Edit file File name : mdmonitor.service Content :[Unit] Description=Software RAID monitoring and management ConditionPathExists=/etc/mdadm.conf [Service] Type=forking PIDFile=/var/run/mdadm/mdadm.pid EnvironmentFile=-/etc/sysconfig/mdmonitor ExecStart=/sbin/mdadm --monitor --scan -f --pid-file=/var/run/mdadm/mdadm.pid [Install] WantedBy=multi-user.target Save