Helm Chart Install: Advanced Usage of the “Set” Argument

Helm Chart Install: Advanced Usage of the “Set” Argument

When installing Helm charts with the helm install command, the --set argument allows you to define values used in a chart’s templates. The --set argument is an alternative to defining the value in a values.yaml file. A simple usage of --set looks like this: $ helm install codecentric/keycloak --set keycloak.replicas=2

When installing Helm charts with the helm install command, the --set argument allows you to define values used in a chart’s templates.

The --set argument is an alternative to defining the value in a values.yaml file.

A simple usage of --set looks like this:

$ helm install codecentric/keycloak --set keycloak.replicas=2

Conversely, to set the same value with a values.yaml file, you would add the value to the file and then use the -f argument to specify the path to the file.

## values.yaml
keycloak:
  replicas: 2

Challenges of Using --set

There are some special cases where it’s difficult to specify a YAML property/value on the command line.

These special cases involve properties and values containing characters that conflict with YAML syntax or undocumented behaviors.

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