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• Routing based on source address in Windows Server 2008 R2

  - by rocku

  Hi, I'm implementing a direct routing load balanced solution using Windows Server 2008 R2 as back-end server. I've configured a loopback interface with the external IP address. This works, I am receiving packets with the external IP address and respond to them appropriately. However our infrastructure requires that traffic which is being load-balanced should go through a different gateway then any other traffic originating from the server, ie. updates etc. So basicly I need to route packets based on source address (external IP) to another gateway. The built-in Windows 'route' command allows routing based on destination address only. I've tried setting a default gateway on the loopback interface and mangled with weak/strong host send/receive parameters on the interfaces, however this didn't work. Is there any way around this, possibly using third party tools?

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• (Apache) RedirectMatch regex to match all directories except those in my list

  - by dotben

  I need to 301 redirect all requests coming in for requests to http//server.com to be redirected to http//newserver.com unless the request is for an arbitary list of directories we are maintaining on the legacy server (eg server.com/foo or server.com/bar) I'm having a hard time working out how best to set this up and the regexs. EG, I need: http//server.com/page1 redirect to http//newserver.com/page1 http//server.com/dir1/page2 redirect to http//newserver.com/dir1/page2 http//server.com/foo to load as normal http//server.com/bar/baz.html to load as normal ... because 'foo' and 'bar' are in my list of legacy dirs. I'm wondering if the way to do this is to some how catch the matches in my list and then redirect anything else as a wildcard over to the new server -- but I can't make it work. Can anyone help me with some regex and rewrites for those please? Thanks (apologies for fudging the http:// in the urls, ServerFault thinks I'm posting hyperlinks and won't otherwise let me post this)

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• Improving terminal server performance for a specfic app

  - by Matt

  We have a windows 2003 terminal server running 2X application load balancign that is hosting a client's application that is accessed by around 50 users. Each user has there own database. The database is a file based database. The application is developed under Delphi so I think the database may be BDE based. As you can imagine, there is probably quite a lot of disk i/o. Here are some of the perfmon settings. Logged in users (average) 20 - 25 CPU Utilization (average) 80 - 100% Disk Queue Length (average) 1.6 % Disk time (average) 111 Page faults/sec (average) 1400 The application takes on average about a minute to load up. As usual, the budget is tight. Is there basic windows performance tuning tips that people can recommend to improve things before we fork out on more RAM etc. Server is a 2.8GHz Xeon with 3GB of RAM.

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• Access .accdb format’s

  - by wisecarver

  Were you aware there are two versions of the Access .accdb file format? The 2007 “ACE” version and the 2010 “ACE” version both use different drivers. If you’ve tried to use the Access Database .accdb format on DiscountASP.NET servers and it failed you must have been using a Data file created with the 2010 version of Access. OK, you’re shouting at me right now for even suggesting Access Databases for Shared hosting, right? I agree, SQL Server is the way to go and I personally help a lot of developers...(read more)

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• Grub not showing on startup for Windows 8.1 Ubuntu 13.10 Dual boot

  - by driftking96

  K im so a newbie to Ubuntu and i bought a Windows 8 pre-installed laptop last month. I updated to Windows 8.1 and then i thought about installing Ubuntu as a dual boot so i could mess around and learn more about it. So i followed a Youtube tutorial ( http://www.youtube.com/watch?v=dJfTvkgLqfQ ). And i got my stuff working fine. The first few times i booted i got the GRUB menu instead of my default HP Boot OS Manager, and i was able to select my OS. So i went to sleep and the next day i turned on my computer and the GRUB menu did not show up. I tried several times and it didnt automatically show up. In order for me to see the GRUB menu i had to turn on my PC and on start had to press ESC to pause startup and press F9 to get boot options. Then from there i had to pick from OS Boot, Ubuntu, Ubuntu (Yes there were two Ubuntus available) and a default EFI file thingy. When i click the first Ubuntu i get the GRUB Menu (I was too scared to try the second incase i screwed my laptop up) and i can safely load Ubuntu from there and use it (although i do have to increase my brightness everytime i load Ubuntu bec it somehow reduces my brightness to complete darkness on boot) So my problem here is why isnt my GRUB showing on boot, after it worked on the first day? I was on Windows 8.1 while typing this and if you have any questions or answers, i will happily answer or use them as a solution to the best of my abilities. BTW my laptop is a HP TouchSmart j-078CA.

