I recently transferred an Icinga installation from a 4 CPU processor to a much
faster 24 CPU system. The Icinga configuration remained unchanged. The load
average on the old box was running at 30 - 40, on the new system the same
config runs a load average of 0.5 to 1.5 so Icinga is getting through the
checks faster than previously.
I'm starting to get the following errors after icinga has been up for a while:
[1309918540] Warning: The check of service 'PING_BRANCH' on host 'Calamvale'
could not be performed due to a fork() error: 'Resource temporarily
unavailable'. The check will be rescheduled.
[1309918540] fork error
[1309918540] Warning: The check of service 'PING_BRANCH' on host 'Kewdale'
could not be performed due to a fork() error: 'Resource temporarily
unavailable'. The check will be rescheduled.
[1309918540] fork error
[1309918540] fork error
The icinga user has virtually unlimited processes and files limits
[icinga@xxx ~]$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 257720
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1000000
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 10240
cpu time (seconds, -t) unlimited
max user processes (-u) 1000000
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
The system has plenty of memory free
[icinga@xxx ~]$ free
total used free shared buffers cached
Mem: 33002536 11273960 21728576 0 638248 2901288
-/+ buffers/cache: 7734424 25268112
Swap: 4194296 0 4194296
Can anyone point me to where to look next?
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