Grafana Mimir Helm chart release notes on Grafana Labs

Grafana Mimir Helm chart version 3.2 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 3.2 release notes

Grafana Labs is excited to announce version 3.2 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.4 or Grafana Enterprise Metrics (GEM) v2.3. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

To learn about new features and enhancements in Grafana Mimir or GEM, see the release notes for Grafana Mimir v2.4 or Grafana Enterprise Metrics v2.3.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Note: If you are upgrading from Grafana Mimir Helm chart 3.1, review the list of important changes that follow.

Features and enhancements

Notable enhancements are as follows:

Added support for topologySpreadConstraints.
Replaced the default anti-affinity rules with topologySpreadConstraints for all components which puts less restrictions on where Kubernetes can run pods.
Updated the anti affinity rules in the sizing plans (small.yaml, large.yaml, capped-small.yaml, or capped-large.yaml). The sizing plans now enforce that no two pods of the ingester, store-gateway, or alertmanager StatefulSets are scheduled on the same Node. Pods from different StatefulSets can share a Node.
Support for Openshift Route resource for NGINX has been added.

Important changes

In Grafana Mimir Helm chart v3.2, the following changes were made:

If you are not using the sizing plans (small.yaml, large.yaml, capped-small.yaml, or capped-large.yaml) in production, you must reintroduce pod affinity rules for the ingester and store-gateway. This also fixes a missing label selector for the ingester. Merge the following configuration into your custom values file:

ingester:
  affinity:
    podAntiAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchExpressions:
              - key: target
                operator: In
                values:
                  - ingester
          topologyKey: "kubernetes.io/hostname"
        - labelSelector:
            matchExpressions:
              - key: app.kubernetes.io/component
                operator: In
                values:
                  - ingester
          topologyKey: "kubernetes.io/hostname"
store_gateway:
  affinity:
    podAntiAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchExpressions:
              - key: target
                operator: In
                values:
                  - store-gateway
          topologyKey: "kubernetes.io/hostname"
        - labelSelector:
            matchExpressions:
              - key: app.kubernetes.io/component
                operator: In
                values:
                  - store-gateway
          topologyKey: "kubernetes.io/hostname"

Bug fixes

PR 2906: Fix wrong label selector in ingester anti affinity rules in the sizing plans.
PR 3262: Query-scheduler no longer periodically terminates connections from query-frontends and queriers. This caused some queries to time out and EOF errors in the logs.

Grafana Mimir Helm chart version 3.3 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 3.3 release notes

Grafana Labs is excited to announce version 3.3 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.4 or Grafana Enterprise Metrics (GEM) v2.4. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

To learn about new features and enhancements in Grafana Mimir or GEM, see the release notes for Grafana Mimir v2.4 or Grafana Enterprise Metrics v2.4.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Important changes

This is a re-release of Grafana Mimir Helm chart version 3.2 to include GEM version v2.4.

Grafana Mimir Helm chart version 4.0 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 4.0 release notes

Grafana Labs is excited to announce version 4.0 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.5 and Grafana Enterprise Metrics v2.5. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

To learn about new features and enhancements in Grafana Mimir or GEM, see the release notes for Grafana Mimir v2.5 or Grafana Enterprise Metrics v2.5.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Note: If you are upgrading from Grafana Mimir Helm chart 3.3, review the list of important changes that follow.

Features and enhancements

Notable enhancements are as follows:

Zone aware replication Helm now supports deploying the ingesters and store-gateways as different availability zones. The replication is also zone-aware, therefore multiple instances of one zone can fail without any service interruption and rollouts can be performed faster because many instances of each zone can be restarted together, as opposed to them all restarting in sequence.
Running without root privileges All Mimir, GEM, and Agent processes no longer require root privileges to run.
Unified reverse proxy (gateway) configuration for Mimir and GEM This change allows you to more easily upgrade from Mimir to GEM, without any downtime. The unified configuration also makes it possible to autoscale the GEM gateway pods and it supports OpenShift Route. The change also deprecates the nginx section in the configuration. The section will be removed in release 7.0.0.
Various quality of life improvements
- Rollout strategies with zero downtime
- Read-path and compactor configuration provide better default settings
- OTLP ingestion support in the Nginx configuration
- A default configuration for Alertmanager: its user interface, as well as the sending of alerts from the ruler, work out of the box

Important changes

In Grafana Mimir Helm chart v4.0, the following changes were made:

Breaking change, zone aware replication is enabled by default, which can cause data loss if upgrade procedure is not followed, for details about how to upgrade, see the Helm changelog.
We updated our sizing plans to make them better reflect how we recommend running Mimir and GEM in production.
Breaking change, due to the sizing plans updates, users of the small plan must consult the Helm changelog.
Updated MinIO The MinIO sub-chart was updated from 4.x to 5.0.0. This update inherits a breaking change because the MinIO gateway mode was removed.

