获取指定key对应的node节点信息

Posted 2021-01-31 imdba

 

需求：之前写的脚本（https://www.cnblogs.com/imdba/p/10197192.html），每个node上都只有一个slot段范围的情况，本次通过测试，实现了，任意段范围的获取方法。

 

key_slot=`redis-cli -h 5.5.5.101 -p 29001 -a abc123 -c cluster keyslot $1`

node_slot=`sh get_slot_range2.sh 5.5.5.101 29001`

find_tag=0
for i in $node_slot
do
    node_ip=`echo $i | awk -F ‘[|]‘ ‘{print $1}‘`
    range_count=`echo $i | awk -F ‘[|]‘ ‘{print NF}‘`    
    for (( rc=3;rc<=$range_count;rc++ ))
    do
        start_slot=`echo $i | awk -F ‘[|]‘ ‘{print $‘$rc‘}‘ | awk -F ‘[-]‘ ‘{print $1}‘`
        end_slot=`echo $i | awk -F ‘[|]‘ ‘{print $‘$rc‘}‘ | awk -F ‘[-]‘ ‘{print $2}‘`
        for(( j=$start_slot;j<=$end_slot;j++ ))
        do
            if [[ $j == $key_slot ]];then
                echo $node_ip
                find_tag=1
            fi
        done
            if [[ $find_tag == 1 ]];then
            break
            fi
    done
done

说明：get_slot_range2.sh，具体可以参考https://www.cnblogs.com/imdba/p/10115358.html
redis-cli -h $1 -p $2 -c cluster nodes |grep master > ./all
cat all | awk ‘{print $2}‘ | awk ‘$1 ~/@.*/{gsub("@.*","",$1);print $0}‘ > 222
cat all | awk -F " "  ‘{for (i=9;i<=NF;i++)printf("%s", "|"$i);print ""}‘ > 999
paste -d "|" 222 999 > 2_9.txt
cat 2_9.txt

 

key_slot=`redis-cli -h 5.5.5.101 -p 29001 -a abc123 -c cluster keyslot $1`

node_slot=`sh get_slot_range2.sh 5.5.5.101 29001`

find_tag=0
for i in $node_slot
do
    node_ip=`echo $i | awk -F ‘[|]‘ ‘{print $1}‘`
    range_count=`echo $i | awk -F ‘[|]‘ ‘{print NF}‘`    
    for (( rc=3;rc<=$range_count;rc++ ))
    do
        start_slot=`echo $i | awk -F ‘[|]‘ ‘{print $‘$rc‘}‘ | awk -F ‘[-]‘ ‘{print $1}‘`
        end_slot=`echo $i | awk -F ‘[|]‘ ‘{print $‘$rc‘}‘ | awk -F ‘[-]‘ ‘{print $2}‘`
        [ $key_slot -gt $start_slot -a $key_slot -le $end_slot ] && echo $node_ip
    done
done

#感谢浩神，上面标红的可以直接用一个判断获取，不需要循环。