Tools

See below various products and services related to cluster deployments and optimizations.

Renovate

This repository uses Renovate  to automate release pull requests and keep dependencies up-to-date.

Configuration

Follow the Renovate onboarding instructions  and once the k3s-cluster forked repository is configured, review the renovate.json5  configuration file for the current Renovate implementation.

See a PR example  with a new release version generated by Renovate.

Robusta KRR

This repository follows the Kubernetes resource optimization common practices — see the Robusta blog entry  for more details. Use krr to optimize the cluster resources allocation.

Configuration

Install the application  on your computer:

brew tap robusta-dev/homebrew-krr
brew install krr

Example of running a simple strategy, using the Prometheus endpoint:

krr simple -p https://metrics.domain.com/prometheus -n kube-system --allow-hpa

Adjust the resources accordingly — example of resources configuration present in the external-dns main.yaml  defaults file, where resources.limits.cpu is set to null:

resources:
  limits:
    cpu: null
    memory: 128Mi
  requests:
    cpu: 10m
    memory: 128Mi