You can start/stop/restart DNS service (named) via SSH using following commands on CentOS / RHEL / Fedora Linux:
To start DNS service (named) via SSH:
/etc/init.d/named start
To stop DNS service (named) via SSH:
/etc/init.d/named stop
To restart DNS service (named) via SSH:
/etc/init.d/named restart
To check current status:
/etc/init.d/named status
Please note, you will need root access of the server to restart DNS/named service. If you have other questions related to DNS server, you can join our community forum.