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From: Herbert Poetzl (herbert_at_13thfloor.at)
Date: Tue 07 Oct 2003 - 08:38:56 BST


On Mon, Oct 06, 2003 at 11:17:21PM +0000, Lyn St George wrote:
> Hallo
>
> Over the last couple of weeks a number of vservers have been
> triggering my monitoring system, because either services inside
> a vserver become invisible to a 'ps ax', or the entire vserver seems
> to have stopped when in fact it hasn't.
>
> Example: 2 minutes ago I got an alert for a 4th vserver having gone
> down, because a 'ps ax' from the host produced the line "x not running".
> Entering the server and then doing a 'ps ax' produced this:
>
> Server xxx is not running
> ipv4root is now xxx
> Host name is now xxx
> New security context is 1008
> [root_at_xxx /]ps ax
> PID TTY STAT TIME COMMAND
> 1 ? S 5:37 init [3]
> 12225 pts/21 S 0:00 /bin/bash -login
> 12284 pts/21 R 0:00 ps ax
>
> Despite this, everything is running, and ports 21, 22, 25, 80, 110 443 can
> all be connected to.
>
> What is plain is that the security context number is ridiculously high. On
> a 'good' vserver this number is something like 26 or 32. On the 'bad' ones,
> ie where 'ps ax' no longer shows the stuff that is running, this number is over
> 1000
>
> What is going on?? Does anybody have any ideas at all, or has anyone
> seen anything even remotely similar?
>
> (kernel 2.4.18, vserver v12. Uptime 145 days with no such problems ever
> over the last year or more. This host has 1Gb of memory, Athlon, current
> load average: 0.75, 0.81, 0.72)
>
> Any help will be greatly appreciated.

hmm, if this happens with 2.4.22 c17e too, we'll have to
look at it more closely, otherwise I would suggest to
upgrade ...

HTH,
Herbert

> -
> Cheers
> Lyn St George
> +---------------------------------------------------------------------------------
> + http://www.zolotek.net .. eCommerce hosting, consulting
> +----------------------------------------------------------------------------------


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