Tour of infra-related repos for Kubernetes

k8s.md

k/k: source code for kubernetes, unit + integration/e2e test

• test/e2e: framework for testing
• hack: checks dependencies, etc.

k/test-infra: configuration of prow jobs + prow itself + spyglass + any other test/CI tools

• config/jobs: the configuration of prow jobs for anything on prow.k8s.io
  • all the stuff on release board (for testgrid) is periodic except for a few postsubmit (? may need to confirm this) - images/kubekins/e2e: all the stuff you need to run k8s jobs
    • prow autobump PR is merged every weekday by Googler [historical reasons]
    • changes in kubetest or bootstrap.py require an image bump - images/krte: allows kind jobs to run - prow: the CI/CD system
    • Life of a Prow Job for how all the components work together
    • components: easy, short explanation for what each component does with links to their respective folders
• releng: contains config-forker, config-rotator (for eventually creating 1.20 dashboards)

k/k8s.io: anything with GCP

• e.g. failed to schedule to a node: infra problem, means not enough mem/CPU
  • last release cycle they added resource limits to every job which helped with that

k/release: stuff more related to release engineering - what do we need to actually create a release?

• krel: Go CLI to replace bash scripts, e.g. push-build
• anago: produces the actual releases
• version markers: files that say which version of k8s is the latest for that channel, e.g. stable.txt should have v1.19.2