Passive host results & soft states?
Mike Hamrick
mikeh at muppetlabs.com
Tue Apr 24 13:50:47 CEST 2007
Howdy,
Host A is a server which sends passive host/service results to host B
via NSCA. When a single host check fails on host C (a machine
monitored by host A) host A considers host C to be a SOFT state, where
host B (the one that actually sends notifications) considers host C to
be in a HARD state. This causes me a lot of problems because often
just one host check will fail, yet I still get a notification.
Here are some log entries that illustrate this:
Log entry from host A:
Wed Mar 21 02:29:02 2007 HOST ALERT:
prod-mysql-1a;DOWN;SOFT;1;CRITICAL - Host Unreachable (prod-mysql-1a)
Log entry from host B:
Wed Mar 21 02:29:04 2007 EXTERNAL COMMAND:
PROCESS_HOST_CHECK_RESULT;prod-mysql-1a;1;CRITICAL - Host Unreachable (prod-mysql-1a)
Wed Mar 21 02:29:04 2007 HOST ALERT:
prod-mysql-1a;DOWN;HARD;1;CRITICAL - Host Unreachable (prod-mysql-1a)
Host A defines its hosts using this template:
define host {
name server
check_command check-host-alive
failure_prediction_enabled 1
max_check_attempts 4
notification_period 24x7
freshness_threshold 250s
contact_groups admins
notification_period 24x7
notification_interval 0
notification_options d,u,r
check_interval 4
register 0
}
Host B defines its hosts using this template:
define host {
name remote-host-template
active_checks_enabled 0
check_period 24x7
max_check_attempts 4
notification_period 24x7
notification_interval 5
notification_options d,r
failure_prediction_enabled 1
check_command service_is_stale
register 0
}
Thanks for any help!
Mike
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