Helm Commands Cheatsheet

Hi everyone😎, Sharing helm commands that I use day to day.

helm create:
This command creates a chart directory along with the common files and directories used in a chart.
  1. Create a new chart with the given name:- helm create [CHART]

helm install: 
This command installs a chart in a cluster.
  1. Install particular service using helm:- 
    • helm install [RELEASE_NAME] [CHART]
  2. Install chart in particular namespace:-
    • helm install [RELEASE_NAME] [CHART] --namespace [NAMESPACE]
  3. Override the default values with those specified in a file of your choice:-
    • helm install [RELEASE_NAME] [CHART] --namespace [NAMESPACE] --values [yaml-file/url]
  4. Dry run helm chart:-  helm install [RELEASE_NAME] [CHART] --dry-run
  5. Install in verbose mode:- helm install [RELEASE_NAME] [CHART] --debug
  6. Set values on the command:- helm install [RELEASE_NAME] [CHART] --set [KEY]=[VALUE]
helm lint:
This command takes a path to a chart and runs a series of tests to verify that the chart is well-formed.
  1. Examine a chart for possible issues:- helm lint [CHART]
helm list:
This command lists all of the releases for a specified namespace
  1. List releases:- helm list [FLAG]  or helm ls [FLAG] 

helm uninstall:
This command takes a release name and uninstalls the release.
  1. Uninstall deployed release:- helm uninstall [RELEASE_NAME]
  2. Uninstall deployed release in specific namespace:- helm uninstall [RELEASE_NAME] --namespace [NAMESPACE]

helm upgrade:
This command upgrades a release to a new version of a chart.
  1. Upgrade a release:- helm upgrade [RELEASE_NAME] [CHART]
  2. Upgrade a release by overriding the values with those specified in the file:- helm upgrade [RELEASE_NAME] [CHART]
  3. Upgrade a release. If it does not exist on the system, install it:- helm upgrade [RELEASE_NAME] [CHART] --install
  4. Upgrade to a specified version:- helm upgrade [RELEASE_NAME] [CHART] --version [VERSION-NUMBER]

helm repo:
This command is used to add, remove, list, and index chart repositories.
  1. Add a chart repository:- helm repo add [URL]
  2. Update information of available charts locally from chart repositories:- helm repo update
  3. List chart repositories:- helm repo list

helm rollback:
This command rolls back a release to a previous revision.
  1. Roll back a release to a previous revision:- helm rollback [RELEASE_NAME] [REVISION]

helm search:
Search provides the ability to search for Helm charts in the various places they can be stored including the Artifact Hub and repositories we have added.
  1. Search for charts in the Artifact Hub or your own hub instance:- helm search hub [KEYWORD] [flags]
  2. Search repositories for a keyword in charts:- helm search repo [KEYWORD] 
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