Restarts resetting soft critical states
Frost, Mark {PBG}
mark.frost1 at pepsi.com
Thu Oct 29 20:50:22 CET 2009
You think you know an application and every once in a while you get a surprise...
I'm running Nagios 3.0.6 in a distributed configuration. We had a host that was unpingable starting at 14:45. It was configured to try the ping until it reached 10 failures, then send us an alert. At the time this was going on, I was making some changes to the configuration (other hosts/services) and doing restarts to have the changes take effect. These restarts would have occurred both on the distributed node and the reporting server.
>From looking at the history of this host, it appears that the soft criticals were logged, but each time the server was restarted, it reset the counter:
Host Down[10-29-2009 15:14:56] HOST ALERT: psplunk2;DOWN;HARD;10;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 15:13:26] HOST ALERT: psplunk2;DOWN;SOFT;9;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 15:12:12] HOST ALERT: psplunk2;DOWN;SOFT;8;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 15:10:44] HOST ALERT: psplunk2;DOWN;SOFT;7;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 15:09:30] HOST ALERT: psplunk2;DOWN;SOFT;6;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 15:08:24] HOST ALERT: psplunk2;DOWN;SOFT;5;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 15:07:08] HOST ALERT: psplunk2;DOWN;SOFT;4;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 15:06:04] HOST ALERT: psplunk2;DOWN;SOFT;3;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 15:04:56] HOST ALERT: psplunk2;DOWN;SOFT;2;FPING CRITICAL - psplunk2. (loss=100% )
Program Start[10-29-2009 15:03:42] Nagios 3.0.6 starting... (PID=932)
Program End[10-29-2009 15:03:41] Caught SIGTERM, shutting down...
Host Down[10-29-2009 15:02:33] HOST ALERT: psplunk2;DOWN;SOFT;7;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 15:01:23] HOST ALERT: psplunk2;DOWN;SOFT;6;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 15:00:05] HOST ALERT: psplunk2;DOWN;SOFT;5;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 14:59:05] HOST ALERT: psplunk2;DOWN;SOFT;4;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 14:57:57] HOST ALERT: psplunk2;DOWN;SOFT;3;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 14:56:55] HOST ALERT: psplunk2;DOWN;SOFT;2;FPING CRITICAL - psplunk2. (loss=100% )
Program Start[10-29-2009 14:56:19] Nagios 3.0.6 starting... (PID=31184)
Program End[10-29-2009 14:56:17] Caught SIGTERM, shutting down...
Host Down[10-29-2009 14:55:47] HOST ALERT: psplunk2;DOWN;SOFT;6;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 14:54:37] HOST ALERT: psplunk2;DOWN;SOFT;5;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 14:53:27] HOST ALERT: psplunk2;DOWN;SOFT;4;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 14:52:17] HOST ALERT: psplunk2;DOWN;SOFT;3;FPING CRITICAL - psplunk2. (loss=100% )
Host Down[10-29-2009 14:51:17] HOST ALERT: psplunk2;DOWN;SOFT;2;FPING CRITICAL - psplunk2. (loss=100% )
Program Start[10-29-2009 14:50:49] Nagios 3.0.6 starting... (PID=30236)
Program End[10-29-2009 14:50:48] Caught SIGTERM, shutting down...
Host Down[10-29-2009 14:50:07] HOST ALERT: psplunk2;DOWN;SOFT;4;FPING CRITICAL - psplunk2. (loss=100% )
Service Critical[10-29-2009 14:49:51] SERVICE ALERT: psplunk2;Splunk Daemon;CRITICAL;HARD;1;CHECK_NRPE: Socket timeout after 10 seconds.
Host Down[10-29-2009 14:48:59] HOST ALERT: psplunk2;DOWN;SOFT;3;FPING CRITICAL - psplunk2. (loss=100% )
Service Critical[10-29-2009 14:48:43] SERVICE ALERT: psplunk2;Time;CRITICAL;HARD;1;CHECK_NRPE: Socket timeout after 15 seconds.
Service Critical[10-29-2009 14:48:15] SERVICE ALERT: psplunk2;Load Average;CRITICAL;HARD;1;CHECK_NRPE: Socket timeout after 10 seconds.
Host Down[10-29-2009 14:47:57] HOST ALERT: psplunk2;DOWN;SOFT;2;FPING CRITICAL - psplunk2. (loss=100% )
Service Critical[10-29-2009 14:47:41] SERVICE ALERT: psplunk2;Network Time Daemon;CRITICAL;HARD;1;CHECK_NRPE: Socket timeout after 10 seconds.
Service Critical[10-29-2009 14:47:31] SERVICE ALERT: psplunk2;Free Memory;CRITICAL;HARD;1;CHECK_NRPE: Socket timeout after 20 seconds.
Program Start[10-29-2009 14:47:10] Nagios 3.0.6 starting... (PID=29609)
Program End[10-29-2009 14:47:09] Caught SIGTERM, shutting down...
Host Down[10-29-2009 14:46:48] HOST ALERT: psplunk2;DOWN;SOFT;2;FPING CRITICAL - psplunk2. (loss=100% )
Service Critical[10-29-2009 14:46:22] SERVICE ALERT: psplunk2;/opt/splunk;CRITICAL;HARD;1;CHECK_NRPE: Socket timeout after 10 seconds.
Service Critical[10-29-2009 14:46:22] SERVICE ALERT: psplunk2;/opt/splunk_index1;CRITICAL;HARD;1;CHECK_NRPE: Socket timeout after 10 seconds.
Host Down[10-29-2009 14:45:48] HOST ALERT: psplunk2;DOWN;SOFT;1;FPING CRITICAL - psplunk2. (loss=100% )
The end result being that instead of getting an alert that this host was down in approximately 10 minutes, we got notified in 30 minutes -- essentially as soon as I left the server alone long enough for it to go through 10 failures.
Both the reporting server and the distributed node share the same attributes for retention and soft states:
soft_state_dependencies=0
passive_host_checks_are_soft=1
retain_state_information=1
use_retained_program_state=1
use_retained_scheduling_info=1
retained_host_attribute_mask=0
retained_service_attribute_mask=0
retained_process_host_attribute_mask=0
retained_process_service_attribute_mask=0
retained_contact_host_attribute_mask=0
retained_contact_service_attribute_mask=0
While I would assume the restarts would disrupt Nagios a bit what with having to do start-time tasks again, I would not have expected that it would "start over" with the status of some checks.
What am I missing here?
Thanks
Mark
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