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• Rails3 environment running very slow on Windows XP, Ubuntu 9.04, Ubuntu 9.10

  - by bergyman

  I've tried all three (granted the Ubuntu versions were via VirtualBox with XP as a host, but I gave the images all the available RAM my system has). Loading the rails environment is taking 30-60 seconds. rails console, rake test:units - anything that requires rails to load up. And not just on the first go - every time. I've even used autotest to see if it helps with execution time for unit tests, but it doesn't. Any time I change one test, it still takes 30 seconds to load them, and then about 4 seconds to execute. Has anyone else come across this issue? Has anyone figured out any way to fix this?

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• how can i log in to MySQL

  - by yang

  I am new to ubuntu and installed MySQL use a rpm file, and started it use sudo start mysql, when i try mysqladmin -u root password test I get mysqladmin: connect to server at 'localhost' failed error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' Check that mysqld is running and that the socket: '/var/run/mysqld/mysqld.sock' exists! I checked the mysqld folder and there is nothing what can i do the next? Thanks for your answers

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• Why is my Tiled map distorted when rendered with LibGDX?

  - by Sean

  I have a Tiled map that looks like this in the editor: But when I load it using an AssetManager (full static source available on GitHub) it appears completely askew. I believe the relevant portion of the code is below. This is the entire method; the others are either empty or might as well be. private OrthographicCamera camera; private AssetManager assetManager; private BitmapFont font; private SpriteBatch batch; private TiledMap map; private TiledMapRenderer renderer; @Override public void create() { float w = Gdx.graphics.getWidth(); float h = Gdx.graphics.getHeight(); camera = new OrthographicCamera(); assetManager = new AssetManager(); batch = new SpriteBatch(); font = new BitmapFont(); camera.setToOrtho(false, (w / h) * 10, 10); camera.update(); assetManager.setLoader(TiledMap.class, new TmxMapLoader( new InternalFileHandleResolver())); assetManager.load(AssetInfo.ICE_CAVE.assetPath, TiledMap.class); assetManager.finishLoading(); map = assetManager.get(AssetInfo.ICE_CAVE.assetPath); renderer = new IsometricTiledMapRenderer(map, 1f/64f); }

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• Node.js MMO - process and/or map division

  - by Gipsy King

  I am in the phase of designing a mmo browser based game (certainly not massive, but all connected players are in the same universe), and I am struggling with finding a good solution to the problem of distributing players across processes. I'm using node.js with socket.io. I have read this helpful article, but I would like some advice since I am also concerned with different processes. Solution 1: Tie a process to a map location (like a map-cell), connect players to the process corresponding to their location. When a player performs an action, transmit it to all other players in this process. When a player moves away, he will eventually have to connect to another process (automatically). Pros: Easier to implement Cons: Must divide map into zones Player reconnection when moving into a different zone is probably annoying If one zone/process is always busy (has players in it), it doesn't really load-balance, unless I split the zone which may not be always viable There shouldn't be any visible borders Solution 1b: Same as 1, but connect processes of bordering cells, so that players on the other side of the border are visible and such. Maybe even let them interact. Solution 2: Spawn processes on demand, unrelated to a location. Have one special process to keep track of all connected player handles, their location, and the process they're connected to. Then when a player performs an action, the process finds all other nearby players (from the special player-process-location tracking node), and instructs their matching processes to relay the action. Pros: Easy load balancing: spawn more processes Avoids player reconnecting / borders between zones Cons: Harder to implement and test Additional steps of finding players, and relaying event/action to another process If the player-location-process tracking process fails, all other fail too I would like to hear if I'm missing something, or completely off track.

