Re: snmp script extend cache

2009/3/23 [email protected]
<[email protected]>:
> Hi,

> override NET-SNMP-AGENT-MIB::nsCacheDefaultTimeout.0 integer 300
> override NET-SNMP-AGENT-MIB::nsCacheEnabled.0 integer 1
> extend check_dummy  /var/checks/check_dummy
> override NET-SNMP-EXTEND-MIB::nsExtendCacheTime."check_dummy" integer 300

Remember that "override" is concerned with what information the
agent will report back to an SNMP client.   The agent doesn't know
anything about what these values are supposed to mean - it's just
reporting back exactly what it's told to.


> Starting snmpd and querying for the information works in general. Thing
> is the cache seems to be limited to 5 seconds (according to the date
> differences in /tmp/snmp.watch).

Yes - that's the default cache timeout, I believe.


> But I want snmpd to listen to the settings in the snmpd.conf, so the
> cache should keep the results for 5 mins

But the agent doesn't use these figures internally.
You are overriding the real values, and telling the agent
to report something back if anyone asks.   That doesn't
mean that the agent knows to use this value internally.


If you want to change the cache timeout, you could try SETing the
nsExtendCacheTime dynamically.  That should change the internal
value that the agent *does* use.

Dave

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