1. 把redis集群中的 master 節點信息記錄在文件 redis_object_port.info 中， 方便下一步遍歷各實例中的大 keys
redis-cli -h 10.240.47.147 -p 7000 cluster nodes | grep master | awk '{print $2}' | awk -F ':' '{print " -h " $1 " -p " $2}' > redis_object_port.info
2. 遍歷各個實例中的大keys ( 參數 -i 0.1, 表示每隔100條scan指令就休眠0.1s, 這樣redis的ops就不會劇烈抬高，但是掃描時間會變長)
more redis_object_port.info | while read object; do redis-cli $object --bigkeys -i 0.1 ; done > redis_object_bigkey.result
++++++++++++++++++++++++++++++++腳本參數化 ++++++++++++++++++++++++++++++++++++++++++++
#!/bin/sh
# 腳本說明：
# 通過輸入2個參數： redis集群中任意一個實例的 IP地址 和 端口 ，自動查詢出該redis集群中的大key
IP=$1
PORT=$2
echo "" > redis_object_port.info
redis-cli -h $IP -p $PORT cluster nodes | grep master | awk '{print $2}' | awk -F ':' '{print " -h " $1 " -p " $2}' > redis_object_port.info
echo "" > redis_object_bigkey.result
more redis_object_port.info | while read object
do
redis-cli $object --bigkeys -i 0.1
done >> redis_object_bigkey.result
++++++++++++++++++++++++++++++++腳本結束 ++++++++++++++++++++++++++++++++++++++++++++