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Documentation Grafana Mimir Set up Deploy with Jsonnet and Tanka Migrate query-scheduler to ring-based service discovery
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Migrate query-scheduler from DNS-based to ring-based service discovery

The query-scheduler supports two service discovery mechanisms:

To migrate the query-scheduler from DNS-based to ring-based service discovery when your Mimir cluster is deployed using Jsonnet:

  1. Configure the query-scheduler instances to join a ring, but keep the querier and query-frontend instances discovering query-schedulers via DNS:
    jsonnet
    {
      _config+:: {
        query_scheduler_service_discovery_mode: 'ring',
        query_scheduler_service_discovery_ring_read_path_enabled: false,
      }
    }
  2. Wait until query-scheduler changes have been applied.
  3. Open the query-scheduler ring status page and ensure all query-scheduler instances are registered to the ring.
  4. Configure query-frontend and querier instances to discover query-schedulers via the ring:
    jsonnet
    {
      _config+:: {
        query_scheduler_service_discovery_mode: 'ring',
        query_scheduler_service_discovery_ring_read_path_enabled: true,
      }
    }