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Pull Request testing on Kubernetes: working with GitHub Actions and GKE
- The article discusses the setup of end-to-end testing for Pull Requests on Kubernetes using GitHub Actions and Google Kubernetes Engine (GKE).
- Key steps include creating a GKE instance, configuring Kubernetes manifest with Kustomize, allowing GitHub workflow use of GKE, and building/pushing Docker image to GitHub registry.
- Steps also cover installing PostgreSQL Helm chart, applying app manifest, running end-to-end test, and sizing the cluster for optimal performance.
- Utilizing GitHub Actions for authentication on Google Cloud, creating Kubernetes manifests, accessing private GitHub registry from GKE, and setting up PostgreSQL connection parameters.
- Challenges like setting GitHub image tag, accessing private registry, obtaining IP for deployed app on GKE, and running the end-to-end test are discussed and addressed.
- Implementation includes setting image tag with GitHub Run ID, creating Docker Registry Secret, configuring PostgreSQL and retrieving external deployed app IP.
- Final steps cover end-to-end test execution, potential challenges, and considerations for implementation in organizational setups.
- Challenges of cluster management and isolation in shared clusters are highlighted, with vCluster suggested as a potential solution for isolation in upcoming posts.
- The article showcases the source code and resources for further exploration into deploying to GKE and utilizing GitHub Actions for CI/CD workflows.
- The tutorial offers detailed insights into setting up end-to-end testing workflows for Kubernetes-based projects using GitHub Actions and GKE.
- The article emphasizes practical implementations and considerations for efficient testing and deployment processes in Kubernetes environments.
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