设置Nginx开机自动启动（centos6.8上亲测可用）

vim /etc/init.d/nginx
 
粘贴
#!/bin/bash
 # nginx Startup script for the Nginx HTTP Server
 # it is v.0.0.2 version.
 # chkconfig: - 85 15
 # description: Nginx is a high-performance web and proxy server.
 #              It has a lot of features, but it's not for everyone.
 # processname: nginx
 # pidfile: /var/run/nginx.pid
 # config: /usr/local/nginx/conf/nginx.confnginxd=/usr/local/nginx/sbin/nginx
 nginx_config=/usr/local/nginx/conf/nginx.conf
 nginx_pid=/var/run/nginx.pid
 RETVAL=0
 prog="nginx"
 # Source function library.
 . /etc/rc.d/init.d/functions
 # Source networking configuration.
 . /etc/sysconfig/network
 # Check that networking is up.
 [ ${NETWORKING} = "no" ] && exit 0
 [ -x $nginxd ] || exit 0
 # Start nginx daemons functions.start() {
if [ -e $nginx_pid ];then
   echo "nginx already running...."
   exit 1
fi
   echo -n $"Starting $prog: "
   daemon $nginxd -c ${nginx_config}
   RETVAL=$?
   echo
   [ $RETVAL = 0 ] && touch /var/lock/subsys/nginx
   return $RETVAL
}
# Stop nginx daemons functions.
stop() {
        echo -n $"Stopping $prog: "
        killproc $nginxd
        RETVAL=$?
        echo
        [ $RETVAL = 0 ] && rm -f /var/lock/subsys/nginx /var/run/nginx.pid
}
# reload nginx service functions.
reload() {
    echo -n $"Reloading $prog: "
    #kill -HUP `cat ${nginx_pid}`
    killproc $nginxd -HUP
    RETVAL=$?
    echo
}
# See how we were called.
case "$1" in
start)
        start
        ;;
stop)
        stop
        ;;
reload)
        reload
        ;;
restart)
        stop
        start
        ;;
status)
        status $prog
        RETVAL=$?
        ;;
*)
        echo $"Usage: $prog {start|stop|restart|reload|status|help}"
        exit 1
esac
exit $RETVAL
--------------------------------------------------------------------------------------------------------------------------------------------------

说明：
nginxd=/usr/local/nginx/sbin/nginx（改成自己的nginx安装目录）
nginx_config=/usr/local/nginx/conf/nginx.conf（改成自己nginx配置文件的目录）

保存后执行：
chmod a+x /etc/init.d/nginx   
(a+x参数表示 ==> all user can execute  所有用户可执行)

最后将ngix加入到rc.local文件中，这样开机的时候nginx就默认启动了

vim /etc/rc.local
添加
/etc/init.d/nginx start

保存并退出，下次重启就会生效，实现nginx的自启动。

如果重启后发现并没有生效，原因是rc.local这个文件没有执行 那我们修改一下rc.local的权限

chmod +x /etc/rc.d/rc.local

这样就可以了

________________________

【去伪存真】
有网友推荐用这个方法：

我在centos6.8 测试了下会把系统搞崩溃，配置完后重启系统就会一直卡死在启动页，目前也无解，都搞坏了两台虚拟机了。