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Install-and-Delete.md

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Install a default chart with helm 3 and helm 2

We will use the default chart here

helm create devopseasylearning-chart-for-testing
helm install [release name] ./[chart folder name]/ -n [namespace]
helm install demo ./devopseasylearning-chart-for-testing/ -n default
helm uninstall demo -n default

Install and delete a release with a default chart

1- Test before installing

# Helm 2
helm install --dry-run --debug ./mychart/ --name jenkins-test --namespace cicd

helm install --dry-run --debug ./mychart/ --name jenkins-test --namespace cicd --set fullnameOverride=jenkins-test

helm install --dry-run --debug ./mychart/ --name jenkins-test --namespace cicd --set fullnameOverride=jenkins-test -f values.yaml

#helm 3
helm install --dry-run --debug ./mychart/ --generate-name --namespace cicd

helm install jenkins-test --dry-run --debug ./mychart/ --namespace cicd 

helm install jenkins-test --dry-run --debug ./mychart/ --namespace cicd --set fullnameOverride=jenkins-test

helm install --dry-run --debug ./mychart/ --name jenkins-test --namespace cicd --set fullnameOverride=jenkins-test -f values.yaml

2- Install the release

The pod will have the chart name here

POD: jenkins-test-mychart-5c4d795dd4-r4j95

# Helm2
helm install ./mychart/ --name jenkins-test 
helm install ./mychart/ --name jenkins-test --namespace cicd

# Helm3
helm install jenkins-test ./mychart/ 
helm install jenkins-test ./mychart/ --namespace cicd

The pod will not have the chart name here because we overwrite it

POD: jenkins-test-7cd597bfb8-ck9vz

# Helm2
helm install ./mychart/ --name jenkins-test --set fullnameOverride=jenkins-test

helm install ./mychart/ --name jenkins-test --set fullnameOverride=jenkins-test --namespace cicd

# Helm3
helm install jenkins-test ./mychart/ --set fullnameOverride=jenkins-test

helm install jenkins-test ./mychart/ --set fullnameOverride=jenkins-test --namespace cicd

2- Delete the release with Helm 3

If we delete a release with helm uninstall jenkins-test without --purge, will not be able to install the it with the same release name. It is a good idea to use helm uninstall jenkins-test --purge do delete a release with the release name in the cluster

helm uninstall jenkins-test 
helm del --purge jenkins-test
helm delete jenkins-test --purge
helm uninstall jenkins-test --purge

3- Delete the release with Helm 2

If we delete a release with helm delete jenkins-test without --purge, will not be able to install the it with the same release name. It is a good idea to use helm delete jenkins-test --purge do delete a release with the release name in the cluster

helm delete jenkins-test
helm del --purge jenkins-test
helm delete jenkins-test --purge
helm delete jenkins-test --purge