Built-in Objects

    • Release: This object describes the release itself. It has several objects inside of it:
      • Release.Name: The release name
      • Release.Namespace: The namespace to be released into (if the manifest doesn’t override)
      • Release.IsUpgrade: This is set to true if the current operation is an upgrade or rollback.
      • Release.IsInstall: This is set to true if the current operation is an install.
      • Release.Revision: The revision number for this release. On install, this is 1, and it is incremented with each upgrade and rollback.
      • Release.Service: The service that is rendering the present template. On Helm, this is always Helm.
    • : Values passed into the template from the values.yaml file and from user-supplied files. By default, Values is empty.
    • Chart: The contents of the Chart.yaml file. Any data in Chart.yaml will be accessible here. For example {{ .Chart.Name }}-{{ .Chart.Version }} will print out the mychart-0.1.0.
    • Files: This provides access to all non-special files in a chart. While you cannot use it to access templates, you can use it to access other files in the chart. See the section Accessing Files for more.
      • Files.Get is a function for getting a file by name (.Files.Get config.ini)
      • Files.GetBytes is a function for getting the contents of a file as an array of bytes instead of as a string. This is useful for things like images.
      • Files.Glob is a function that returns a list of files whose names match the given shell glob pattern.
      • Files.Lines is a function that reads a file line-by-line. This is useful for iterating over each line in a file.
      • Files.AsSecrets is a function that returns the file bodies as Base 64 encoded strings.
      • Files.AsConfig is a function that returns file bodies as a YAML map.
    • Capabilities: This provides information about what capabilities the Kubernetes cluster supports.
      • Capabilities.APIVersions is a set of versions.
      • Capabilities.KubeVersion and Capabilities.KubeVersion.Version is the Kubernetes version.
      • Capabilities.KubeVersion.Major is the Kubernetes major version.
      • Capabilities.KubeVersion.Minor is the Kubernetes minor version.
      • Capabilities.HelmVersion is the object containing the Helm Version details, it is the same output of helm version
      • Capabilities.HelmVersion.Version is the current Helm version in semver format.
      • Capabilities.HelmVersion.GitCommit is the Helm git sha1.
      • Capabilities.HelmVersion.GitTreeState is the state of the Helm git tree.
      • Capabilities.HelmVersion.GoVersion is the version of the Go compiler used.
    • Template: Contains information about the current template that is being executed
      • Template.BasePath: The namespaced path to the templates directory of the current chart (e.g. mychart/templates).