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• Oracle Insurance Gets Innovative with Insurance Business Intelligence

  - by nicole.bruns(at)oracle.com

  Oracle Insurance announced yesterday the availability of Oracle Insurance Insight 7.0, an insurance-specific data warehouse and business intelligence (BI) system that transforms the traditional approach to BI by involving business users in the creation and maintenance."Rapid access to business intelligence is essential to compete and thrive in today's insurance industry," said Srini Venkatasantham, vice president, Product Strategy, Oracle Insurance. "The adaptive data modeling approach of Oracle Insurance Insight 7.0, combined with the insurance-specific data model, offers global insurance companies a faster, easier way to get the intelligence they need to make better-informed business decisions." New Features in Oracle Insurance 7.0 include:"Adaptive Data Modeling" via the new warehouse palette: Gives business users the power to configure lines of business via an easy-to-use warehouse palette tool. Oracle Insurance Insight then automatically creates data warehouse elements - such as line-specific database structures and extract-transform-load (ETL) processes -speeding up time-to-value for BI initiatives. Out-of-the-box insurance models or create-from-scratch option: Includes pre-built content and interfaces for six Property and Casualty (P&C) lines. Additionally, insurers can use the warehouse palette to deploy any and all P&C or General Insurance lines of business from scratch, helping insurers support operations in any country.Leverages Oracle technologies: In addition to Oracle Business Intelligence Enterprise Edition, the solution includes Oracle Database 11g as well as Oracle Data Integrator Enterprise Edition 11g, which delivers Extract, Load and Transform (E-L-T) architecture and eliminates the need for a separate transformation server. Additionally, the expanded Oracle technology infrastructure enables support for Oracle Exadata. Martina Conlon, a Principal with Novarica's Insurance practice, and author of Business Intelligence in Insurance: Current State, Challenges, and Expectations says, "The need for continued investment by insurers in business intelligence capabilities is widely understood, and the industry is acting. Arming the business intelligence implementation with predefined insurance specific content, and flexible and configurable technology will get these projects up and running faster."Learn moreTo see a demo of the Oracle Insurance Insight system, click hereTo read the press announcement, click here

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• rails bundler error installing nokigiri (1.5.5), and Bundler cannot continue

  - by Michael Durrant

  An error occurred while installing nokogiri (1.5.5), and Bundler cannot continue How to fix and get past the error? Installing nokogiri (1.5.5) with native extensions Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension. /usr/bin/ruby1.8 extconf.rb checking for libxml/parser.h... yes checking for libxslt/xslt.h... no ----- libxslt is missing. please visit http://nokogiri.org/tutorials/installing_nokogiri.html for help with installing dependencies.

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• How to correctly add daemon in MacOS 10.6.6 via launchd?

  - by Eye of Hell

  Hello. I have a very simple task to accomplish: to start tomcat application server on latest MacOS as a daemon. I have performed following steps: Installed Tomcat in /Library/Tomcat/Home Validated that it runs fine by executed /Library/Tomcat/Home/bin/startup.sh Added org.apache.tomcat.plist file to /Library/LaunchDaemons as found on internet (http://blog.i18n.ro/complete-guide-for-installing-hudson-ci-on-os-x-10-6/) Instructed MacOS to load a daemon description via sudo launchctl load org.apache.tomcat.plist. It succeeded (issuing this command second time outputs "already loaded"). Instructed MacOS to start a daeon via sudo launchctl start org.apache.tomcat.plist At this point MacOS shows an error "launchctl start error: No such process". I have checked the logfile for launchd - it have no record for this error. Google says nothing. And from error text i can't figure out what is the "process" and why it is "wrong" :(. Any hints what i'm doing wrong?

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• Diagnosing ADF Mobile iOS deployment problems

