CODEWITHSUNDEEP
kubernetesredisredis-cluster
jellyFish
jellyFish

Reputation: 55

Redis replica nodes takeover

I have a redis cluster with 6 nodes {3 Master and 3 Replicas running in Kubernetes}, will the replicas take-over the master nodes if I delete all the 3 master nodes simultaneously.

Upvotes: 0

Views: 141

Answers (1)

for_stack
for_stack

Reputation: 23021

NO, these replicas will fail to take-over.

In order to successfully failover, you must ensure there're N / 2 + 1 masters alive. In your case, you must ensure that 2 masters are alive, so that a replica can be elected as the new master.

Only master nodes can votes for promoting a replica node. If all 3 masters are killed, no replica can be promoted.

Upvotes: 1

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