long as they don’t treat SQL like C#, absolutely. Same goes for a DBA writing C# code. None of this stuff is rocket science, as long as you learn to understand that different types of programming require different skill sets and you as a programmer must recognize the difference between one of the procedural languages and SQL and treat them differently. Skill comes from practicing doing things the right way and making “right” a habit.

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• Login via XDMCP not possible to 12.04 from Squeeze box

  - by Joysn

  Can anybody tell me whats wrong with my 12.04/lightdm/XDMCP setup? i activated X11 remote via tcp and XDMCP on lightdm and restarted lightdm: [SeatDefaults] user-session=ubuntu greeter-session=unity-greeter xserver-allow-tcp=true [XDMCPServer] enabled=true whenever i try to login to the remove lightdm via Xephyr Xephyr -query <remote ip> :10 i get the following trace: SELinux: Disabled on system, not enabling in X server [dix] Could not init font path element /usr/share/fonts/X11/cyrillic, removing from list! Ignoring device from udev. Ignoring device from udev. Ignoring device from udev. Ignoring device from udev. Ignoring device from udev. Ignoring device from udev. *** glibc detected *** Xephyr: free(): corrupted unsorted chunks: 0x08659088 *** ======= Backtrace: ========= /lib/i686/cmov/libc.so.6(+0x6af71)[0xb72b6f71] /lib/i686/cmov/libc.so.6(+0x6c7c8)[0xb72b87c8] /lib/i686/cmov/libc.so.6(cfree+0x6d)[0xb72bb8ad] Xephyr(Xfree+0x21)[0x81ddcd1] Xephyr(SrvXkbResizeKeyType+0x59e)[0x81ca01e] Xephyr[0x81ab8eb] Xephyr[0x81ac8c2] Xephyr[0x8088807] Xephyr[0x807c16a] /lib/i686/cmov/libc.so.6(__libc_start_main+0xe6)[0xb7262ca6] Xephyr[0x8061081] ======= Memory map: ======== 08048000-08204000 r-xp 00000000 fd:00 1148994 /usr/bin/Xephyr 08204000-08210000 rw-p 001bc000 fd:00 1148994 /usr/bin/Xephyr 08210000-08239000 rw-p 00000000 00:00 0 08496000-087ac000 rw-p 00000000 00:00 0 [heap] b5600000-b5621000 rw-p 00000000 00:00 0 b5621000-b5700000 ---p 00000000 00:00 0 b5762000-b588f000 rw-p 00000000 00:00 0 b588f000-b58b3000 r-xp 00000000 fd:00 50040 /usr/lib/libexpat.so.1.5.2 b58b3000-b58b5000 rw-p 00024000 fd:00 50040 /usr/lib/libexpat.so.1.5.2 b58d0000-b5ae4000 r-xp 00000000 fd:00 1212530 /usr/lib/dri/swrast_dri.so b5ae4000-b5ae9000 rw-p 00214000 fd:00 1212530 /usr/lib/dri/swrast_dri.so b5ae9000-b5af8000 rw-p 00000000 00:00 0 b5af8000-b5c24000 rw-s 00000000 00:04 1420132375 /SYSV00000000 (deleted) b5c24000-b5c28000 r-xp 00000000 fd:00 770089 /usr/lib/libXfixes.so.3.1.0 b5c28000-b5c29000 rw-p 00003000 fd:00 770089 /usr/lib/libXfixes.so.3.1.0 b5c29000-b5c31000 r-xp 00000000 fd:00 772923 /usr/lib/libXrender.so.1.3.0 b5c31000-b5c32000 rw-p 00007000 fd:00 772923 /usr/lib/libXrender.so.1.3.0 b5c32000-b5c3a000 r-xp 00000000 fd:00 49913 /usr/lib/libXcursor.so.1.0.2 b5c3a000-b5c3b000 rw-p 00007000 fd:00 49913 /usr/lib/libXcursor.so.1.0.2 b5c3b000-b5c58000 r-xp 00000000 09:02 466930 /lib/libgcc_s.so.1 b5c58000-b5c59000 rw-p 0001c000 09:02 466930 /lib/libgcc_s.so.1 b5c59000-b5c5b000 rw-p 00000000 00:00 0 b5c5b000-b7121000 r-xp 00000000 fd:00 49164 /usr/lib/libnvidia-glcore.so.256.53 b7121000-b7178000 rwxp 014c6000 fd:00 49164 /usr/lib/libnvidia-glcore.so.256.53 b7178000-b7188000 rwxp 00000000 00:00 0 b7188000-b7189000 r-xp 00000000 fd:00 49193 /usr/lib/tls/libnvidia-tls.so.256.53 b7189000-b718a000 rw-p 00000000 fd:00 49193 /usr/lib/tls/libnvidia-tls.so.256.53 b718a000-b718b000 rw-p 00000000 00:00 0 b718b000-b7190000 r-xp 00000000 fd:00 50172 /usr/lib/libfontenc.so.1.0.0 b7190000-b7191000 rw-p 00005000 fd:00 50172 /usr/lib/libfontenc.so.1.0.0 b7191000-b71a1000 r-xp 00000000 09:02 466849 /lib/libbz2.so.1.0.4 b71a1000-b71a2000 rw-p 00010000 09:02 466849 /lib/libbz2.so.1.0.4 b71a2000-b71b5000 r-xp 00000000 fd:00 52002 /usr/lib/libz.so.1.2.3.4 b71b5000-b71b6000 rw-p 00013000 fd:00 52002 /usr/lib/libz.so.1.2.3.4 b71b6000-b722a000 r-xp 00000000 fd:00 51162 /usr/lib/libfreetype.so.6.6.0 b722a000-b722e000 rw-p 00073000 fd:00 51162 /usr/lib/libfreetype.so.6.6.0 b722e000-b7246000 r-xp 00000000 fd:00 49652 /usr/lib/libxcb.so.1.1.0 b7246000-b7247000 rw-p 00017000 fd:00 49652 /usr/lib/libxcb.so.1.1.0 b7247000-b7248000 rw-p 00000000 00:00 0 b7248000-b724b000 r-xp 00000000 fd:00 54148 /usr/lib/libgpg-error.so.0.4.0 b724b000-b724c000 rw-p 00002000 fd:00 54148 /usr/lib/libgpg-error.so.0.4.0 b724c000-b738c000 r-xp 00000000 09:02 467095 /lib/i686/cmov/libc-2.11.3.so

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• Identity in .NET 4.5&ndash;Part 3: (Breaking) changes

  - by Your DisplayName here!

