.. program:: munin-update
munin-update is the primary Munin component. It is run from the :ref:`munin-cron` script.
This script is responsible for contacting all the agents (munin-nodes) and collecting their data. Upon fetching the data, munin-update stores everything in RRD files - one RRD files for each field in each plugin.
Running munin-update with the --debug flag will often give plenty of hints on what might be wrong.
munin-update is a component in the Munin server.
.. option:: --config_file <file> Use <file> as the configuration file. [/etc/munin/munin.conf]
.. option:: --debug If set, log debug messages. Can be negated with --nodebug [--nodebug]
.. option:: --fork If set, will fork off one process for each host. Can be negated with --nofork [--fork]
.. option:: --host <host> Limit fetched data to those from <host<gt>. Multiple --host options may be supplied. [unset]
.. option:: --service <service> Limit fetched data to those of <service>. Multiple --service options may be supplied. [unset]
.. option:: --timeout <seconds> Set the network timeout to <seconds>. [180]
.. option:: --help Print the help message then exit.
.. option:: --version Print version information then exit.