  - by Chris Muir

  From time to time I encounter customers who have taken possession of a brand new Apple Mac, have that excited "I've just spent more on a computer then I ever wanted to but it's okay" crazy gleam in their eye, but on pre-loading all the necessary software for Oracle's ADF Mobile to start their mobile campaign, following Oracle's setup instructions and deploying their first app to Apple's XCode iPhone Simulator they hit this error message in the JDeveloper Log-Deployment window: [01:36:46 PM] Deployment cancelled. [01:36:46 PM] ----  Deployment incomplete  ----. [01:36:46 PM] Failed to build the iOS application bundle. [01:36:46 PM] Deployment failed due to one or more errors returned by '/Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild'.  The following is a summary of the returned error(s): Command-line execution failed (Return code: 69) "Oh, return code 69, I know that well" I hear you say.  Admittedly the error code is less than useful besides drawing some titters from the peanut gallery. Before explaining what's gone wrong, I think it's useful to teach customers how to diagnose these issues themselves.  When ADF Mobile commences a deployment, be it to Apple's iOS or Google's Android platforms, JDeveloper and ADF Mobile do a good job in the Log window of showing you what the deployment process entails.  In the case of deploying to iOS the log window will literally include the XCode commands executed to complete the deployment cycle. As example here's the log output that was produced before the error message was raised.... take the opportunity to read this line by line and note the command line calls highlighted in blue: (Note some of the following lines have been split over multiple lines to suit reading on this blog, each original line is preceded by a timestamp. Ensure to check the exact commands from JDev) [01:36:33 PM] Target platform is (iOS). [01:36:33 PM] Beginning deployment of ADF Mobile application 'LayoutDemo' to iOS using profile 'IOS_MOBILE_NATIVE_archive1'. [01:36:34 PM] Command-line executed: [/Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild, -version] [01:36:34 PM] Command-line execution succeeded. [01:36:34 PM] Running dependency analysis... [01:36:34 PM] Building... [01:36:34 PM] Deploying 3 profiles... [01:36:35 PM] Wrote Archive Module to /Users/chris/fmw/jdeveloper/jdev/extensions/ oracle.adf.mobile/Samples/PublicSamples/LayoutDemo/ApplicationController/ deploy/ApplicationController.jar [01:36:35 PM] WARNING: No Resource Catalog enabled ADF components found to package [01:36:36 PM] Wrote Archive Module to /Users/chris/fmw/jdeveloper/jdev/extensions/ oracle.adf.mobile/Samples/PublicSamples/LayoutDemo/ViewController/ deploy/ViewController.jar [01:36:36 PM] Verifying existence of the .adf source directory of the ADF Mobile application... [01:36:36 PM] Verifying Application Controller project exists... [01:36:36 PM] Verifying application dependencies... [01:36:36 PM] The application may not function correctly because the following dependent libraries are missing: /Users/chris/jdev/jdeveloper/jdeveloper/jdev/extensions/oracle.adf.mobile/ lib/adfmf.springboard.jar [01:36:36 PM] Verifying project dependencies... [01:36:36 PM] Validating application XML files... [01:36:36 PM] Validating XML files in project ApplicationController... [01:36:36 PM] Validating XML files in project ViewController... [01:36:40 PM] Copying common javascript files... [01:36:41 PM] Copying FARs to the ADF Mobile Framework application... [01:36:41 PM] Extracting Feature Archive file, "ApplicationController.jar" to deployment folder, "ApplicationController". [01:36:42 PM] Extracting Feature Archive file, "ViewController.jar" to deployment folder, "ViewController". [01:36:42 PM] Deploying skinning files... [01:36:43 PM] Copying the CVM SDK files built for the x86 processor... [01:36:43 PM] Copying the CVM JDK files built for the x86 processor... [01:36:43 PM] Command-line executed: [cp, -R, -p, /Users/chris/fmw/jdeveloper/jdev/extensions/oracle.adf.mobile/iOS/jvmti/x86/, /Users/chris/fmw/jdeveloper/jdev/extensions/oracle.adf.mobile/ Samples/PublicSamples/ LayoutDemo/deploy/IOS_MOBILE_NATIVE_archive1/temporary_xcode_project/lib] [01:36:43 PM] Command-line execution succeeded. [01:36:43 PM] Command-line executed: [cp, -R, -p, /Users/chris/fmw/jdeveloper/jdev/extensions/oracle.adf.mobile/iOS/jvmti/jar/, /Users/chris/fmw/jdeveloper/jdev/extensions/oracle.adf.mobile/Samples/ PublicSamples/LayoutDemo/deploy/IOS_MOBILE_NATIVE_archive1/ temporary_xcode_project/lib] [01:36:43 PM] Command-line execution succeeded. [01:36:43 PM] Copying security related files to the ADF Mobile Framework application... [01:36:44 PM] Command-line executed from path: /Users/chris/fmw/jdeveloper/jdev/extensions/oracle.adf.mobile/Samples/ PublicSamples/LayoutDemo/deploy/IOS_MOBILE_NATIVE_archive1/temporary_xcode_project/ [01:36:44 PM] Command-line executed: /Applications/Xcode.app/Contents/Developer/usr/bin/xcodebuild clean install -configuration Debug -sdk /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/ Developer/SDKs/iPhoneSimulator6.1.sdk DSTROOT=/Users/chris/fmw/jdeveloper/jdev/extensions/oracle.adf.mobile/Samples/ PublicSamples/LayoutDemo/deploy/IOS_MOBILE_NATIVE_archive1/Destination_Root/ IPHONEOS_DEPLOYMENT_TARGET=5.0 TARGETED_DEVICE_FAMILY=1,2 PRODUCT_NAME=LayoutDemo ADD_SETTINGS_BUNDLE=NO As you can see when we move from JDeveloper undertaking its work, it then passes the code off in the last few lines for Apple's XCode to assemble and deploy the required .ipa file.  From the original error message which followed this complaining about xcodebuild failing with return code 69, we can quickly see the exact command line used to call xcodebuild. As this is the exact command line call with all its options, you're free to open a Terminal window in Mac OSX and execute the same command by simply copying and pasting the command line. And via this you'll then find out what return code actually 69 means.  Unfortunately it's not that exciting. For Macs that have just been installed and configured with XCode, XCode (and for that matter iTunes) which is required by ADF Mobile to deploy must have been run at least once before hand on your brand new Mac (to be clear that's once ever, not once every restart). On doing so you will be presented with a license agreement from Apple that you must accept. Only once you've done this will the command line calls work.  They're currently failing as you haven't accepted the legal terms and conditions. (arguably you an also accept the terms and conditions from the command line too, but ADF Mobile cannot do this on your behalf, so it's just easier to open the tools and confirm the legal requirements that way). Putting aside the error code and its meaning, watching the log window, watching what commands are executed, learning what they do, this will assist you to diagnose issues yourself and solve these sort of issues more relatively quickly.  From my perspective as an Oracle Product Manager, it allows me to say "this is the stuff you don't need to worry about when you use ADF Mobile when it's configured correctly" .... as you can see my salesman qualities shine through. For anyone who is happily using ADF Mobile on a Mac and wondering why you didn't hit these issues, it's quite likely that you already accepted the license conditions before deploying via ADF Mobile.  For instance, though I'm not a fan of iTunes itself, iTunes was one of the first things I loaded on my Mac to access my Justin Bieber albums. Image courtesy of winnond / FreeDigitalPhotos.net

