JKube + Helm

OpenShift

Prepare environment

Initialize a ChartMuseum instance. This is required for the outer-loop.

jbang ./demo/PrepareOpenShiftEnvironment.java

Outer Loop

No Maven profile.

First part runs on CI server.

mvn clean package k8s:build k8s:push k8s:resource k8s:helm k8s:helm-push

Image pushed to https://hub.docker.com/r/marcnuri/repo-for-tests

Helm chart pushed to

• http://chart-museum.dev-sandbox.marcnuri.com/
• http://chart-museum.dev-sandbox.marcnuri.com/api/charts

Second part executed by operator?

helm repo add dev-sandbox http://chart-museum.dev-sandbox.marcnuri.com/ --username secret --password shouldnt-be-here-use-env
helm repo update dev-sandbox
helm install jkube-helm dev-sandbox/jkube-helm --devel
helm delete jkube-helm
helm install jkube-helm dev-sandbox/jkube-helm --devel   \
  --set ingress.host=production.dev-sandbox.marcnuri.com \
  --set application.greeting="Prod Override"
helm delete jkube-helm

Inner Loop

Use the dev and OpenShift Maven profiles.

Provides default values for placeholders applicable in the dev environment for OpenShift.

mvn -Pdev,openshift clean package oc:build oc:resource oc:apply
mvn -Pdev,openshift oc:undeploy

Minikube (needs updating)

TODO: Update this section

Inner Loop

dev Maven profile.

Provides default values for placeholders applicable in the dev environment.

We assume we are running on a Minikube cluster.

$ eval $(minikube docker-env)
$ mvn -Pdev clean package k8s:build k8s:resource k8s:apply -Dingress.host=local-dev.$(minikube ip).nip.io
$ mvn -Pdev k8s:undeploy

Outer Loop

No Maven profile.

Values for placeholders are provided from the helm-variables-template.yml file.

First part runs on CI server.

$ mvn clean package k8s:build k8s:push k8s:resource k8s:helm k8s:helm-push

Second part executed by operator?

$ helm install ...

Demo

We assume we are running on a Minikube cluster for demo purposes.

$ eval $(minikube docker-env)
$ mvn clean package k8s:build k8s:resource k8s:helm
$ helm install jkube-helm ./target/jkube-helm-0.0.1-SNAPSHOT-helm.tar.gz         \
    --set ingress.host=production.$(minikube ip).nip.io                          \
    --set deployment.container.imagepullpolicy=IfNotPresent
$ helm delete jkube-helm

Plugins

Maven Resources Plugin

Used to interpolate Maven properties in application.properties file.

Since it's using the Spring Boot parent, filtered properties are delimited by @...@.