Bug fixes

PR 3170: Fix an issue that caused metamonitoring secrets to be created incorrectly.
PR 3208: Nginx: fixed imagePullSecret value reference inconsistency.
PR 3169: Move the activity tracker log from /data to /active-query-tracker to remove ignore log messages.
PR 3087: Fix Invalid ingress nginx config due to newline in prometheusHttpPrefix Helm named templates.
PR 3479: Added missing endpoint for OTLP in NGINX.

Grafana Mimir Helm chart version 4.1 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 4.1 release notes

Grafana Labs is excited to announce version 4.1 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.6 and Grafana Enterprise Metrics v2.5. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

To learn about new features and enhancements in Grafana Mimir or GEM, see the release notes for Grafana Mimir v2.6 or Grafana Enterprise Metrics v2.5.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Note: If you are upgrading from a previous major version, review the changelog entry for all the major releases since then and perform the necessary migrations.

Features and enhancements

Notable enhancements are as follows:

PrometheusRule objects Add ability to manage PrometheusRule for metamonitoring with Prometheus operator from the Helm chart. This feature allows you to create arbitrary PrometheusRule objects that your Prometheus operator will detect and start evaluating the rules inside them.

Note: This does not configure the Mimir cluster to evaluate the rules.

We have also bundled the recommended recording rules and alerts for monitoring Mimir with the Helm chart. The recording rules are used in the mimir-mixin dashboards, and the alerts cover the health of the Mimir cluster. To enable the recommended rules, set metaMonitoring.prometheusRule.mimirRules: true. To enable the recommended alerts, set metaMonitoring.prometheusRule.mimirAlerts: true.

Deploying extra objects The Helm chart now supports deploying arbitrary objects via the extraObjects section. For example:

extraObjects:
  - kind: ConfigMap
    apiVersion: v1
    metadata:
      name: extra-cm-{{ .Release.Name }}
    data: |
      extra.yml: "does-my-install-need-extra-info: true"

Bug fixes

PR 3686: Change rollout-operator to use the same PodSecurityPolicy as the Mimir/GEM service account.
PR 3780: Gateway: Fixed checksum/config label when using NGINX.
PR 3781: Gateway: Disable ServiceMonitor when using NGINX.
PR 3851: Gateway: Expose OTLP ingestion path in the NGINX routing configuration.
PR 3851: Gateway: use alertmanager headless service in the NGINX routing configuration.
PR 3919: Ingester: Increase persistent volume in capped-small.yaml to 50Gi.
PR 4124: NGINX: Set server variables in configuration so that IP addresses are re-resolved when TTLs expire.
PR 4164: PodSecurityPolicy: Do not include namespace for the definition as it is not needed and some tools reject it.

Grafana Mimir Helm chart version 4.2 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 4.2 release notes

Grafana Labs is excited to announce version 4.2 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.6 or Grafana Enterprise Metrics (GEM) v2.6. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

To learn about new features and enhancements in Grafana Mimir or GEM, see the release notes for Grafana Mimir v2.6 or Grafana Enterprise Metrics v2.6.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Note: If you are upgrading from a previous major version, review the changelog entry for all the major releases since then and perform the necessary migrations.

Important changes

This is a re-release of Grafana Mimir Helm chart version 4.1 to include GEM version v2.6.

It also includes the following notable change:

You can override the NGINX error log level with the nginx.nginxConfig.errorLogLevel value, and disable the access log with the nginx.nginxConfig.accessLogEnabled value.

Bug fixes

4.2.1

PR 4818: Updated Go version in Mimir and GEM images to 1.20.3 and 1.19.8 to fix CVE-2023-24538.

Grafana Mimir Helm chart version 4.3 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 4.3 release notes

Grafana Labs is excited to announce version 4.3 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.7 or Grafana Enterprise Metrics (GEM) v2.7. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

To learn about new features and enhancements in Grafana Mimir or GEM, see the release notes for Grafana Mimir v2.7 or Grafana Enterprise Metrics v2.7.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Note: If you are upgrading from a previous major version, review the changelog entry for all the major releases since then and perform the necessary migrations.

Important changes

The ruler deployment max surge was changed from 0 to 50%, and max unavailable from 1 to 0.

