Maven / ArgoCD interview questions

How does ArgoCD support Kustomize?

ArgoCD has native Kustomize support built into its Repository Server. When ArgoCD detects a kustomization.yaml (or kustomization.yml / Kustomization) file at the specified path, it automatically runs kustomize build to render the manifests before applying them to the cluster.

No extra configuration is needed beyond pointing the Application's source.path at a Kustomize directory:

source:
  repoURL: https://github.com/my-org/app
  targetRevision: HEAD
  path: k8s/overlays/production

Kustomize-specific overrides available in the Application spec:

kustomize.images: override image names and tags without modifying the repo (useful with ArgoCD Image Updater).
kustomize.namePrefix / nameSuffix: prepend or append a string to all resource names.
kustomize.commonLabels: inject labels into all resources at sync time.
kustomize.version: pin the Kustomize binary version used for rendering.

A typical project structure with Kustomize and ArgoCD uses a base/ directory containing shared manifests and overlays/ directories per environment. Each overlay's kustomization.yaml references the base and applies environment-specific patches. ArgoCD Applications target the overlay path, so each environment gets its own Application pointing to its own overlay — giving full environment isolation with shared base configuration.

How does ArgoCD detect that a source path should be rendered with Kustomize?A kustomize: true flag must be set in the Application spec

✗ Try again — ArgoCD auto-detects Kustomize; no explicit flag is needed.

By finding a kustomization.yaml file at the specified source path

✓ Well done! The presence of kustomization.yaml triggers automatic Kustomize rendering.

Only if the path contains a Chart.yaml alongside the kustomization.yaml

✗ Try again — Chart.yaml indicates Helm, not Kustomize; the two are detected separately.

Which kustomize-specific Application field allows you to override a container image tag without modifying Git?kustomize.commonLabels

✗ Try again — commonLabels injects labels into resources, not image overrides.

kustomize.images

✓ Well done! kustomize.images lets you override image name and tag at the Application level without a Git commit.

kustomize.namePrefix

✗ Try again — namePrefix prepends a string to resource names, not image tags.

kustomize.version

✗ Try again — version pins the Kustomize binary, not the container image.

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Maven / ArgoCD interview questions

How does ArgoCD support Kustomize?

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