关于redis哨兵后台信息的解释

最新推荐文章于 2025-05-24 21:11:01 发布

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本文记录了一次Redis主从切换的具体流程，包括检测到主节点宕机、选举新的主节点、将从节点提升为主节点、重新配置从节点等关键步骤。

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# +sdown master myMaster  192.168.137.101 6379  #说明master服务已经宕机
# +odown master myMaster  192.168.137.101 6379 #quorum 1/1  
# +new-epoch 1
# +try-failover master myMaster 192.168.137.101 6379  #开始恢复
# +vote-for-leader a496627d72d98fde98b8270e297ab32b330ebac7 1  #投票选举哨兵leader，现在就一个哨兵所以leader就自己
# +elected-leader master myMaster 192.168.137.101 6379 # 选中leader
# +failover-state-select-slave master myMaster 192.168.137.101 6379 #选择master
# +selected-slave slave 192.168.137.102:6379 192.168.137.102 6379 @ myMaster 192.168.137.101 6379  #选中192.168.137.102 6379作为切换
* +failover-state-send-slaveof-noone slave 192.168.137.102:6379 192.168.137.102 6379 @ myMaster 192.168.137.101 6379  #发送slaveof no one命令
* +failover-state-wait-promotion slave 192.168.137.102:6379 192.168.137.102 6379 @ myMaster 192.168.137.101 6379   #等待升级master
# +promoted-slave slave 192.168.137.102:6379 192.168.137.102 6379 @ myMaster 192.168.137.101 6379  #192.168.137.102 6379升级为master
# +failover-state-reconf-slaves master myMaster 192.168.137.101 6379
* +slave-reconf-sent slave 192.168.137.103:6379 192.168.137.103 6379 @ myMaster 192.168.137.101 6379
* +slave-reconf-inprog slave 192.168.137.103:6379 192.168.137.103 6379 @ myMaster 192.168.137.101 6379
* +slave-reconf-done slave 192.168.137.103:6379 192.168.137.103 6379 @ myMaster 192.168.137.101 6379
# +failover-end master myMaster 192.168.137.101 6379 #故障恢复完成
# +switch-master myMaster 192.168.137.101 6379 192.168.137.102 6379  #master切换
* +slave slave 192.168.137.103:6379 192.168.137.103 6379 @ myMaster 192.168.137.102 6379  #添加master从库
* +slave slave 192.168.137.101:6379 192.168.137.101 6379 @ myMaster 192.168.137.102 6379  #添加master从库
# +sdown slave 192.168.137.101:6379 192.168.137.101 6379 @ myMaster 192.168.137.102 6379  #发现192.168.137.101 6379故障