1.建立服务文件
文件路径
vim /usr/lib/systemd/system/nginx.service
服务文件内容
1.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
2.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
3.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
4.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
5.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
文件内容解释
[Unit]:服务的说明
Description:描述服务
After:描述服务类别
[Service]服务运行参数的设置
Type=forking是后台运行的形式
ExecStart为服务的具体运行命令
ExecReload为重启命令
ExecStop为停止命令
PrivateTmp=True表示给服务分配独立的临时空间
注意：启动、重启、停止命令全部要求使用绝对路径
[Install]服务安装的相关设置，可设置为多用户
2.保存目录
以754的权限保存在目录：
/usr/lib/systemd/system
3.设置开机自启动
任意目录下执行
systemctl enable nginx.service
4.其他命令
启动nginx服务
systemctl start nginx.service
设置开机自启动
systemctl enable nginx.service
停止开机自启动
systemctl disable nginx.service
查看服务当前状态
systemctl status nginx.service
重新启动服务
systemctl restart nginx.service
查看所有已启动的服务
systemctl list-units --type=service
查看日志：journalctl -xe
