Systemd 如何设置 开机启动 守护进程

权限：systemd有系统和用户区分；系统（/user/lib/systemd/system/）、用户（/etc/lib/systemd/user/）.一般系统管理员手工创建的单元文件建议存放在/etc/systemd/system/目录下面。

1、在/usr/lib/systemd/system/ 目录下 创建对应service（例如我要设置 gogs 为开机启动和守护进程，那么就创建 gogs.service ）

 切换目录

cd /lib/systemd/system
           

创建对应的service

vi gogs.service
           

编辑 service

[Unit]
Description=Gogs
After=network.target

[Service]
# Modify these two values and uncomment them if you have
# repos with lots of files and get an HTTP error 500 because
# of that
###
#LimitMEMLOCK=infinity
#LimitNOFILE=65535
Type=forking
User=gogs
Group=gogs
WorkingDirectory=/usr/local/git/gogs
ExecStart=/bin/sh /usr/local/git/gogs/gogs.sh
Restart=always
Environment=USER=gogs HOME=/home/gogs

# Some distributions may not support these hardening directives. If you cannot start the service due
# to an unknown option, comment out the ones not supported by your version of systemd.
#ProtectSystem=full
#PrivateDevices=yes
#PrivateTmp=yes
#NoNewPrivileges=true

[Install]
WantedBy=multi-user.target
           

wq 保存退出

2、加载配置，执行配置。

systemctl daemon-reload
           

systemctl enable gogs.service
           

systemctl start gogs.service
           

  查看 sercvice 状态

systemctl status gogs.service
           

  如果输出如下，那么恭喜你就完成了

附上nexus和sonarqube的配置

[Unit]
After=nertwork.target

[Service]
User=sonarqube
Type=forking
#EnvironmentFile=-/etc/profile
ExecStart=/bin/sh -c '. /etc/profile ; /usr/local/java/sonarqube/sonarqube-7.7/bin/linux-x86-64/sonar.sh start'
ExecStop=/bin/sh -c '. /etc/profile ; /usr/local/java/sonarqube/sonarqube-7.7/bin/linux-x86-64/sonar.sh stop'
Restart=on-failure

[Install]
WantedBy=multi-user.target
Alias=sonarqube.service
           

[Unit]
After=nertwork.target

[Service]
User=nexus
Type=forking
ExecStart=/bin/sh -c '. /etc/profile ; /usr/local/java/nexus/nexus-3.16.2-01/bin/nexus start'
ExecStop=/bin/sh -c '. /etc/profile ; /usr/local/java/nexus/nexus-3.16.2-01/bin/nexus stop'
Restart=on-failure

[Install]
WantedBy=multi-user.target
Alias=nexus
           

具体service 各种配置项 请参考 http://www.ruanyifeng.com/blog/2016/03/systemd-tutorial-part-two.html