Helm

The Botkube Helm executor plugin allows you to run the helm command directly in the chat window of each communication platform.

The Helm plugin is hosted by the official Botkube plugin repository. To enable the Helm plugin, make sure that the botkube repository is defined under plugins in the values.yaml file.

plugins:
  repositories:
    botkube:
      url: https://github.com/kubeshop/botkube/releases/download/v1.4.0/plugins-index.yaml

Enabling plugin

To enable Helm plugin, add --set 'executors.k8s-default-tools.botkube/helm.enabled=true' to a given Botkube install command. By default, just the read-only Helm commands are supported.

For enabling commands that require create, update or delete rules, you need to create specific (Cluster)Role and (Cluster)RoleBinding and reference it from plugin's context configuration. To learn more refer to the RBAC section.

Syntax

# Map of executors. The `executors` property name is an alias for a given configuration.
# Key name is used as a binding reference.
#
# Format: executors.{alias}
executors:
  "k8s-tools":
    botkube/helm: # Plugin name syntax: <repo>/<plugin>[@<version>]. If version is not provided, the latest version from repository is used.
      enabled: true # If not enabled, plugin is not downloaded and started.
      config: # Plugin's specific configuration.
        helmDriver: "secret" # Allowed values are configmap, secret, memory.
        helmCacheDir: "/tmp/helm/.cache"
        helmConfigDir: "/tmp/helm/"
      context:
        # RBAC configuration for this plugin.
        rbac:
          group:
            # Static impersonation for given group.
            type: Static
            static:
              # Name of group.rbac.authorization.k8s.io the plugin role will be bound to.
              values: [botkube-plugins-default]

The default configuration for Helm chart can be found in the values.yaml file.

Merging strategy

For all collected helm executors bindings, configuration properties are overridden based on the order of the binding list. The priority is given to the last binding specified on the list. Empty properties are omitted.

Example

Consider such configuration:

communications:
  "default-group":
    slack:
      channels:
        "default":
          name: "random"
          bindings:
            executors:
              - helm-one
              - helm-two
              - helm-three

executors:
  "helm-one":
    botkube/helm:
      enabled: true
      config:
        helmDriver: "secret"
        helmCacheDir: "/tmp/helm/.cache"
        helmConfigDir: "/tmp/helm/"
  "helm-two":
    botkube/helm:
      enabled: true
      config:
        helmDriver: "configmap"
  "helm-three":
    botkube/helm:
      enabled: false
      config:
        helmDriver: "secret"
        helmCacheDir: "/example/helm/.cache"
        helmConfigDir: "/example/helm/"

We can see that:

• The helmDriver is set to configmap as it's overridden by the helm-two binding - the last one which is both enabled and sets the helmDriver property.
• The helmConfigDir and helmCacheDir are set to values specified by the helm-one configuration as the helm-two don't specify them.
• The helm-tree binding is disabled (botkube/helm.enabled is set to false), so it's not taken into account.