Since there are various types of system services (systemd, upstart, and lsb), Pacemaker supports a special service alias which intelligently figures out which one applies to a given cluster node.
This is particularly useful when the cluster contains a mix of systemd, upstart, and lsb.
In order, Pacemaker will try to find the named service as:
an LSB init script
a Systemd unit file
an Upstart job
