redis服务脚本

#!/bin/bash
# 定义函数Usage，输出脚本使用方法
usage(){         
    echo "Usage:  redisServer -c command [-e]"
    echo ""
    echo "Optional Command:"
    echo "    start:start redis service "
    echo "        example: -c start [-e];[-e] is cluster-enabled"
    echo "    stop:stop redis service "
    echo "        example: -c stop  "
    exit -1
}
# 安装redis
install(){
    # 指定安装目录
    mkdir -p /usr/local/redis
    cd /usr/local/redis
    # 安装expect和make
    yum -y install expect  
    yum -y install make
    # 从30机器上拉取安装包
    if [[ ! -f "/redis-5.0.3.tar.gz" ]]
    then
        expect<<-END
        set timeout 600
        spawn scp root@192.100.3.30:/openPlatform/redis-5.0.3.tar.gz  /
        expect {
            "(yes/no)?" { send "yes\r"; exp_continue }
            "*assword:" { send "root123\r" }
        }
        expect 
        END
    fi
    # 解压编译
    tar -xf /redis-5.0.3.tar.gz
    cd redis-5.0.3/src
    make 
    make MALLOC=libc
    # 创建日志和数据保存目录
    mkdir /usr/local/redis/data
    cp /usr/local/redis/redis-5.0.3/redis.conf /usr/local/redis/redis-5.0.3/src/redis.conf 
    mkdir /usr/local/redis/log
    # 修改redis配置文件
    sed -i 's/logfile ""/logfile \/usr\/local\/redis\/log\/redis.log/g' redis.conf     
    sed -i 's/dir .\//dir \/usr\/local\/redis\/data/g' redis.conf
    sed -i 's/daemonize no/daemonize yes/g' redis.conf
    sed -i 's/bind 127.0.0.1/bind 0.0.0.0/g' redis.conf 
    sed -i 's/# cluster-node-timeout 15000/cluster-node-timeout 15000/g' redis.conf
    sed -i 's/# cluster-replica-validity-factor 10/cluster-replica-validity-factor 10/g' redis.conf
    sed -i 's/# cluster-migration-barrier 1/cluster-migration-barrier 1/g' redis.conf
    # 开启防火墙，并开放6379和16379端口
    systemctl start firewalld
    firewall-cmd --zone=public --add-port=6379/tcp --permanent
    firewall-cmd --zone=public --add-port=16379/tcp --permanent
    firewall-cmd --reload
    # 创建软连接
    ln -f /usr/local/redis/redis-5.0.3/src/redis-cli /bin/redis-cli
}
# 启动redis服务,作为集群使用
start(){
    filePath="/usr/local/redis/redis-5.0.3/src/redis.conf" 
    name="/usr/local/redis/redis-5.0.3/src/redis-server"
    pid=`ps -ef | grep "$name"| grep -v grep| awk '{print $2}'`
    if [[ $pid ]]
    then 
        kill -9 ${pid}
    fi
    if [[ -f "$filePath" ]]
    then   
        rm -rf  /usr/local/redis/data/*
    else
        install 
    fi
    if [[ $clusterEnabled -eq 1 ]]
    then
        sed -i 's/# cluster-enabled yes/cluster-enabled yes/g' $filePath
    else
        sed -i 's/cluster-enabled yes/# cluster-enabled yes/g' $filePath
    fi
    # 启动redis服务
    $name $filePath 
}
# 停止redis服务，作为新的节点
stop(){
    name="redis-server" 
    pid=`ps -ef | grep "$name"| grep -v grep| awk '{print $2}'`  
    if [ $pid ]
    then
             kill -9 ${pid} 
    fi
    if [[ -f "/usr/local/redis/redis-5.0.3/src/redis.conf" ]] 
    then
             rm -rf  /usr/local/redis/data/*
    fi
}
# 获取参数列表，选项后面的冒号表示该选项需要参数
while getopts "c:e" arg 
do
        case $arg in
            c)
            #参数存在$OPTARG中
                command=$OPTARG
                ;;
             e)
            #参数存在$OPTARG中
                clusterEnabled=1
                ;;
            ?)  
            # 当有不认识的选项的时候arg为?
            echo "unkonw argument"
            usage
            ;;
        esac
done
# 选择执行的指令
case $command in
    "start")
            start 
        ;;
    "stop")
        if [[ $clusterEnabled -ne 1 ]]
        then
            stop
        else
            echo "stop:extra operand:'-e'"
            usage
        fi
        ;;
    "")
        usage
        ;;
    *)
        echo "Error:No such command"
        usage
        ;;
esac