  I recently started porting a private build of Thinktecture.IdentityModel to .NET 4.5 and noticed a number of changes. The good news is that I can delete large parts of my library because many features are now in the box. Along the way I found some other nice additions. ClaimsIdentity now has methods to query the claims collection, e.g. HasClaim(), FindFirst(), FindAll(). ClaimsPrincipal has those methods as well. But they work across all contained identities. Nice! ClaimsPrincipal.Current retrieves the ClaimsPrincipal from Thread.CurrentPrincipal. Combined with the above changes, no casting necessary anymore. SecurityTokenHandler now has read and write methods that work directly with strings. This makes it much easier to deal with non-XML tokens like SWT or JWT. A new session security token handler that uses the ASP.NET machine key to protect the cookie. This makes it easier to get started in web farm scenarios. No need for a custom service host factory or the federation behavior anymore. WCF can be switched into “WIF mode” with the useIdentityConfiguration switch (odd name though). Tooling has become better and the new test STS makes it very easy to get started. On the other hand – and that was kind of expected – to bring claims into the core framework, there are also some breaking changes for WIF code. If you want to migrate (and I would recommend that), most changes to your code are mechanical. The following is a brain dump of the changes I encountered. Assembly Microsoft.IdentityModel is gone. The new functionality is now in mscorlib, System.IdentityModel(.Services) and System.ServiceModel. All the namespaces have changed as well. No IClaimsPrincipal and IClaimsIdentity anymore. Configuration section has been split into <system.identityModel /> and <system.identityModel.services />. WCF configuration story has changed as well. Claim.ClaimType is now Claim.Type. ClaimCollection is now IEnumerable<Claim>. IsSessionMode is now IsReferenceMode. Bootstrap token handling is different now. ClaimsPrincipalHttpModule is gone. This is not really needed anymore, apart from maybe claims transformation (see here). Various factory methods on ClaimsPrincipal are gone (e.g. ClaimsPrincipal.CreateFromIdentity()). SecurityTokenHandler.ValidateToken now returns a ReadOnlyCollection<ClaimsIdentity>. Some lower level helper classes are gone or internal now (e.g. KeyGenerator). The WCF WS-Trust bindings are gone. I think this is a pity. They were *really* useful when doing work with WSTrustChannelFactory. Since WIF is part of the Windows operating system and also supported in future versions of .NET, there is no urgent need to migrate to the 4.5 claims model. But obviously, going forward, at some point you want to make the move.

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• Appropriate design / technologies to handle dynamic string formatting?

  - by Mark W

  recently I was tasked with implementing a way of adding support for versioning of hardware packet specifications to one of our libraries. First a bit of information about the project. We have a hardware library which has classes for each of the various commands we support sending to our hardware. These hardware modules are essentially just lights with a few buttons, and a 2 or 4 digit display. The packets typically follow the format {SOH}AADD{ETX}, where AA is our sentinel action code, and DD is the device ID. These packet specs are different from one command to the next obviously, and the different firmware versions we have support different specifications. For example, on version 1 an action code of 14 may have a spec of {SOH}AADDTEXT{ETX} which would be AA = 14 literal, DD = device ID, TEXT = literal text to display on the device. Then we come out with a revision with adds an extended byte(s) onto the end of the packet like this {SOH}AADDTEXTE{ETX}. Assume the TEXT field is fixed width for this example. We have now added a new field onto the end which could be used to say specify the color or flash rate of the text/buttons. Currently this java library only supports one version of the commands, the latest. In our hardware library we would have a class for this command, say a DisplayTextArgs.java. That class would have fields for the device ID, the text, and the extended byte. The command class would expose a method which generates the string ("{SOH}AADDTEXTE{ETX}") using the value from the class. In practice we would create the Args class as needed, populate the fields, call the method to get our packet string, then ship that down across the CAN. Some of our other commands specification can vary for the same command, on the same version, depending on some runtime state. For example, another command for version 1 may be {SOH}AA{ETX}, where this action code clears all of the modules behind a specific controller device of their text. We may overload this packet to have option fields with multiple meanings like {SOH}AAOC{ETX} where OC is literal text, which tells the controller to only clear text on a specific module type, and to leave the others alone, or the spec could also have an option format of {SOH}AADD{ETX} to clear the text off a a specific device. Currently, in the method which generates the packet string, we would evaluate fields on the args class to determine which spec we will be using when formatting the packet. For this example, it would be along the lines of: if m_DeviceID != null then use {SOH}AADD{ETX} else if m_ClearOCs == true then use {SOH}AAOC{EXT} else use {SOH}AA{ETX} I had considered using XML, or a database to store String.format format strings, which were linked to firmware version numbers in some table. We would load them up at startup, and pass in the version number of the hardwares firmware we are currently using (I can query the devices for their firmware version, but the version is not included in all packets as part of the spec). This breaks down pretty quickly because of the dynamic nature of how we select which version of the command to use. I then considered using a rule engine to possibly build out expressions which could be interpreted at runtume, to evaluate the args class's state, and from that select the appropriate format string to use, but my brief look at rule engines for java scared me away with its complexity. While it seems like it might be a viable solution, it seems overly complex. So this is why I am here. I wouldn't say design is my strongest skill, and im having trouble figuring out the best way to approach this problem. I probably wont be able to radically change the args classes, but if the trade off was good enough, I may be able to convince my boss that the change is appropriate. What I would like from the community is some feedback on some best practices / design methodologies / API or other resources which I could use to accomplish: Logic to determine which set of commands to use for a given firmware version Of those command, which version of each command to use (based on the args classes state) Keep the rules logic decoupled from the application so as to avoid needing releases for every firmware version Be simple enough so I don't need weeks of study and trial and error to implement effectively.

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• TFS 2012 API Create Alert Subscriptions

  - by Bob Hardister

  Originally posted on: http://geekswithblogs.net/BobHardister/archive/2013/07/24/tfs-2012-api-create-alert-subscriptions.aspxThere were only a few post on this and I felt like really important information was left out: What the defaults are How to create the filter string Here’s the code to create the subscription. Get the Collection public TfsTeamProjectCollection GetCollection(string collectionUrl) { try { //connect to the TFS collection using the active user TfsTeamProjectCollection tpc = new TfsTeamProjectCollection(new Uri(collectionUrl)); tpc.EnsureAuthenticated(); return tpc; } catch (Exception) { return null; } } Use Impersonation Because my app is used to create “support tickets” as stories in TFS, I use impersonation so the subscription is setup for the “requester.”  That way I can take all the defaults for the subscription delivery preferences. public TfsTeamProjectCollection GetCollectionImpersonation(string collectionUrl, string impersonatingUserAccount) { // see: http://blogs.msdn.com/b/taylaf/archive/2009/12/04/introducing-tfs-impersonation.aspx try { TfsTeamProjectCollection tpc = GetCollection(collectionUrl); if (!(tpc == null)) { //get the TFS identity management service (v2 is 2012 only) IIdentityManagementService2 ims = tpc.GetService<IIdentityManagementService2>(); //look up the user we want to impersonate TeamFoundationIdentity identity = ims.ReadIdentity(IdentitySearchFactor.AccountName, impersonatingUserAccount, MembershipQuery.None, ReadIdentityOptions.None); //create a new connection using the impersonated user account //note: do not ensure authentication because the impersonated user may not have //windows authentication at execution if (!(identity == null)) { TfsTeamProjectCollection itpc = new TfsTeamProjectCollection(tpc.Uri, identity.Descriptor); return itpc; } else { //the user account is not found return null; } } else { return null; } } catch (Exception) { return null; } } Create the Alert Subscription public bool SetWiAlert(string collectionUrl, string projectName, int wiId, string emailAddress, string userAccount) { bool setSuccessful = false; try { //use impersonation so the event service creating the subscription will default to //the correct account: otherwise domain ambiguity could be a problem TfsTeamProjectCollection itpc = GetCollectionImpersonation(collectionUrl, userAccount); if (!(itpc == null)) { IEventService es = itpc.GetService(typeof(IEventService)) as IEventService; DeliveryPreference deliveryPreference = new DeliveryPreference(); //deliveryPreference.Address = emailAddress; deliveryPreference.Schedule = DeliverySchedule.Immediate; deliveryPreference.Type = DeliveryType.EmailHtml; //the following line does not work for two reasons: //string filter = string.Format("\"ID\" = '{0}' AND \"Authorized As\" <> '[Me]'", wiId); //1. the create fails because there is a space between Authorized As //2. the explicit query criteria are all incorrect anyway // see uncommented line for what does work: you have to create the subscription mannually // and then get it to view what the filter string needs to be (see following commented code) //this works string filter = string.Format("\"CoreFields/IntegerFields/Field[Name='ID']/NewValue\" = '12175'" + " AND \"CoreFields/StringFields/Field[Name='Authorized As']/NewValue\"" + " <> '@@MyDisplayName@@'", projectName, wiId); string eventName = string.Format("<PT N=\"ALM Ticket for Work Item {0}\"/>", wiId); es.SubscribeEvent("WorkItemChangedEvent", filter, deliveryPreference, eventName); ////use this code to get existing subscriptions: you can look at manually created ////subscriptions to see what the filter string needs to be //IIdentityManagementService2 ims = itpc.GetService<IIdentityManagementService2>(); //TeamFoundationIdentity identity = ims.ReadIdentity(IdentitySearchFactor.AccountName, // userAccount, // MembershipQuery.None, // ReadIdentityOptions.None); //var existingsubscriptions = es.GetEventSubscriptions(identity.Descriptor); setSuccessful = true; return setSuccessful; } else { return setSuccessful; } } catch (Exception) { return setSuccessful; } }

