|OS type and version||Rocky 8.7|
|Virtualmin version||7.3 Pro|
|Related packages||Postfix, Webmin|
This is more of a report than a request. I won’t necessarily call it a “bug report” because the configuration is unusual. But it’s probably something you’d want to know about.
server1.example.net hosts Web services for
example.com, but not mail.
server1.example.com host mail services for
example.com, but not Web.
In anticipation of a planned maintenance outage on the mail server,
server1.example.com, I enabled
server1.example.net as a backup mail server using instructions found here.
That seems to have worked as far as holding the mail was concerned.
When I logged back into Virtualmin as
root this morning, all functionality was missing. I didn’t take a screenshot because I hadn’t had my second cup of coffee and wasn’t thinking clearly, but all that was available on the Virtualmin side was “System Statistics” (which worked).
The virtual servers were not there.
The dropdown box was not there.
Nothing was there except “System Statistics” and the logout button.
The Webmin side of things looked normal; so I used that to restore the previous Postfix configuration. I’d made a backup of the most-recent Webmin configuration backup before setting up the backup mail server, not because I am wise, but because deep down I consider computers to be more like mistresses than wives. They’re a lot of fun, but not to be trusted.
Accordingly, I’d backed up the Webmin configuration backup so it wouldn’t be overwritten by a new backup on the next backup. Which suggests a possible improvement: It would be nice if the Webmin configuration backup supported versioning. But I digress.
In any case, restoring the Postfix configuration (essentially undoing the server’s role as a backup mail server) restored full Virtualmin functionality.
I then went into
server1.example.com, the server providing mail services, and disabled
server1.example.net as a backup mail server.