Re: newbie questions: monitoring with cacti

2009/5/11  <[email protected]>:
> 4) I tested using: snmpwalk -v 2c -c COMMUNITY_STRING_HERE nirvana system

That output shows that the agent is reporting the information for the
'system' group.
What happens if you run the same query, but looking at  'interfaces'
or  'host',
or 'cpu' etc ?


> 5) I installed cacti and configured a few hosts using the "ucd/net"
> host and graph templates, using SNMP v1 and specifying the correct
> community string.  There were graph templates for CPU usage, Load
> Average, Memory usage.
>
> Now, the graphing functions appear to be working, but there's no values
> being stored in them, which suggests to me that my SNMP configuration
> is not providing the necessary data for the graphs.

Hence running 'snmpwalk' against them, to see whether there's anything
being reported.


> In addition, there are two important system statistics, interface
> statistics and monitored partitions, that I'd like to graph.

Again - the first step is to check whether the agent is reporting this
information.   You can't start monitoring things until this is working.



> I'm suspicious that the "paranoid" security group defined in
> snmpd.conf simply isn't providing the necessary information.

That was my immediate suspicion too.
My initial guess was that the default configuration will give
access to the 'system' group only  (or 'system' + 'hrSystem'),
and anything else needs to be explicitly configured.
    This is confirmed by your snmpd.conf file.

Try uncommenting the line

    com2sec readonly  default         public

(replacing "public" with a suitable community string)

Alternatively, try adding a line to the snmpd.conf file

     rocommunity   someCommunityString

Either of these would allow access to *everything*.


>  If that's true, should I start by reading up on the snmpd.conf manpages?

Either the access control section of this man page, or the access control
entries in the project FAQ.

Dave

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