Environments with Kustomize: Bases, Overlays, Image Tags and configMapGenerator
With Kustomize shared manifests live in a base, each environment writes only its differences in an overlay, and configMapGenerator's hash suffix triggers a rollout when config changes. With real output we share an HPA/PDB through a component, compare JSON Patch with strategic merge patch, run kustomize edit set image in CI, and watch commonLabels change a selector and take the service down through a half-finished apply.
8 Nov 2026
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9 min
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