redis集群如何切换主从节点

以redis6379为主，redis6380/redis6381为从节点为例。

#/home/redis6379

#/home/redis6380

#/home/redis6381

假设redis6379异常，切换redis6380为新主节点

/home/redis6380/src/redis-cli -p 6380 slaveof NO ONE

OK

验证6380是否可写

/home/redis6380/src/redis-cli -p 6380

127.0.0.1:6380> set nccloud2 2

OK

127.0.0.1:6380> get nccloud2

"2"

设置6381位6380从节点

/home/redis6381/src/redis-cli -p 6381 slaveof 127.0.0.1 6380

OK

验证6381数据一致性

/home/redis6381/src/redis-cli -p 6381

127.0.0.1:6381> get nccloud2

"2"

切换完成