How to query a node's pruning parameters?

[atharen]

Is there a way to query the specific pruning strategy of a Cosmos-SDK node from the gRPC/REST/CometBFT RPC endpoint(s)?

Or the following parameters:

• pruning-keep-recent: N means to keep all of the last N states
• pruning-interval: N means to delete old states from disk every Nth block.

Also something to bring up, if the pruning config gets changed while the node is live, this would mess with the expected interval right?
Any option how to cater for that?
Basically, is there a deterministic way to query for which blocks historical balances are available?

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Relevant Links:

• Pruning -- how do I "check" that it is working properly? #5601
  • seems for nodes that I would manage through CLI, but I am just querying private and public nodes, not maintaining them (Imagine I got a public endpoint from https://github.com/cosmos/chain-registry).
• Pruning package
  • Part of the server package is responsible for providing the mechanisms necessary to start an ABCI CometBFT application and provides the CLI framework ... necessary to fully bootstrap an application.
  • i.e. only cli, not endpoint.
• Granular Pruning Options #5684 and Add granularity options to pruning state #5709
  • Supplying parameters in the CLI..
• Add keepInterval to PruningOptions to support more flexible pruning strategy  #13058
  • Issue discussing the need for pruning-keep-interval
• Storage Refactor discussion and Storage EPIC
  • discussions about future historical data and archive nodes behaviour/implementation

[alexanderbez]

I do not believe we expose this in the node gRPC method.

Also something to bring up, if the pruning config gets changed while the node is live, this would mess with the expected interval right?

No, you have to restart the node to have the config changes take affect.