Features and enhancements

Notable enhancements are as follows:

nginx autoscaling Support autoscaling/v2 HorizontalPodAutoscaler for nginx autoscaling starting with Kubernetes 1.23.
Default pod security context Set default pod security context under rbac.podSecurityContext for easier install on OpenShift.
Cache support for GEM’s admin bucket The cache will be enabled by default when you use the small.yaml, large.yaml, capped-small.yaml or capped-large.yaml Helm values file.

Note: For more information, refer to the Grafana Enterprise Metrics configuration.

Bug fixes

PR 4299: Allow override of Kubernetes version for nginx HPA.
PR 4353: Do not generate query-frontend-headless service if query scheduler is enabled. Fixes parity with jsonnet.
PR 4126: Apply clusterLabel to ServiceMonitors for kube-state-metrics, kubelet, and cadvisor.
PR 4392: Add http port in distributor headless service. Fixes parity with jsonnet.
PR 4272: Generate the pod security context on the pod level in graphite web deployment, instead of on container level.
PR 4485: Fix kube-state-metrics metricRelabelings dropping pods and deployments.
PR 4407: Allow for single extraArg flags in templated memcached args.

4.3.1

PR 4803: Updated Go version in Mimir and GEM images to 1.20.3 to fix CVE-2023-24538.

Grafana Mimir Helm chart version 4.4 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 4.4 release notes

Grafana Labs is excited to announce version 4.4 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.8 or Grafana Enterprise Metrics (GEM) v2.8. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

To learn about new features and enhancements in Grafana Mimir or GEM, see the release notes for Grafana Mimir v2.8 or Grafana Enterprise Metrics v2.8.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Note: If you are upgrading from a previous major version, review the changelog entry for all the major releases since then and perform the necessary migrations.

Important changes

Store-gateway rollout is sped up by setting unregister_on_shutdown for store-gateway to false by default.

Features and enhancements

Notable enhancements are as follows:

Add support for Vault Agent When enabled, the Pod annotations for TLS configurable components are updated to allow a running Vault Agent to fetch secrets from Vault and to inject them into a Pod. The annotations are updated for the following components: admin-api, alertmanager, compactor, distributor, gateway, ingester, overrides-exporter, querier, query-frontend, query-scheduler, ruler, store-gateway.
Default pod security context Set default pod security context under rbac.podSecurityContext for easier install on OpenShift.
Configure storageClass per zone You can now configure storageClass per zone for Alertmanager, StoreGateway and Ingester.
Allow for deploying mixin dashboards as part of the helm chart If enabled, a ConfigMap will be created for each dashboard which can be used for Grafana.
Allow definition of multiple topology spread constraints Backwards compatibility is kept by supporting the old object/dict syntax next to the new array based syntax.

Bug fixes

PR 4728: Fix route to service port mapping.
PR 4540 Include podAnnotations on the tokengen Job.
PR 4573: Add http port in ingester and store-gateway headless services.
PR 4642 Set gateway and nginx HPA MetricTarget type to Utilization to align with usage of averageUtilization.
PR 4716 Add missing imagePullSecrets configuration to the graphite-web deployment template.

Grafana Mimir Helm chart version 4.5 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 4.5 release notes

Grafana Labs is excited to announce version 4.5 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.9 or Grafana Enterprise Metrics (GEM) v2.9. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

To learn about new features and enhancements in Grafana Mimir or GEM, see the release notes for Grafana Mimir v2.9 or Grafana Enterprise Metrics v2.9.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Note: If you are upgrading from a previous major version, review the changelog entry for all the major releases since then and perform the necessary migrations.

Important changes

The graphite-web component was removed from the graphite proxy. The graphite-web component had several configuration issues which meant it was failing to process requests. The graphite-web component was used to render queries that the native query engine cannot, however the majority of graphite functions and features are supported by the native GEM graphite query engine and there is development ongoing to reach feature parity.
Cardinality estimation is enabled in the query-frontend via frontend.query_sharding_target_series_per_shard in the Mimir configuration for query sharding by default if results-cache.enabled is true. This change improves query performance in case the overhead of query sharding is more than its benefit.

Features and enhancements

Notable enhancements are as follows:

The Nginx read timeout (proxy_read_timeout) is increased to 300 seconds (increase from default 60 seconds), so that it doesn’t interfere with the querier’s default 120 seconds timeout (mimir.structuredConfig.querier.timeout).
Store-gateway: set GOMEMLIMIT to the memory request value. This should reduce the likelihood the store-gateway may go out of memory, at the cost of an higher CPU utilization due to more frequent garbage collections when the memory utilization gets closer or above the configured requested memory.
Store-gateway: dynamically set GOMAXPROCS based on the CPU request. This should reduce the likelihood a high load on the store-gateway will slow down the entire Kubernetes node.
Added global.podLabels which can add POD labels to PODs directly controlled by this chart (mimir services, nginx).
Enabled the track_sizes feature for Memcached pods to help determine cache efficiency.

