Linux下设置Nginx开机自启

1、本地环境

[root@dev ~]#cat /etc/redhat-release

CentOS Linux release 7.5.1804 (Core)

2、在/etc/init.d创建nginx文件，并添加如下内容

[root@dev ~]# vim /etc/init.d/nginx

脚本内容如下：

#!/bin/sh

#

# nginx - this script starts and stops the nginx daemon

#

# chkconfig:   - 85 15

# description:  NGINX is an HTTP(S) server, HTTP(S) reverse \

#               proxy and IMAP/POP3 proxy server

# processname: nginx

# config:      /etc/nginx/nginx.conf

# config:      /etc/sysconfig/nginx

# pidfile:     /var/run/nginx.pid

# Source function library.

. /etc/rc.d/init.d/functions

# Source networking configuration.

. /etc/sysconfig/network

# Check that networking is up.

[ "$NETWORKING" = "no" ] && exit 0

nginx="/usr/sbin/nginx"

prog=$(basename $nginx)

NGINX_CONF_FILE="/etc/nginx/nginx.conf"

[ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx

lockfile=/var/lock/subsys/nginx

make_dirs() {

   # make required directories

   user=`$nginx -V 2>&1 | grep "configure arguments:.*--user=" | sed 's/[^*]*--user=\([^ ]*\).*/\1/g' -`

   if [ -n "$user" ]; then

      if [ -z "`grep $user /etc/passwd`" ]; then

         useradd -M -s /bin/nologin $user

      fi

      options=`$nginx -V 2>&1 | grep 'configure arguments:'`

      for opt in $options; do

          if [ `echo $opt | grep '.*-temp-path'` ]; then

              value=`echo $opt | cut -d "=" -f 2`

              if [ ! -d "$value" ]; then

                  # echo "creating" $value

                  mkdir -p $value && chown -R $user $value

              fi

          fi

       done

    fi

}

start() {

    [ -x $nginx ] || exit 5

    [ -f $NGINX_CONF_FILE ] || exit 6

    make_dirs

    echo -n $"Starting $prog: "

    daemon $nginx -c $NGINX_CONF_FILE

    retval=$?

    echo

    [ $retval -eq 0 ] && touch $lockfile

    return $retval

}

stop() {

    echo -n $"Stopping $prog: "

    killproc $prog -QUIT

    retval=$?

    echo

    [ $retval -eq 0 ] && rm -f $lockfile

    return $retval

}

restart() {

    configtest || return $?

    stop

    sleep 1

    start

}

reload() {

    configtest || return $?

    echo -n $"Reloading $prog: "

    killproc $nginx -HUP

    RETVAL=$?

    echo

}

force_reload() {

    restart

}

configtest() {

  $nginx -t -c $NGINX_CONF_FILE

}

rh_status() {

    status $prog

}

rh_status_q() {

    rh_status >/dev/null 2>&1

}

case "$1" in

    start)

        rh_status_q && exit 0

        $1

        ;;

    stop)

        rh_status_q || exit 0

        $1

        ;;

    restart|configtest)

        $1

        ;;

    reload)

        rh_status_q || exit 7

        $1

        ;;

    force-reload)

        force_reload

        ;;

    status)

        rh_status

        ;;

    condrestart|try-restart)

        rh_status_q || exit 0

            ;;

    *)

        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"

        exit 2

esac

• 这个脚本的来自于nginx官网，网址：https://www.nginx.com/resources/wiki/start/topics/examples/redhatnginxinit/
• nginx="/usr/sbin/nginx"//修改成自己的目录
• NGINX_CONF_FILE="/etc/nginx/nginx.conf" //修改成自己的目录

3、保存文件后对文件设置权限

chmod a+x nginx

4、把脚本添加到系统服务

chkconfig --add /etc/init.d/nginx

5、验证系统服务

service nginx start //开户nginx

service nginx stop //关闭nginx

• 以上部分将nginx添加到了系统服务，下面将nginx添加到开机自启中

6、添加到开机自启

chkconfig nginx on

7、可能遇到的问题

systemd: Starting nginx - high performance web server...

nginx: nginx: the configuration file /etc/nginx/nginx.conf syntax is ok

nginx: nginx: configuration file /etc/nginx/nginx.conf test is successful

systemd: PID file /run/nginx.pid not readable (yet?) after start.

systemd: nginx.service start operation timed out. Terminating.

systemd: Failed to start nginx - high performance web server.

systemd: Unit nginx.service entered failed state.

systemd: nginx.service failed.

解决：

修改nginx.conf中pid文件的路径为/var/run/nginx.pid