{{tag>nagios monitoring}}

====== Add new check on localhost (nagios itself) ======
1. Define new command in ///usr/local/nagios/etc/commands///

<code>
define command {
    command_name    check_my_service
    command_line    $USER1$/check_http -H example.com -u "http://example.com/health/someapi/" -a <username>:<password> 
}
</code>

Above is example for checking http with authorization (see ''check_http --help'' for options)

2. Add a check with the name of the command that you defined above to ///usr/local/nagios/etc/services///

<code>
define service{
    use                             generic-service
    service_description             Check for my new service
    check_command                   check_my_service
    host_name                       localhost
}

</code>

====== Tested on ======
  * Nagios® Core™ 4.2.2
  * Debian 11

====== See also ======
  * [[wiki:add_new_nagios_check_remote_host|Add new nagios check on remote host]]
====== References ======