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• Repair GRUB bootloader for multiboot system

  - by user1715324

  I have two hard disks – one a 1TB and the other a 250 GB. I installed the OSes in the following order: Windows 7 on the first hard disk (1 TB) After that Kubuntu 12.04 on a partition (/dev/sdb7) on the second hard disk (250 GB) The second drive also contains an NTFS partition. Now, kubuntu's bootloader was installed on the second hard drive's MBR (and successfully detected Windows 7). So, whenever I wanted to load Windows I used to select the first hard disk from the BIOS boot menu and the second hard disk whenever I wanted to load kubuntu. I know I could have set the second hard disk as the default drive, still I prefered this method. The problem started when I installed Linux Mint 13 on the second hard disk (/dev/sdb3) and overwrote kubuntu's original MBR. Now, the GRUB just detects Mint and Windows. The MBR on the 1 TB hard disk is untouched. Is there a way I can modify the MBR on the second hard disk now so that it will show kubuntu and Mint both?

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• Cannot Access Web Interface on HP 2510G

  - by Stephen

  I am currently setting up a new infrastructure with HP 2510s as edge switches and an HP E5406 as the main switch. I also have a DHCP and DNS server running on the same network. When i first set up one of my 2510 switches, I gave it a static IP through the console and then went to the web interface to continue my configuration. Later, I realized that I assigned it the wrong IP address, so i went through the web interface and changed the IP address to the correct one. Now, I can't access the web interface. I can telnet to the switch on the new IP address, but the web interface will not load. If I switch from static IP to DHCP, it loads the web interface. Any ideas on what could be causing the web server in the 2510 not to load with the new static IP address?

