#community-help

Starting Cluster with Just Two Servers

TLDR JinW asked if a cluster could be started with only 2 servers. Kishore Nallan explained it was possible but issues might arise, recommending a minimum of 3 nodes.

22mo

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Nov 08, 2021 (22 months ago)

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JinW

03:54 AM

Can i start the cluster with only 2 servers?

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Kishore Nallan

03:55 AM

Raft requires a quorum, so need to be odd number. 2 node setup will start fine but will run into issues when network partition etc. happen. You need minimum 3 nodes to survive one node failure.

03:56

Kishore Nallan

03:56 AM

If your dataset is read only you can just run 2 independent nodes and update them separately if you really want only 2 nodes.

JinW

03:57 AM

Perfect, thank you!

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