Getting Plex Media Server working under EL7 is an absolute breeze. Here are the steps needed to get your own server up and rocking.
This is getting PMS installed via my yum repository.
sudo yum install https://schotty.com/yum/plex_el7/schotty-plex-el7-release-1-1.noarch.rpm sudo yum makecache sudo yum install plexmediaserver
FIX THE FIREWALL TO ALLOW PMS
sudo firewall-cmd --permanent --add-port=32400/tcp sudo firewall-cmd --reload
CREATE PLEX SYSTEM GROUP
This is at your discretion as to what to name it, but you will need a dedicated plex group. Ensure that your media folder(s) have group ownership of this media group account.
sudo groupadd media sudo usermod -G media plex sudo usermod -G media YOUR-PRIMARY-USER
ENABLE AND START PMS DAEMON
sudo systemctl enable plexmediaserver sudo systemctl start plexmediaserver
LOGIN & CONFIGURE
Then in a browser navigate to your server in web browser:
Then proceed to configure Plex as you see fit.
Firefox has an issue with HTML5, so disable that in your web browser if you are having issues. This is a client side issue, not a server side one. Chrome and Edge do not currently have this bug.
One thing that may be an issue is your permissions on your media. A simple fix would be to allow owner & group full rwx access, and others rx:
sudo chmod -R 775 /media/files/location/ sudo chmod -R YOUR-PRIMARY-USER:media /media/files/location/