Re: [vserver] vxW errors

From: Roderick A. Anderson <>
Date: Thu 08 May 2008 - 18:30:31 BST
Message-ID: <>

Roderick A. Anderson wrote:
> System: CentOS 5 with all current updates from the CentOS
> {base,update,etc}, dhozac-vserver, and rpmforge repositories.
> I have been noticing the following type of errors in the host log files
> coming from several guests.
> May 8 09:01:01 admin kernel: vxW: [�crond�,6875:#1195|1195|1195]
> messing with the procfs.

Brain-impaction. Solution found.

Seems this really was only happening on /some/ guests and is tied to
getting ssh access into a guest. I put the sed commands into a script
file which, during guest creation process, is copied to the guest,
executed, then removed. I have several guests that were created before
I discovered this and don't need to be accessed vis ssh so were not
fixed. The problem manifests itself in other places but I never never
caught it until now.

Thanks for reading the posts and please don't throw any rocks or sticks
at me.


> 1195 is the context for a guest but I see similar messages for other 
> guests.
> Researching, I see it is happening when crond runs the entires in 
> /etc/crontab that call run-parts and where the corresponding 
> cron.{hourly,daily,weekly,monthly} directory has no entries.
> Looking a bit more I see entires in the guest's /var/log/cron file like 
> this:
> May  8 09:01:01 rptas crond[6874]: Cannot make/remove an entry for the 
> specified session
> May  8 09:01:01 rptas crond[6874]: CRON (root) ERROR: failed to open PAM 
> security session: Success
> May  8 09:01:01 rptas crond[6874]: CRON (root) ERROR: cannot set ecurity 
> context
> Each of the files in the hosts /etc/pam.d directory have had the 
> following sed script applied to them.
> sed --in-place -e  "s/^session.*required.* 
> session\trequired\" /etc/pam.d/*
> This came from one of the install HOWTOs and as I reflect on it now I 
> wonder what it really is accomplishing.   I know I've had problems with 
> getting a ssh login to a guest before applying this but do I need to do 
> it in the guests also?
> Any clues as to why I'm getting the entires?  And possibly the fix?
> Thanks,
> Rod
Received on Thu May 8 18:30:49 2008
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