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• HAproxy roundrobin balancing does not appear to be distributing evently

  - by andrew

  Hello, I know that with loaded servers, roundrobin in HAproxy (1.4.4) does not evenly distribute, but my servers are currently getting NO traffic (test setup), and roundrobin balancing does www1,www1,www1,www1,www1,...www2,www2,www2,...,www1... I'm verifying this by having the script being run on each server cat /etc/HOSTNAME (slackware). I need to have it switch back and forth each time to test some session stuff (stored in shared memcached) but am having trouble getting it to switch between my two web servers on each request. global log 127.0.0.1 local0 warning maxconn 4096 chroot /usr/share/haproxy pidfile /var/run/haproxy.pid uid 99 gid 99 daemon defaults balance roundrobin fullconn 100 maxconn 4096 mode http option dontlognull option http-server-close option forwardfor option redispatch retries 3 timeout connect 5000 timeout client 20000 timeout server 60000 timeout queue 60000 stats enable stats uri /haproxy stats auth ***:*** frontend www *:80 log global acl is_upload hdr_dom(host) -i uploads.site.com acl is_api hdr_dom(host) -i api.site.com acl is_dev hdr_dom(host) -i dev.site.com acl is_apidev hdr_dom(host) -i apidev.site.com use_backend uploads.site.com if is_upload use_backend api.site.com if is_api use_backend dev.site.com if is_dev !is_apidev default_backend site.com backend site.com option httpchk HEAD /alive.php HTTP/1.1\r\nHost:site.com server www1 1.1.1.1:8080 weight 10 minconn 5 maxconn 25 check inter 2000 rise 2 fall 2 server www2 1.1.1.2:8080 weight 10 minconn 5 maxconn 25 check inter 2000 rise 2 fall 2 backend api.site.com option httpchk HEAD /alive.php HTTP/1.1\r\nHost:api.site.com server www1 1.1.1.1:8080 weight 10 minconn 5 maxconn 25 check inter 2000 rise 2 fall 2 server www2 1.1.1.2:8080 weight 10 minconn 5 maxconn 25 check inter 2000 rise 2 fall 2 backend dev.site.com option httpchk HEAD /alive.php HTTP/1.1\r\nHost:dev.site.com server www1 1.1.1.1:8080 weight 10 minconn 5 maxconn 25 check inter 2000 rise 2 fall 2 server www2 1.1.1.2:8080 weight 10 minconn 5 maxconn 25 check inter 2000 rise 2 fall 2 backend uploads.site.com option httpchk HEAD /alive.php HTTP/1.1\r\nHost:uploads.site.com server www1 1.1.1.1:8080 weight 10 minconn 5 maxconn 25 check inter 2000 rise 2 fall 2 server www2 1.1.1.2:8080 backup weight 10 minconn 5 maxconn 25 check inter 2000 rise 2 fall 2 So basically, I have some different back-ends (I've verified the ACLs are working), with the default option "roundrobin" selected. I've tried removing weights, removing the minconn/maxconn/fullconn attributes for all servers (not just the backend I'm testing), tried removing the ACLs, etc. I've been testing on dev.site.com BTW. Anyone see a reason why I can't get something like www1,www2,www1,www2,...? Also, this is one of my first questions on here, so please let me know if I left anything needed out of my post. Thanks!

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• How to test filesystem in Linux?

  - by sasayins

  Hi, I am planning to test if my linux setup is stable. And I want to test the filesystem of my linux? Is there any standard testing for linux filesystem? Thanks.

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• VMWare Worksation hardware

  - by Avi

  I'm gonna spec a new computer, used for running VMWare Worksation. The computer will be running a few virtual machines - A dev machine running VS-2010, a build machine, a version-control machine, a web server for testing, a "personal" machine running office etc. Any suggestions? Processor, MB, disks etc? (P.S. The only item I AM sure of is that the machine will be using a Xonar Essence Stx, connected to my NAND amplifier ;-)

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• ocs inventory agent: is there a way to bind a computer to a group through the agent?

