Finding A Specific Host Object in objects.cacheThe file objects.cache (usually located in /usr/local/nagios/var/) contains all the Nagios objects that are defined in all of the cfg files. The special thing about objects.cache is that it shows the FINAL object after all templates have been taken into account. It's a great way to see what settings are applying when troubleshooting an issue. Here's a one line command that searches this file and finds the host object called "vCenter".
Command:
cat /usr/local/nagios/var/objects.cache | sed -rn "/define host \{/{:a;N;/}/{/.host_name.vCenter/p;d};ba}"
Output:
define host {
host_name vCenter
alias vCenter
address vcenter.box293.local
check_period 24x7
check_command check-host-alive
contact_groups admins
notification_period workhours
initial_state o
importance 0
check_interval 5.000000
retry_interval 1.000000
max_check_attempts 10
active_checks_enabled 1
passive_checks_enabled 1
obsess 1
event_handler_enabled 1
low_flap_threshold 0.000000
high_flap_threshold 0.000000
flap_detection_enabled 1
flap_detection_options a
freshness_threshold 0
check_freshness 0
notification_options r,d,u
notifications_enabled 1
notification_interval 120.000000
first_notification_delay 0.000000
stalking_options n
process_perf_data 1
action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_
retain_status_information 1
retain_nonstatus_information 1
}
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