Desktop Environment : Configure VNC Server2023/02/24 |
Install VNC Server to connect to AlmaLinux Server with GUI from remote client computer.
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[1] | Install Tigervnc Server. |
[root@dlp ~]# dnf -y install tigervnc-server
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[2] | If Firewalld is running, allow VNC service. |
[root@dlp ~]# firewall-cmd --add-service=vnc-server success [root@dlp ~]# firewall-cmd --runtime-to-permanent success |
[3] | If SELinux is enabled, change policy. |
[root@dlp ~]#
vi vncsession.te # create new module vncsession 1.0; require { type default_t; type xdm_home_t; type vnc_session_t; class dir { add_name create write }; class file { create open write }; } #============= vnc_session_t ============== allow vnc_session_t default_t:dir { add_name write }; allow vnc_session_t default_t:file { create open write }; allow vnc_session_t xdm_home_t:dir create; checkmodule -m -M -o vncsession.mod vncsession.te [root@dlp ~]# semodule_package --outfile vncsession.pp --module vncsession.mod [root@dlp ~]# semodule -i vncsession.pp |
[4] | Configure Tigervnc with Systemd Unit like follows. Configure VNC settings on each user first, and next, start Systemd Unit with root privilege. |
# set VNC password [alma@dlp ~]$ vncpasswd Password: Verify: Would you like to enter a view-only password (y/n)? n
[alma@dlp ~]$
vi ~/.vnc/config # create new # session=(display manager you use) # securitytypes=(security options) # geometry=(screen resolution) session=gnome securitytypes=vncauth,tlsvnc geometry=800x600 |
[5] | Configure settings with root privilege ans start Systemd Unit. |
[root@dlp ~]#
vi /etc/tigervnc/vncserver.users # add to the end # specify [:(display number)=(username] as comments # display number 1 listens port 5901 # display number n + 5900 = listening port
#
# This file assigns users to specific VNC display numbers.
# The syntax is <display>=<username>. E.g.:
#
# :2=andrew
# :3=lisa
:1=alma
:2=redhat
# start systemd unit [root@dlp ~]# systemctl enable --now vncserver@:1 vncserver@:2
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[6] |
Install VNC Viewer on client computer to connect to VNC server.
This example is based on Windows 11 and UltraVNC. Download UltraVNC from the site below.
⇒ https://www.uvnc.com/downloads/ultravnc.html
After installing UltraVNC, click [UltraVNC Viewer] to run, then, following window is shown.Input [(Server's hostname or IP address):(display number)] like following example and then click the [Connect] button. |
[7] | VNC password is required to input for authentication. |
[8] | If successfully passed authentication, VNC session starts like follows. |
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