获取redis主从复制链SHELL脚本

获取redis主从复制链SHELL脚本

vi redisnode.sh

#!/bin/sh
master_host=$1
master_port=$2
auth=$3

#判断输入密码是否为空,为空则转化为''
if test ! -n "$auth" -o $# -lt 3
then
    #echo " PASSWD IS NULL"
    auth='\"\"'
fi

#把所有节点格式化保存到一个参数all_note
all_note=''
#获取redis 的master节点
function get_redis_master
{
    master_host=$master_host
    master_port=$master_port
    count=0
    while test $count -lt 5
    do
        #判断输入的节点是否存在
        comm="/usr/local/redis/bin/redis-cli -h $master_host -p $master_port -a $auth "
        redis_exist=`echo "INFO Replication"| $comm |wc -l 2>/dev/null`
        if [ $redis_exist  -eq 0 ];then
            echo " $master_host:$master_port redis not exists or passwd error!"
            master_host=''
            master_port=''
            break
        fi
        echo "INFO Replication" |$comm |grep -q "role:master"
        if test X"$?" == X"0" ;then
            break
        fi
        comm="/usr/local/redis/bin/redis-cli -h $master_host -p $master_port -a $auth "
        master_host=`echo "INFO Replication" |$comm |grep "master_host"|cut -d: -f2 |sed 's/\r//g'`
        master_port=`echo "INFO Replication" |$comm |grep "master_port"|cut -d: -f2 |sed 's/\r//g'`
        count=$((count+1))
    done
    all_note="${master_host}:${master_port}"
#打印主节点
    echo  "MASTER NOTE: ${master_host}:${master_port} "
}

#获取给定节点的从节点
function get_redis_slave
{
    master_host=$1
    master_port=$2
    comm="/usr/local/redis/bin/redis-cli -h $master_host -p $master_port   -a $auth "
    slave_host=`echo "info Replication"  | $comm |grep -Ei slave.:ip|awk -F= '{print $2,$3}' |awk -F, '{print $1,$2}'|awk '{print $1":"$3 }'|awk BEGIN{RS=EOF}'{gsub(/\n/," ");print}'`
}

#获取给定节点的所有复制链
function get_all_redis_slave
{
    master_host=$master_host
    master_port=$master_port
    count=2

    all_host=$master_host:$master_port
    while test $count -lt 20 
    do
        condition=`echo $all_host |sed 's/ //g'`
        if test  ! -n "$condition" ;then
            break
        fi
        for line in $all_host
        do
            tmpline=$tmpline" "$line
            master_host=`echo $line |awk -F: '{print $1}'`
            master_port=`echo $line |awk -F: '{print $2}'`
            get_redis_slave $master_host $master_port
            all_host=`echo $all_host |sed "s/$line//g"`
            all_host=$slave_host" "$all_host
        done
        all_host=`echo $all_host |sed "s/^ //g"`
        condition=`echo $all_host |sed 's/ //g'`
        if test  ! -n "$condition" ;then
            #echo ""
            break
        fi
        #分行分级打印节点
        echo "The ${count}TH NODE: $all_host "
        #一行打印所有节点
        all_note="$all_note $all_host"
        count=$(($count+1))
    done
}
get_redis_master
get_all_redis_slave

sh  redisnode.sh  ip port password 
有密码的redis要求密码主从一致。