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Re: Server crash [message #36555 is a reply to message #36550]

Tue, 30 June 2009 12:47

maratrus
Messages: 1495
Registered: August 2007
Location: Moscow

Senior Member

Hello,

Quote:

- it is possible that a misconfiguration in VEs can crash the server?

A misconfiguration mustn't crash the server. But it may drastically decrease performance.

Quote:

- it may be a bug in OpenVZ kernel?

Don't hesitate to make a new bug report if any bug is found.
http://bugzilla.openvz.org/

Quote:

My HN crashes every weekend at different times, this weekend it crashed 2 times... and my customers are not really happy

We have to be provided with textual logs describing the crash in detail.
A serial console might be very helpful to get the full crash output.
http://wiki.openvz.org/Remote_console_setup#Serial_console

Quote:

I think I have seen on the console an output like an "oops" (http://wiki.openvz.org/Oops) but I'm not sure that the logs do not see anything abnormal, except this:

tail /var/log/messages

These messages indicate that out of memory was invoked
http://en.wikipedia.org/wiki/Out_of_memory
http://linux-mm.org/OOM_Killer

But I cannot see any crash related things.
If it is an out-of-memory situation that bothers your customers so much you may have to set up user_beancounters parameters more accurately. The best thing I can suggest you is to read an article describing UBC in general and in detail.
http://wiki.openvz.org/UBC

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[Message index]

		Server crash By: dvazart on Tue, 30 June 2009 12:13
		Re: Server crash By: maratrus on Tue, 30 June 2009 12:47
		Re: Server crash By: dvazart on Tue, 30 June 2009 13:31
		Re: Server crash By: maratrus on Tue, 30 June 2009 15:39
		Re: Server crash By: dvazart on Wed, 01 July 2009 12:35
		Re: Server crash By: dvazart on Thu, 02 July 2009 06:33
		Re: Server crash By: maratrus on Thu, 02 July 2009 14:38
		Re: Server crash By: dvazart on Fri, 03 July 2009 07:21
		Re: Server crash By: maratrus on Fri, 03 July 2009 09:11

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