安装和配置VNC
1 安装vnc
# yum install -y tigervnc-server tigervnc-server-module libXfont pixman xterm xorg-x11-twm
安装vnc及字体库
# chkconfig vncserver on 设置开机自动启动
2 VNC配置
修改 /etc/sysconfig/vncservers 文件，添加以下内容
# 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 800x600 -nolisten tcp -localhost"
VNCSERVERS="1:root"
VNCSERVERARGS[1]="-geometry 1024x768 -nolisten tcp -depth 24"
# -alwaysshared代表允许多用户同时登录 -depth代为色深，参数有8,16,24,32
#红色为新增内容
3 设置VNC密码
# vncpasswd
Password:
Verify:
连续两次输入同样的密码
设置的密码保存在 /root/.vnc/passwd
4 修改防火墙配置，修改/etc/sysconfig/iptables
# vi /etc/sysconfig/iptables #编辑，添加以下代码，开启5901、5902端口
-A INPUT -m state --state NEW -m tcp -p tcp --dport 5901 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 5902 -j ACCEPT
:wq! 保存，退出
service iptables restart # 重启
5 使用VNC连接CentOS主机
直接打开VNC，输入IP地址，冒号后面的1代表桌面号，这个要根据你的配置文件定义的桌面号
如果你是Root用户登陆，会有下面的警告提示
然后输入密码，就可登陆了
6 FAQ
6.1 VNC服务使用的端口号与桌面号的关系
VNC服务使用的端口号与桌面号相关，VNC使用TCP端口从5900开始，对应关系如下
桌面号为“1” ―- 端口号为5901
桌面号为“2” ―- 端口号为5902
桌面号为“3” ―- 端口号为5903
基于Java的VNC客户程序Web服务TCP端口从5800开始，也是与桌面号相关，对应关系如下
桌面号为“1” ―- 端口号为5801
桌面号为“2” ―- 端口号为5802
桌面号为“3” ―- 端口号为5803
6.2 error1: VNC Fatal server error: could not open default font ‘fixed’
Thu Jul 18 00:00:36 2013
vncext: VNC extension running!
vncext: Listening for VNC connections on all interface(s), port 5901
vncext: created VNC server for screen 0
[dix] Could not init font path element /usr/share/X11/fonts/misc, removing from list!
[dix] Could not init font path element /usr/share/X11/fonts/100dpi, removing from list!
[dix] Could not init font path element /usr/share/X11/fonts/Type1, removing from list!
[dix] Could not init font path element /usr/share/fonts/default/Type1, removing from list!
[dix] Could not init font path element built-ins, removing from list!
Fatal server error:
could not open default font 'fixed'
解决办法：
yum -y install fontforge
yum update libXfont
6.3 http://www.realvnc.com/download/binary/1293/ VNC下载地址
6.4 VNC的启动/停止/重启
# service vncserver start/stop/restart
关闭具体的vncserver命令:vncserver -kill:1 vncserver -kill:2
6.5 vncserver 不能重启
# service vncserver restart
Shutting down VNC server: [ OK ]
Starting VNC server: 1:root
Warning: hfracts01:1 is taken because of /tmp/.X1-lock
Remove this file if there is no X server hfracts01:1
A VNC server is already running as :1
解决办法:
# rm -rf /tmp/.X1-lock
# rm -rf /tmp/.X11-unix/
如果要杀掉 vncserver 进程，可执行 vncserver :1 kill ，1表示 display 的 ID 号