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• How can I change the color of the text in my iFrame? [closed]

  - by VinylScratch

  I have code here: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>Frag United Banlist</title> </head> <body> <h1>Tekkit Banlist</h1> <?php // change these things $server = "server-host"; $dbuser = "correct-user"; $dbpass = "correct-password"; $dbname = "correct-database"; mysql_connect($server, $dbuser, $dbpass); mysql_select_db($dbname); $result = mysql_query("SELECT * FROM banlist ORDER BY id DESC"); //This will display the most recent by id edit this query how you see fit. Limit, Order, ect. echo "<table width=100% border=1 cellpadding=3 cellspacing=0>"; echo "<tr style=\"font-weight:bold\"> <td>ID</td> <td>User</td> <td>Reason</td> <td>Admin/Mod</td> <td>Time</td> <td>Ban Length</td> </tr>"; while($row = mysql_fetch_assoc($result)){ if($col == "#eeeeee"){ $col = "#ffffff"; }else{ $col = "#eeeeee"; } echo "<tr bgcolor=$col>"; echo "<td>".$row['id']."</td>"; echo "<td>".$row['user']."</td>"; echo "<td>".$row['reason']."</td>"; echo "<td>".$row['admin']."</td>"; //Convert Epoch Time to Standard format $datetime = date("F j, Y, g:i a", $row['time']); echo "<td>$datetime</td>"; $dateconvert = date("F j, Y, g:i a", $row['length']); if($row['length'] == "0"){ echo "<td>None</td>"; }else{ echo "<td>$dateconvert</td>"; } echo "<td>".$row['id']."</td>"; echo "</tr>"; } echo"</table>" ?> </div> </body></html> And I am trying to make it so that when I put it in this iframe: <iframe src="http://bans.fragunited.net/" width="100%" length="100%"><p>Your browser does not support iframes.</p></iframe> But if you go to this page, fragunited.net/bans, (not bans.fragunited.net) the text is black and I want it to be white so you can actually see it. Sorry for the large amount of code, however I don't know where you have to put the code to change the color.

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• WMI Rights required to read root\MicrosoftIISv2 in IIS7 with IIS6 compatibility mode

  - by JoeBilly

  I need to manage my IIS7 (Windows Server 2008) remotely with a WMI IIS6 API. So I added the IIS6 WMI Compatibility and IIS6 Metabase Compatibility roles to access the root\MicrosoftIIsv2 namespace. I have a domain account which is not administrator on the remote machine ; with this right, everything is ok. I configured these rights for my domain account to access the root\MicrosoftIIsv2 WMI namespace remotely ; note that these rights work perfectly on a IIS6 and Windows Server 2003 : DCOM : Account in Distributed COM Users Remote & local access to DCOM WMI : Root\CIMV2 (I need access here too) Execute methods, Enable Account, Remote Enable Root\Default (I need access here too) Execute methods, Enable Account, Remote Enable Root\MicrosoftIISv2 Execute methods, Enable Account, Provider Write, Remote Enable IIS Metabase (Metabase Explorer) : LM Full Control (W3SVC inherits these permissions) I tried to give some access on C:\Windows\System32\inetsrv too ; don't know if needed. My issue is : I can't list the IIS WebSites (\root\MicrosoftIISv2:IIsWebServerSetting.Name="W3SVC/*"). I don't get an 'access denied' but nothing is returned. My API and powershell tests can connect and execute queries in the root\MicrosoftIISv2 namespace I can read the IIsComputer class ex: Get-WmiObject IIsComputer -namespace "ROOT\MicrosoftIISv2" -authentication PacketPrivacy | SELECT * I can't read the IIsWebServerSetting, IIsWebServer ... to list the WebSites : the query returns an empty collection ex: Get-WmiObject IIsWebServerSetting -namespace "ROOT\MicrosoftIISv2" -authentication PacketPrivacy | SELECT ServerComment All queries work perfectly if the account is administrator as already said I am using PacketPrivacy authentication FI: I got a Warning Event 5605 with the Administrator right or not, that does not seem to have an impact : The root\MicrosoftIISv2 namespace is marked with the RequiresEncryption flag. Access to this namespace might be denied if the script or application does not have the appropriate authentication level. Change the authentication level to Pkt_Privacy and run the script or application again Ok, I have some more informations, when I use IIS 6 Metabase Explorer with my administrator account I can see the rights are correctly inherited for my non-administrator account. But when I try to connect using my non-administrator account, I can list the LM node, but get an "access denied, failed to get a key's data" when I try to browse the child nodes. I'll check further. I tried to Trace the WMI Activity, and everything seems OK ; this tends to confirm that the problem lies in IIS Rights.

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• BIND9 / DNS Zone / Dedicated Server / Unique Reverse DNS

  - by user2832131

  I locate a dedicated server in a datacenter with no DNS Zone setup. Datacenter panel have 1 textfield only you can fill one Reverse DNS only. According with datacenter instructions here... [instructions]: http://www.wiki.hetzner.de/index.php/DNS-Reverse-DNS/en#How_can_I_assign_several_names_to_my_IP_address.2C_if_different_domains_are_hosted_on_my_server.3F How_can_I_assign_several_names_to_my_IP_address ...I need to install BIND9 in order to configure other records like CNAME and MX. Ok, I've installed BIND9, created a Master Zone. And following this example, I put it in the Zone File: [example]: http://wiki.hetzner.de/index.php/DNS_Zonendatei/en example $ttl 86400 @ IN SOA ns1.first-ns.de. postmaster.robot.first-ns.de. ( 1383411730 14400 1800 604800 86400 ) @ IN NS ns1.first-ns.de. @ IN NS robotns2.second-ns.de. @ IN NS robotns3.second-ns.com. localhost IN A 127.0.0.1 @ IN A 144.86.786.651 www IN A 144.86.786.651 loopback IN CNAME localhost But when I point my domain to ns1.first-ns.de, DNS Register says "time out". Am I missing something? I created a Master zone. Should it be a Slave zone? named.conf: include "/etc/bind/named.conf.options"; include "/etc/bind/named.conf.local"; include "/etc/bind/named.conf.default-zones"; named.conf.options: options { directory "/var/cache/bind"; dnssec-validation auto; auth-nxdomain no; # conform to RFC1035 listen-on-v6 { any; }; }; named.conf.local: zone "mydomain.com" { type master; file "/var/lib/bind/mydomain.com.hosts"; allow-update {any;}; allow-transfer {any;}; allow-query {any;}; }; named.conf.default-zones: zone "." { type hint; file "/etc/bind/db.root"; }; zone "localhost" { type master; file "/etc/bind/db.local"; }; zone "127.in-addr.arpa" { type master; file "/etc/bind/db.127"; }; zone "0.in-addr.arpa" { type master; file "/etc/bind/db.0"; }; zone "255.in-addr.arpa" { type master; file "/etc/bind/db.255"; }; Problem is that I'm moving my site, and can't update the new NS server due to a 'timeout' message when filling new datacenter NS. I'm filling: MASTER: ns1.first-ns.de SLAVE1: robotns2.second-ns.de SLAVE2: robotns3.second-ns.com

