Cannot open pipe: /bin/ping

[Carroll, Jim P [Contractor]]

If the Nagios server is running on Linux, you might want to set the
following in /etc/rc.d/rc.local:

   echo setting tcp_keepalive_time
   echo 360 > /proc/sys/net/ipv4/tcp_keepalive_time

(assuming your installation has a larger value before you tamper with it.)

jc

> -----Original Message-----
> From: Subhendu Ghosh [mailto:sghosh at sghosh.org]
> Sent: Monday, November 25, 2002 9:58 AM
> To: nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] Cannot open pipe: /bin/ping
> 
> 
> Increase the number of open files to 8192 at leat and also check the 
> number of inodes  ("sysctl -a" on linux fpr current settings)
> 
> -sg
> 
> On Mon, 25 Nov 2002, Brian Wilson wrote:
> 
> > 
> > We experienced a major outage today (>700 devices) and 
> nagios seemed to
> > not be able to keep up with the notifications.  We had 
> about 70 services
> > with UNKNOWN status with the message "Cannot open pipe:  
> /bin/ping".  I'm
> > assuming this is a ulimit problem because RAM, swap and CPU 
> seem to be ok.
> > So here are the limits currently imposed for the nagios user:
> > 
> > $ ulimit -a
> > core file size        (blocks, -c) 0
> > data seg size         (kbytes, -d) unlimited
> > file size             (blocks, -f) unlimited
> > max locked memory     (kbytes, -l) unlimited
> > max memory size       (kbytes, -m) unlimited
> > open files                    (-n) 1024
> > pipe size          (512 bytes, -p) 8
> > stack size            (kbytes, -s) 8192
> > cpu time             (seconds, -t) unlimited
> > max user processes            (-u) 256
> > virtual memory        (kbytes, -v) unlimited
> > 
> > 
> > Does anyone have any recommendations for changing any of the above.
> > Nagios is the only thing running on our machines, so it 
> should be able to
> > have whatever resources it wants.
> > 
> > Anyone have a good way of changing these limits for the 
> nagios user?  I'm
> > assuming this would have to be done in the startup script.
> > 
> > Thanks in advance,
> > Brian
> > 
> > --
> > Brian Wilson  <wilson at ncsu.edu>      Network Analyst
> > Communication Technologies, ATD      W: 919.513.3472
> > North Carolina State University      www.ncstate.net
> > 
> > 
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> 
> 
> 
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