Docker image to detect outdated Helm charts

This docker image uses https://github.com/fabmation-gmbh/helm-whatup to check whether there are outdated Helm charts installed in your cluster. Helm 3 only.

• It is installed as a Kubernetes cron job
  • needs a service account with sufficient privileges (read-only permissions)
• Supports two usage modes: either
  • the job fails if a chart is outdated (which integrates into your existing monitoring), or
  • it mails you a list of outdated charts (if recipient and SMTP configured)
• Supports to send mails only on changes (if /data is a persistent volume)

Repository address

GitHub: aspettl/docker-helm-outdated

Docker image

DockerHub image (built using GitHub action): aspettl/docker-helm-outdated

How to install / example

See the example resource definitions in the deploy folder. This example includes

• a cron job that executes once a night
• a service account with (cluster-wide) read-only permissions, needed to detect all Helm charts
• a config map with a custom add_repos.sh script to add the Helm repositories
• a secret with SMTP credentials for sending mails
• a persistent volume claim, needed to send emails only on changes

Use kubectl create job --namespace=helm-outdated --from=cronjob/helm-outdated helm-outdated-test to schedule a job immediately.

License

MIT license, see LICENSE