Bug fixes

PR 5031 Fix Pod Anti-Affinity rule to allow ingesters from the same zone to run on same node, by using zone label since the old app.kubernetes.io/component did not allow for this.

Grafana Mimir Helm chart version 5.0 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 5.0 release notes

Grafana Labs is excited to announce version 5.0 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.9 or Grafana Enterprise Metrics (GEM) v2.9. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Note: For a migration guide from mimir-distributed version 4.X to 5.0, see Migrate the Helm chart from version 4.x to 5.0.

Important changes

Breaking change: PodSecurityPolicy objects are no longer rendered on Kubernetes versions 1.24 or higher. This resource type was deprecated in Kubernetes version 1.21 and was removed in version 1.25. Due to how Helm manages release histories, the mimir-distributed Helm chart can no longer be upgraded if a PodSecurityPolicy was present during a Kubernetes upgrade from 1.24 to 1.25. In order to remediate this, mimir-distributed no longer renders the PodSecurityPolicy on Kubernetes 1.24. For a migration guide from mimir-distributed version 4.X to 5.0, see Migrate the Helm chart from version 4.x to 5.0.

Features and enhancements

Notable enhancements are as follows:

Use metadata cache for ruler bucket scans. This greatly reduces pressure to the object store by the ruler.
Support metricRelabelings in the monitoring serviceMonitor resources via metaMonitoring.serviceMonitor.metricRelabelings.
Increase the default number of ingester Pods that can restart at a time in a multi-zone deployment. This speeds up deployments with more than 25 ingesters per zone.

Grafana Mimir Helm chart version 5.1 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 5.1 release notes

Grafana Labs is excited to announce version 5.1 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.10 or Grafana Enterprise Metrics (GEM) v2.10. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Important changes

Deployments now set maxUnavailable to 0 and maxSurge to 15% by default to avoid becoming unavailable during rollout. Please note that if you have set maxSurge=0, the upgrade will fail to execute with the following error
```
Invalid value: intstr.IntOrString{Type:0, IntVal:0, StrVal:""}: may not be 0 when `maxSurge` is 0
```
and you have to adjust your values of maxSurge and maxUnavailable.

Features and enhancements

Notable enhancements are as follows:

Pod management policy is now configurable for store-gateways and compactors.
Nginx now listens on IPv6 pod interface as well if available.
Distributor and querier CPU utilization better in line with CPU request by using GOMAXPROCS.

5.1.1

PR 6371: Updated the Mimir and GEM images to 2.10.2. These include some bugfixes and update grpc-go library to 1.57.1 and golang.org/x/net to 0.17, which include fix for CVE-2023-44487.

5.1.2

PR 6427: Updated the Mimir and GEM images to 2.10.3. These include a fix to the previous release. Update grpc-go library to 1.57.2-dev that includes a fix for a bug introduced in 1.57.1.

5.1.3

PR 6654: Updated the Mimir and GEM images to 2.10.4. This updates otelhttp library to v0.44.0 as a mitigation for CVE-2023-45142. For GEM it also fixes memory leak in Admin client.

5.1.4

PR 6863: Updated the memcached-exporter dependency to version 0.14.1 which includes a fix for CVE-2023-39325.

Grafana Mimir Helm chart version 5.2 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 5.2 release notes

Grafana Labs is excited to announce version 5.2 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.11 or Grafana Enterprise Metrics (GEM) v2.11. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

The highlights that follow include the top features, enhancements, and bugfixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Important changes

The default timeout used for index-queries caches is increased from 200ms to 450ms to reduce the number of connections opened under increased load.
The default clusterDomain is changed from cluster.local to cluster.local. to reduce the number of DNS lookups performed.

Features and enhancements

Notable enhancements are as follows:

The lifecycle management of persistent volumes belonging to compactor, ingester, store-gateway and alertmanager components can now be configured via the parameters enableRetentionPolicy, whenScaled and whenDeleted.
The chart now supports the option to use a plain Ingress resource instead of a gateway service.

Bug fixes

5.2.1

PR 7199: Revert PR 6999, introduced in 5.2.0, which broke installations relying on the default value of blocks_storage.backend: s3. If mimir.structuredConfig.blocks_storage.backend: s3 wasn’t explicitly set, then Mimir would fail to connect to S3 and will instead try to read and write blocks to the local filesystem.

