Setup on the linumuster.net server

On the server, the check_mk client must be installed, which sends the monitoring server the performance data on demand.

Log on to the server console as an administrative user and install check-mk-agent and xinetd:

$ apt-get install check-mk-agent xinetd

The xinetd must then be configured so that the monitoring data can be queried. To do this, edit the file /etc/xinetd.d/check_mk as follows:

service check_mk
{
        type           = UNLISTED
        port           = 6556
        socket_type    = stream
        protocol       = tcp
        wait           = no
        user           = root
        server         = /usr/bin/check_mk_agent

        # If you use fully redundant monitoring and poll the client
        # from more then one monitoring servers in parallel you might
        # want to use the agent cache wrapper:
        #server         = /usr/bin/check_mk_caching_agent

        # configure the IP address(es) of your Nagios server here:
        # EDIT: KANN GEAENDERT WERDEN
        # Wenn der MoniPi eine feste IP-Adresse hat, ist es sinnvoll,
        # das Kommentarzeichen an der nächsten Zeile zu entfernen und dort
        # die IP-Adresse des Monitoring Servers einzutragen
        #only_from      = 127.0.0.1 10.17.1.3

        # Don't be too verbose. Don't log every check. This might be
        # commented out for debugging. If this option is commented out
        # the default options will be used for this service.
        log_on_success =

        # EDIT: MUSS GEAENDERT WERDEN von "yes" auf "no"
        disable        = no
}

The limitation of access to certain IP addresses is useful for security reasons, but can only be carried out if the monitoring server (MoniPi) has a permanent IP address.

Restart the xinetd after the customizations:

$ service xinetd restart

To check whether the setup was successful, you can use the command []

$ telnet localhost 6556

This should result in a longer output of performance data:

Footnotes

[1]	You may also need to reinstall the telnet command: apt-get install telnet