  - by dam

  I'm testing ocs inventory. I'm wondering if there is a way to bind a computer to a static group through the agent at the time of sending the inventory. To be more clear: I set a static group "mygroup" into ocs server: I would like to run the agent on a client computer and specify that the computer is a member of "mygroup". Thank you!

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• How can I copy a Virtual Machine on VMWare ESXi 4 while maintaining Thin Provisioning?

  - by Billy ONeal

  We have an ESXi host we use for testing, which results in a ton of VMs being created and copied on a regular basis. We don't have the storage capacity to use thick provisioned VMs on this server, and have been maintaining the copies using VMWare Converter. But using the converter is an incredibly slow operation which copies the entire contents of the VM over the network several times before actually finishing the copy. Is there a way to simply clone the VM but maintain the thin-provisioning?

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• Seeking free project planner with auto resource levelling

  - by mawg

  As the title says, I am seeking a project planner with automatic resource levelling. It must be free for commercial use and a bonus, but not requirement, would be MS project import/export. I like the look of Task Juggler, but it is at a stage of development hovering between v2 and v3. Anything else? Basically, I want to play "what if games" - I will determine the tasks and their effort, and the dependencies between them and then try to figure out how many staff I need. Since many of the tasks can be done in parallel, it is difficult to guess how many are needed. A PM tool with automatic resource levelling seems like a good way to find out.

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• Qemu not installed on ubuntu with xen 4.0.1 ?

  - by Disco

  I'm kinda confused. I've installed Xen on a fresh/clean ubuntu 10.10 server (x64) using : hg clone xen-4.0-testing.hg make world make install-kernels Trying to launch qemu; first "not found" Then I installed from source (from tarballs at qemu.org) But then qemu complains about not finding /dev/kvm Am I missing something here ? I thought that qemu was part of xen install (at least it was from 3.x series). All i have is qemu-img-xen and qemu-nbd-xen.

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• How to disable Javascript in IE 6?

  - by Activist

  Hello! How can I completly disable cookies and JavaScript in Internet Explorer 6 (under Windows XP). This is for testing purposes. Thanks!

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• Multiple servers acting like a single one with all the hardware?

  - by marc.riera

  Hello, by now I have 10 servers for hpc, power computing oriented. My users need to launch several processes using qmake. The users are used to work with ubuntu 9.10, and the software from the repositories is switable for them. I've deployed ubuntu 9.10 to all 10 servers (pxe rocks). By now we work with parallel-ssh and cluster-ssh, which allows as to launch the same process to all servers. With this tools this tools the servers remain as independent but with the same software and the same launched command. Now we would like to go to next step and see all the servers as a single one with all the resources from the other 9 as if was its resources. The difference would be substantial in time to process and also time to design the command to launch. Any advice on wich software to use will be very useful? Thanks

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• How to memory test in Linux?

  - by sasayins

  Hi, I'm planning to test my Linux box and I want to start in memory testing. But my problem is what should I need to test the memory in my linux box? Should I need a tool? Or there are some APIs to use to build some scripts? Thanks

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• Deploying website content via Subversion

