云服务器 nginx自启动、mysql自启动、pyhton后端自启动

nginx自启动

方法一：

1、建立启动文件

vim /usr/lib/systemd/system/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、检查常用命令

sudo systemctl daemon-reload 重新加载这个文件
sudo  systemctl disable nginx.service 关闭开机自启
sudo  systemctl enable nginx.service 开启开机自启
sudo  systemctl status nginx.service 查看状态
sudo  systemctl restart nginx.service 重启服务
sudo  systemctl list-units --type=service 查看所有服务

方法二（ubentu已成功）

1、建立启动文件

在/etc/init.d/下创建nginx文件，sudo vim /etc/init.d/nginx

#! /bin/bash
### BEGIN INIT INFO
# Provides:          XXX
# Required-Start:
# Required-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start XXX daemon at boot time
# Description:       Start XXX daemon at boot time
### END INIT INFO

#chkconfig:35 85 15

DAEMON=/usr/local/nginx/sbin
PID=/usr/local/nginx/logs/nginx.pid

case "$1" in
  start)
      echo "Starting nginx daemon..."
      $DAEMON && echo "SUCCESS"  #开启nginx
  ;;
  stop)
      echo "Stopping nginx daemon..."
      $DAEMON -s quit && echo "SUCCESS"  #从容的停止nginx
  ;;
  reload)
      echo "Reloading nginx daemon..."
      $DAEMON -s reload && echo "SUCCESS"  #平滑重启nginx
  ;;
  restart)
      echo "Restarting nginx daemon..."
      if [ ! -f "$PID" ]; then
	   ps -ef | grep nginx | awk 'NR<3{print "kill -9 "$2}' | sh
	   sleep 3
	   $DAEMON && echo "SUCCESS"                  #开启nginx
      else
	   $DAEMON -s quit                            #从容的停止nginx
	   sleep 3
     	   $DAEMON && echo "SUCCESS"                  #开启nginx
      fi
  ;;
  status)
      if [ ! -f "$PID" ]; then                  #因为nginx启动后会生成进程文件nginx.pid，这里通过判断进程文件是否存在，判断nginx是否启动
         echo "Nginx is not running..."
      else
         echo "Nginx is running..."
      fi
  ;;
  *)
      echo "Usage:service nginx (start|stop|restart|reload|status)"
      exit 2
  ;;
esac

2、开权限和更新文件

#设置服务脚本有执行权限
sudo chmod +x /etc/init.d/nginx
#注册服务
cd /etc/init.d/
sudo update-rc.d nginx defaults

重启服务器看是否自动启动。

sudo  systemctl status nginx.service 查看状态

mysql自启动

systemctl enable mysql.service 直接mysql自启动

如果不得参照以下操作：

在/lib/systemd/system/mysql.service建立文件。

sudo vim /lib/systemd/system/mysql.service

# MySQL systemd service file

[Unit]
Description=MySQL Community Server
After=network.target

[Install]
WantedBy=multi-user.target

[Service]
Type=notify
User=mysql
Group=mysql
PIDFile=/run/mysqld/mysqld.pid
PermissionsStartOnly=true
ExecStartPre=/usr/share/mysql/mysql-systemd-start pre
ExecStart=/usr/sbin/mysqld
TimeoutSec=infinity
Restart=on-failure
RuntimeDirectory=mysqld
RuntimeDirectoryMode=755
LimitNOFILE=10000

# Set enviroment variable MYSQLD_PARENT_PID. This is required for restart.
Environment=MYSQLD_PARENT_PID=1

自启动

# 重新加载服务
systemctl daemon-reload
# 设置开机自启动
systemctl enable mysql.service

重启看是否已经启动。

python后端程序自启动

常用指令

sudo chmod +x /root/xcxpy.sh 增加权限

sudo systemctl daemon-reload 更新文件
sudo systemctl enable xxx.service 开启自启动
sudo systemctl start xxx.service  开启文件

ps aux | grep python3 
kill -9 pip

1、给脚本增加权限

chmod +x xxx.py

2、在/etc/systemd/system/建立自启动文件xxx.service

[Unit]
Description=Auto Run Python Script
After=network.target

[Service]
ExecStart=/usr/bin/python3 /root/xxx.py  （py的绝对地址）
WorkingDirectory=/root   （文件目录）
StandardOutput=inherit
StandardError=inherit
Restart=always
User=username   (设置用户名)

[Install]
WantedBy=multi-user.target

3、启动服务

sudo systemctl enable xxx.service

4、重启查看程序是否启动

ps aux | grep python3