pipelines/k8s-kustomizations/README.md

Environment Promotion using kustomize

• Applications are defined at a central location in the repository
• Each pipeline is represented in Git by a directory under pipelines/
• Each stage of a pipeline is represented as a directory under pipelines/<NAME> where <NAME> is the pipeline's name
• Differences between stages are tracked as kustomize patches
• Promotion happens by modifying the respective kustomize patch file for the specific stage
• Stage 0 is automatically updated using Flux's image update automation

Generic DevX

Promotion

1. Build and push application image
2. Check that Flux updates the application on dev and the app gets healthy
3. Manually promote the application version from dev to staging by creating a commit changing the kustomize patch
4. Check that Flux updates the application on staging and the app gets healthy
5. Manually promote the application version from staging to prod by creating a commit changing the kustomize patch
6. Check that Flux updates the application on staging and the app gets healthy

Pipeline Introspection

Each pipeline stage is represented on the cluster by a Kustomization. The pipeline name is reflected by the pipelines.weave.works/name label on the Kustomization and the order of stages is represented by ascending values of the pipelines.weave.works/stage label.