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標題: [分享] Vnc Server 4.1.2 建置on CentOS 5 [打印本頁]

作者: adj 時間: 2007-11-29 21:57 標題: Vnc Server 4.1.2 建置on CentOS 5

Check what's installed First check if you already have them installed on your system, open a terminal and type:

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代碼:

$ rpm -qa|grep vnc
vnc-server-4.1.1-36
vnc-4.1.1-36

If you get an output something like this then you're all ready, if not you need to install them via yum. Add a user(s) Next we need to add at least 1 VNC user, open the file /etc/sysconfig/vncservers as root and add the information shown:

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代碼:

$ vi /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
# <URL:http://www.uk.research.att.com/archive/vnc/sshvnc.html>.

# Use "-nolisten tcp" to prevent X connections to your VNC server via TCP.

# Use "-nohttpd" to prevent web-based VNC clients connecting.

# 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="1:bobpeers"
VNCSERVERARGS[1]="-geometry 1024x768 -depth 16"

The important part is the VNCSERVERS="1:bobpeers", this sets up a users for the vnc server, you can add as many as you like here. The VNCSERVERARGS[1] line refers to the arguments for user 1, in this case the only user. Geometry sets the size and depth sets the colour depth, you can adjust these to suit your preferences but in my case the client machine has a resolution of 1024x768 and the depth 16 makes the connection a bit faster since the less information that needs to be sent the more responsive the session will feel. Knowing which port to use It's also important to note the session number user as this will tell us which port vncserver will listen on. Remember the Gnome Remote Desktop asked us to use computername:0 as the connection string, the number needs to be added to 5900 to get the listening port. In this case we need to use port 5901 since we are using session 1. In the same way we could use any number, for example:

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代碼:

VNCSERVERS="2000:bobpeers"
VNCSERVERARGS[2000]="-geometry 1024x768 -depth 16"

In this case we need to use port 5900+2000 so port 7900. Setting a password To add some security we need to add a password that must be given before a connection can be established, open a terminal and type:

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代碼:

$ vncpasswd
Password:
Verify:

This creates a hidden folder called .vnc in your home folder containing the password file. Starting the server and startup options To start the server we type the command 'vncserver' and the session you wish to start (if you have set up more than 1 entry in the /etc/sysconfig/vncservers file:

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代碼:

$ vncserver :1
Starting VNC server: 1:bobpeers
New 'linux.bobpeers:1 (bobpeers)' desktop is linux.bobpeers:1

Starting applications specified in /home/bobuser/.vnc/xstartup
Log file is /home/bobuser/.vnc/linux.bobpeers:1.log

                                                           [  OK  ]

Now the server is started and a user could connect, however they will get a plain grey desktop by default as the connection will not cause a new session of X to start by default, to fix this we need to edit the startup script in the .vnc folder in your home directory.

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代碼:

$ vi ~/.vnc/xstartup

#!/bin/sh

# 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 $HOME/.Xresources
xsetroot -solid grey
vncconfig -iconic &
xterm -geometry 80x24+10+10 -ls -title "$VNCDESKTOP Desktop" &
twm &

As the file says make sure the two lines at the top are uncommented by removing the leading # sign. Next we need to restart vncserver to pick up the changed we just made. To restart the vncserver we need to kill the process and start a new one as root:

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代碼:

$ vncserver -kill :1
Killing Xvnc process ID 13728

$ vncserver :1
Starting VNC server: 1:bobpeers
New 'linux.bobpeers:1 (bobpeers)' desktop is linux.bobpeers:1

Starting applications specified in /home/bobuser/.vnc/xstartup
Log file is /home/bobuser/.vnc/linux.bobpeers:1.log

                                                           [  OK  ]

PS: 測試時發現 $Home/.vnc/xstartup 需要有 +x 的權限...要不然登入遠端主機時會看不到GDM的畫面...可能要注意一下參考網站: http://www.bobpeers.com/linux/vnc http://www.ihao.org/dz5/thread-153-1-2.html

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