I refer to the page below.
https://github.com/coredns/deployment/blob/master/systemd/coredns.service
add coredns user
[root@cent7devops ~]# useradd coredns -s /sbin/nologin -c 'coredns user'
create service file for systemd
[root@cent7devops ~]# ls -l /etc/systemd/system/coredns.service -rw-r--r-- 1 root root 464 Aug 16 08:27 /etc/systemd/system/coredns.service [root@cent7devops ~]#
[root@cent7devops ~]# cat /etc/systemd/system/coredns.service [Unit] Description=CoreDNS DNS server Documentation=https://coredns.io After=network.target [Service] PermissionsStartOnly=true LimitNOFILE=1048576 LimitNPROC=512 CapabilityBoundingSet=CAP_NET_BIND_SERVICE AmbientCapabilities=CAP_NET_BIND_SERVICE NoNewPrivileges=true User=coredns WorkingDirectory=/home/coredns ExecStart=/usr/bin/coredns -conf=/etc/coredns/Corefile ExecReload=/bin/kill -SIGUSR1 $MAINPID Restart=on-failure [Install] WantedBy=multi-user.target [root@cent7devops ~]#
start coredns service
check status
[root@cent7devops ~]# systemctl is-active coredns unknown [root@cent7devops ~]#
start coredns service
[root@cent7devops ~]# systemctl start coredns [root@cent7devops ~]# systemctl is-active coredns active [root@cent7devops ~]#
