I've been happily using Rex for several years now to manage several servers but I have suddenly run into a problem I can't solve. I like to use standard repositories and my servers are currently running Ubuntu 18.04, so I am currently using rex version 1.6.0.
One of the things I do is every night I verify that several options in /etc/ssh/sshd_config are set correctly and if there are any changes then I restart the service. One of the servers just started throwing a "Service ssh.service not found" error even though I changed nothing on that server. None of the other servers are having that issue and unfortunately I can't figure out how rexify finds a service to try and figure out why it thinks it doesn't exist. I have tried reinstalling openssh-server and rebooting the server, ssh works just fine, and I can restart the service just fine on the command line.
Any help is greatly appreciated.