5.2.2

PR 7555: Update GEM to v2.11.2

5.2.3

PR 7632: Fix crashloop in GEM admin-cache container

Grafana Mimir Helm chart version 5.3 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 5.3 release notes

Grafana Labs is excited to announce version 5.3 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.12 or Grafana Enterprise Metrics (GEM) v2.12. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

The highlights that follow include the top features, enhancements, and bug fixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Important changes

A number of timeout settings have been improved upon:

Relaxed the hash ring heartbeat period and timeout for the distributor, ingester, store-gateway and compactor. This reduces load in intra component communication with the tradeoff that abrupt component failures take longer to detect. The new values are taken from Grafana Cloud Metrics operations.
Increased the timeout for writing recording rule results to 10s to accommodate large result sets.
Increased the distributor termination grace period from 60s to 100s to give more time for a clean termination.
Increased the read timeout for chunks and index caches using memcached from 450ms to 750ms.
Tuned the GRPC maximum connection age and shutdown delay for the distributor and query-frontend components to avoid invoking components that are shutting down.

Features and enhancements

Notable enhancements are as follows:

Added experimental feature for deploying KEDA ScaledObjects as part of the helm chart for the components: distributor, querier, query-frontend and ruler. For more details please see the values sections kedaAutoscaling, distributor.kedaAutoscaling, ruler.kedaAutoscaling, query_frontend.kedaAutoscaling, and querier.kedaAutoscaling, and the Helm chart changelog.
Gateway: Added option for configuring whether or not NGINX binds IPv6: gateway.nginx.config.enableIPv6.

Bug fixes

5.3.1

PR 9215: Update GEM to v2.12.1

Grafana Mimir Helm chart version 5.4 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 5.4 release notes

Grafana Labs is excited to announce version 5.4 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.13 or Grafana Enterprise Metrics (GEM) v2.13. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

The highlights that follow include the top features, enhancements, and bug fixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Important changes

A number of timeout settings are improved:

Fine-tuned termination grace periods for all components. This helps to ensure that components can shut down gracefully, without interrupting queries or write requests.
Continuous test and smoke test containers now use the Mimir image, as the continuous test code is now part of Mimir. As a result, the image section in the values file now replaces smoke_test.image and continuous_test.image, and the latter two are removed.

Features and enhancements

Notable enhancements are as follows:

Experimental support for a dedicated ruler query path. With a dedicated set of queriers, query-frontends, and query-schedulers, outages and slow-downs on the main query path don’t affect rule evaluations.

Grafana Mimir Helm chart version 5.5 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 5.5 release notes

Grafana Labs is excited to announce version 5.5 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.14 or Grafana Enterprise Metrics (GEM) v2.14. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

The highlights that follow include the top features, enhancements, and bug fixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Important changes

The ingester is configured with GOMAXPROCS to help with overhead from the Go scheduler, observed on hosts with a large number of CPU cores.
The GEM query-frontend logs the query author’s access policy name and token name in the query statistics logs. This provides more visibility as which token is running a potentially expensive query.
Dashboards are updated to allow switching between classic and native histograms in the queries that support it.

Features and enhancements

Notable enhancements are as follows:

The dashboard configuration maps support setting a namespace.
The topologySpreadConstraints configuration of all components is updated to better match what is allowed in Kubernetes.
Metamonitoring supports AWS Signature Version 4 (sigv4) authentication for remote write.
Metamonitoring is updated to allow its Grafana Agent pods to set image pull secrets, node selectors, tolerances, topology spread constraints, and resource requests and limits.
The continous-test is updated to allow setting separate read and write URLs.
The continous-test can be enabled in GEM.

Grafana Mimir Helm chart version 5.6 release notes

Thu, 16 Apr 2026 01:00:22 +0000

Grafana Mimir Helm chart version 5.6 release notes

Grafana Labs is excited to announce version 5.6 of the Grafana Mimir Helm chart, which is compatible with Grafana Mimir v2.15 and Grafana Enterprise Metrics (GEM) v2.15. The mimir-distributed Helm chart is the best way to install Mimir on Kubernetes.

The highlights that follow include the top features, enhancements, and bug fixes in this release. For a comprehensive list of changes, see the Helm chart changelog.

Important changes

The rollout-operator version has been updated to version 0.20.0.

The track_sizes feature for Memcached pods has been removed.

Features and enhancements

Support has been added for federation-frontend in the values file. The federation-frontend allows you to query data from multiple GEM clusters using a single endpoint. For more information about cluster query federation, refer to the federation-frontend documentation.

You can create a service account for the alertmanager with dedicated permissions and authorizations by setting alertmanager.serviceAcount.create in the values file.