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，经过验证不需要设置，默认启动nginx pid放到此目录中
pid logs/nginx.pid;
1.1 编写nginx启动脚本
[root@devops01-web-53 ~]# cd /server/scripts[root@devops01-web-53 scripts]# vim nginx.sh #!/bin/bash[ -f /etc/init.d/functions ] && . /etc/init.d/functionspidfile=/application/nginx/logs/nginx.pidStart_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 1esacexit $RETVAL 编写完成后测试：
[root@devops01-web-53 scripts]# sh nginx.sh USAGE: nginx.sh {start|stop|reload|restart}[root@devops01-web-53 scripts]# sh nginx.sh startNginx is Started [ OK ][root@devops01-web-53 scripts]# ps -ef|grep nginxroot 12765 1 0 00:46 ? 00:00:00 nginx: master process /application/nginx/sbin/nginxwww 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[root@devops01-web-53 scripts]# sh nginx.sh stopNginx is Stopped [ OK ][root@devops01-web-53 scripts]# sh nginx.sh reloadCan't open /application/nginx/logs/nginx.pid ,no such file or directory[root@devops01-web-53 scripts]# sh nginx.sh restartNginx is already StoppedNginx is Started [ OK ][root@devops01-web-53 scripts]# 1.2 配置开机自启动
加入开机自启动：
[root@devops01-web-53 scripts]# cp nginx.sh /etc/init.d/nginx[root@devops01-web-53 scripts]# chmod +x /etc/init.d/nginx[root@devops01-web-53 scripts]# ll /etc/init.d/nginx-rwxr-xr-x. 1 root root 992 Jul 26 00:48 /etc/init.d/nginx[root@devops01-web-53 scripts]# chkconfig --list nginxservice nginx does not support chkconfig[root@devops01-web-53 scripts]#
举例查看network开机自启动：
[root@devops01-web-53 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[root@devops01-web-53 scripts]# chkconfig --list networknetwork 0:off 1:off 2:on 3:on 4:on 5:on 6:off[root@devops01-web-53 scripts]# chkconfig network on[root@devops01-web-53 scripts]# chkconfig --list networknetwork 0:off 1:off 2:on 3:on 4:on 5:on 6:off[root@devops01-web-53 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）
[root@devops01-web-53 ~]# ll /etc/rc.d/rc3.d/|grep 30lrwxrwxrwx. 1 root root 17 May 14 02:40 K30postfix -> ../init.d/postfix[root@devops01-web-53 ~]# ll /etc/rc.d/rc3.d/|grep 31
关机顺序：第60没有，就用60号
[root@devops01-web-53 ~]# ll /etc/rc.d/rc3.d/|grep 60
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：
[root@devops01-web-53 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/functionspidfile=/application/nginx/logs/nginx.pidStart_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 1esacexit $RETVAL 添加开机自启动：
[root@devops01-web-53 scripts]# chkconfig --add nginx[root@devops01-web-53 scripts]# chkconfig --list nginxnginx 0:off 1:off 2:on 3:on 4:on 5:on 6:off[root@devops01-web-53 scripts]# chkconfig nginx off[root@devops01-web-53 scripts]# chkconfig --list nginxnginx 0:off 1:off 2:off 3:off 4:off 5:off 6:off[root@devops01-web-53 scripts]# ll /etc/rc.d/rc3.d/|grep nginxlrwxrwxrwx. 1 root root 15 Jul 26 01:07 K60nginx -> ../init.d/nginx #chkconfig nginx off实质就是创建此文件[root@devops01-web-53 scripts]# chkconfig nginx on[root@devops01-web-53 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
最后查看已开启了。
[root@devops01-web-53 scripts]# chkconfig --list nginxnginx 0:off 1:off 2:on 3:on 4:on 5:on 6:off
1.3 重启机器，验证开机自启动是否生效
最后重启机器，验证开机是否自启动nginx服务。
[root@devops01-web-53 scripts]# reboot
机器已开机，验证如下：说明开机自启动配置成功。
[root@devops01-web-53 ~]# ps -ef|grep nginxroot 1202 1 0 01:12 ? 00:00:00 nginx: master process /application/nginx/sbin/nginxwww 1204 1202 0 01:12 ? 00:00:00 nginx: worker process www 1205 1202 0 01:12 ? 00:00:00 nginx: worker process www 1206 1202 0 01:12 ? 00:00:00 nginx: worker process www 1207 1202 0 01:12 ? 00:00:00 nginx: worker process root 1292 1276 0 01:15 pts/0 00:00:00 grep nginx[root@devops01-web-53 ~]# lsof -i :80COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAMEnginx 1202 root 6u IPv4 12016 0t0 TCP *:http (LISTEN)nginx 1204 www 6u IPv4 12016 0t0 TCP *:http (LISTEN)nginx 1205 www 6u IPv4 12016 0t0 TCP *:http (LISTEN)nginx 1206 www 6u IPv4 12016 0t0 TCP *:http (LISTEN)nginx 1207 www 6u IPv4 12016 0t0 TCP *:http (LISTEN)[root@devops01-web-53 ~]# netstat -lntup|grep nginxtcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 1202/nginx