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• Lighttpd 403 Errors on HTML and PHP pages

  - by Brian

  I installed lighttpd on CentOS 5.5 64-bit. Everything seems fine and running except I cannot get past 403 errors on both HTML and PHP pages. I have used CHMOD and CHOWN, changed ownership in the config file, done everything possible and have been stuck for 2 days. Appreciate any help, and here's hoping to a stupid error on my part. Here is the log file with debug options on: 2011-02-21 11:23:13: (request.c.304) fd: 7 request-len: 408 GET /index.html HTTP/1.1 Host: 10.0.1.8 User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive Cache-Control: max-age=0 2011-02-21 11:23:13: (response.c.241) run condition 2011-02-21 11:23:13: (response.c.300) -- splitting Request-URI 2011-02-21 11:23:13: (response.c.301) Request-URI : /index.html 2011-02-21 11:23:13: (response.c.302) URI-scheme : http 2011-02-21 11:23:13: (response.c.303) URI-authority: 10.0.1.8 2011-02-21 11:23:13: (response.c.304) URI-path : /index.html 2011-02-21 11:23:13: (response.c.305) URI-query : 2011-02-21 11:23:13: (response.c.349) -- sanatising URI 2011-02-21 11:23:13: (response.c.350) URI-path : /index.html 2011-02-21 11:23:13: (response.c.470) -- before doc_root 2011-02-21 11:23:13: (response.c.471) Doc-Root : /srv/www/lighttpd 2011-02-21 11:23:13: (response.c.472) Rel-Path : /index.html 2011-02-21 11:23:13: (response.c.473) Path : 2011-02-21 11:23:13: (response.c.521) -- after doc_root 2011-02-21 11:23:13: (response.c.522) Doc-Root : /srv/www/lighttpd 2011-02-21 11:23:13: (response.c.523) Rel-Path : /index.html 2011-02-21 11:23:13: (response.c.524) Path : /srv/www/lighttpd/index.html 2011-02-21 11:23:13: (response.c.541) -- logical -> physical 2011-02-21 11:23:13: (response.c.542) Doc-Root : /srv/www/lighttpd 2011-02-21 11:23:13: (response.c.543) Rel-Path : /index.html 2011-02-21 11:23:13: (response.c.544) Path : /srv/www/lighttpd/index.html 2011-02-21 11:23:13: (response.c.561) -- handling physical path 2011-02-21 11:23:13: (response.c.562) Path : /srv/www/lighttpd/index.html 2011-02-21 11:23:13: (response.c.608) -- access denied 2011-02-21 11:23:13: (response.c.609) Path : /srv/www/lighttpd/index.html 2011-02-21 11:23:13: (response.c.128) Response-Header: HTTP/1.1 403 Forbidden Content-Type: text/html Content-Length: 345 Date: Mon, 21 Feb 2011 16:23:13 GMT Server: lighttpd/1.4.28 Here is the directory listing. I used CHOWN to set to lighttpd:lighttpd [root@localhost lighttpd]# ls -al total 40 drwxrwxrwx 2 lighttpd lighttpd 4096 Feb 21 10:48 . drwxrwxrwx 3 lighttpd lighttpd 4096 Feb 21 10:57 .. -rwxrwxrwx 1 lighttpd lighttpd 10 Feb 20 08:32 index.html -rwxrwxrwx 1 lighttpd lighttpd 20 Feb 21 10:48 index.php -rwxrwxrwx 1 lighttpd lighttpd 20 Feb 21 10:39 info.php [root@localhost lighttpd]# Requested Commands: [root@localhost lighttpd]# ls -ld / /srv /srv/www drwxr-xr-x 22 root root 4096 Feb 21 04:39 / drwxrwxrwx 3 lighttpd lighttpd 4096 Feb 20 07:38 /srv drwxrwxrwx 3 lighttpd lighttpd 4096 Feb 21 10:57 /srv/www [root@localhost lighttpd]# ps auxZ | grep lighttpd root:system_r:httpd_t lighttpd 3842 0.0 0.2 48368 896 ? S 12:24 0:00 /usr/sbin/lighttpd -f /etc/lighttpd/lighttpd.conf root:system_r:unconfined_t:SystemLow-SystemHigh root 3845 0.0 0.2 61152 764 pts/0 R+ 12:24 0:00 grep lighttpd

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• Migrate from MySQL to PostgreSQL on Linux (Kubuntu)

  - by Dave Jarvis

  Storyline Trying to migrate a database from MySQL to PostgreSQL. All the documentation I have read covers, in great detail, how to migrate the structure. I have found very little documentation on migrating the data. The schema has 13 tables (which have been migrated successfully) and 9 GB of data. MySQL version: 5.1.x PostgreSQL version: 8.4.x I want to use the R programming language to analyze the data using SQL select statements; PostgreSQL has PL/R, but MySQL has nothing (as far as I can tell). A long time ago in a galaxy far, far away... Create the database location (/var has insufficient space; also dislike having the PostgreSQL version number everywhere -- upgrading would break scripts!): sudo mkdir -p /home/postgres/main sudo cp -Rp /var/lib/postgresql/8.4/main /home/postgres sudo chown -R postgres.postgres /home/postgres sudo chmod -R 700 /home/postgres sudo usermod -d /home/postgres/ postgres All good to here. Next, restart the server and configure the database using these installation instructions: sudo apt-get install postgresql pgadmin3 sudo /etc/init.d/postgresql-8.4 stop sudo vi /etc/postgresql/8.4/main/postgresql.conf Change data_directory to /home/postgres/main sudo /etc/init.d/postgresql-8.4 start sudo -u postgres psql postgres \password postgres sudo -u postgres createdb climate pgadmin3 Use pgadmin3 to configure the database and create a schema. A New Hope The episode began in a remote shell known as bash, with both databases running, and the installation of a command with a most unusual logo: SQL Fairy. perl Makefile.PL sudo make install sudo apt-get install perl-doc (strangely, it is not called perldoc) perldoc SQL::Translator::Manual Extract a PostgreSQL-friendly DDL and all the MySQL data: sqlt -f DBI --dsn dbi:mysql:climate --db-user user --db-password password -t PostgreSQL > climate-pg-ddl.sql mysqldump --skip-add-locks --complete-insert --no-create-db --no-create-info --quick --result-file="climate-my.sql" --databases climate --skip-comments -u root -p The Database Strikes Back Recreate the structure in PostgreSQL as follows: pgadmin3 (switch to it) Click the Execute arbitrary SQL queries icon Open climate-pg-ddl.sql Search for TABLE " replace with TABLE climate." (insert the schema name climate) Search for on " replace with on climate." (insert the schema name climate) Press F5 to execute This results in: Query returned successfully with no result in 122 ms. Replies of the Jedi At this point I am stumped. Where do I go from here (what are the steps) to convert climate-my.sql to climate-pg.sql so that they can be executed against PostgreSQL? How to I make sure the indexes are copied over correctly (to maintain referential integrity; I don't have constraints at the moment to ease the transition)? How do I ensure that adding new rows in PostgreSQL will start enumerating from the index of the last row inserted (and not conflict with an existing primary key from the sequence)? Resources A fair bit of information was needed to get this far: https://help.ubuntu.com/community/PostgreSQL http://articles.sitepoint.com/article/site-mysql-postgresql-1 http://wiki.postgresql.org/wiki/Converting_from_other_Databases_to_PostgreSQL#MySQL http://pgfoundry.org/frs/shownotes.php?release_id=810 http://sqlfairy.sourceforge.net/ Thank you!

