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Medium Opensearch · regional

OpenSearch domains should have at least three data nodes

Verifies that OpenSearch domains are configured with at least three data nodes for high availability and resilience.

service: Opensearch
severity: Medium
scope: evaluated in every region

How to fix it

To configure an OpenSearch domain with at least three data nodes, follow these steps:

Open the Amazon OpenSearch Service console at https://console.aws.amazon.com/opensearch/.
Choose the domain that you want to modify.
In the navigation pane, under Cluster configuration, adjust the number of instances to at least three.
Choose Save changes.

See which of your accounts this check is failing on.

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