Only update the helm repository used in the current task

[Borrelhapje]

SUMMARY

When kubernetes.core.helm is given the update_repo_cache: true option, the plugin runs helm repo update. This can be quite inefficient if a lot of repositories are defined.

Since the plugin has a reference to the repository in chart_ref, could it be possible to instead run helm repo update <repository>?

ISSUE TYPE

• Feature Idea

COMPONENT NAME

kubernetes.core.helm

ADDITIONAL INFORMATION

I recently ran into an issue where helm installs using this plugin became extremely slow. After some debugging it turned out I had an old repository link which was not accessible from the current host. In this case its an easy fix on my side, but this change also benefits the execution speed of playbooks if a lot of repositories are defined.

    - name: postgresql database
      kubernetes.core.helm:
        name: pg-grafana
        namespace: "{{ k8s.namespace }}"
        chart_ref: bitnami/postgresql
        update_repo_cache: true