controlling services by hostgroup?

Marcus Fleige marcus.fleige at de.rhenus.com
Tue Feb 5 10:25:24 CET 2008


Hi there,

Nice to see some other people had the same idea to simplify their 
config. :-)

Additionally i can say, that i order hosts in multiple hostgroups to 
stick them together logically. For example:

HostA and Host B are both members of server-hp, os-linux, net-drbd, 
net-bond0, task-oracle.

Both belong to the same Project along with some other hosts (routers, 
switches, sensors...), so all of those machines belong to a hostgroup 
"ProjectA", combining them to a logical unit.

As far as i can see, it doesn't bring up any performance issues in 
Nagios 3.0(b7) to add a host to multiple hostgroups. Back in the old 
days, service groups rendered my nagios installation (2.3) to a nearly 
unusable state by growing service latencies to incredible numbers.
Now, i'm working with ~600 hosts and ~5400 services with a latency of 
1.6 secs, having large numbers of hosts in multiple hostgroups.

Regards,

Marcus

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