  - by Johann

  we have recently set up a new development infrastructure and process for one of our clients. This involves the strict use of subversion as a central source code repository. The svn repositories contains a seperate branch for code on the live system (/branches/live/). The repositories are use for PHP content (mainly Wordpress Blogs), but in future they may hold other asp code as well. Bonus points for a solutions which more or less in the same way with ASP code on Windows Server 2008 R2. We have two servers: one staging system and one live system. The staging system is updated regularly with the code of the trunk. The live system is update manually. Each webroot on the servers are working copy of either the trunk (staging system) or the live branch (live system). The current workflow is: Developing on the dev's box - commit into the trunk - auto-deploy on staging system - testing on the staging system - merging into /branches/live/ - manual deployment on live system. This works for one-way changes very well, however we have some troubles on every wordpress (or plugin) update: The WP update process removes the directories and unpack the archive of the new version. This removes the svn admin area as well, which produces a lot of errors. We could switch to SVN 1.7 with a single, global admin area, but this would only solve on part of the problem. Finally, we have done the update via the WP Gui, restored the svn admin area, added/removed the files and committed the changes to the trunk. After testing, we had to do basically the same thing on the live server (except the commit, we just reverted the changes and merged the new files from the staging system to the live system). I'm currently thinking of the following: The htdocs of each website is a svn export Each website has a svn working copy beside the htdocs directory a script which "replays" the changes in the wc from htdocs after an update in WP (rsync'ing the changed files to the working copy, rsync'ing new files and svn add them and finally svn delete the deleted files). The script would have to exclude some files (like wp-config.php, uploads/temp directories, etc.). Are there better ways to do this? Unfortunaly, a complete CI server is out of scope due to time and budget limitations.

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• Simulate "battery mode" for windows desktop even though it is not connected to battery.

  - by JubJub

  Is there a way to fool windows desktop to think that it is running off a battery (like in a laptop) ? I need to do this to do some testing in battery mode, but I don't have a laptop on hand to do this. I tried to find utilities on the net that could do this but I had no luck. What do you think guys?

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• How can I disable interactive login for all the members of an active directory group?

  - by Jeremy Hutchinson

  I have a group of users that I'm setting up as test users. I want to make it so that no one can log onto the domain with these accounts, but they need to have active exchange mailboxes since this is what I am testing. I put all the test users in the same group. Can I set a security policy that will do this?

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• Granting read-write rights to my web application on VPS

  - by davykiash

  Am currently testing a bulk CSV import functionality web application and I came across a error The given destination is not writeable My application is zend based and uses the MVC structure application --uploads library --Zend public --index.php What Ubuntu command do I exectute to safely grant the necessary rights to my uploads folder in my web application?

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• How do I prevent apache from serving the .git directory?

  - by Shoan

  I have started using git for deployment of websites for testing. How do I prevent apache from serving the .git directory contents? I tried <Directorymatch "^/.*/\.svn/"> Order deny,allow Deny from all </Directorymatch> with no success. I know that I can create a .htaccess file in each .git directory and deny access, but I wanted something I could put into the main config file that makes this global across all websites.

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• blocking hotlinking with .htaccess only works for plain domain, when preceeded by www no block

  - by casualprogrammer

  Having tried all sorts of suggestions popping up from google, I am at my wit's end. Presently I use a solution created with htaccesstools.com/hotlink-protection/ RewriteEngine on RewriteCond %{HTTP_REFERER} !^$ RewriteCond %{HTTP_REFERER} !^http://(www\.)?mydomain.tld/.*$ [NC] RewriteRule \.(gif|jpg|jpeg|png|js|css)$ - [NC,F,L] Checking it out with altlab.com/htaccess_tutorial.html testing facility (near bottom of page ) shows no image if mydomain.tld/mypic.jpg is entered, while if prefixed with www (www.mydomain.tld/mypic.jpg) the pic is displayed. Any helpful comments welcome.

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• How can I install a Windows 8 application for another user and pin it on their Start screen?

  - by Simon Campbell

  I am trying to create a locked down Windows 8 account using Group Policies with no tiles on the start screen except for one for the purposes of a Kiosk PC. How can I (as an administrator account) install a custom application (side-loading) for another user and pin it to their start menu? This application is still in development so will need to be updated frequently on the locked account for testing.

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• Suggestions for a web hosting site (both PHP and ASP.NET)

  - by eibhrum

  Hi, I'm just wondering if there's a web hosting site that offers hosting for PHP and ASP.NET at the same time. It would be great if you give me a site that offers free service. I would like to use it for testing purposes only. But I could still look for affordable one. Comments/Suggestions are welcome. Thanks.

