Nagios Support Forum

So, I had an occasion to try using log2ndo because ndo2db was evidently not turned on in chkconfig and when someone rebooted the server it did not come up. So, Nagios went merrily along, but nothing was getting logged to the database. At first I panicked and then I realized that I have all of these ...

Or write a notification script that can differentiate between the types of alerts and send the alert to the appropriate address.

I was browsing my Nagios log for errors and found some broken up external commands. [Wed Aug 21 05:05:20 2013] Warning: Unrecognized external command -> P; [Wed Aug 21 05:05:20 2013] Warning: Unrecognized external command -> PROCESS_SERVICE; [Wed Aug 21 05:05:20 2013] Warning: Unrecognized external ...

sreinhardt wrote:OK, since we are running into issues potentially related in both threads, why don't you pm one of us a tar'd set of your configs to verify and work through some issues that they may have. This will likely be the easiest and quickest route.

I'll have to see if I can get approval for that.

sreinhardt wrote:Since you installed via yum, did you also install nagios-common for the default configs and such?

Yes

I tried disabling child_processes_fork_twice since I'm monitoring quite a bit of stuff and the docs say that this can help you realize some CPU savings. I'm running nagios in a VM with 4 cores and the load runs between 1 and 3. With child_processes_fork_twice disabled, the load ends up between 10 an...

Nagios 3.5.0 on RHEL 6.4 installed via yum. Nothing custom.

Yes, I know. I just didn't take the time to go all the way down the rabbit hole. define service{ name generic-service active_checks_enabled 1 passive_checks_enabled 1 parallelize_check 1 obsess_over_service 1 check_freshness 0 notifications_enabled 1 event_handler_enabled 1 flap_detection_enabled 1 ...

config excerpt: define service{ use generic-customer-poll host_name host1 service_description site_SITE1 Check check_command poll_site!$HOSTGROUPMEMBERS:site_SITE1$!$HOSTGROUPNOTES:site_SITE1$!$HOSTNAME$!community notes site_check } define command{ command_name poll_site command_line $USER1$/poll_si...

The service check is running a custom perl poller using Net::SNMP. Additionally, I also found that going into the GUI and disabling active checks and then re-enabling active checks will get it scheculed as well instead of just restarting Nagios.