.. _example-rrdcached-systemd:

=====================================
 Systemd configuration for rrdcached
=====================================

This example sets up a dedicated rrdcached instance for munin.

If rrdcached stops, it is restarted.

A pre-start script ensures we have the needed directories

A post-start script adds permissions for the munin fastcgi process. This assumes that your fastcgi
graph process is running as the user "www-data", and that the file system is mounted with "acl".

::

    [Unit]
    Description=Munin rrdcached

    [Service]
    Restart=always
    User=munin
    PermissionsStartOnly=yes
    ExecStartPre=/usr/bin/install -d -o munin -g munin -m 0755 \
      /var/lib/munin/rrdcached-journal /run/munin
    ExecStart=/usr/bin/rrdcached \
      -g -B -b /var/lib/munin/ \
      -p /run/munin/munin-rrdcached.pid \
      -F -j /var/lib/munin/rrdcached-journal/ \
      -m 0660 -l unix:/run/munin/rrdcached.sock \
      -w 1800 -z 1800 -f 3600
    ExecStartPost=/bin/sleep 1 ; /bin/setfacl -m u:www-data:rw /run/munin/rrdcached.sock
    [Install]
    WantedBy=multi-user.target