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• Sharing VirtualBox snapshots

  - by JesperE

  Is it possible to "share" a VirtualBox snapshot? I have a "baseline" VirtualBox machine, and I would like to be able to take a snapshot, and send it to another user which has the same baseline machine. The scenario is that the baseline machine is used for testing, and I want to allow testers to create snapshots which describe a certain system state, and send that snapshot to developers to further examination. EDIT: To clarify, I would like to be able to export snapshots "incrementally" without having to export the entire machine as an appliance.

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• 550 relay not permitted

  - by Nick Swan

  We are using Fogbugz on our server to do customer support emails. Occasionally we get errors coming back when sending emails which say: 550 relay not permitted This seems to happen at random though, sometimes sending an email to a person works, next time to the same person it'll bounce back. I've tried setting up reverse DNS with the server host and creating the SPF record in GoDaddy but we still get some of these errors. Is there anything else I can do, and is there a way of testing these are actually configured correctly?

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• Nginx: Maintenance page and localhost access

  - by ian.evans

  As I prepare to test some changes, I thought I'd set up a maintenance page block so I could do the testing. Just realized though that the maintenance block examples for nginx take the site down for everyone. How do you serve the maintenance page to visitors will still allowing localhost access. Should I just create a new server block listening on another port and deny all, allow 127.0.0.1?

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• IIS Mail from Pickup directory not going into Badmail folder

  - by DDiVita

  I have been testing my SMTP setup on IIS6 today. I have created a test.eml file that I palce in my pickup directory and it gets sent out. However, when I put a bad address into the file it is not going into the badmail folder. The file disappears and it seems to be removed from the file system. Thanks

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• Ubuntu 12.04 crash analysis - strange binary data on all open files at the moment of crash

  - by lanbo

  A couple of hours ago we got a system crash on Ubuntu 12.04. We checked all the log files and there is nothing suspicious to blame to. Last stuff that was logged was some dovecot activity. There are no kernel panic messages. Nothing. It is a new server (new hardware) we are testing before production. And because it is new hard, I'm suspicious the problem may be due to some faulty hardware. We already run memtester with no problem detected. I'll be happy to hear from other hardware testing tools (the machine has SSD). Anyway, the thing I wanted to ask you is a different one. The strange thing is on every open file at the moment of the crash we found the next sequence of symbols was written into them: "@^@^@^@^@^@^@...". For example, on the syslog log file we got: Apr 16 15:53:56 odyssey dovecot: pop3-login: Aborted login (auth failed, 1 attempts): user=<info>, method=PLAIN, rip=46.29.255.73, lip=5.9.58.177 ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^ [these continues for about 1000 chars...] ^@^@^@^@Apr 16 15:55:12 odyssey kernel: imklog 5.8.6, log source = /proc/kmsg started. We got all these symbols in all open files. These include: syslog, mail.log, kern.log, ... But also on some logs that are output by php scripts run in CRONs from user accounts (not root). So, any idea why all open files got these characters written during the crash? This is pretty bad since the crash corrupted many files (we don't even know which other ones may be affected). We are suspicious that all open files (in write mode maybe) at the moment of the crash got all these symbols inserted. Why is that? BTW [in case it helps], the system automatically rebooted after the crash but Apache did not start. There were not traces in /var/apache2/*log why apache did not start. After running a "service apache2 start" it started with no problems. Also, we rebooted the machine manually and Apache also started on reboot. But it did not start after the crash and no errors were reported. Thanks guys!

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• Set up domain filter on IIS 6 SMTP Server

  - by trentniemeyer

  Is there a way to specify that only emails from a certain domain get sent from the SMTP Server on IIS 6? This would be super helpful for our testing environment.

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• MongoDB: ReplicaSet slower than a corresponding Master/Slave config

  - by SecondThought

  Is it true that a mongoDB configured as a replicaset (lets say two nodes + an arbiter) will always be slower than the same DB and server specs but configured as a Master? I've run some tests and found out that for a fresh DB, RS is a little quicker than Master/Slave config but when the DB is getting bigger than ~100k records the latter is getting much snappier. am I missing something here? PS: I was testing it with mongoid driver for ruby.

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