Nagios and Cluster Setup

Tarak Patel tarak.patel at ec.gc.ca
Thu Jul 6 19:56:14 CEST 2006


Hi all,

After playing with Nagios with simple single server setup I would like 
to get my hands dirty and configure Nagios for clusters. In my previous 
setup I was using Nagios to execute some home grown perl scripts to 
monitor a single remote system's various components. I simply configured 
nrpe on remote host and used another host to execute active checks. Now 
I would like to expand similar technic for a cluster but with a small 
modification. My current configuration is such that the interactive node 
of the cluster has a perl script that mimics DSH and launches a single 
check on each node. This single check bundles each individual component 
checks so that all components can be check in one shot. This method 
causes a problem when I would like to disable a single check on a single 
node. The other method was to launch a specific check on all nodes but 
this still does not solve the problem of disabling a single check on a 
single node.

The question I have is what would be the best method for me where I 
would like to have a setup where I have one central server running 
nagios/web, multiple distributed servers and for each distributed server 
many other simple nodes that simply launch checks on regular basis and 
report back to distributed server which then reports back to central 
server. I also want to have the freedom to launch active check from 
central server onto nodes individually (layer below the distributed server).

I was wondering if creating a setup where I would let each individual 
node perfom its checks (seperatly) and report to distributed server via 
NSCA and use NSCA on distributed server to report back to central 
server. Then how do I go about allowing central server to perform active 
check at the bottom level nodes.

Any help is greatly appriciated...

Thank you,

TP.


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