Problem with OCP_daemon in distributes environment

michel.vdv at wxs.nl michel.vdv at wxs.nl
Tue Aug 16 21:22:10 CEST 2011


Dear readers,
 
I have a strange problem related to the use of OCP_daemon.
I've implemented this today on a "remote" nagios machine responsible for monitoring our LAN hosts.
Until now all messages and performance data was sent from that machine to our Central Nagios machine via obsess_over_hosts and obsess_over_services.
But because a lot of services on the remote host combined with relative short check_interval periods caused high service and host check latencies i've started looking for an alternative and read about OCP_daemon.
I followed the install instructions and sending data via OCP_daemon works fine and very fast, also the remote nagios machine's latencies stay low.
However, the central server stays processing all passive service and host check results (also from other send_nsca based hosts) but no longer executes it's own ACTIVE checks.
Is soon as i stop nagios on the remote monitor and restart nagios on the central server it starts executing ACTIVE checks again.
The load on both servers remained about the same since OCP_daemon and the only thing i noticed is that the number of buffers/slots used for the external command file (nagios.cmd) on the central server reaches rather higher values than before but no more than 30 - 40% of the available 4096 slots.
 
Please advice me.
 
Michel
 
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