Tag: vnc

  • Install Xfce VNC remote desktop on CentOS 7

    Install Xfce VNC remote desktop on CentOS 7

    Xfce is a lightweight linux desktop environment. You can install Xfce on a remote server or virtual machine, connect to it using VNC to use it as a desktop.

    xfce remote desktop

    To install Xfce, enable EPEL repo

    yum install -y epel-release

    Install Xfce

    yum groupinstall Xfce

    You can see other groups available with command “yum grouplist”.

    Insall vnc server

    yum install -y tigervnc-server

    Creating User

    We need to create a normal linux user to use with Xfce. Using it as root is not recommended.

    To create user, run

    useradd -m --shell /bin/bash serverok

    Replace “serverok” with whatever username you want to use.

    Configure VNC server

    Change to the user we created before

    su - serverok

    To create initial vnc config files and set password, run

    vncserver -fg

    We used -fg option to keep vncserver in forground. vcnserver will ask you to set password, this will be used to connect to VNC server.

    When i run “vncserver -fg” on CentOS, it exited with error. If it keep running, press CTRL+C to stop vnc server.

    If you run with out -fg option, you can stop vnc server with command

    vncserver -kill :1

    Edit file

    vi /home/serverok/.vnc/xstartup

    Replace contents of this file with following

    #!/bin/sh

unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS
/etc/X11/xinit/xinitrc
/bin/startxfce4

    Now you can start vncserver manually with command

    vncserver -fg

    You will be able to connect to VNC server with YOUR_SERVER_IP:1

    Auto start VNC server

    Following need to be done as user root.

    Edit file

    vi /usr/lib/systemd/system/[email protected]

    Find

    ExecStart=/usr/bin/vncserver_wrapper  %i

    Replaced with

    ExecStart=/usr/bin/vncserver_wrapper serverok %i

    reload systemctl

    systemctl daemon-reload

    Enable vncserver to start on boot

    systemctl enable vncserver@:1.service

    Start vncserver

    systemctl start vncserver@:1.service

    Open port in firewall

    You need to open VNC port in firewall. vnc ports start at 5900, for :1, it will be 5901.

    [root@centos7 ~]# netstat -lntp | grep vnc
tcp        0      0 0.0.0.0:5901            0.0.0.0:*               LISTEN      1951/Xvnc           
tcp        0      0 0.0.0.0:6001            0.0.0.0:*               LISTEN      1951/Xvnc           
tcp6       0      0 :::5901                 :::*                    LISTEN      1951/Xvnc           
tcp6       0      0 :::6001                 :::*                    LISTEN      1951/Xvnc           
[root@centos7 ~]#

    If you are using firewalld, you can open port 5901 with

    firewall-cmd --zone=public --add-port=5901/tcp
firewall-cmd --zone=public --add-port=5901/tcp --permanent

    firewall-cmd command is run 2 times as first command only make changes in current session. second command with –permanent option make changes permanent, but that only happens after you reload firewalld or reboot server. Running command 2 times make the changes permanent and apply changes to current session.

    See VNC, Remote Desktop

  • Connecting to VNC Server from a Mac computer

    On Windows and Linux there are many free open source VNC clients available. For Mac, if you google, most VNC clients are paid. But you don’t need a VNC client on Mac.

    To connect to VNC server from Mac Computer, go to the terminal, run following command

    open vnc://SERVER_IP_ADDRESS_HERE:PORT_HERE

    Example

    open vnc://13.37.18.223:5901

    See Mac, VNC

  • x11vnc

    See vnc

  • Start x11vnc with supervisord

    To auo start x11vnc with supervisord, first install x11vnc and supervisord

    apt -y install supervisor x11vnc

    Create a password file

    x11vnc -storepasswd YOUR_SECRET_PW /etc/vncsecret

    Replace YOUR_SECRET_PW with whatever password you want to use.

