nginx启动脚本编写及设置开机自启动

Posted 2020-12-25

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环境：Centos 6.8

如果机器是Centos 7的，此脚本和设置开机自启动方法不适用。

首先确保nginx配置文件中：有pid目录

pid logs/nginx.pid;

1.1 编写nginx启动脚本

[[email protected] ~]# cd /server/scripts
[[email protected] scripts]# vim nginx.sh 
#!/bin/bash
[ -f /etc/init.d/functions ] && . /etc/init.d/functions
pidfile=/application/nginx/logs/nginx.pid

Start_Nginx(){
  if [ -f $pidfile ];then
    echo "Nginx is running"
  else
    /application/nginx/sbin/nginx &>/dev/null
    action "Nginx is Started" /bin/true
  fi
}
Stop_Nginx(){
    if [ -f $pidfile ];then
    /application/nginx/sbin/nginx -s stop &>/dev/null
    action "Nginx is Stopped" /bin/true
  else
    echo "Nginx is already Stopped"
  fi
}
Reload_Nginx(){
  if [ -f $pidfile ];then
    /application/nginx/sbin/nginx -s reload &>/dev/null
    action "Nginx is Reloaded" /bin/true
  else
    echo "Can't open $pidfile ,no such file or directory"
  fi
}

case $1 in
  start)
    Start_Nginx
    RETVAL=$?
    ;;
  stop)
    Stop_Nginx
    RETVAL=$?
    ;;
  restart)
    Stop_Nginx
    sleep 3
    Start_Nginx
    RETVAL=$?
    ;;
  reload)
    Reload_Nginx
    RETVAL=$?
    ;;
  *)
    echo "USAGE: $0 {start|stop|reload|restart}"
    exit 1
esac
exit $RETVAL

编写完成后测试：

[[email protected] scripts]# sh nginx.sh 
USAGE: nginx.sh {start|stop|reload|restart}
[[email protected] scripts]# sh nginx.sh start
Nginx is Started                                           [  OK  ]
[[email protected] scripts]# ps -ef|grep nginx
root     12765     1  0 00:46 ?        00:00:00 nginx: master process /application/nginx/sbin/nginx
www      12767 12765  0 00:46 ?        00:00:00 nginx: worker process        
www      12768 12765  0 00:46 ?        00:00:00 nginx: worker process        
www      12769 12765  0 00:46 ?        00:00:00 nginx: worker process        
www      12770 12765  0 00:46 ?        00:00:00 nginx: worker process        
root     12772 12648  0 00:46 pts/2    00:00:00 grep nginx
[[email protected] scripts]# sh nginx.sh stop
Nginx is Stopped                                           [  OK  ]
[[email protected] scripts]# sh nginx.sh reload
Can't open /application/nginx/logs/nginx.pid ,no such file or directory
[[email protected] scripts]# sh nginx.sh restart
Nginx is already Stopped
Nginx is Started                                           [  OK  ]
[[email protected] scripts]#

1.2 配置开机自启动

加入开机自启动：

[[email protected] scripts]# cp nginx.sh /etc/init.d/nginx
[[email protected] scripts]# chmod +x /etc/init.d/nginx
[[email protected] scripts]# ll /etc/init.d/nginx
-rwxr-xr-x. 1 root root 992 Jul 26 00:48 /etc/init.d/nginx
[[email protected] scripts]# chkconfig --list nginx
service nginx does not support chkconfig
[[email protected] scripts]#

举例查看network开机自启动：

[[email protected] scripts]# head /etc/init.d/network 
#! /bin/bash
#
# network       Bring up/down networking
#
# chkconfig: 2345 10 90
# description: Activates/Deactivates all network interfaces configured to #              start at boot time.
#
### BEGIN INIT INFO
# Provides: $network
[[email protected] scripts]# chkconfig --list network
network         0:off   1:off   2:on    3:on    4:on    5:on    6:off
[[email protected] scripts]# chkconfig network on
[[email protected] scripts]# chkconfig --list network
network         0:off   1:off   2:on    3:on    4:on    5:on    6:off
[[email protected] scripts]#

然后把这两行加入/etc/init.d/nginx脚本中

# chkconfig: 2345 10 90

# description: #添加描述服务信息

然后找开机自启动：开机顺序从第K30开始查找，发现K31没有被占用，那么nginx开机就使用K31（以此类推）

[[email protected] ~]# ll /etc/rc.d/rc3.d/|grep 30

lrwxrwxrwx. 1 root root 17 May 14 02:40 K30postfix -> ../init.d/postfix

[[email protected] ~]# ll /etc/rc.d/rc3.d/|grep 31

[[email protected] ~]#

关机顺序：第60没有，就用60号

[[email protected] ~]# ll /etc/rc.d/rc3.d/|grep 60

[[email protected] ~]#

那么：nginx开机关机顺序就设置如下：30为开机顺序，60为关机顺序

# chkconfig: 2345 30 60

# description: Nginx is a http server or forward

放到/etc/init.d/nginx启动脚本中第2、3行中

如下所示：

[[email protected] scripts]# vim /etc/init.d/nginx
#!/bin/bash
# chkconfig: 2345 30 60
# description: Nginx is a http server or forward
[ -f /etc/init.d/functions ] && . /etc/init.d/functions
pidfile=/application/nginx/logs/nginx.pid

Start_Nginx(){
  if [ -f $pidfile ];then
    echo "Nginx is running"
  else
    /application/nginx/sbin/nginx &>/dev/null
    action "Nginx is Started" /bin/true
  fi
}
Stop_Nginx(){
    if [ -f $pidfile ];then
    /application/nginx/sbin/nginx -s stop &>/dev/null
    action "Nginx is Stopped" /bin/true
  else
    echo "Nginx is already Stopped"
  fi
}
Reload_Nginx(){
  if [ -f $pidfile ];then
    /application/nginx/sbin/nginx -s reload &>/dev/null
    action "Nginx is Reloaded" /bin/true
  else
    echo "Can't open $pidfile ,no such file or directory"
  fi
}

case $1 in
  start)
    Start_Nginx
    RETVAL=$?
    ;;
  stop)
    Stop_Nginx
    RETVAL=$?
    ;;
  restart)
    Stop_Nginx
    sleep 3
    Start_Nginx
    RETVAL=$?
    ;;
  reload)
    Reload_Nginx
    RETVAL=$?
    ;;
  *)
    echo "USAGE: $0 {start|stop|reload|restart}"
    exit 1
esac
exit $RETVAL

添加开机自启动：

[[email protected] scripts]# chkconfig --add nginx

[[email protected] scripts]# chkconfig --list nginx

nginx 0:off 1:off 2:on 3:on 4:on 5:on 6:off

[[email protected] scripts]# chkconfig nginx off

[[email protected] scripts]# chkconfig --list nginx

nginx 0:off 1:off 2:off 3:off 4:off 5:off 6:off

[[email protected] scripts]# ll /etc/rc.d/rc3.d/|grep nginx

lrwxrwxrwx. 1 root root 15 Jul 26 01:07 K60nginx -> ../init.d/nginx #chkconfig nginx off实质就是创建此文件

[[email protected] scripts]# chkconfig nginx on

[[email protected] scripts]# ll /etc/rc.d/rc3.d/|grep nginx #chkconfig nginx on实质就是创建此文件

lrwxrwxrwx. 1 root root 15 Jul 26 01:09 S30nginx -> ../init.d/nginx