[meta] add helm 3 beta support (#759)

This PR add Helm 3 support in preview as the main blockers were fixed in previous PR.

Note that adding automated tests with Helm 3 is still required to add full Helm 3 support.

README.md

@@ -11,6 +11,7 @@
   - [Support Matrix](#support-matrix)
   - [Kubernetes Versions](#kubernetes-versions)
   - [Helm versions](#helm-versions)
+    - [Helm 3 beta](#helm-3-beta)
 - [ECK](#eck)
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
@@ -76,7 +77,12 @@ exact versions are defined under `KUBERNETES_VERSIONS` in
 
 While we are checking backward compatibility, the charts are only tested with
 Helm version mentioned in [helm-tester Dockerfile][] (currently 2.16.9).
-Note that we don't support [Helm 3][] version.
+
+#### Helm 3 beta
+
+While we don't have automated tests for [Helm 3][] yet, we fixed the main
+blockers to use it. We now have enough feedbacks from internal and external
+users to add support in beta.
 
 ## ECK
 

apm-server/README.md

@@ -50,14 +50,18 @@ This chart is tested with the latest 7.10.0-SNAPSHOT versions.
 * Add the Elastic Helm charts repo:
 `helm repo add elastic https://helm.elastic.co`
 
-* Install the latest 7.7 release:
-`helm install --name apm-server elastic/apm-server`
+* Install it:
+  - with Helm 2: `helm install --name apm-server elastic/apm-server`
+  - with [Helm 3 (beta)][]: `helm install apm-server elastic/apm-server`
+
 
 ### Install development version using 7.x branch and 7.10.0-SNAPSHOT versions
 
 * Clone the git repo: `git clone git@github.com:elastic/helm-charts.git`
 
-* Install it: `helm install --name apm-server ./helm-charts/apm-server`
+* Install it:
+  - with Helm 2: `helm install --name apm-server ./helm-charts/apm-server --set imageTag=7.10.0-SNAPSHOT`
+  - with [Helm 3 (beta)][]: `helm install apm-server ./helm-charts/apm-server --set imageTag=7.10.0-SNAPSHOT`
 
 
 ## Upgrading
@@ -159,6 +163,7 @@ about our development and testing process.
 [examples/oss]: https://github.com/elastic/helm-charts/tree/7.x/apm-server/examples/oss
 [examples/security]: https://github.com/elastic/helm-charts/tree/7.x/apm-server/examples/security
 [helm]: https://helm.sh
+[helm 3 (beta)]: https://github.com/elastic/helm-charts/tree/master/README.md#helm-3-beta
 [horizontal pod autoscaler]: https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/
 [imagePullPolicy]: https://kubernetes.io/docs/concepts/containers/images/#updating-images
 [imagePullSecrets]: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/#create-a-pod-that-uses-your-secret

elasticsearch/README.md

@@ -60,14 +60,18 @@ This chart is tested with the latest 7.10.0-SNAPSHOT versions.
 * Add the Elastic Helm charts repo:
 `helm repo add elastic https://helm.elastic.co`
 
-* Install the latest 7.7 release:
-`helm install --name elasticsearch elastic/elasticsearch`
+* Install it:
+  - with Helm 2: `helm install --name elasticsearch elastic/elasticsearch`
+  - with [Helm 3 (beta)][]: `helm install elasticsearch elastic/elasticsearch`
+
 
 ### Install development version using 7.x branch and 7.10.0-SNAPSHOT versions
 
 * Clone the git repo: `git clone git@github.com:elastic/helm-charts.git`
 
-* Install it: `helm install --name elasticsearch ./helm-charts/elasticsearch`
+* Install it:
+  - with Helm 2: `helm install --name elasticsearch ./helm-charts/elasticsearch --set imageTag=7.10.0-SNAPSHOT`
+  - with [Helm 3 (beta)][]: `helm install elasticsearch ./helm-charts/elasticsearch --set imageTag=7.10.0-SNAPSHOT`
 
