check_pgsql - NRPE PostgreSQL check

By default NRPE includes a plugin (you need to enable it in the make config screen when installing net-mgmt/nagios-plugins) to check a PostgreSQL server. Follow the instructions on this page to enable it.

Configuring Nagios

Define a new service on the Nagios server, in /usr/local/etc/nagios/objects/services.cfg:

define service{
        use                             generic-service
        hostgroup_name                  postgresql-servers
        service_description             nrpe_check_pgsql
        check_command                   check_nrpe2!check_pgsql
}

The FreeBSD servers I monitor that has PostgreSQL installed are all members of the hostgroup postgresql-servers.

Configuring NRPE

Add the following line to /usr/local/etc/nrpe.cfg:

command[check_pgsql]=/usr/local/libexec/nagios/check_pgsql -H 10.16.255.64

Replacing 10.16.255.64 with the IP address the PostgreSQL server is listening on.

Remember to restart NRPE after changing the config:

sudo /usr/local/etc/rc.d/nrpe2 restart