cat /etc/redhat-release
sudo yum update
sudo yum install wget -y
wget https://downloads.plex.tv/plex-media-server-new/1.19.4.2902-69560ce1e/redhat/plexmediaserver-1.19.4.2902-69560ce1e.x86_64.rpm
sudo yum install plexmediaserver*.rpm -y
sudo systemctl start plexmediaserver
sudo systemctl enable plexmediaserver
アクセスして確認
open http://localhost:32400/web/
こちらもおススメ