[root@server21 ~]# service varnish restart
Redirecting to /bin/systemctl restart varnish.service
Failed to restart varnish.service: Unit not found.
This worked like 3 days ago, but today it stopped working. It works on other servers, but on this one it doesn't work.
I did df -h and I still have 600 gb left, so I am wondering what might have caused this.