 
 ## Upgrading
@@ -410,6 +414,7 @@ about our development and testing process.
 [examples/security]: https://github.com/elastic/helm-charts/tree/7.x/elasticsearch/examples/security
 [gke]: https://cloud.google.com/kubernetes-engine
 [helm]: https://helm.sh
+[helm 3 (beta)]: https://github.com/elastic/helm-charts/tree/master/README.md#helm-3-beta
 [helm/charts stable]: https://github.com/helm/charts/tree/master/stable/elasticsearch/
 [how to install plugins guide]: https://github.com/elastic/helm-charts/tree/7.x/elasticsearch/README.md#how-to-install-plugins
 [how to use the keystore]: https://github.com/elastic/helm-charts/tree/7.x/elasticsearch/README.md#how-to-use-the-keystore

filebeat/README.md

@@ -47,14 +47,18 @@ This chart is tested with the latest 7.10.0-SNAPSHOT versions.
 * Add the Elastic Helm charts repo:
 `helm repo add elastic https://helm.elastic.co`
 
-* Install the latest 7.7 release:
-`helm install --name filebeat elastic/filebeat`
+* Install it:
+  - with Helm 2: `helm install --name filebeat elastic/filebeat`
+  - with [Helm 3 (beta)][]: `helm install filebeat elastic/filebeat`
+
 
 ### Install development version using 7.x branch and 7.10.0-SNAPSHOT versions
 
 * Clone the git repo: `git clone git@github.com:elastic/helm-charts.git`
 
-* Install it: `helm install --name filebeat ./helm-charts/filebeat`
+* Install it:
+  - with Helm 2: `helm install --name filebeat ./helm-charts/filebeat --set imageTag=7.10.0-SNAPSHOT`
+  - with [Helm 3 (beta)][]: `helm install filebeat ./helm-charts/filebeat --set imageTag=7.10.0-SNAPSHOT`
 
 
 ## Upgrading
@@ -198,6 +202,7 @@ about our development and testing process.
 [filebeat oss docker image]: https://www.docker.elastic.co/r/beats/filebeat-oss
 [filebeat outputs]: https://www.elastic.co/guide/en/beats/filebeat/7.x/configuring-output.html
 [helm]: https://helm.sh
+[helm 3 (beta)]: https://github.com/elastic/helm-charts/tree/master/README.md#helm-3-beta
 [hostNetwork]: https://kubernetes.io/docs/concepts/policy/pod-security-policy/#host-namespaces
 [hostPath]: https://kubernetes.io/docs/concepts/storage/volumes/#hostpath
 [imagePullPolicy]: https://kubernetes.io/docs/concepts/containers/images/#updating-images

kibana/README.md

@@ -48,14 +48,18 @@ This chart is tested with the latest 7.10.0-SNAPSHOT versions.
 * Add the Elastic Helm charts repo:
 `helm repo add elastic https://helm.elastic.co`
 
-* Install the latest 7.7 release:
-`helm install --name kibana elastic/kibana`
+* Install it:
+  - with Helm 2: `helm install --name kibana elastic/kibana`
+  - with [Helm 3 (beta)][]: `helm install kibana elastic/kibana`
+
 
 ### Install development version using 7.x branch and 7.10.0-SNAPSHOT versions
 
 * Clone the git repo: `git clone git@github.com:elastic/helm-charts.git`
 
-* Install it: `helm install --name kibana ./helm-charts/kibana`
+* Install it:
+  - with Helm 2: `helm install --name kibana ./helm-charts/kibana --set imageTag=7.10.0-SNAPSHOT`
+  - with [Helm 3 (beta)][]: `helm install kibana ./helm-charts/kibana --set imageTag=7.10.0-SNAPSHOT`
 
