1、关闭防火墙和selinux
systemctl stop firewalld.service
setenforce 0
2、安装图形支持
yum groups install "GNOME Desktop" -y
3、安装vncserver
yum -y install tigervnc-server
4、修改配置文件
cp /lib/systemd/system/vncserver@.service /etc/systemd/system/vncserver@:1.service
vim /etc/systemd/system/vncserver@\:1.service
找到如下行
ExecStart=/usr/bin/vncserver_wrapper <USER> %i
我以root登陆，所以修改为
ExecStart=/usr/sbin/runuser -l root -c "/usr/bin/vncserver %i"
PIDFile=/root/.vnc/%H%i.pid
5、重新加载systemd
systemctl daemon-reload
6、设置vnc登陆密码
vncpasswd
7、启动vncserver
systemctl enable vncserver@:1.service
systemctl start vncserver@:1.service
8、查看是否正常启动
ps -ef | grep vnc
systemctl status vncserver@:1.service
至此vncserver搭建完毕。
在windows上面安装VNC Viewer软件，连接远程主机.
IP:1即可远程
当vnc连接出错的时候，我们通常可以查看log文件看具体什么错误。
通过命令：
vncserver -kill :1
把端口1的vnc服务杀掉，然后再启用vnc:
vncserver
然后就会打印vnc的log文件位置：
然后vim编辑器查看错误：
vim /root/.vnc/firefly:1.log
问题：Could not make bus activated clients aware of XDG_CURRENT_DESKTOP=GNOME environment variable: Could not connect: Connection refused
解决方案一：
[root@kevin ~]# cat /root/.vnc/kevin:1.log
...........
...........
(imsettings-check:31898): GLib-GIO-CRITICAL **: 21:56:03.842: g_dbus_proxy_call_sync_internal: assertion 'G_IS_DBUS_PROXY (proxy)' failed
GLib-GIO-Message: 21:56:03.854: Using the 'memory' GSettings backend. Your settings will not be saved or shared with other applications.
** (process:31798): WARNING **: 21:56:03.861: Could not make bus activated clients aware of XDG_CURRENT_DESKTOP=GNOME environment variable:
Could not connect: Connection refused
原因：dbus-daemon存在冲突。
因为root系统环境中装有anaconda，它的bin目录中的dbus-daemon会与系统自带的dbus-daemon冲突。
[root@kevin ~]# find / -name "dbus-daemon"
/usr/bin/dbus-daemon
/data/anaconda3/bin/dbus-daemon
/data/anaconda3/pkgs/dbus-1.13.6-h746ee38_0/bin/dbus-daemon
[root@kevin ~]# which dbus-daemon
/data/anaconda3/bin/dbus-daemon
解决办法：使用非root用户启动vncserver
[root@kevin ~]# useradd vncuser
[root@kevin ~]# echo "vncuser@123"|passwd --stdin vncuser
[root@kevin ~]# vim /etc/sudoers
vncuser ALL=(ALL) NOPASSWD: ALL
修改vncserver使用vncuser这个非root用户启动
[root@kevin ~]# cat /etc/systemd/system/vncserver@:1.service
..........
..........
ExecStart=/usr/sbin/runuser -l vncuser -c "/usr/bin/vncserver %i"
PIDFile=/root/.vnc/%H%i.pid
接着切入到非root用户vncuser下启动vncserver
[root@kevin ~]# su - vncuser
Last login: Tue Jul 2 22:05:38 CST 2019 on pts/2
设置vnc登录密码
[vncuser@kevin ~]$ vncpasswd
启动vnc
[vncuser@kevin ~]$ vncserver
查看vnc日志
[vncuser@kevin ~]$ cd .vnc/
[vncuser@kevin .vnc]$ ll
total 20
-rw-r--r-- 1 vncuser vncuser 332 Jul 2 22:06 config
-rw-rw-r-- 1 vncuser vncuser 1046 Jul 2 22:10 kevin:1.log
-rw-rw-r-- 1 vncuser vncuser 5 Jul 2 22:06 kevin:1.pid
-rw------- 1 vncuser vncuser 8 Jul 2 22:06 passwd
-rwxr-xr-x 1 vncuser vncuser 112 Jul 2 22:06 xstartup
[vncuser@kevin .vnc]$ cat kevin\:1.log
Xvnc TigerVNC 1.8.0 - built Nov 2 2018 19:05:14
Copyright (C) 1999-2017 TigerVNC Team and many others (see README.txt)
See http://www.tigervnc.org for information on TigerVNC.
Underlying X server release 12001000, The X.Org Foundation
Tue Jul 2 22:06:26 2019
vncext: VNC extension running!
vncext: Listening for VNC connections on all interface(s), port 5901
vncext: created VNC server for screen 0
touch: cannot touch ‘/home/vncuser/.cache/imsettings/log’: No such file or directory
Tue Jul 2 22:06:30 2019
ComparingUpdateTracker: 0 pixels in / 0 pixels out
ComparingUpdateTracker: (1:-nan ratio)
Tue Jul 2 22:10:22 2019
Connections: accepted: 192.168.1.200::56162
Tue Jul 2 22:10:23 2019
Connections: closed: 192.168.1.200::56162 (reading version failed: not an RFB
client?)
EncodeManager: Framebuffer updates: 0
EncodeManager: Total: 0 rects, 0 pixels
EncodeManager: 0 B (1:-nan ratio)
ComparingUpdateTracker: 0 pixels in / 0 pixels out
ComparingUpdateTracker: (1:-nan ratio)
解决方案二：
vim ~/.bashrc
注释anconda内容
source ~/.bashrc
reboot
当vnc启动后，再修改~/.bashrc添加已注释anconda内容
再source ~/.bashrc即可