Howto install and configure VNC Server on CentOS 6.4

Howto install and configure VNC Server on CentOS 6.4

vncserver

1.  Install X Windown and KDE Destop on our Centos 6.4

 

[root@localhost ~]# yum groupinstall “X Window System” “KDE (K Desktop Environment)”
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirror.nus.edu.sg
* epel: ftp.kddilabs.jp
* extras: mirrors.hostemo.com
* updates: centos.ipserverone.com
Setting up Group Process
Checking for new repos for mirrors
Package xorg-x11-server-Xorg-1.13.0-11.el6.centos.x86_64 already installed and latest version
Package xorg-x11-xinit-1.0.9-13.el6.x86_64 already installed and latest version
Package 1:xorg-x11-xauth-1.0.2-7.1.el6.x86_64 already installed and latest version
Package xorg-x11-drivers-7.3-13.4.el6.x86_64 already installed and latest version
Package wdaemon-0.17-5.el6.x86_64 already installed and latest version
Package xorg-x11-server-utils-7.5-13.el6.x86_64 already installed and latest version
Package hal-0.5.14-11.el6.x86_64 already installed and latest version
Package plymouth-system-theme-0.8.3-27.el6.centos.noarch already installed and latest version
Package xorg-x11-utils-7.5-6.el6.x86_64 already installed and latest version
Package wacomexpresskeys-0.4.2-3.el6.x86_64 already installed and latest version
Package firstboot-1.110.14-1.el6.x86_64 already installed and latest version
Package glx-utils-9.0-0.7.el6.x86_64 already installed and latest version
Package xvattr-1.3-18.el6.x86_64 already installed and latest version
Warning: Group KDE (K Desktop Environment) does not exist.
Resolving Dependencies
–> Running transaction check
—> Package spice-vdagent.x86_64 0:0.12.0-4.el6 will be updated
—> Package spice-vdagent.x86_64 0:0.12.0-4.el6_4.1 will be an update
–> Finished Dependency ResolutionDependencies Resolved=====================================================================================================================================================================================================
Package Arch Version Repository Size
=====================================================================================================================================================================================================
Updating:
spice-vdagent x86_64 0.12.0-4.el6_4.1 updates 53 kTransaction Summary
=====================================================================================================================================================================================================
Upgrade 1 Package(s)Total download size: 53 k
Is this ok [y/N]: y
Downloading Packages:
spice-vdagent-0.12.0-4.el6_4.1.x86_64.rpm | 53 kB 00:07
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Updating : spice-vdagent-0.12.0-4.el6_4.1.x86_64 1/2
Cleanup : spice-vdagent-0.12.0-4.el6.x86_64 2/2
Verifying : spice-vdagent-0.12.0-4.el6_4.1.x86_64 1/2
Verifying : spice-vdagent-0.12.0-4.el6.x86_64 2/2Updated:
spice-vdagent.x86_64 0:0.12.0-4.el6_4.1

Complete!
[root@localhost ~]#

2.  Install Tiger VNC Server on our Centos 6.4

[root@localhost ~]# yum -y install vnc-server
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirror.nus.edu.sg
* epel: ftp.kddilabs.jp
* extras: mirrors.hostemo.com
* updates: centos.ipserverone.com
Setting up Install Process
Resolving Dependencies
–> Running transaction check
—> Package tigervnc-server-module.x86_64 0:1.1.0-5.el6 will be installed
–> Finished Dependency ResolutionDependencies Resolved=====================================================================================================================================================================================================
Package Arch Version Repository Size
=====================================================================================================================================================================================================
Installing:
tigervnc-server-module x86_64 1.1.0-5.el6 base 290 kTransaction Summary
=====================================================================================================================================================================================================
Install 1 Package(s)Total download size: 290 k
Installed size: 827 k
Downloading Packages:
tigervnc-server-module-1.1.0-5.el6.x86_64.rpm | 290 kB 00:02
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : tigervnc-server-module-1.1.0-5.el6.x86_64 1/1
Verifying : tigervnc-server-module-1.1.0-5.el6.x86_64 1/1Installed:
tigervnc-server-module.x86_64 0:1.1.0-5.el6

Complete!
[root@localhost ~]#

 

[root@localhost ~]# yum install tigervnc-server
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirror.nus.edu.sg
* epel: ftp.kddilabs.jp
* extras: mirrors.hostemo.com
* updates: centos.ipserverone.com
Setting up Install Process
Resolving Dependencies
–> Running transaction check
—> Package tigervnc-server.x86_64 0:1.1.0-5.el6 will be installed
–> Processing Dependency: xorg-x11-fonts-misc for package: tigervnc-server-1.1. 0-5.el6.x86_64
–> Running transaction check
—> Package xorg-x11-fonts-misc.noarch 0:7.2-9.1.el6 will be installed
–> Finished Dependency ResolutionDependencies Resolved================================================================================
Package Arch Version Repository Size
================================================================================
Installing:
tigervnc-server x86_64 1.1.0-5.el6 base 1.0 M
Installing for dependencies:
xorg-x11-fonts-misc noarch 7.2-9.1.el6 base 5.8 MTransaction Summary
================================================================================
Install 2 Package(s)Total download size: 6.8 M
Installed size: 9.4 M
Is this ok [y/N]: y
Downloading Packages:
(1/2): tigervnc-server-1.1.0-5.el6.x86_64.rpm | 1.0 MB 00:05
(2/2): xorg-x11-fonts-misc-7.2-9.1.el6.noarch.rpm | 5.8 MB 00:29
—————————————————————————————————————————————————————————————————–
Total 189 kB/s | 6.8 MB 00:37
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : xorg-x11-fonts-misc-7.2-9.1.el6.noarch 1/2
Installing : tigervnc-server-1.1.0-5.el6.x86_64 2/2
Verifying : xorg-x11-fonts-misc-7.2-9.1.el6.noarch 1/2
Verifying : tigervnc-server-1.1.0-5.el6.x86_64 2/2Installed:
tigervnc-server.x86_64 0:1.1.0-5.el6

