shell编程实战--服务启动脚本的编写

心已赠人 2023-07-06 04:58 96阅读 0赞

# 一、源码安装nginx #

[root@localhost Desktop]# tar zxf nginx-1.17.8.tar.gz 
    [root@localhost Desktop]# ls
    nginx-1.17.8  nginx-1.17.8.tar.gz

解决依赖性：

yum install -y gcc openssl-devel pcre-devel

安装：

cd nginx-1.17.8/
    ./configure --prefix=/usr/local/nginx
    make && make install

起服务

/usr/local/nginx/sbin/nginx
    /usr/local/nginx/sbin/nginx -V #查看版本信息
    netstat -ntulp | grep nginx

# 二、nginx服务启动脚本的编写： #

在`/etc/init.d/`编写脚本`nginxd`：

[root@localhost init.d]# cat nginxd
    #!/bin/bash
    . /etc/init.d/functions			#加载系统函数库
    path=/usr/local/nginx/sbin		#设定nginx启动命令路径
    
    function start() { 
    	if [ `netstat -antlpe|grep nginx|wc -l` -eq 0 ];then
    		$path/nginx
    		RETVAL=$?
    		if [ $RETVAL -eq 0 ];then
    			action "nginx is started" /bin/true
    			return $RETVAL
    		else
    			action "nginx is started" /bin/false
    			return $RETVAL
    		fi
    	else
    		echo "nginx is running"
    	fi
    }
    
    function stop() { 
            if [ `netstat -antlpe|grep nginx|wc -l` -ne 0 ];then
                    $path/nginx -s stop
                    RETVAL=$?
                    if [ $RETVAL -eq 0 ];then
                            action "nginx is stoped" /bin/true
                            return $RETVAL
                    else
                            action "nginx is stoped" /bin/false
                            return $RETVAL
                    fi
            else
                    echo "nginx is not running"
    		return 0
    	fi
    }
    
    case "$1" in
    	start)
    	start
    	;;
    	stop)
    	stop
    	;;
    	restart)
    	stop
    	sleep 1
    	start
    	;;
    	*)
    		echo $"USeage: $0 {start|stop|restart}"
    		exit 1
    esac

测试：

cd /etc/init.d/
    [root@localhost init.d]# sh nginxd start
    nginx is started                                           [ OK ]
    [root@localhost init.d]# sh nginxd stop
    nginx is stoped                                            [ OK ]
    [root@localhost init.d]# sh nginxd start
    nginx is started                                           [ OK ]
    [root@localhost init.d]# sh nginxd restart
    nginx is stoped                                            [ OK ]
    nginx is started                                           [ OK ]
    [root@localhost init.d]# sh nginxd restartttt
    USeage: nginxd { start|stop|restart}