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Breaking changes

7.8.1 - 2020/07/28

Add headless Service for StatefulSet

A headless Service has been added to Logstash chart in #695.

The headless Service is required for Statefulsets. Helm 2 allowed deploying a Statefulset without a serviceName, however Helm 3 enforces this requirement and fails if serviceName is missing.

Statefulset does not accept the serviceName field update during release upgrades. Upgrading the Logstash chart from a previous version will require using helm upgrade --force.

6.8.11 - 2020/07/28

See 7.8.1 Breaking changes

7.8.0 - 2020/06/18

Stable Elasticsearch deprecated

Stable Elasticsearch chart is now deprecated in favor of Elastic Elasticsearch chart (see Stable Elasticsearch chart notice).

Existing users of Stable Elasticsearch chart can use the migration guide.

APM Server memory limit

APM Servers default memory limit is increased in #664.

This change may impact memory available resources capacity in your Kubernetes cluster.

To come back to former default values, use the following values:

resources:
  limits:
    memory: "200Mi"

Elasticsearch service selector change

Elasticsearch service selector is no more including heritage label.

This label is immutable and causes issues with the latest Helm v3 version which does more verification (heritage has Tiller value with Helm 2 but Helm value in Helm 3).

As this change is forcing Service recreation, a short disruption of a few seconds can be noted during upgrade to 7.8.0.

See #437 for more details.

7.7.0 - 2020/05/13

Known Issues

Elasticsearch nodes could be restarted too quickly during an upgrade or rolling restart, potentially resulting in service disruption. This is due to a bug introduced by the changes to the Elasticsearch readinessProbe in #586.

GA support

Elasticsearch, Kibana, Filebeat and Metricbeat are moving from beta to GA and are supported by Elastic following these limitations:

  • only released charts coming from Elastic Helm repo or GitHub releases are supported.
  • released charts are only supported when using the same chart version and application version (ie: using 7.7.0 chart with 6.8.8 or 7.6.2 application is not supported).

New branching model

Elastic Helm charts repository is now following a new branching model:

  • master branch is now a development branch for next major release.
  • new 7.x branch is a development branch for next minor release using SNAPSHOT Docker images.
  • new 7.7 branch is a development branch for next patch release using SNAPSHOT Docker images

Filebeat container inputs

Filebeat chart default config is now using container input instead of docker input in #568.

Metricbeat upgrade issue

Metricbeat upgrade are failing with spec.selector: Invalid value: ... field is immutable error. This is related to Metricbeat deployment selector including chart version which is not immutable. You should use helm upgrade --force to upgrade Metricbeat. See #621 for more details.

Metricbeat split values for daemonset and deployment

Metricbeat is now using dedicated values for daemonset and deployment config. The old values are still working but are now deprecated. See #572 for more details.

Warning: When upgrading Metricbeat while using custom metricbeatConfig value for kube-state-metrics-metricbeat.yml, Metricbeat deployment fails with missing field accessing 'metricbeat.modules.0.hosts.0' (source:'metricbeat.yml').

In this case metricbeatConfig.kube-state-metrics-metricbeat.yml value should be migrated to deployment.metricbeatConfig.metricbeat.yml. See #623 for more details.

6.8.9 - 2020/05/13

See 7.7.0 Breaking changes

7.6.2 - 2020/03/31

Kibana default resources

Kibana default resources (cpu/memory requests and limits) are increased in #540.

This change may impact cpu/memory available resources capacity in your Kubernetes cluster.

To come back to former default values, use the following values:

extraEnvs:
- name: "NODE_OPTIONS"
  value: ""
resources:
  requests:
    cpu: "100m"
    memory: "500Mi"
  limits:
    cpu: "1000m"
    memory: "1Gi"

7.6.0 - 2020/02/11

Elasticsearch default resources

Elasticsearch default cpu requests is increased in #458 following our recommendation that resources requests and limits should have the same values.

This change may impact available cpu capacity in your Kubernetes cluster.

To come back to former default values, use the following values:

resources:
  requests:
    cpu: "100m"

7.5.0 - 2019/12/02

Metricbeat kube-state-metrics upgrade

kube-state-metrics chart dependency is upgraded from 1.6.0 to 2.4.1 in #352. This is causing Metricbeat chart upgrade from versions < 7.5.0 failing with the following error:

UPGRADE FAILED
Error: Deployment.apps "metricbeat-kube-state-metrics" is invalid: spec.selector: Invalid value: v1.LabelSelector{MatchLabels:map[string]string{"app.kubernetes.io/name":"kube-state-metrics"}, MatchExpressions:[]v1.LabelSelectorRequirement(nil)}: field is immutable && Deployment.apps "metricbeat-metricbeat-metrics" is invalid: spec.selector: Invalid value: v1.LabelSelector{MatchLabels:map[string]string{"app":"metricbeat-metricbeat-metrics", "chart":"metricbeat-7.5.0", "heritage":"Tiller", "release":"metricbeat"}, MatchExpressions:[]v1.LabelSelectorRequirement(nil)}: field is immutable
Error: UPGRADE FAILED: Deployment.apps "metricbeat-kube-state-metrics" is invalid: spec.selector: Invalid value: v1.LabelSelector{MatchLabels:map[string]string{"app.kubernetes.io/name":"kube-state-metrics"}, MatchExpressions:[]v1.LabelSelectorRequirement(nil)}: field is immutable && Deployment.apps "metricbeat-metricbeat-metrics" is invalid: spec.selector: Invalid value: v1.LabelSelector{MatchLabels:map[string]string{"app":"metricbeat-metricbeat-metrics", "chart":"metricbeat-7.5.0", "heritage":"Tiller", "release":"metricbeat"}, MatchExpressions:[]v1.LabelSelectorRequirement(nil)}: field is immutable

The workaround is to use --force argument for helm upgrade command which will force Metricbeat resources update through delete/recreate.

7.0.0-alpha1 - 2019/04/17

Elasticsearch upgrade from 6.x

If you were using the default Elasticsearch version from the previous release (6.6.2-alpha1) you will first need to upgrade to Elasticsearch 6.7.1 before being able to upgrade to 7.0.0. You can do this by adding this to your values file:

esMajorVersion: 6
imageTag: 6.7.1

If you are upgrading an existing cluster that did not override the default storageClassName you will now need to specify the storageClassName. This only affects existing clusters and was changed in #94. The advantage of this is that now the Helm chart will just use the default storageClassName rather than needing to override it for any providers where it is not called standard.

volumeClaimTemplate:
  storageClassName: "standard"