Cannot open pipe: /bin/ping
Subhendu Ghosh
sghosh at sghosh.org
Mon Nov 25 16:58:03 CET 2002
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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