http://www.couchbase.com/issues This file is an XML representation of an issue en-us 5.2.4 845 26-12-2012 http://www.couchbase.com/issues/browse/MB-7626 Couchbase Server I have done some QA to help narrow down an issue I have discovered. <br/> <br/> 1. Setup Couchbase from 64bit Ubunut 12 package. <br/> 2. Next select a CouchDB bucket. <br/> 3. Next complete the setup. <br/> <br/> Expected: Couchbase server and bucket functioning. <br/> <br/> Actual: The Couchbase server appears to just keep crashing / i.e. restarting every few seconds. <br/> <br/> If I remove the couchDB bucket no crashes / restart occur. <br/> If I create a memcached bucket only the server is functioning fine and the bucket functions as expected. <br/> <br/> This is on a OpenVZ VPS container running Ubuntu 12.04 with a CentOS 6 OS as the host on 2.6.32 kernel. <br/> <br/> I went ahead and setup couchbase on another Ubuntu 12.04 dedicated server (exact replica of the above server without the virtualization) and no issues. <br/> <br/> What debug output information from the logs would you like to help identify this issue? <br/> OpenVZ VPS container running Ubuntu 12.04 with a CentOS 6 OS as the host on 2.6.32 kernel. MB-7626

[RN 2.0.2] Couchbase continually crashes and restart when Couch bucket is created in OpenVZ environment

Bug Critical Reopened Unresolved Public Aleksey Kondratenko creator11 2.0.1-release-notes 2.0.2-release-notes Tue, 29 Jan 2013 15:41:36 -0600 Fri, 19 Apr 2013 13:17:00 -0500 2.0 2.0.1 2.0.2 2.1 ns_server 0 5 Ok I found the fix to this issue. <br/> <br/> memsup as a previous bug I found was causing a segmentation fault. Upgraded to latest erlang with erlang-os-mon 2.2.10 and issue has been resolved on an OpenVZ container. I just symlinked to the new version for couchbase to use. Might be handy to add this to a knowledge base for others, since I have found 2 other people that had similar issues on the web in forums. Farshid,<br/> <br/> Please close the bug if it&#39;s not required for the QE verification. This might be good to add to our documentation. Added to 2.0.1 RN: <br/> <br/> In OpenVZ Linux containers, the server had crashed and restarted when you <br/> created a Couchbase bucket. This was due to an issue in the memsup process from Erlang. <br/> To fix this issue, you should upgrade to the latest version of Erlang, and have Couchbase Server use this version. Added to 2.0.1 RN: <br/> <br/> In OpenVZ Linux containers, the server had crashed and restarted when you <br/> created a Couchbase bucket. This was due to an issue in the memsup process from Erlang. <br/> To fix this issue, you should upgrade to the latest version of Erlang, and have Couchbase Server use this version. See RN 2.0.1 addition. If you reopen, please assign to engineer responsible for fixing. Integrated in ui-testing #11 (See [<a href="http://qa.hq.northscale.net/job/ui-testing/11/">http://qa.hq.northscale.net/job/ui-testing/11/</a>])<br/> &nbsp;&nbsp;&nbsp;&nbsp;<a href="http://www.couchbase.com/issues/browse/MB-7626" title="[RN 2.0.2] Couchbase continually crashes and restart when Couch bucket is created in OpenVZ environment">MB-7626</a>: tune rebalance options during cluster setup (Revision 7c828a6a1de4f7c8fb76265766d3eb53f183fe3e)<br/> <br/> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Result = SUCCESS<br/> pavelpaulau : <br/> Files : <br/> * pytests/performance/perf.py<br/> Karen, can you provide instructions on which version of Erlang to use here and instructions on how to apply the workaround mentioned? Hi, <br/> <br/> Can you provide the version of Erlang I Ishould document, and is the workaround just to upgrade to this version? Or are there other steps someone must do in order to upgrade to Erlang using CB? <br/> <br/> <br/> Thanks, <br/> <br/> Karen <br/> I&#39;ve actually applied the the Workaround for <a href="http://www.couchbase.com/issues/browse/MB-4376" title="setup get HDD and memory totale and free space wrong (0Mb)"><strike>MB-4376</strike></a> successfully (at least for a development environment) to CB 2.0.1 as I didn&#39;t succeed in getting CB to use a entirely different version of Erlang. Note that we have confirmed through another customer that the workaround in mb-4376 is successful.<br/> <br/> Can this get rolled into 2.0.2? Hi Perry, confirm this, ignore formatting (will go in release notes, where workarounds, known issues, etc. go):<br/> <br/> =========<br/> <br/> last email from prospect: <br/> I’ve solved the problem by compiling memsup with the patch mentioned in <a href="http://www.couchbase.com/issues/browse/MB-4376">http://www.couchbase.com/issues/browse/MB-4376</a> applied. This patch is included in the R15B01 release of Erlang. Perhaps Issue 4376 shouldn’t be marked fixed until Couchbase is using Erlang R15B01 or later? <br/> <br/> ==========<br/> <br/> Existing content:<br/> <br/> In OpenVZ Linux containers, the server had crashed and restarted when you created a Couchbase bucket. This was due to an issue in the memsup process from Erlang. To fix this issue, you should upgrade to the latest version of Erlang, and have Couchbase Server use this version.<br/> <br/> Proposed addition: <br/> <br/> 1) You should stop Couchbase server<br/> 2) Make a copy of your original memsup then apply the patch available on GitHub: <a href="https://github.com/vorobev/otp/compare/maint-memsup.patch">https://github.com/vorobev/otp/compare/maint-memsup.patch</a> <br/> <br/> You can also download the following two files and compile yourself:<br/> <br/> -https://raw.github.com/vorobev/otp/maint-memsup/lib/os_mon/c_src/memsup.c <br/> <br/> -https://raw.github.com/vorobev/otp/maint-memsup/lib/os_mon/c_src/memsup.h <br/> <br/> gcc memsup.c -o memsup<br/> <br/> Place the compiled code in /opt/membase/lib/erlang/lib/os_mon-2.2.5/priv/bin/<br/> <br/> 3) Restart Couchbase Server<br/> That&#39;s fine from a workaround perspective I guess...but my request was more about actually fixing the bug for 2.0.2.<br/> <br/> I&#39;ll add the ns_server component.<br/> <br/> Thanks Added content: <br/> <br/> <a href="https://github.com/couchbase/docs/commit/b8094b5c61802fb4b76f0ae6c9f4979c5f1aa6f4">https://github.com/couchbase/docs/commit/b8094b5c61802fb4b76f0ae6c9f4979c5f1aa6f4</a> Added content: <br/> <br/> <a href="https://github.com/couchbase/docs/commit/b8094b5c61802fb4b76f0ae6c9f4979c5f1aa6f4">https://github.com/couchbase/docs/commit/b8094b5c61802fb4b76f0ae6c9f4979c5f1aa6f4</a> Karen, this isn&#39;t just about documentation, this is a bug that needs to be fixed in the product. deferring out of 2.0.2 Duplicate MB-4376 Date of First Response Tue, 29 Jan 2013 18:40:24 -0600 Flagged Rank 1997