示例集

完整文章请参考https://www.jianshu.com/p/79059b06a121或者google

配置文件目录
- systemctl脚本目录：/usr/lib/systemd/
- 系统服务目录：/usr/lib/systemd/system/
- 用户服务目录：/usr/lib/systemd/user/
在/usr/lib/systemd/system目录下新建service-name.service文件：

[UNIT]
#服务描述
Description=Media wanager Service
#指定了在systemd在执行完那些target之后再启动该服务
After=network.target
[Service]
#定义Service的运行类型，一般是forking(后台运行)   
Type=forking
#定义systemctl start|stop|reload *.service 的执行方法（具体命令需要写绝对路径）
#注：ExecStartPre为启动前执行的命令
ExecStartPre=/usr/bin/test "x${NETWORKMANAGER}" = xyes
ExecStart=/home/mobileoa/apps/shMediaManager.sh -start
ExecReload=
ExecStop=/home/mobileoa/apps/shMediaManager.sh -stop
#创建私有的内存临时空间
PrivateTmp=True
[Install]
#多用户
WantedBy=multi-user.target

新建好service文件后，要执行命令重载系统服务：systemctl daemon-reload

设置开机启动：systemctl enable *.service
启动服务：systemctl start *.service
停止服务：systemctl stop *.service
重启服务：systemctl reload *.service

示例集

注意：需要以754的权限保存在目录/usr/lib/systemd/system/

开机启动： systemctl enable nginx.service

heart-beat.service(自定义服务)

[Unit]
Description=heart-beat
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
ExecStart=/home/admin/dashboard-heart-beat/start.sh
ExecReload=
ExecStop=/home/admin/dashboard-heart-beat/stop.sh
[Install]
WantedBy=multi-user.target

tomcat.service

[Unit]
Description=tomcat
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
ExecStart=/usr/local/tomcat/bin/startup.sh
ExecReload=
ExecStop=/usr/local/tomcat/bin/shutdown.sh
[Install]
WantedBy=multi-user.target

nginx.service

[Unit]
Description=nginx - high performance web server
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
ExecStart=/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
ExecReload=/usr/local/nginx/sbin/nginx -s reload
ExecStop=/usr/local/nginx/sbin/nginx -s stop
[Install]
WantedBy=multi-user.target
--------------------------或者---------------
[Unit]
Description=The nginx HTTP and reverse proxy server
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
PIDFile=/run/nginx.pid
# Nginx will fail to start if /run/nginx.pid already exists but has the wrong
# SELinux context. This might happen when running `nginx -t` from the cmdline.
# https://bugzilla.redhat.com/show_bug.cgi?id=1268621
ExecStartPre=/usr/bin/rm -f /run/nginx.pid
ExecStartPre=/usr/sbin/nginx -t
ExecStart=/usr/sbin/nginx
ExecReload=/bin/kill -s HUP $MAINPID
KillSignal=SIGQUIT
TimeoutStopSec=5
KillMode=process
PrivateTmp=true
[Install]
WantedBy=multi-user.target

mysql.service

[Unit]
Description=mysql
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
ExecStart=/usr/local/mysql/support-files/mysql.server start
#ExecReload=/usr/local/mysql/support-files/mysql.server restart
#ExecStop=/usr/local/mysql/support-files/mysql.server stop
#PrivateTmp=true
[Install]
WantedBy=multi-user.target

php-fpm.service

[Unit]
Description=php
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
ExecStart=/usr/local/php/sbin/php-fpm
[Install]
WantedBy=multi-user.target

redis.service

[Unit]
Description=Redis
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
ExecStart=/usr/local/bin/redis-server /etc/redis.conf
ExecStop=kill -INT `cat /tmp/redis.pid`
User=www
Group=www
[Install]
WantedBy=multi-user.target

supervisord.service

[Unit]
Description=Process Monitoring and Control Daemon
After=rc-local.service
[Service]
Type=forking
ExecStart=/usr/bin/supervisord -c /etc/supervisord.conf
SysVStartPriority=99
[Install]
WantedBy=multi-user.target

Centos7自定义服务