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• dns queries not using nscd for caching

  - by xenoterracide

  I'm trying to use nscd (Nameservices Cache Daemon) to cache dns locally so I can stop using bind to do it. I've gotten it started and ntpd seems to attempt to use it. But everything else for hosts seems to ignore it. e.g if I do dig apache.org 3 times none of them will hit the cache. I'm viewing the cache stats using nscd -g to determine whether it's been used. I've also turned the debug log level up to see if I can see it hitting and the queries don't even hit nscd. nsswitch.conf # Begin /etc/nsswitch.conf passwd: files group: files shadow: files publickey: files hosts: cache files dns networks: files protocols: files services: files ethers: files rpc: files netgroup: files # End /etc/nsswitch.confenter code here nscd.conf # # /etc/nscd.conf # # An example Name Service Cache config file. This file is needed by nscd. # # Legal entries are: # # logfile <file> # debug-level <level> # threads <initial #threads to use> # max-threads <maximum #threads to use> # server-user <user to run server as instead of root> # server-user is ignored if nscd is started with -S parameters # stat-user <user who is allowed to request statistics> # reload-count unlimited|<number> # paranoia <yes|no> # restart-interval <time in seconds> # # enable-cache <service> <yes|no> # positive-time-to-live <service> <time in seconds> # negative-time-to-live <service> <time in seconds> # suggested-size <service> <prime number> # check-files <service> <yes|no> # persistent <service> <yes|no> # shared <service> <yes|no> # max-db-size <service> <number bytes> # auto-propagate <service> <yes|no> # # Currently supported cache names (services): passwd, group, hosts, services # logfile /var/log/nscd.log threads 4 max-threads 32 server-user nobody # stat-user somebody debug-level 9 # reload-count 5 paranoia no # restart-interval 3600 enable-cache passwd yes positive-time-to-live passwd 600 negative-time-to-live passwd 20 suggested-size passwd 211 check-files passwd yes persistent passwd yes shared passwd yes max-db-size passwd 33554432 auto-propagate passwd yes enable-cache group yes positive-time-to-live group 3600 negative-time-to-live group 60 suggested-size group 211 check-files group yes persistent group yes shared group yes max-db-size group 33554432 auto-propagate group yes enable-cache hosts yes positive-time-to-live hosts 3600 negative-time-to-live hosts 20 suggested-size hosts 211 check-files hosts yes persistent hosts yes shared hosts yes max-db-size hosts 33554432 enable-cache services yes positive-time-to-live services 28800 negative-time-to-live services 20 suggested-size services 211 check-files services yes persistent services yes shared services yes max-db-size services 33554432 resolv.conf # Generated by dhcpcd from eth0 nameserver 127.0.0.1 domain westell.com nameserver 192.168.1.1 nameserver 208.67.222.222 nameserver 208.67.220.220 as kind of a side note I'm using archlinux.

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• NetBackup with VSS and Instant Recovery - Failing to delete old snapshots

  - by Jonathan Bourke

  We are attempting to implement Microsoft VSS for snap-shotting in our NetBackup 6.5.3.1 environment. The clients are both 32 & 64 bit Windows 2003 Server. Snapshot parameters are: Instant recovery is enabled Maximum snapshots = 1 Provider type = 1 (System) Snapshot attribute = 1 (Differential) All backups successfully complete, and VSS shadows are successfully created both for the snapshot backup and for the open files (shadow copy components). The Issue: NetBackup is not clearing or overwriting old snapshots with each successive backup. When we list shadows, and shadow storage, it is increasing and increasing. IT is not honouring the Maximum Snapshot setting. The Logs: The bpfis log doesn’t really appear to show any errors other than for methods which we are not employing (VxVM, Flashsnap, etc.). A section is as follows: 11:54:10.744 [348.4724] <2> logparams: D:\Program Files\Veritas\NetBackup\bin\bpfis.exe delete -nbu -id htpststr001.san.mgmt.det_1248918143 -bpstart_to 300 -bpend_to 300 -clnt htpststr001.san.mgmt.det 11:54:10.744 [348.4724] <4> bpfis: INF - BACKUP START 348 11:54:11.713 [348.4724] <8> onlfi_initialize_vfms: VfMS error 10; see following messages: 11:54:11.713 [348.4724] <8> onlfi_initialize_vfms: Non-fatal method error was reported 11:54:11.713 [348.4724] <8> onlfi_initialize_vfms: vfm_configure_fi_one: method: FlashSnap, type: FIM, function: FlashSnap_init 11:54:11.713 [348.4724] <8> onlfi_initialize_vfms: VfMS method error 3; see following message: 11:54:11.713 [348.4724] <8> onlfi_initialize_vfms: FlashSnap_init: Veritas Volume Manager not installed. 11:54:11.713 [348.4724] <8> onlfi_initialize_vfms: VfMS error 10; see following messages: 11:54:11.713 [348.4724] <8> onlfi_initialize_vfms: Non-fatal method error was reported 11:54:11.713 [348.4724] <8> onlfi_initialize_vfms: vfm_configure_fi_one: method: vxvm, type: FIM, function: vxvm_init 11:54:11.713 [348.4724] <8> onlfi_initialize_vfms: VfMS method error 3; see following message: 11:54:11.713 [348.4724] <8> onlfi_initialize_vfms: vxvm_init: Veritas Volume Manager not installed. 11:54:11.713 [348.4724] <4> onlfi_thaw: Thawing C:\ using snapshot method VSS. 11:54:11.713 [348.4724] <2> onlfi_vfms_logf: vfm_thaw: delete snapshot ... 11:54:11.744 [348.4724] <2> onlfi_vfms_logf: snapshot services: emcclariionfi:Thu Jul 30 2009 11:54:11.744000 <Thread id - 4724> Unable to import any login credentials for any appliances. 11:54:11.760 [348.4724] <2> onlfi_vfms_logf: snapshot services: hpevafi:Thu Jul 30 2009 11:54:11.760000 <Thread id - 4724> CHpEvaPlugin::init: CLI tool is not installed. 11:54:11.760 [348.4724] <2> onlfi_vfms_logf: snapshot services: hpmsafi:Thu Jul 30 2009 11:54:11.760000 <Thread id - 4724> No array mangement credentials are available in configuration file. 11:54:13.806 [348.4724] <4> onlfi_thaw: do_thaw return value: 0 11:54:13.806 [348.4724] <4> onlfi_thaw: Thawing D:\ using snapshot method VSS. 11:54:15.806 [348.4724] <4> onlfi_thaw: do_thaw return value: 0 11:54:19.806 [348.4724] <2> fis_delete_id: removing D:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.htpststr001.san.mgmt.det_1248918143.0 11:54:19.806 [348.4724] <2> fis_delete_id: removing D:\Program Files\Veritas\NetBackup\online_util\fi_cntl\bpfis.fim.htpststr001.san.mgmt.det_1248918143.0.fiid 11:54:19.853 [348.4724] <4> bpfis: INF - EXIT STATUS 0: the requested operation was successfully completed The Question: Has anyone any experience of NetBackup / VSS not clearing snapshots after backups? We will ultimately be using a HP EVA for the snapshots, but we want to ensure correct functioning at a VSS level before we go further. Regards, Jonathan (PS: Question previously posted by my colleague on entsupport.symantec.com)

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• What is the difference between Anycast and GeoDNS / GeoIP wrt HA?

