Centos配置VNC远程
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摘要
本文主要讲述了Centos如何通安装tigervnc-server，去实现VNC远程连接到Centos。
配置过程
tigervnc-server
先用yum安装tigervnc-server包
yum install tigervnc-server安装完成后，其默认的配置文件在/lib/systemd/system/vncserver@.service，内容如下
# The vncserver service unit file
#
# Quick HowTo:
# 1. Copy this file to /etc/systemd/system/vncserver@.service
# 2. Replace <USER> with the actual user name and edit vncserver
# parameters in the wrapper script located in /usr/bin/vncserver_wrapper
# 3. Run `systemctl daemon-reload`
# 4. Run `systemctl enable vncserver@:<display>.service`
#
# DO NOT RUN THIS SERVICE if your local area network is
# untrusted! For a secure way of using VNC, you should
# limit connections to the local host and then tunnel from
# the machine you want to view VNC on (host A) to the machine
# whose VNC output you want to view (host B)
#
# [user@hostA ~]$ ssh -v -C -L 590N:localhost:590M hostB
#
# this will open a connection on port 590N of your hostA to hostB's port 590M
# (in fact, it ssh-connects to hostB and then connects to localhost (on hostB).
# See the ssh man page for details on port forwarding)
#
# You can then point a VNC client on hostA at vncdisplay N of localhost and with
# the help of ssh, you end up seeing what hostB makes available on port 590M
#
# 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.
[Unit]
Description=Remote desktop service (VNC)
After=syslog.target network.target
[Service]
Type=simple
# Clean any existing files in /tmp/.X11-unix environment
ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
ExecStart=/usr/bin/vncserver_wrapper <USER> %i
ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
[Install]
WantedBy=multi-user.target/usr/bin/vncserver_wrapper是一个用于启动和停止VNC服务器的脚本，它可以接收以下参数：
• <USER>：指定运行VNC服务器的用户，需要替换为实际的用户名。
• %i：指定VNC服务器的显示编号，需要在服务名中用@符号后面的数字或字符串表示，比如vncserver@:1.service。
• -geometry：指定VNC会话的分辨率，比如-geometry 1280x1024。
• -kill：停止VNC服务器，需要指定显示编号，比如-kill :1。配置文件
将默认提供的文件复制到/etc/systemd/system，命令如下：
sudo cp /lib/systemd/system/vncserver@.service /etc/systemd/system/vncserver@:1.service其中vncserver@:1.service中的:1，是所谓的服务实例名称，这个参数会作为上文配置的i传入，并且该VNC服务的端口号就是5900+i。
然后设置用于VNC登录的用户（这里用oracle作为示例）以及分辨率：
[Unit]
Description=Remote desktop service (VNC)
After=syslog.target network.target
[Service]
Type=simple
User=root
# Clean any existing files in /tmp/.X11-unix environment
ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
ExecStart=/sbin/runuser -l oracle -c "/usr/bin/vncserver %i -geometry 1280x720"
ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
[Install]
WantedBy=multi-user.target要注意的是，这里Serivce中的User要填root， 并且不要设置PID文件路径，不然用systemctl启动该服务时会报错：PID file is not owned by root. Refusing.
完成编辑后重新加载systemctl：
systemctl daemon-reload设置VNC访问密码
命令行切换到你要VNC登录的账号。执行vncpasswd，设置密码，也可以单独设置一个只能浏览的密码：
vncpasswd
Password:
Verify:
Would you like to enter a view-only password (y/n)? n
A view-only password is not used修改防火墙
将VNC的服务开通，当然你也可以选择直接放通端口：
firewall-cmd --add-service=vnc-server --permanent
firewall-cmd --reload设置开机自启
systemctl enable vncserver@:1.service原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
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