Redis Cluster - Slave does not FAILOVER

[Tiroshan Madushanka]

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Hi All, I have created a Redis Cluster as bellow. xxx.xxx.xxx.195:9100 xxx.xxx.xxx.196:9100 xxx.xxx.xxx.197:9100 xxx.xxx.xxx.195:9200 xxx.xxx.xxx.196:9200 xxx.xxx.xxx.197:9200 I have experienced that the CLUSTER is FAILED to recover when I stop 2 Redis instances which are masters of the cluster as (2 instances of xxx.xxx.xxx.196) at the same time, xxx.xxx.xxx.195:9100 (Master) xxx.xxx.xxx.196:9100 (Master) xxx.xxx.xxx.197:9100 (Slave) xxx.xxx.xxx.195:9200 (Slave) xxx.xxx.xxx.196:9200 (Master) xxx.xxx.xxx.197:9200 (Slave) But at the same time if I stop 2 instances of .195 server where 9100 - Master and 9200 - Slave, Cluster recovers and works fine Cluster Configuration File : protected-mode no activerehashing yes cluster-enabled yes cluster-config-file /opt/redis/conf/nodes9100.conf cluster-slave-validity-factor 0 cluster-node-timeout 5000 appendonly yes

                 Attached the redis.log of a slave instance.

               Thanks,

               Tiroshan

[andyh]

Redis Cluster can only survive if majority of the masters are alive. You are killing 2 out of 3. 

Please read the doc: https://redis.io/topics/cluster-tutorial

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andyh

Andy Huang (Huangkejun)