Dependency Installed:
xorg-x11-fonts-misc.noarch 0:7.2-9.1.el6

Complete!
[root@localhost ~]#

3.  Create username and password for VNC Server

[root@localhost ~]# useradd kevin.ngo
[root@localhost ~]# su kevin.ngo
[kevin.ngo@localhost root]$ cd ~
[kevin.ngo@localhost ~]$ mkdir .vnc
[kevin.ngo@localhost ~]$ cd .vnc/
[kevin.ngo@localhost .vnc]$ vncpasswd
Password:
Verify:
[kevin.ngo@localhost .vnc]$

4. Configure VNC configuration for new user

[root@localhost ~]# cat /etc/sysconfig/vncservers
# The VNCSERVERS variable is a list of display:user pairs.
#
# Uncomment the lines below to start a VNC server on display :2
# as my ‘myusername’ (adjust this to your own). You will also
# need to set a VNC password; run ‘man vncpasswd’ to see how
# to do that.
#
# DO NOT RUN THIS SERVICE if your local area network is
# untrusted! For a secure way of using VNC, see this URL:
# http://kbase.redhat.com/faq/docs/DOC-7028# Use “-nolisten tcp” to prevent X connections to your VNC server via TCP.# Use “-localhost” to prevent remote VNC clients connecting except when
# doing so through a secure tunnel. See the “-via” option in the
# `man vncviewer’ manual page.# VNCSERVERS=”2:myusername”
# VNCSERVERARGS[2]=”-geometry 800×600 -nolisten tcp -localhost”
VNCSERVERS=”2:kevin.ngo”
[root@localhost ~]#

5. Start VNC Server and configure VNC Server run when server start up

[root@localhost ~]# chkconfig vncserver on
[root@localhost ~]# /etc/init.d/vncserver start
Starting VNC server: 2:kevin.ngo xauth: creating new authority file /home/kevin.ngo/.XauthorityNew ‘localhost.localdomain:2 (kevin.ngo)’ desktop is localhost.localdomain:2Creating default startup script /home/kevin.ngo/.vnc/xstartup
Starting applications specified in /home/kevin.ngo/.vnc/xstartup
Log file is /home/kevin.ngo/.vnc/localhost.localdomain:2.log[ OK ]
[root@localhost ~]#

6. Disable iptables on Centos 6.4

[root@localhost ~]# /etc/init.d/iptables stop
iptables: Flushing firewall rules: [ OK ]
iptables: Setting chains to policy ACCEPT: filter [ OK ]
iptables: Unloading modules: [ OK ]
[root@localhost ~]# chkconfig iptables off
[root@localhost ~]#

7. Use VNC Viewer and connect to VNC Server (Centos 6.4) with user kevin.ngo

http://www.realvnc.com/download/viewer/

vnc server centos 6.4 2

 

vnc server centos 6.4 3

 

That’s all. Thanks for using IThelpblog.com.

 

 

5 comments to Howto install and configure VNC Server on CentOS 6.4

  • LoCK  says:

    im getting this error

    root@myhostname [~]# /etc/init.d/vncserver start
    Starting VNC server: 2:kevin.ngo /etc/init.d/vncserver: line 52: 2: syntax error: operand expected (error token is “2”)

    • Kevin  says:

      Can you try to use

      “yum erase tigervnc-server vnc-server” and try to reinstall again?

  • mecaim  says:

    [root@*****~]# /etc/init.d/vncserver start
    VNC-Server starten: no displays configured

    What i can do?

  • Raja  says:

    Thanks for this article. Very useful.

  • Celito Felipetto  says:

    It’s just a suggestion, but i think that disabling you firewall it’s not a safe thing to do. I prefer to add a exception on the iptables configuration so it still running, but with the VNC also working.

    To do this, is very simple:

    1) As root add a line on your iptables config file (/etc/sysconfig/iptables):
    -A INPUT -m state --state NEW -m tcp -p tcp -m multiport --dports 5801:5903,6001:6003 -j ACCEPT
    This line must be with the others INPUT entries, just before the COMMIT line;

    2) Restart the firewall to refresh its rules:
    service iptables restart
    if it was turned off, just start it again and add it back on chkconfig .

    I’ve configured my vnc servers this way and i didn’t have any problem. If you like my suggestion, you should change your tutorial to teach a safer way to configure a vnc server.

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