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Shell编写Nginx服务控制脚本

使用源码包安装的Nginx没办法使用”service nginx start”或”/etc/init.d/nginx start”进行操作和控制,所以写了以下的服务控制脚本。

可以使用的选项有:

start     启动

stop     停止

reload   重载

restart    重启

status    状态

test    检查配置文件

1、创建脚本文件并添加执行权限

# touch /etc/init.d/nginx
# chmod +x /etc/init.d/nginx

2、编写脚本内容

#!/bin/bash
# chkconfig: - 85 15
# description: Nginx server control script
# processname: nginx
# config file: /usr/local/nginx/conf/nginx.conf
# pid file: /usr/local/nginx/logs/nginx.pid
# 
# eastmoney public tools
# version: v1.0.0
# create by XuHoo, 2016-9-14
# 

# source function library
. /etc/rc.d/init.d/functions

NGINX_NAME="nginx"
NGINX_PROG="/usr/local/sbin/nginx"
NGINX_PID_FILE="/usr/local/nginx/logs/nginx.pid"
NGINX_CONF_FILE="/usr/local/nginx/conf/nginx.conf"
NGINX_LOCK_FILE="/var/lock/subsys/nginx.lock"

# check current user
[ "$USER" != "root" ] && exit 1

start() {
    status
        if [[ $? -eq 0 ]]; then
            echo $"Nginx (PID $(cat $NGINX_PID_FILE)) already started."
            return 1
        fi
    echo -n $"Starting $NGINX_NAME: "
        daemon $NGINX_PROG -c $NGINX_CONF_FILE
        retval=$?
        echo
    [ $retval -eq 0 ] && touch $NGINX_LOCK_FILE
    return $retval
}

stop() {
    status
        if [[ $? -eq 1 ]]; then
            echo "Nginx server already stopped."
            return 1
        fi
    echo -n $"Stoping $NGINX_NAME: "
        killproc $NGINX_PROG
        retval=$?
        echo
    [ $retval -eq 0 ] && rm -f $NGINX_LOCK_FILE
    return $retval
}

restart() {
    stop
        sleep 1
    start
    retval=$?
    return $retval
}

reload() {
    echo -n $"Reloading $NGINX_NAME: "
        killproc $NGINX_PROG -HUP
        retval=$?
        echo
    return $retval
}

status() {
    netstat -anpt | grep "/nginx" | awk '{print $6}' &> /dev/null
        if [[ $? -eq 0 ]]; then
            if [[ -f $NGINX_LOCK_FILE ]]; then
                return 0
            else
                return 1
            fi
        fi
    return 1
}

_status() {
    status
        if [[ $? -eq 0 ]]; then
            state=`netstat -anpt | grep "/nginx" | awk '{ print $6 }'`
            echo $"Nginx server status is: $state"
        else
            echo "Nginx server is not running"
        fi
}

test() {
    $NGINX_PROG -t -c $NGINX_CONF_FILE
        retval=$?
    return $retval
}

case "$1" in
    start)
        start
        ;;
    stop)
        stop
        ;;
    reload)
        reload
        ;;
    restart)
        restart
        ;;
    status)
        _status
        ;;
    test)
        test
        ;;
    *)
        echo "Usage: { start | stop | reload | restart | status | test }"
        exit 1
esac 

3、将脚本添加到系统服务并设置开机启动

# chkconfig --add nginx
# chkconfig --level 3 nginx on

4、测试脚本是否能够执行

运行命令: service nginx start 或 /etc/init.d/nginx start

更多Nginx负载均衡配置相关教程见以下内容

Nginx负载均衡配置说明 http://www.searu.org/2016-03/129424.htm

Linux下Nginx+Tomcat负载均衡和动静分离配置要点  http://www.searu.org/2016-01/127255.htm

Docker+Nginx+Tomcat7配置简单的负载均衡  http://www.searu.org/2015-12/125907.htm

Nginx负载均衡(主备)+Keepalived  http://www.searu.org/2015-12/126865.htm

使用Nginx作为负载均衡器 http://www.searu.org/2015-12/125789.htm

使用Nginx简单实现负载均衡  http://www.searu.org/2016-08/134443.htm

Nginx负载均衡与高可用的实现 http://www.searu.org/2016-04/130350.htm

Nginx 的详细介绍请点这里
Nginx 的下载地址请点这里

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