Lessons from Implementing Pull Request Generated Preview Ap...
summary
MasterClass implements preview apps with Argo CD ApplicationSet and the pull request generator to spawn per-PR namespaces and names suffixed with PR numbers, using kustomize multibase and replacements to inject PR context into ingresses, env vars and namespaces. DNS uses external-dns for stable preview URLs. Crossplane provisions some cloud resources but causes slow provisioning; External Secrets syncs a template which is copied into each preview namespace by a job. The system serves 1.8M requests and over half of generated previews are actively used.
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chapters (13)
- 0:00Introduction
- 0:53Transition to application sets
- 10:51Implementing preview apps
- 13:48Advanced configuration
- 16:17Resolving health check issues
- 16:45Secret management strategy
- 17:37CI integration and job logic
- 19:09Addressing job limitations
- 20:06Networking and notifications
- 20:40Access and lifecycle
- 21:15Performance and results
- 23:09Product demo
- 24:13Q&A session
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