fork errors

[Terry]

This is RHEL 3.

On 9/2/05, Adams, Russell L. <RLAdams at kelsey-seybold.com> wrote:
> What distro?
> 
> I had issues on Debian Woody with fork errors, and had to update some
> values which improved the situation but never actually fixed it.
> 
> In sysctl.conf:
> 
> kernel/threads-max = 100000
> 
> In /etc/security/limits:
> 
> root            soft    nproc           1024
> nagios          soft    nproc           1024
> root            hard    nproc           2048
> nagios          hard    nproc           2048
> 
> This kernel threads value helped, but there seems that there's another
> value hardcoded into the kernel that can only be changed via
> recompile. I can't remember what value that was, but it was set way
> too low in the default 2.4 kernel from Debian for Woody.
> 
> I've been meaning to see what happens with Sarge.
> 
> Russell
> 
> 
> On Thu, Sep 01, 2005 at 01:13:20PM -0500, Terry wrote:
> > Hello,
> >
> > I have been having this issue for quite some time.  For some unknown
> > reason, nagios stops performing checks with these errors:
> >
> > [1125536952] Warning: The check of service 'PING' on host 'hostname'
> > could not be performed due to a fork() error.  The check will be
> > rescheduled.
> >
> > All checks fail like this until nagios is restarted.  When this
> > problem is occuring I can run the service checks manually both as the
> > nagios user and as the root user.  There are no resource problems that
> > I can see at the time.  We do not appear to be hitting a limit with
> > open files or anything like that either.  The nagios mirrors the root
> > user in that area.
> >
> > What could be wrong?
> >
> > Thanks!
> >
> >
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> 
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September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
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Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
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