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• Postfix performance

  - by Brian G

  Running postfix on ubuntu, sending alot of mail ( ~ 1 million messages ) per day. loads are extremly high but not much in terms of cpu and memory load. Anyone in a similiar situation and know how to remove the bottleneck? All mail on this server is outbound. I would have to assume the bottleneck is disk. Just an update, here is what iostat looks like: avg-cpu: %user %nice %system %iowait %steal %idle 0.00 0.00 0.12 99.88 0.00 0.00 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s avgrq-sz avgqu-sz await svctm %util sda 0.00 12.38 0.00 2.48 0.00 118.81 48.00 0.00 0.00 0.00 0.00 sdb 1.49 22.28 72.28 42.57 629.70 1041.58 14.55 135.56 834.31 8.71 100.00 Are these numbers in line with the performance you would expect from a single disk? sdb is dedicated to postfix. I think it is queue shuffling, from incoming-active-deferred More details from questions: Server: Quad core Xeon(R) CPU E5405 @ 2.00GH with 4 GB ram Load average: 464.88, 489.11, 483.91, 4 cores. but the memory utilization and cpu is minimal Postfix instances between 16 - 32

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• Windows Server Configuration with Exchange, SQL Express and IIS

  - by Reafidy

  In our small office we are currently running a standalone tower server with WS 2008 R2, SQL Express and IIS. This server is going to be decommissioned and scrapped as its old and very noisy. We are going to purchase a new server with WS 2012 Standard and a heap of ram. It will still be a standalone server so it will be a domain controller, have SQL Express and IIS installed. We intend to install the hyper-v role and host a second virtual server to distribute the load. We are a small company and have only 15 staff members so its not a huge load on the server. Can a single server handle this type of installation, we don't want to purchase two servers. If so how should it be configured with regard to which software packages should be virtualized(if any). Redundancy is not a huge issue for us.

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• Meta-licensing of applications

  - by Gene

  I'm currently evaluating license management solutions for our customized and project-based applications, which are supported by a single server in the intranet of the customer. The applications use common functionality provided by the server (session handling, data synchronization, management capabilities, etc) and are installed on mobile devices. We allow our customers to run the applications on X devices and want to check on the server, whether the customer sticks to this limit (based on the sessions). We don't want licensing software to be installed on the devices itself (for example providing X serials to the customer) nor do we want to host an additional server for licensing in the intranet of the customer. If a client connects, our server should load the license for the application running on the client and verify, that there are sessions left. The licensing managers I looked at (12 products so far) focus on the application itself and don't allow me to implement such a floating behavior as described above. For example, this software could easily be used to create a "Standard Edition" or a "Professional Edition" of our server software, which is not our intention. In XHEO DeployLX there is a "Session Limit", which allows to limit the license to the currently established sessions in ASP.NET, which comes very close to my needs. I'm currently thinking of implementing a custom solution, which allows me to load and enforce custom-defined licenses per application on the server-side and a simple editor to define such licenses (which would contain a type and the limit itself), but I would appreciate an existing, easy to integrate commercial solution. I think it could be possible to use DeployLX for this task, but I would spend a lot of money for implementing most of the solution myself (except for the editor). Thanks in advance for any suggestions or hints. Gene

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• Temporarily Utilizing 304 Header on Apache for Crawlers

  - by Volomike

  I have a client who has a hosting arrangement with 400 customer sites all hosted through SuPHP in CGI mode on Apache. The sysop is now gone and the client is calling on me for rolling out a new PHP thing. Trouble is -- server load is very high right now and we have found that it's due to the crawlers. We had one customer in particular who complained of slow websites, and we engaged a 304 header plugin in his site against most crawlers, and his site perked right up. We'd like to lower that load by issuing a global 304 header to all the crawlers, letting human visitors through. I have a long list of user agent keywords to trap for. What's the best way to temporarily engage that global 304 header, while allowing human visitors to get right on through? I mean, I could roll out 400 .htaccess file changes, but it would be ideal to make this change in like one central Apache config and then it automatically affect all the sites at once.

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• ifconfig return "unknown interface: no such device"

  - by xolstice

  I'm trying to install a Linux driver for my wireless network card (D-Link DWL-G510) on my Red Hat Linux 7.1 machine with a 2.4.37.9 kernel. I downloaded the serial monkey driver from the sourceforge site and was able to successfully compile the rt73 module and load it into the kernel. The problem now is that everytime I issue the command ifconfig wlan0 up it keeps returning with the following error message: wlan0: unknown interface: No such device. I'm at a loss as to what to do here. I specifed wlan0 as the alias for the rt73 module in the modules.conf and also tried to load the driver with the command modprobe rt73 ifname=wlan0 (this specifies the interface name according to the instructions packaged in the driver), but the error message still keeps coming up. Is there something else I need to do in Linux to configure the wlan0 part or is the module not recognizing the wireless network card? It would be quite strange if it is the later since all information from the Internet is indicating this is the linux driver I should be using for mentioned wireless card.

