Nagios notifications definitions
- by Colin
I am trying to monitor a web server in such a way that I want to search for a particular string on a page via http. The command is defined in command.cfg as follows
# 'check_http-mysite command definition'
define command {
command_name check_http-mysite
command_line /usr/lib/nagios/plugins/check_http -H mysite.example.com -s "Some text" }
# 'notify-host-by-sms' command definition
define command {
command_name notify-host-by-sms
command_line /usr/bin/send_sms $CONTACTPAGER$ "Nagios - $NOTIFICATIONTYPE$ :Host$HOSTALIAS$ is $HOSTSTATE$ ($OUTPUT$)"
}
# 'notify-service-by-sms' command definition
define command {
command_name notify-service-by-sms
command_line /usr/bin/send_sms $CONTACTPAGER$ "Nagios - $NOTIFICATIONTYPE$: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ ($OUTPUT$)"
}
Now if nagios doesn't find "Some text" on the home page mysite.example.com, nagios should notify a contact via sms through the Clickatell http API which I have a script for that that I have tested and found that it works fine.
Whenever I change the command definition to search for a string which is not on the page, and restart nagios, I can see on the web interface that the string was not found. What I don't understand is why isn't the notification sent though I have defined the host, hostgroup, contact, contactgroup and service and so forth. What I'm I missing, these are my definitions, In my web access through the cgi I can see that I have notifications have been defined and enabled though I don't get both email and sms notifications during hard status changes.
host.cfg
define host {
use generic-host
host_name HAL
alias IBM-1
address xxx.xxx.xxx.xxx
check_command check_http-mysite
}
*hostgroups_nagios2.cfg*
# my website
define hostgroup{
hostgroup_name my-servers
alias All My Servers
members HAL
}
*contacts_nagios2.cfg*
define contact {
contact_name colin
alias Colin Y
service_notification_period 24x7
host_notification_period 24x7
service_notification_options w,u,c,r,f,s
host_notification_options d,u,r,f,s
service_notification_commands notify-service-by-email,notify-service-by-sms
host_notification_commands notify-host-by-email,notify-host-by-sms
email [email protected]
pager +254xxxxxxxxx
}
define contactgroup{
contactgroup_name site_admin
alias Site Administrator
members colin
}
*services_nagios2.cfg*
# check for particular string in page via http
define service {
hostgroup_name my-servers
service_description STRING CHECK
check_command check_http-mysite
use generic-service
notification_interval 0 ; set > 0 if you want to be renotified
contacts colin
contact_groups site_admin
}
Could someone please tell me where I'm going wrong.
Here are the generic-host and generic-service definitions
*generic-service_nagios2.cfg*
# generic service template definition
define service{
name generic-service ; The 'name' of this service template
active_checks_enabled 1 ; Active service checks are enabled
passive_checks_enabled 1 ; Passive service checks are enabled/accepted
parallelize_check 1 ; Active service checks should be parallelized (disabling this can lead to major performance problems)
obsess_over_service 1 ; We should obsess over this service (if necessary)
check_freshness 0 ; Default is to NOT check service 'freshness'
notifications_enabled 1 ; Service notifications are enabled
event_handler_enabled 1 ; Service event handler is enabled
flap_detection_enabled 1 ; Flap detection is enabled
failure_prediction_enabled 1 ; Failure prediction 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
notification_interval 0 ; Only send notifications on status change by default.
is_volatile 0
check_period 24x7
normal_check_interval 5
retry_check_interval 1
max_check_attempts 4
notification_period 24x7
notification_options w,u,c,r
contact_groups site_admin
register 0 ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL SERVICE, JUST A TEMPLATE!
}
*generic-host_nagios2.cfg*
define host{
name generic-host ; The name of this host template
notifications_enabled 1 ; Host notifications are enabled
event_handler_enabled 1 ; Host event handler is enabled
flap_detection_enabled 1 ; Flap detection is enabled
failure_prediction_enabled 1 ; Failure prediction 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
max_check_attempts 10
notification_interval 0
notification_period 24x7
notification_options d,u,r
contact_groups site_admin
register 1 ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL HOST, JUST A TEMPLATE!
}
