Installing TightVNC server for root user and enabling same, every step is performed as root only.
Install VNC with the following command
yum install tigervnc-server
Set password for VNC (no need to enable viewing only) with the following command
vncpasswd
Copy VNC service configuration file to systemd with the following command
cp /lib/systemd/system/vncserver@.service /etc/systemd/system/vncserver@:1.service
Edit VNC service configuration file with following command
vi /etc/systemd/system/vncserver@\:1.service
Add the following lines after Type=simple. and hashout earlier similar lines present there.
ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
ExecStart=/sbin/runuser -l root -c "/usr/bin/vncserver %i -geometry 1280x1024"
PIDFile=/home/root/.vnc/%H%i.pid
ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
Save file.
Reload systemd enter following commands one by one. (if you are getting any issues in the second command mostly you did a mistake in config file.)
systemctl daemon-reload
systemctl start vncserver@:1
systemctl status vncserver@:1
systemctl enable vncserver@:1
Add exception in firewall with following commands (if any) for allowing VNC.
firewall-cmd --add-port=5901/tcp
firewall-cmd --add-port=5901/tcp --permanent
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