 
 ## Upgrading
@@ -214,6 +218,7 @@ about our development and testing process.
 [examples/security]: https://github.com/elastic/helm-charts/tree/7.x/kibana/examples/security
 [gke]: https://cloud.google.com/kubernetes-engine
 [helm]: https://helm.sh
+[helm 3 (beta)]: https://github.com/elastic/helm-charts/tree/master/README.md#helm-3-beta
 [imagePullPolicy]: https://kubernetes.io/docs/concepts/containers/images/#updating-images
 [imagePullSecrets]: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/#create-a-pod-that-uses-your-secret
 [ingress]: https://kubernetes.io/docs/concepts/services-networking/ingress/

logstash/README.md

@@ -50,14 +50,18 @@ This chart is tested with the latest 7.10.0-SNAPSHOT versions.
 * Add the Elastic Helm charts repo:
 `helm repo add elastic https://helm.elastic.co`
 
-* Install the latest 7.7 release:
-`helm install --name logstash elastic/logstash`
+* Install it:
+  - with Helm 2: `helm install --name logstash elastic/logstash`
+  - with [Helm 3 (beta)][]: `helm install logstash elastic/logstash`
+
 
 ### Install development version using 7.x branch and 7.10.0-SNAPSHOT versions
 
 * Clone the git repo: `git clone git@github.com:elastic/helm-charts.git`
 
-* Install it: `helm install --name logstash ./helm-charts/logstash`
+* Install it:
+  - with Helm 2: `helm install --name logstash ./helm-charts/logstash --set imageTag=7.10.0-SNAPSHOT`
+  - with [Helm 3 (beta)][]: `helm install logstash ./helm-charts/logstash --set imageTag=7.10.0-SNAPSHOT`
 
 
 ## Upgrading
@@ -199,6 +203,7 @@ about our development and testing process.
 [examples]: https://github.com/elastic/helm-charts/tree/7.x/logstash/examples
 [examples/oss]: https://github.com/elastic/helm-charts/tree/7.x/logstash/examples/oss
 [helm]: https://helm.sh
+[helm 3 (beta)]: https://github.com/elastic/helm-charts/tree/master/README.md#helm-3-beta
 [imagePullPolicy]: https://kubernetes.io/docs/concepts/containers/images/#updating-images
 [imagePullSecrets]: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/#create-a-pod-that-uses-your-secret
 [kubernetes secrets]: https://kubernetes.io/docs/concepts/configuration/secret/

metricbeat/README.md

@@ -47,14 +47,18 @@ This chart is tested with the latest 7.10.0-SNAPSHOT versions.
 * Add the Elastic Helm charts repo:
 `helm repo add elastic https://helm.elastic.co`
 
-* Install the latest 7.7 release:
-`helm install --name metricbeat elastic/metricbeat`
+* Install it:
+  - with Helm 2: `helm install --name metricbeat elastic/metricbeat`
+  - with [Helm 3 (beta)][]: `helm install metricbeat elastic/metricbeat`
+
 
 ### Install development version using 7.x branch and 7.10.0-SNAPSHOT versions
 
 * Clone the git repo: `git clone git@github.com:elastic/helm-charts.git`
 
-* Install it: `helm install --name metricbeat ./helm-charts/metricbeat`
+* Install it:
+  - with Helm 2: `helm install --name metricbeat ./helm-charts/metricbeat --set imageTag=7.10.0-SNAPSHOT`
+  - with [Helm 3 (beta)][]: `helm install metricbeat ./helm-charts/metricbeat --set imageTag=7.10.0-SNAPSHOT`
 
 
 ## Upgrading
@@ -219,6 +223,7 @@ about our development and testing process.
 [examples/oss]: https://github.com/elastic/helm-charts/tree/7.x/metricbeat/examples/oss
 [examples/security]: https://github.com/elastic/helm-charts/tree/7.x/metricbeat/examples/security
 [helm]: https://helm.sh
+[helm 3 (beta)]: https://github.com/elastic/helm-charts/tree/master/README.md#helm-3-beta
 [hostPath]: https://kubernetes.io/docs/concepts/storage/volumes/#hostpath
 [hostNetwork]: https://kubernetes.io/docs/concepts/policy/pod-security-policy/#host-namespaces
 [imagePullPolicy]: https://kubernetes.io/docs/concepts/containers/images/#updating-images