I am new to this whole network monitoring lark but have just installed zenoss 
2.0.6 because I want to get a near real time (say 5 seconds latency) graphical 
representation of some statistics coming from a custom MIB over a network.  

I have my MIB working fine, I can poll it using snmpwalk and it returns good 
values.  I have imported my MIB into zenoss which sees all the OIDs and names 
just fine, I have created data types and data points in the template for one of 
my end nodes running the MIB daemon, I have created 5 graphs to show 5 
different data types.  The first two ran ok for about half and hour, then 
stopped.  The next two have never shown any data, the last one runs fine.  I 
queried the RRD database which shows 'nan's for all the values which don't show 
on the graph so I can't fault the graph itself, it appears RRD is not getting 
the right values.  But if I query snmpwalk using an OID copy/pasted from zenoss 
it works fine.  Why would this be going wrong for 4 out of 5 graphs?

On a maybe related note, for the first couple of days of running this, the 
graphs (I'm on the default CPU utilization etc graphs now) would sometimes cut 
out.  The only way I found to start them again was run #/etc/init.d/zenoss 
restart .  Again the RRD Database would be full of 'nan's in those blank 
periods.  Is this likely related?

On a different note, I want to change the update rate to about 5 seconds.  I 
changed the 'SNMP Performance Cycle Interval' value for the localhost to 5 
seconds, pressed save and restarted zenoss for good measure and nothing 
happened.  I changed all the other values on that page to 5 seconds too and, 
not suprisingly, nothing happened.  I had a quick look at the code and, 
although I don't know any Python, it appears to me that it sets a variable 
perfsnmpCycleInterval to '5 * 60' by default so I assume it is not managing to 
set the variable to my value.  Any ideas why not?

Thanks for any help.  I have had much more success than I had with OpenNMS but 
I am just not quite where I need to be yet.

Richard

------------------------
 Richard Bowden




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