kustomize patch fails: error: no matches for OriginalId ~G_v1_Deployment|~X|my-app

The patch target (kind/name, and namespace if set) matches nothing in the base - the name or kind is misspelled, the resource is not in the resources list, or a namePrefix already renamed it so the target name no longer exists. Check the base's actual resource names (kustomize build base | grep -E kind/name), fix the target to match, and rebuild.

The error

error: no matches for OriginalId ~G_v1_Deployment|~X|my-app

What to do

1. See what the base actually contains:

kustomize build base | grep -E '^kind:|^  name:'

Expected: Lists real kinds and names.

1. Compare with the patch target in the overlay's kustomization.yaml.

Expected: Spots the mismatch: typo, wrong kind, or prefixed name.

1. Fix the target name/kind (remember namePrefix/nameSuffix rewrite names before patches match).

Expected: Target matches a real resource.

1. Rebuild:

kustomize build [overlay]

Expected: Patch applies cleanly.

When this applies

• the exact no matches for OriginalId message
• patches written against assumed names
• namePrefix/nameSuffix changing names under patches

When it does NOT apply

• patches that apply but change nothing (target matched, patch is a no-op)
• strategic-merge patches with wrong container names (different failure)

Works with

kustomize 4.x/5.x

error: no matches for Id ... (other id formats)

Same miss, different resource. Same name-check fix.

Why it happens

Patches match against the resource ids produced after name transformers run. A target written for the pre-prefix name, or for a resource that is not in the build, matches nothing.

Edge cases

• Patches in the base vs the overlay see different names when the overlay adds a prefix - target the post-prefix name.
• namespace in the target must also match; a target without namespace matches cluster-scoped or default only.

Resolved from

gh:devsatym/kubernetes-playbook (kustomize patterns) - https://github.com/devsatym/kubernetes-playbook/blob/HEAD/1.cka/11.)%20Helm%20&%20Kustomize/2.Kustomize.md