Helm install
External
- https://helm.sh/docs/helm/#helm-install
- https://helm.sh/docs/using_helm/#helm-install-installing-a-package
- https://helm.sh/docs/using_helm/#helpful-options-for-install-upgrade-rollback
Internal
Overview
Install a chart archive, creating a release in the process.
The chart may come from a repository:
helm install <chart-name> helm install stable/mysql
or from a local directory (note that the directory name must be identical with the chart name specified in Chart.yaml):
helm install <directory-name-that-must-match-chart-name>
Dry Run
In this mode, we send the templates to the Tiller server, which renders them, but instead of installing the chart, it returns the rendered template so it can be inspected:
helm install <...> --debug --dry-run
Note that in this mode, it is not guaranteed that Kubernetes will accept the generated manifest.
Specifying a Release Name
helm install --name <release-name> ...
Overriding Default Configuration
Default configuration - or just some values - can be overridden in bulk with:
helm install -f|--values <configuration-overrides-file.yaml> <chart name>
The -f|--values flag can be specified multiple time on the command line, and the rightmost value will take precedence.
Individual configuration options can be specified with --set, --set-string and --set-file. If both --set and --values are used, the --set-specified configuration values are merged into the configuration values specified with --values, with higher precedence. Overrides specified with --set are persisted in a ConfigMap and can be viewed for a given release with helm get value <release-name>:
helm install --set size=10 ...
For more details on relative precedence of different sources of configuration data, see:
TODO: https://helm.sh/docs/using_helm/#the-format-and-limitations-of-set
Overriding Tags and Conditions
Use --set to override default tag and condition values at installation time.
Installing from Different Sources
The default option for the helm install command is to install from the default repository. However, the chart may come from different sources:
Installing from a File
helm install something-0.1.1.tgz
Installing from an Unpacked Chart Directory
helm install ./something
Installing from a URL
helm install https://example.com/charts/something-1.0.0.tgz