  - by Riyad

  Based on the Wikipedia description of Anycast, it includes both the distribution of a domain-name-to-many-IP-mapping across many DNS servers as well as replying to clients with the most geographically close (or fastest) server. In the context of a globally distributed, highly available site like google.com (or any CDN service with many global edge locations) this sounds like the two key features one would need. DNS services like Amazon's Route53, EasyDNS and DNSMadeEasy all advertise themselves as Anycast-enabled networks. Therefore my assumption is that each of these DNS services transparently offer me those two killer features: multi-IP-to-domain mapping AND routing clients to the closest node. However, each of these services seem to separate out these two functionalities, referring to the 2nd one (routing clients to closest node) as "GeoDNS", "GeoIP" or "Global Traffic Director" and charge extra for the service. If a core tenant of an Anycast-capable system is to already do this, why is this functionality being earmarked as this extra feature? What is this "GeoDNS" feature doing that a standard Anycast DNS service won't do (according to the definition of Anycast from Wikipedia -- I understand what is being advertised, just not why it isn't implied already). I get extra-confused when a DNS service like Route53 that doesn't support this nebulous "GeoDNS" feature lists functionality like: Fast – Using a global anycast network of DNS servers around the world, Route 53 is designed to automatically route your users to the optimal location depending on network conditions. As a result, the service offers low query latency for your end users, as well as low update latency for your DNS record management needs. ... which sounds exactly like what GeoDNS is intended to do, but geographically directing clients is something they explicitly don't support it yet. Ultimately I am looking for the two following features from a DNS provider: Map multiple IP addresses to a single domain name (like google.com, amazon.com, etc. does) Utilize a DNS service that will respond to client requests for that domain with the IP address of the nearest server to the requestee. As mentioned, it seems like this is all part of an "Anycast" DNS service (all of which these services are), but the features and marketing I see from them suggest otherwise, making me think I need to learn a bit more about how DNS works before making a deployment choice. Thanks in advance for any clarifications.

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• Setup MSSQL replication with peer to peer topology: problem setting up Conflict Detection

  - by Roel

  Hi, I'm setting up a SQL Replication strategy, using MSSQL2008 with peer-to-peer publications (2 servers, each one subscribes to the other). I followed this HOWTO from MSDN, and the setup seems to be working fine: add a record to one table on server A, query on server B shows the new record. So far, so good. So far I only have one table 'Templates': Id PK (calculated field) NodeId int default 1/2 (Server A = 1, Server B = 2) LocalId int autoid Name nvarchar(100) Now, I would like to enable 'Conflict detection', which should be enabled by default. But every time I try to save the 'Conflict Detection' feature in the Publication Properties I get the following error: Cannot save Peer conflict detection properties. An exception occurred while executing a Transact-SQL statement or batch.(Microsoft.SqlServer.ConnectionInfo) Program Location: at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery(String sqlCommand, ExecutionTypes executionType) at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery(String sqlCommand) at Microsoft.SqlServer.Replication.ReplicationObject.ExecCommand(String commandIn) at Microsoft.SqlServer.Replication.TransPublication.SetPeerConflictDetection(Boolean enablePeerConflictDetection, Int32 peerOriginatorID) at Microsoft.SqlServer.Management.UI.PubPropSubscriptionOptions.SaveP2PConflictDetection() at Microsoft.SqlServer.Management.UI.PubPropSubscriptionOptions.SaveProperties(ExecutionMode& executionResult) Column name 'Id' does not exist in the target table or view. Changed database context to 'TestDB'. (.Net SqlClient Data Provider) For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=10.00.2531&EvtSrc=MSSQLServer&EvtID=1911&LinkId=20476 Server Name: SERVER_A Error Number: 1911 Severity: 16 State: 1 Line Number: 2 Program Location: at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async) at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe) at System.Data.SqlClient.SqlCommand.ExecuteNonQuery() at Microsoft.SqlServer.Management.Common.ServerConnection.ExecuteNonQuery(String sqlCommand, ExecutionTypes executionType) Now, I googled the hell out of this error, and nothing shows up. I also can't seem to find out what the exact target table of the error "Column name 'Id' does not exist..." is. Has anyone every done this successfully? Am I missing something? Having this setup without conflict detection feels pretty useless... EDIT OK, so after some more research and setting up with different databases etc, I found out that the calculated 'Id' column of the Templates table is the culprit. I don't know why, but the replication doesn't seem to allow calculated columns (which are also primary key). It works now too, without the 'Id' column, and using the NodeId and LocalId as a combined PK. So now the question is, why isn't it allowed to have a calculated column as PK for replication with conflict detection?

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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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• APC UPS replace battery light and apcupsd reporting "replace battery"

  - by mgjk

  We have an APC Smart UPS 1500. The "Replace Battery" light is on, and apcupsd reports: Emergency! Batteries have failed on UPS xxxx. Change them NOW However, from this article, http://sturgeon.apcc.com/kbasewb2.nsf/for+external/f39c4312fcaf7b948525679a005ebb78?OpenDocument it seems that it's not so clear that the UPS battery needs to be replaced. Stranger, according to the information on the UPS, an 11 minute runtime at 42.9% load running at 27.7V isn't so bad. Any thoughts about what to try next? We're a non-profit, money is an object. It would be a shame to replace a battery with a year or so left in it. # apcaccess status APC : 001,041,1017 DATE : Thu Mar 29 13:01:41 EDT 2012 HOSTNAME : oreilly2 VERSION : 3.14.6 (16 May 2009) debian UPSNAME : xxxx CABLE : Custom Cable Smart MODEL : Smart-UPS 1500 UPSMODE : Stand Alone STARTTIME: Thu Mar 29 12:57:30 EDT 2012 STATUS : ONLINE LINEV : 112.3 Volts LOADPCT : 42.9 Percent Load Capacity BCHARGE : 100.0 Percent TIMELEFT : 11.0 Minutes MBATTCHG : 5 Percent MINTIMEL : 3 Minutes MAXTIME : 0 Seconds OUTPUTV : 112.3 Volts SENSE : High DWAKE : -01 Seconds DSHUTD : 090 Seconds LOTRANS : 106.0 Volts HITRANS : 127.0 Volts RETPCT : 000.0 Percent ITEMP : 23.8 C Internal ALARMDEL : Always BATTV : 27.7 Volts LINEFREQ : 60.0 Hz LASTXFER : No transfers since turnon NUMXFERS : 0 TONBATT : 0 seconds CUMONBATT: 0 seconds XOFFBATT : N/A SELFTEST : NO STATFLAG : 0x07000008 Status Flag SERIALNO : AS0603298896 BATTDATE : 2006-01-14 NOMOUTV : 120 Volts NOMBATTV : 24.0 Volts FIRMWARE : 601.3.D USB FW:1.5 APCMODEL : Smart-UPS 1500 END APC : Thu Mar 29 13:02:12 EDT 2012 Error when running upstest You are using a SMART cable type, so I'm entering SMART test mode mode.type = USB_UPS Setting up the port ... Hello, this is the apcupsd Cable Test program. This part of apctest is for testing Smart UPSes. Please select the function you want to perform. 1) Query the UPS for all known values 2) Perform a Battery Runtime Calibration 3) Abort Battery Calibration 4) Monitor Battery Calibration progress 5) Program EEPROM 6) Enter TTY mode communicating with UPS 7) Quit Select function number: 2 First ensure that we have a good link and that the UPS is functionning normally. Simulating UPSlinkCheck ... YWrote: Y Got: getline failed. Apparently the link is not up. Giving up.

