How to install Nagios on CentOS?
Host and host groups CFG
[root@yourmachine nagios] vim hosts.cfg
# Generic host definitions
define host{
name generic-host ; Generic template name
notifications_enabled 1 ; Host notifications are enabled
event_handler_enabled 1 ; Host event handler is enabled
flap_detection_enabled 1 ; Flap detection is enabled
process_perf_data 1 ; Process performance data
retain_status_information 1 ; Retain status information across program restarts
retain_nonstatus_information 1 ; Retain non-status information across program restarts
register 0 ; DONT REGISTER THIS DEFINITION – ITS NOT A REAL HOST, JUST A TEMPLATE!
}
# This creates a generic template that any host can use.
# Notifies never, checks 15 times before showing critical on CGI interface,
define host{
name basic-host
use generic-host
check_command check-host-alive
max_check_attempts 15
notification_interval 0
notification_period none
notification_options n
register 0
}
# This creates a generic host that your routers can use
# monitors host(s) 24×7, notifies on down and recovery, checks 15 times before going critical,
# notifies the contact_group every 30 minutes
define host{
name your-routers-host
use generic-host
check_command check-host-alive
max_check_attempts 15
notification_interval 30
notification_period 24×7
notification_options d,r
register 0
}
define host{
use basic-host
host_name mymachine1
alias mymachine1
address 192.168.100.101
contact_groups einsteins
# notification_options d,r #overrides the basic-host option
}
define host{
use your-routers-host
host_name router1
alias router1
address 192.168.100.100
contact_groups einsteins
}