    Create supervisord unit file

    vi /etc/supervisor/conf.d/x11vnc.conf

    Add following content

    [program:x11vnc]
priority=200
command=/usr/bin/x11vnc -rfbauth /etc/vncsecret -display :0 -xkb -noxrecord -noxfixes -noxdamage -wait 5 -shared 
user=USERNAME_HERE
autorestart=true
autostart=true
redirect_stderr=true

    Replace USERNAME_HERE with actual user name used to login to system.

    Enable supervisior

    systemctl enable supervisor

    You can use following commands to interact with supervisord

    supervisorctl restart all
supervisorctl reload
supervisorctl status

    See vnc

  • Enable Remote Desktop in Ubuntu 18.04

    Enable Remote Desktop in Ubuntu 18.04

    To enable remote desktop on Ubuntu 18.04 (works with newer Ubuntu versions), go to settings.

    Ubuntu 18.04 settings

    Click on Sharing

    Ubuntu Enable Remote Desktop

    Click on ON/OFF button on title bar to enable Desktop Sharing. Once enabled, click on “Screen Sharing” to See Desktop sharing option, you need to enable it for network connection.

    Ubuntu 18.04 desktop sharing

    Ubuntu use vino package to allow remote desktop over VNC.

    See Ubuntu, VNC, remote desktop

  • vnc

    Install VNC server

    VNC Client

    Remote Desktop Setup

    sleep-monitor system is about to suspend

    See Remote Desktop

  • Install vnc server on CentOS 5

    NOTE: CentOS 5 reached its End of Life on March 31, 2017. For installing VNC desktop on CentOS 7, see Install Xfce VNC remote desktop on CentOS 7

    Install GUI on Sever

    To find available desktop environments

    yum grouplist

    To install gnome

    yum groupinstall "GNOME Desktop Environment"

    For KDE

    yum groupinstall "KDE (K Desktop Environment)"

    For XFCE, install

    yum groupinstall "XFCE"

    XFCE file size in fedora 12 Total download size: 105 M, Installed size: 363 M

    Install VNC Server

    yum install vnc vnc-server

    Start VNC Server

    [root@pc7 ~]# vncserver

You will require a password to access your desktops.

Password:
Verify:
xauth:  creating new authority file /root/.Xauthority

New 'pc7.localdomain:1 (root)' desktop is pc7.localdomain:1

Creating default startup script /root/.vnc/xstartup
Starting applications specified in /root/.vnc/xstartup
Log file is /root/.vnc/pc7.localdomain:1.log

[root@pc7 ~]#

    Now stop vnc server with

    pkill -9 vnc
rm -rf /tmp/.X*

    Set Password for VNC Server

    vncpasswd /root/.vnc/passwd

    [root@pc7 ~]# vncpasswd /root/.vnc/passwd
Password:
Verify:
[root@pc7 ~]#

    Edit xstartup

    vi  /root/.vnc/xstartup

    Find

    twm &

    Replace it with

    For Gnome

    gnome-session &

    For XFCE

    startxfce4 &

    For KDE

    startkde &

    For FVWM2

    fvwm2 &

    After change, it will look like

    [root@pc7 ~]# cat /root/.vnc/xstartup
#!/bin/sh

vncconfig -iconic &
# Uncomment the following two lines for normal desktop:
# unset SESSION_MANAGER
# exec /etc/X11/xinit/xinitrc

[ -x /etc/vnc/xstartup ] && exec /etc/vnc/xstartup
[ -r $HOME/.Xresources ] && xrdb $HOME/.Xresources
xsetroot -solid grey
xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
gnome-session &
[root@pc7 ~]#

    Create VNC Users

    vi /etc/sysconfig/vncservers

    Add 

    VNCSERVERS="1:flashwebhost"

    Start VNC Server

    [root@pc7 ~]# vncserver

New 'pc7.localdomain:1 (root)' desktop is pc7.localdomain:1

Starting applications specified in /root/.vnc/xstartup
Log file is /root/.vnc/pc7.localdomain:1.log

[root@pc7 ~]#

    Connecting

    Start tightVNC Viewer, connect to IP-ADDR:1 to connect as user root.

    See VNC server