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• 502 Bad Gateway - nginx

  - by ADH2

  I am randomly receiving 502 Bad Gateway error pages - I can reproduce this issue by modifying hosting plans in plesk 11 and in the same time refreshing a page for a minute or two. When I get the 502 error page all I have to do is refresh the browser and the page refreshes properly. i am using centos 6 this it from todays log (/var/log/nginx/error.log): 2012/12/04 10:52:07 [error] 21272#0: *545 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 82.77.68.111, server: likeit-craiova.ro, request: "GET / HTTP/1.1", upstream: "http://195.254.135.113:7080/", host: "likeit-craiova.ro" this is the nginx config (/etc/nginx/nginx.conf) #user nginx; worker_processes 1; #error_log /var/log/nginx/error.log; #error_log /var/log/nginx/error.log notice; #error_log /var/log/nginx/error.log info; #pid /var/run/nginx.pid; events { worker_connections 1024; } http { include mime.types; default_type application/octet-stream; proxy_buffer_size 128k; proxy_buffers 4 256k; proxy_busy_buffers_size 256k; #log_format main '$remote_addr - $remote_user [$time_local] "$request" ' # '$status $body_bytes_sent "$http_referer" ' # '"$http_user_agent" "$http_x_forwarded_for"'; #access_log /var/log/nginx/access.log main; sendfile on; #tcp_nopush on; #keepalive_timeout 0; keepalive_timeout 65; #tcp_nodelay on; #gzip on; #gzip_disable "MSIE [1-6]\.(?!.*SV1)"; server_tokens off; include /etc/nginx/conf.d/*.conf; } fastcgi config file (/etc/nginx/fastcgi.conf): fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param QUERY_STRING $query_string; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_param SCRIPT_NAME $fastcgi_script_name; fastcgi_param REQUEST_URI $request_uri; fastcgi_param DOCUMENT_URI $document_uri; fastcgi_param DOCUMENT_ROOT $document_root; fastcgi_param SERVER_PROTOCOL $server_protocol; fastcgi_param HTTPS $https if_not_empty; fastcgi_param GATEWAY_INTERFACE CGI/1.1; fastcgi_param SERVER_SOFTWARE nginx/$nginx_version; fastcgi_param REMOTE_ADDR $remote_addr; fastcgi_param REMOTE_PORT $remote_port; fastcgi_param SERVER_ADDR $server_addr; fastcgi_param SERVER_PORT $server_port; fastcgi_param SERVER_NAME $server_name; # PHP only, required if PHP was built with --enable-force-cgi-redirect fastcgi_param REDIRECT_STATUS 200; fastcgi parameters config (/etc/nginx/fastcgi_params): fastcgi_param QUERY_STRING $query_string; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_param SCRIPT_NAME $fastcgi_script_name; fastcgi_param REQUEST_URI $request_uri; fastcgi_param DOCUMENT_URI $document_uri; fastcgi_param DOCUMENT_ROOT $document_root; fastcgi_param SERVER_PROTOCOL $server_protocol; fastcgi_param HTTPS $https if_not_empty; fastcgi_param GATEWAY_INTERFACE CGI/1.1; fastcgi_param SERVER_SOFTWARE nginx/$nginx_version; fastcgi_param REMOTE_ADDR $remote_addr; fastcgi_param REMOTE_PORT $remote_port; fastcgi_param SERVER_ADDR $server_addr; fastcgi_param SERVER_PORT $server_port; fastcgi_param SERVER_NAME $server_name; # PHP only, required if PHP was built with --enable-force-cgi-redirect fastcgi_param REDIRECT_STATUS 200; alsow i'm getting this on a shared hosting server, on one of the domains: Unable to generate the web server configuration file on the host because of the following errors: nginx: [warn] duplicate MIME type "text/html" in /etc/nginx/nginx.conf:45 nginx: [emerg] open() "/var/www/vhosts/partydayandnight.ro/statistics/logs/proxy_access_log" failed (24: Too many open files) nginx: configuration file /etc/nginx/nginx.conf test failed Please resolve the errors in web server configuration templates and generate the file again. why is this appearing and what troubles may it cause? what can i do to get this errors fixed? thank you!

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• Rotate screen using xrandr on Solaris 10

  - by sixtyfootersdude

  How do I call the xrandr command? I want to rotate my screen 90 deg. clockwise. Here is the usage: % xrandr -help usage: xrandr [options] where options are: -display <display> or -d <display> -help -o <normal,inverted,left,right,0,1,2,3> or --orientation <normal,inverted,left,right,0,1,2,3> -q or --query -s <size>/<width>x<height> or --size <size>/<width>x<height> -r <rate> or --rate <rate> or --refresh <rate> -v or --version -x (reflect in x) -y (reflect in y) --screen <screen> --verbose --dryrun --prop or --properties --fb <width>x<height> --fbmm <width>x<height> --dpi <dpi>/<output> --output <output> --auto --mode <mode> --preferred --pos <x>x<y> --rate <rate> or --refresh <rate> --reflect normal,x,y,xy --rotate normal,inverted,left,right --left-of <output> --right-of <output> --above <output> --below <output> --same-as <output> --set <property> <value> --off --crtc <crtc> --newmode <name> <clock MHz> <hdisp> <hsync-start> <hsync-end> <htotal> <vdisp> <vsync-start> <vsync-end> <vtotal> [+HSync] [-HSync] [+VSync] [-VSync] --rmmode <name> --addmode <output> <name> --delmode <output> <name> This is what I tried: % xrandr -o left X Error of failed request: BadMatch (invalid parameter attributes) Major opcode of failed request: 159 (RANDR) Minor opcode of failed request: 2 () Serial number of failed request: 16 Current serial number in output stream: 16 I am running Solaris 10.

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• Graphite SQLite3 DatabaseError: attempt to write a readonly database

  - by Anadi Misra

  Running graphite under apache httpd, with slqite database, I have the correct folder permissions [root@liaan55 httpd]# ls -ltr /var/lib | grep graphite drwxr-xr-x. 2 apache apache 4096 Aug 23 19:36 graphite-web and [root@liaan55 httpd]# ls -ltr /var/lib/graphite-web/ total 68 -rw-r--r--. 1 apache apache 65536 Aug 23 19:46 graphite.db syncdb also seems to have gone fine [root@liaan55 httpd]# sudo -su apache bash-4.1$ whoami apache bash-4.1$ python /usr/lib/python2.6/site-packages/graphite/manage.py syncdb /usr/lib/python2.6/site-packages/graphite/settings.py:231: UserWarning: SECRET_KEY is set to an unsafe default. This should be set in local_settings.py for better security warn('SECRET_KEY is set to an unsafe default. This should be set in local_settings.py for better security') /usr/lib/python2.6/site-packages/django/conf/__init__.py:75: DeprecationWarning: The ADMIN_MEDIA_PREFIX setting has been removed; use STATIC_URL instead. "use STATIC_URL instead.", DeprecationWarning) /usr/lib/python2.6/site-packages/django/core/cache/__init__.py:82: DeprecationWarning: settings.CACHE_* is deprecated; use settings.CACHES instead. DeprecationWarning Creating tables ... Creating table account_profile Creating table account_variable Creating table account_view Creating table account_window Creating table account_mygraph Creating table dashboard_dashboard_owners Creating table dashboard_dashboard Creating table events_event Creating table auth_permission Creating table auth_group_permissions Creating table auth_group Creating table auth_user_user_permissions Creating table auth_user_groups Creating table auth_user Creating table django_session Creating table django_admin_log Creating table django_content_type Creating table tagging_tag Creating table tagging_taggeditem You just installed Django's auth system, which means you don't have any superusers defined. Would you like to create one now? (yes/no): yes Username (leave blank to use 'apache'): root E-mail address: [email protected] Password: Password (again): Superuser created successfully. Installing custom SQL ... Installing indexes ... Installed 0 object(s) from 0 fixture(s) bash-4.1$ exit and the local-settings.py file is as follows STORAGE_DIR = '/var/lib/graphite-web' INDEX_FILE = '/var/lib/graphite-web/index' DATABASES = { 'default': { 'NAME': '/var/lib/graphite-web/graphite.db', 'ENGINE': 'django.db.backends.sqlite3', 'USER': '', 'PASSWORD': '', 'HOST': '', 'PORT': '' } } I still get this error [Sat Aug 23 19:47:17 2014] [error] [client 10.42.33.238] File "/usr/lib/python2.6/site-packages/django/db/backends/sqlite3/base.py", line 344, in execute [Sat Aug 23 19:47:17 2014] [error] [client 10.42.33.238] return Database.Cursor.execute(self, query, params) [Sat Aug 23 19:47:17 2014] [error] [client 10.42.33.238] DatabaseError: attempt to write a readonly database not sure what is missing in this configuration

