Zuul CI for Kubernetes on the Workday Private Cloud
summary
Workday runs Zuul CI to build and test Kubernetes on a five‑generation OpenStack private cloud with 132 clusters, 6 million VOR, 22 Paby RAM, 99k VMs and 247k VMs recreated weekly; the pipeline bootstraps clusters via Cluster API using VM roles named laptop and targetable, runs Ansible/packer with instrumented ARA logs, exercises Helm charts, networking, security tooling and 1.29→1.30 upgrades, and includes generator cleanup jobs for orphaned Octavia/network resources; full create+upgrade+verify iteration takes about 1 hour and runs three upgrade passes.
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chapters (11)
- 0:00Introduction and agenda
- 1:04Workday Private Cloud overview
- 2:54Kubernetes challenges in air-gapped environments
- 3:58Zuul CI pipeline for Kubernetes
- 7:06Cluster testing and validation
- 9:13Handling Zuul limitations in air-gapped setups
- 11:22Instrumenting Ansible logs with ARA
- 13:09Promotion and Git workflow
- 14:56Post-job cleanup and resource management
- 16:44Reducing drift with one-off jobs
- 18:31Future improvements and Q&A
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