redhatLinux下配置VNC服务

环境: REDHAT 5

1. 检查是否安装了VNC：
rpm -qa vnc-server

vnc-server-4.1.2-9.el5

没安装的话，安装一下：
yum install vnc-server

2. 配置vncserver登录密码：
[root@Redhat ~]# vncserver

You will require a password to access your desktops.

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

New 'Redhat:1 (root)' desktop is Redhat:1

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

3. 配置vncserver启动文件：
vi ~/.vnc/xstartup

修改后文件：

#!/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 &
gnome-session &

4. 配置vncservers文件
vi /etc/sysconfig/vncservers
修改后文件：
# 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="2:myusername"
# VNCSERVERARGS[2]="-geometry 800x600 -nolisten tcp -nohttpd -localhost"
VNCSERVERS="1:root"
VNCSERVERARGS[1]="-geometry 1024x768 -nolisten tcp -nohttpd -localhost"

5. 关闭防火墙
service iptables stop
或者开放VNC端口：
/sbin/iptables -I INPUT -p tcp --dport 5801 -j ACCEPT
/sbin/iptables -I INPUT -p tcp --dport 5900:5903 -j ACCEPT
/etc/rc.d/init.d/iptables save
/etc/init.d/iptables restart

6. 杀掉当前进程:
vncserver -kill :1
vncserver -kill :2
...

7. 启动vncserver
[root@Redhat ~]# vncserver

New 'Redhat:1 (root)' desktop is Redhat:1

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

8. 通过浏览器（JAVA）连接：
http://192.168.65.131:5801/
9. 通过VNC Viewer客户端连接：
192.168.65.131:1


根据提示输入前面配置的登录密码即可打开！

PS：可能出现的问题：

a、黑屏
在Linux里安装配置完VNC服务端，发现多用户登陆会出现黑屏的情况，具体的现象为：
客户端可以通过IP与会话号登陆进入系统，但登陆进去是漆黑一片，除了一个叉形的鼠标以外，伸手不见五指。

原因：用户的VNC的启动文件权限未设置正确。
解决方法：将黑屏用户的xstartup（一般为：/home/用户名称/.vnc/xstartup）文件的属性修改为755（rwxr-xr-x）。

b、vnc 能输入数字，但不能输入字母
原因：vnc server这边会要求vnc viewer这边OS的输入法要和vnc server那边OS的语言要一致。
解决方法：一般我们装的Linux OS都是E文的，所以使用vnc viewer连入的时候，请关闭本地OS的中文输入法，切换到英语就可以了。

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