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Resolution: Unresolved
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Minor
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None
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Professional Edition
Description
We had a device that was taking a long time to poll via SNMP. Eventually we had 6 poller processes running for just that one device and none of them were finishing. The logs in the server said
(URGENT: poller-wrapper.py poller not started because already running 6 processes, load average (5min) 11.41)
All polling on the server stopped until I killed those processes. Then it did it again. I eventually removed that device and resolved the issue. I'm wondering if there is a timer or setting I can set to kill these processes before they cause an issue like this again?
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This is protection against a huge processes increase and stop working for server. Exactly for such cases as your.
Normally, poller-wrapper not should run at same time more than 4 processes, but it still possible if server LA less than 10.
These options configurable (see: Global Settings -> Polling -> Wrapper).
But, for your case need to know, why polling for that device was so long.
Required debug:
./poller.php -d -h <broken_device>
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The device in question is having some issues. I am unable to login to it and it is running very slow. To fix the issue I removed it from Observium. I added it back to get the test debug file you asked for. How does the max poller wrapper processes work? Also what stopped it at 6 total processes? Is that the default? Is there away to configure it to just kill poller-wrapper processes that have run too long?