mimir-2.3.0-rc.2

Changes since 2.3.0-rc.0

This release contains 33 contributions from 9 authors. Thank you!

Note: We tagged a 2.3.0-rc.1 but found a panic in the alertmanager before publishing the 2.3.0-rc.1 pre-release. With 2.3.0-rc.2 we have included the fix for the alertmanager and created a new tag and release candidate.

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2.3.0-rc.2

Grafana Mimir

• [BUGFIX] Alertmanager: revert upstream alertmananger to v0.24.0 to fix panic when unmarshalling email headers #2924 #2925

2.3.0-rc.1

Grafana Mimir

• [CHANGE] Distributor: if forwarding rules are used to forward samples, exemplars are now removed from the request #2725
• [CHANGE] Ingester: experimental -blocks-storage.tsdb.new-chunk-disk-mapper has been removed, new chunk disk mapper is now always used, and is no longer marked experimental. Default value of -blocks-storage.tsdb.head-chunks-write-queue-size has changed to 1000000, this enables async chunk queue by default, which leads to improved latency on the write path when new chunks are created in ingesters. #2762
• [CHANGE] Ingester: removed deprecated -blocks-storage.tsdb.isolation-enabled option. TSDB-level isolation is now always disabled in Mimir. #2782
• [CHANGE] Compactor: -compactor.partial-block-deletion-delay must either be set to 0 (to disable partial blocks deletion) or a value higher than 4h. #2787
• [CHANGE] Query-frontend: CLI flag -query-frontend.align-querier-with-step has been deprecated. Please use -query-frontend.align-queries-with-step instead. #2840
• [CHANGE] Distributor: change the default value of -distributor.remote-timeout to 2s from 20s and -distributor.forwarding.request-timeout to 2s from 10s to improve distributor resource usage when ingesters crash. #2728
• [FEATURE] Introduced an experimental anonymous usage statistics tracking (disabled by default), to help Mimir maintainers make better decisions to support the open source community. The tracking system anonymously collects non-sensitive, non-personally identifiable information about the running Mimir cluster, and is disabled by default. #2643 #2662 #2685 #2732 #2733 #2735
• [FEATURE] Introduced an experimental deployment mode called read-write and running a fully featured Mimir cluster with three components: write, read and backend. The read-write deployment mode is a trade-off between the monolithic mode (only one component, no isolation) and the microservices mode (many components, high isolation). #2754 #2838
• [ENHANCEMENT] Distributor: Add cortex_distributor_query_ingester_chunks_deduped_total and cortex_distributor_query_ingester_chunks_total metrics for determining how effective ingester chunk deduplication at query time is. #2713
• [ENHANCEMENT] Upgrade Docker base images to alpine:3.16.2. #2729
• [ENHANCEMENT] Ruler: Add <prometheus-http-prefix>/api/v1/status/buildinfo endpoint. #2724
• [ENHANCEMENT] Querier: Ensure all queries pulled from query-frontend or query-scheduler are immediately executed. The maximum workers concurrency in each querier is configured by -querier.max-concurrent. #2598
• [ENHANCEMENT] Distributor: Add cortex_distributor_received_requests_total and cortex_distributor_requests_in_total metrics to provide visiblity into appropriate per-tenant request limits. #2770
• [ENHANCEMENT] Distributor: Add single forwarding remote-write endpoint for a tenant (forwarding_endpoint), instead of using per-rule endpoints. This takes precendence over per-rule endpoints. #2801
• [ENHANCEMENT] Added err-mimir-distributor-max-write-message-size to the errors catalog. #2470
• [ENHANCEMENT] Add sanity check at startup to ensure the configured filesystem directories don't overlap for different components. #2828
• [ENHANCEMENT] Go: updated to go 1.19.1. #2637
• [BUGFIX] Ruler: fix not restoring alerts' state at startup. #2648
• [BUGFIX] Ingester: Fix disk filling up after restarting ingesters with out-of-order support disabled while it was enabled before. #2799
• [BUGFIX] Memberlist: retry joining memberlist cluster on startup when no nodes are resolved. #2837
• [BUGFIX] Query-frontend: fix incorrect mapping of http status codes 413 to 500 when request is too large. #2819
• [BUGFIX] Ruler: fix panic when ruler.external_url is explicitly set to an empty string ("") in YAML. #2915

Mixin

• [CHANGE] Dashboards: remove the "Cache - Latency (old)" panel from the "Mimir / Queries" dashboard. #2796
• [FEATURE] Dashboards: added support to experimental read-write deployment mode. #2780
• [ENHANCEMENT] Dashboards: Updated the Writes dashboard to account for samples ingested via the new OTLP ingestion endpoint. #2919
• [ENHANCEMENT] Dashboards: added support to query-tee in front of ruler-query-frontend in the "Remote ruler reads" dashboard. #2761
• [ENHANCEMENT] Dashboards: Introduce support for baremetal deployment, setting deployment_type: 'baremetal' in the mixin _config. #2657
• [ENHANCEMENT] Dashboards: use timeseries panel to show exemplars. #2800
• [ENHANCEMENT] Dashboards: Include per-tenant request rate in "Tenants" dashboard. #2874
• [ENHANCEMENT] Dashboards: Include inflight object store requests in "Reads" dashboard. #2914
• [BUGFIX] Dashboards: stop setting 'interval' in dashboards; it should be set on your datasource. #2802

Jsonnet

• [ENHANCEMENT] Upgrade memcached image tag to memcached:1.6.16-alpine. #2740
• [ENHANCEMENT] Added $._config.configmaps and $._config.runtime_config_files to make it easy to add new configmaps or runtime config file to all components. #2748

Mimirtool

• [BUGFIX] Version checking no longer prompts for updating when already on latest version. #2723

Query-tee

• [CHANGE] Renamed CLI flag -server.service-port to -server.http-service-port. #2683
• [CHANGE] Renamed metric cortex_querytee_request_duration_seconds to cortex_querytee_backend_request_duration_seconds. Metric cortex_querytee_request_duration_seconds is now reported without label backend. #2683
• [ENHANCEMENT] Added HTTP over gRPC support to query-tee to allow testing gRPC requests to Mimir instances. #2683

Mimir Continuous Test

• [ENHANCEMENT] Added basic authentication and bearer token support for when Mimir is behind a gateway authenticating the calls. #2717

Documentation

Full Changelog: mimir-2.3.0-rc0...mimir-2.3.0-rc.2