Modifying OpenSearch ML Commons cluster Setting

Question

Hello Everyone,

I was wondering if there is a way to modify AWS Opensearch to run task and models on ml node/role only. I see in the [Open search documentation](https://opensearch.org/docs/2.5/ml-commons-plugin/index/) that this can be done by modifying the the opensearch.yml file by adding/changing a custom name and define the node roles as ml:

node.name: ml-node
node.roles: [ml]

How do I accomplish in AWS Openseach.

Thanks,

Accepted Answer

Hello,

Due to managed nature of Amazon OpenSearch service, customers don’t have access to `opensearch.yml` and won’t be able to update thier node role to `ml`.

Answer

Hello,

As discussed previously we cannot update the node to be `ml` specific role due to managed nature of Amazon OpenSearch service but if your use case is to use neural search you can consider using this workaround which uses data nodes without changing their role to `ml`.

Please refer to below document for reference:

[+] https://catalog.workshops.aws/semantic-search/en-US/module-6-neural-search/lab/opensearch-dashboard-dev-tools

Modifying OpenSearch ML Commons cluster Setting

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