install tigervnc
yum groupinstall Desktop
yum install tigervnc-server
modify /etc/sysconfig/vncservers file
VNCSERVERS="1:user1 2:user2"
VNCSERVERARGS[1]="-geometry 1024x768 -localhost"
VNCSERVERARGS[2]="-geometry 1920x1080 -localhost"
-localhost option is to make vnc encrypted through an ssh tunnel
modify /etc/sysconfig/iptables file
add one line:
-A INPUT -m state --state NEW -m tcp -p tcp -m multiport --dports 5901:5903,6001:6003 -j ACCEPT
restart iptables:
service iptables restart
output:
iptables: Setting chains to policy ACCEPT: filter [ OK ]
iptables: Flushing firewall rules: [ OK ]
iptables: Unloading modules: [ OK ]
iptables: Applying firewall rules: [ OK ]
set vnc passwd for each user
after ssh into my account
vncpasswd
i can set the password corresponding to my account
start vnc server
service vncserver start
output:
Starting VNC server: 1:user1
New 'Lab:1 (user1)' desktop is Lab:1
Starting applications specified in /home/user1/.vnc/xstartup
Log file is /home/user1/.vnc/Lab:1.log
2:user2
New 'Lab:2 (user2)' desktop is Lab:2
Starting applications specified in /home/user2/.vnc/xstartup
Log file is /home/user2/.vnc/Lab:2.log
[ OK ]
try restart or stop also to make it work
if met problems like this:
Starting VNC server: 1:user1 A VNC server is already running as :1
[FAILED]
it means there are already some process occupy the port 6001, using ps ef | grep vnc does not give me anything, because this port is actually occupied by Xvfb, using lsof -i tcp:6001 will give the pid of the process which occupy the port, after killing that process, vnc server will be able to start normally.
[user1@Lab .vnc]$ ls
passwd Lab:1.log Lab:1.pid xstartup
[user2@Lab .vnc]$ ls
passwd Lab:2.log Lab:2.pid xstartup
usage
after ssh into the server, run vncviewer localhost:1 using corresponding vnc password will show the desktop, can also try vncviewer localhost:2 using vnc password set by others.
Try openning a firefox, close vncviewer, then connect again, firefox is still there.