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• Postfix SMTP server down on Ubuntu

  - by Paddington

  I have a Plesk server running Postfix on Ubuntu 10.04 and the SMTP service on port 25 is down. When I stop and then start postfix the server comes up only for a minute and goes down again. I have checked the load on the server and it is low as shown: *top - 04:29:33 up 19 days, 3:25, 4 users, load average: 1.47, 1.78, 2.34 Tasks: 936 total, 1 running, 935 sleeping, 0 stopped, 0 zombie Cpu(s): 0.7%us, 0.3%sy, 0.0%ni, 86.6%id, 11.7%wa, 0.6%hi, 0.1%si, 0.0%st Mem: 6110496k total, 6072988k used, 37508k free, 251244k buffers Swap: 12000544k total, 95264k used, 11905280k free, 4370432k cached* IMAP clients are not experiencing a problem and there are no issues with receiving emails for both POP or IMAP. Only SMTP (port 25) is a problem. If I ask clients to use the submission port (587) messages are delivered. netstat -lnt shows the following results , so its not a port issue. tcp 0 0 0.0.0.0:25 0.0.0.0: LISTEN tcp 0 0 0.0.0.0:8443 0.0.0.0:* LISTEN*

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• broadcom BCM4318 firmware missing

  - by Lucas

  I tried sudo apt-get update && apt-cache search b43 sudo apt-get install firmware-b43-installer after that i get this error Can't update, Some index files failed to download i tried cd /var/lib/apt/lists/partial sudo rm gb.archive.ubuntu.com_ubuntu_dists_natty_multivers e_source_Sources OR sudo rm /var/lib/apt/lists/partial/gb.archive.ubuntu.com_ubuntu_dists_natty_multivers e_source_Sources another error cannot remove e_source_Sources

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• Whole Lotta Virtualization Goin' On

  - by rickramsey

  Lately we've published a lot of content about virtualization. Here's a sampling. Podcat: Technology Preview of Transcendent Memory Turns out that in a virtual environment, RAM is the bottleneck. Not because it's slow, it's not, but because each CPU still had to use its own RAM. Which gets expensive. In this podcast, Dan Magenheimer describes how Oracle and the open source community taught the guest kernel in Oracle Linux to share its memory with other CPU's. Transcendent memory will wind up saving large data centers a lot of money. Find out how. Tech Article: How to Use Oracle VM Templates This article describes how to prepare an Oracle VM environment to use Oracle VM Templates, how to obtain a template, and how to deploy the template to your Oracle VM environment. It also describes how to create a virtual machine based on that template and how you can clone the template and change the clone's configuration. Tech Article: How to Set Up a Load Balanced Application Across Two Oracle Solaris Zones Install Apache Tomcat on two Oracle Solaris zones. Connect them across a VPN. And let the Integrated Load Balancer in Oracle Solaris 11 manage traffic. Presto: high(er) availability in a single server. Tech Article: How to Install Oracle RAC on Oracle Solaris Zone Clusters Learn how to implement a multi-tiered database environment that isolates database tiers and administrative domains, while taking advantage of centralized (and simpler) cluster admin. For fans of Jerry Lee Lewis If you're a fan of Jerry Lee Lewis, you might enjoy this video. - Rick Website Newsletter Facebook Twitter

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• Domain DNS Lookup time

  - by Maxim Dsouza

  I have a website hosted at www.doondoo.com. The site when loaded in the browser for the first time, takes a bit of time to load. It looks like the DNS lookup takes a lot of time. Once the site is loaded on the browser, other pages load very quickly. The application is hosted on Linode and I have pointed my domain to the nameservers of Linode i.e ns1.linode.com and ns2.linode.com I wanted to know what is the reason behind this delay in the loading. And what could be the possible means to improve it. Thanks in advance.

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• Stress test speed on a gateway?

  - by TheLQ

  I'm interested in stress testing my gateway server but am lost on how. Most of the stress testing applications I've seen only see how much load an app like Apache can handle, but not this. Essentially I want to send as many packets I can into this box with one computer on one card and see how many come out the other in another computer just to get an idea of what kind of load this can handle. I'm also interested how Snort will perform. I'm not really sure how to do this though. What tools could you recommend that could do this?

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