Add iam_data_access_service gRPC config

Shilpa Kundapurrequested to merge
feature/iam-data-access-service-config into master

Adds default configuration for the IAM data access service, exposing a gRPC endpoint (host and port, default 5005).

This mirrors the existing iam_auth_service settings but omits the auth-specific keys (enabled, secret_file, http, jwt_*), since this service is gRPC-only.

Changes:

  • config/initializers/1_settings.rb: defaults for iam_data_access_service.grpc (host localhost, port 5005).
  • config/gitlab.yml.example: documented config block.

The setting is reachable from any Ruby code via Gitlab.config.iam_data_access_service.grpc.

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