Plesk 12.x / Linux :: CentOS 7 - 404 Not Found When Hitting Port 8443

I have been using managed servers for all of my webhosting career. I just decided to try to do it all on my own and of course, here come the growing pains.

I went with Linode for my new hosting provider. I followed their guides to get the initial setup done, minus setting up MariaDB.

I then went ahead and installed Plesk 12. The install went off without a hitch. But, now that I try to hit my hostname:8443, I get a 404.

I have done the following in an attempt to resolve the issue:

- Restart the server
- Restart the sw-cp-server
- Remove the /etc/sw-cp-server/conf.d/agent.conf (which didn't exist)

I do have the following firewalld rules in place:

firewall-cmd --zone=public--add-port=8443/tcp --permanent
firewall-cmd --zone=public--add-port=8447/tcp --permanent