[Feature Request] Add opensearch-node subcommand to print current metadata

[phvalguima]

Is your feature request related to a problem? Please describe

Hi,

I have a use-case where I want to automatically, once I attach a new volume to a given node: detect if a given disk already has data from OpenSearch indices and if that data corresponds to the existing cluster or is coming from another cluster.

The goal is, in the event of a disaster, to recover by attaching the disks to another cluster and recovering the original data.

For that, I need to be able to print the metadata available in the disk.

Describe the solution you'd like

I have crafted a small opensearch-node-like CLI command that prints the metadata here: https://github.com/phvalguima/opensearch-metadata-cli

I'd love to evolve it to print a json-formatted output with the metadata of the current node and contribute it back to OpenSearch. Is it something the community is interested on?

Related component

Cluster Manager

Describe alternatives you've considered

No response

Additional context

No response

[dblock]

[Catch All Triage - 1, 2, 3, 4]

[phvalguima]

Hi @dblock I was working on that change btw. If that is something of interest, I'd contribute that standalone command back to OpenSearch.

[dblock]

Please do! Assigned this issue to you.