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Medium Elasticsearch · regional

Elasticsearch domains should be configured with at least three dedicated master nodes

Verifies that Elasticsearch domains have at least three dedicated master nodes configured for cluster stability.

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

How to fix it

To configure an Elasticsearch domain with at least three dedicated master nodes, follow these steps:

Open the Amazon Elasticsearch Service console at https://console.aws.amazon.com/es/.
Choose the domain that you want to modify.
In the navigation pane, under Domain configuration, choose Elasticsearch cluster.
Enable 'Dedicated master' and set the number of dedicated master nodes to 3 or more.
Choose Save changes.

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