服务启动、停止、状态和日志查看等shell脚本

Background

以Redis服务为例，该shell脚本可以通过传入不同的参数实现服务的启动、停止、服务运行状态查看、服务运行日志查看和进入服务shell命令界面等功能。

直接上脚本operator.sh

用法可以使用help参数查看哈，用法例如：
先赋执行权限chmod +x operator.sh
查看帮助命令operator.sh help

#!/bin/bash  
#  
# 服务基本信息
operate=$1
ps_1='./redis-server'
pid_1=`ps -ef | egrep "$ps_1" | egrep -v grep | awk '{print $2}'`
dir_home=/usr/redis/
dir_log=/usr/redis/redis-server.log
host_redis=localhost
port_redis=6377

# 判断输入参数
if [[ -z $operate || $operate = "help" ]]; then
    echo '#####'
    echo "please input your operate [run|stop|status|log|shell]"
    echo '#####'
fi

# 启动服务
if [[ $operate = "run" || $operate = "start" ]]; then
    rm -rf $dir_log
    nohup $dir_home/bin/redis-server $dir_home/redis.conf >> $dir_log 2>&1 &

# 停止服务
elif [[ $operate = "stop" ]]; then
    kill -9 $pid_1

# 查看服务运行状态
elif [[ $operate = "status" ]]; then
    if [[ $pid_1 ]]; then
        # 黄底蓝字
        echo -e "\033[43;34m RUNNING \033[0m"
    else
        # 蓝底黑字
        echo -e "\033[44;30m STOPPED \033[0m"
    fi

# 查看服务运行日志
elif [[ $operate = "log" ]]; then
    if [[ -e $dir_log ]]; then
        tail -f $dir_log
    else
        echo '#####'
        echo "No logs have been generated so far"
        echo '#####'
    fi

# 进入服务命令行界面
elif [[ $operate = "shell" ]]; then
    if [[ $pid_1 ]]; then
        $dir_home/bin/redis-cli -h $host_redis -p $port_redis
    else
        echo '#####'
        echo "The redis service has not been started yet"
        echo '#####'
    fi
fi