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• Integrating HP Systems Insight Manager into an existing environment

  - by ewwhite

  I'm working with an environment that spans multiple data centers/sites and consists primarily of HP ProLiant servers (G5-G7) running Linux. The mix is 30% RHEL/CentOS, the rest are Gentoo :(. I also have a few dozen virtual machines running back-office and Windows servers on VMWare ESX hosts. I run OpenNMS to pull SNMP data from the various server nodes and networking devices. While OpenNMS works wonderfully for up/down, thresholds and notifications, it's native handling of traps is a little rough and the graphs are not particularly pretty. I use Orca/RRD graphs for performance trending and nice graphs. I'm tasked with inventorying the environment and wanted to come up with a clean way to organize server information. Since my environment is mostly HP, I've been playing with HP Systems Insight Manager as a way to extract server data and to deploy HP health/monitoring packages and firmware. The Gentoo systems eventually have to be converted to CentOS, so getting a quick assessment of what hardware is where would be great. Although I've read through a few hundred pages of HP manuals, I'm having a difficult time understanding how to get HP SIM to do what I want, though. My main problems are: I have about 40 subnets to deal with; 98% connected with private lines to facilities across the globe. I don't want to initiate an HP SIM discovery only to pull back every piece of intermediate networking hardware and equipment from all of the locations. I'd like this to focus on the servers. I have OpenNMS configured to accept traps. I don't want HP SIM to duplicate that effort. It seems like the built-in software deployment tool wants to overwrite the trapsink parameters for the systems it encounters during discovery. I have about 10 administrative username/password combinations in use across this infrastructure. Is there a more efficient way to get HP SIM to do the discovery or break discovery into manageable chunks? In terms of general workflow, do people typically install the HP Management Agents during the initial OS deployment (e.g. kickstart post script) or afterwards from HP SIM? Is HP SIM too thick/fat to be an inventory tool? I can't tell if it's meant to be used standalone or alongside other monitoring products. Since the majority of the systems I'm trying to track are those running Gentoo (in order to plan the move to CentOS), is there any way for HP SIM to extract system model information from them ( like dmidecode)? I have systems here where I may have an SSH key established, but not direct user or login access. Is there a way for me to import an SSH private/public key pair into HP SIM to reach out to the servers that can't accept standard credentials? There are a handful of sites where I have inconsistent access or have a double-NAT situation. I may be able to poke a server, but it may not be able to find its way back to the management system. Is there a workaround for this? The certificate configuration for HP SIM seems complicated. What is the preferred setup for trust between systems? I'd also appreciate any notes or recommendations to using this product. Or if there's a better way to do this, I'd like to know.

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• Apache not booting, no error messages

  - by EricR

  Apache isn't booting on our production server (all of a sudden) and there are no error messages. Can anyone help me fix this or help me start debugging? init.d fails: /etc/init.d/httpd restart Stopping httpd: [FAILED] Starting httpd: [FAILED] Configtest Syntax OK Apache: Server version: Apache/2.2.3 Server built: Nov 12 2012 08:48:46 Server: CentOS release 5.8 (Final) Booting with debug: /usr/sbin/httpd -e debug -X [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module auth_basic_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module auth_digest_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authn_file_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authn_alias_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authn_anon_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authn_dbm_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authn_default_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authz_host_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authz_user_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authz_owner_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authz_groupfile_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authz_dbm_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authz_default_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module ldap_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module authnz_ldap_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module include_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module log_config_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module logio_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module env_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module ext_filter_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module mime_magic_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module expires_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module deflate_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module headers_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module usertrack_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module setenvif_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module mime_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module dav_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module status_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module autoindex_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module info_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module dav_fs_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module vhost_alias_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module negotiation_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module dir_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module actions_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module speling_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module userdir_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module alias_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module rewrite_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module proxy_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module proxy_balancer_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module proxy_ftp_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module proxy_http_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module proxy_connect_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module cache_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module suexec_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module disk_cache_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module file_cache_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module mem_cache_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module cgi_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module version_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module ssl_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module perl_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module php5_module [Sun Dec 16 20:10:16 2012] [debug] mod_so.c(246): loaded module proxy_ajp_module <At this point it exits> /var/log/httpd/error_log [Sun Dec 16 20:10:16 2012] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec) [Sun Dec 16 20:10:16 2012] [info] Init: Seeding PRNG with 256 bytes of entropy [Sun Dec 16 20:10:16 2012] [info] Init: Generating temporary RSA private keys (512/1024 bits) [Sun Dec 16 20:10:16 2012] [info] Init: Generating temporary DH parameters (512/1024 bits) [Sun Dec 16 20:10:16 2012] [info] Init: Initializing (virtual) servers for SSL

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• I want to change DPI with Imagemagick without changing the actual byte-size of the image data

  - by user1694803

  I feel so horribly sorry that I have to ask this question here, but after hours of researching how to do an actually very simple task I'm still failing... In Gimp there is a very simple way to do what I want. I only have the German dialog installed but I'll try to translate it. I'm talking about going to "Picture-PrintingSize" and then adjusting the Values "X-Resolution" and "Y-Resolution" which are known to me as so called DPI values. You can also choose the format which by default is "Pixel/Inch". (In German the dialog is "Bild-Druckgröße" and there "X-Auflösung" and "Y-Auflösung") Ok, the values there are often "72" by default. When I change them to e.g. "300" this has the effect that the image stays the same on the computer, but if I print it, it will be smaller if you look at it, but all the details are still there, just smaller - it has a higher resolution on the printed paper (but smaller size... which is fine for me). I am often doing that when I am working with LaTeX, or to be exact with the command "pdflatex" on a recent Ubuntu-Machine. When I'm doing the above process with Gimp manually everything works just fine. The images will appear smaller in the resulting PDF but with high printing quality. What I am trying to do is to automate the process of going into Gimp and adjusting the DPI values. Since Imagemagick is known to be superb and I used it for many other tasks I tried to achieve my goal with this tool. But it does just not do what I want. After trying a lot of things I think this actually is be the command that should be my friend: convert input.png -density 300 output.png This should set the DPI to 300, as I can read everywhere in the web. It seems to work. When I check the file it stays the same. file input.png output.png input.png: PNG image data, 611 x 453, 8-bit grayscale, non-interlaced output.png: PNG image data, 611 x 453, 8-bit grayscale, non-interlaced When I use this command, it seems like it did what I wanted: identify -verbose output.png | grep 300 Resolution: 300x300 PNG:pHYs : x_res=300, y_res=300, units=0 (Funny enough, the same output comes for input.png which confuses me... so this might be the wrong parameters to watch?) But when I now render my TeX with "pdflatex" the image is still big and blurry. Also when I open the image with Gimp again the DPI values are set to "72" instead of "300". So there actually was no effect at all. Now what is the problem here. Am I getting something completely wrong? I can't be that wrong since everything works just fine with Gimp... Thanks for any help in this. I am also open to other automated solutions which are easily done on a Linux system...

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