Global `grpc_client_config`

[z0rc]

Is your feature request related to a problem? Please describe. I'm setting grpc_client_config.grpc_compression: snappy for multiple components in loki.yaml. I need this to reduce traffic between Loki microservices to save on cloud costs.

The problem is, this configuration has to be set individually for every Loki component. Which:

• isn't pretty, my helm chart values is sprinkled with grpc_client_config in multiple places. Like this:

  loki:
  storage_config:
    boltdb_shipper:
      index_gateway_client:
        grpc_client_config:
          grpc_compression: snappy
    tsdb_shipper:
      index_gateway_client:
        grpc_client_config:
          grpc_compression: snappy
  structuredConfig:
    ingester_client:
      grpc_client_config:
        grpc_compression: snappy
    pattern_ingester:
      client_config:
        grpc_client_config:
          grpc_compression: snappy
  query_scheduler:
    grpc_client_config:
      grpc_compression: snappy
  frontend:
    grpc_client_config:
      grpc_compression: snappy
  frontend_worker:
    grpc_client_config:
      grpc_compression: snappy

• easy to miss this options for some component, or have to remember to set it when Loki introduces new microservices (bloom-*, pattern-ingester)

Describe the solution you'd like Ability to set grpc_client_config in config once and it will be applied universally.

Describe alternatives you've considered None.

Additional context N/A

[z0rc]

Is area/helm a correct label for this? Helm values are designed around loki config schema. I'd say this feature request is more about loki configuration, where helm values just follow the pattern.