YAML to JSON parsing error when using a numeric as a key in a map?

[spstarr]

What happened?

I am trying to apply a Anthos Service Mesh, Istio PeerAuthentication CR and get error:

This is from Config Sync which is running kustomize build to render the output:

Error: error marshaling into JSON: json unsupported type: map[interface {}]interface {} For more information, see https://g.co/cloud/asm-errors#knv1068

However, if I quote the numeric keys then all works as normal. I'm not sure if this is a parsing error in Kustomize.

What did you expect to happen?

The Resource to apply without error.

How can we reproduce it (as minimally and precisely as possible)?

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
helmGlobals:
  chartHome: ../../charts
helmCharts:
- name: myapp
  version: 0.0.1
  releaseName: my-config-connector
  namespace: default
  valuesFile: values-dev.yaml

apiVersion: security.istio.io/v1beta1
kind: PeerAuthentication
metadata:
  name: istio-peerauth
  namespace: mynamespace
spec:
  selector:
    matchLabels:
       app.kubernetes.io/cluster: mynamespace
  portLevelMtls:
    1234:
      mode: PERMISSIVE
    5000:
      mode: PERMISSIVE
    9000:
      mode: PERMISSIVE
  mtls:
    mode: STRICT

Expected output

No response

Actual output

No response

Kustomize version

Config Sync 1.14.0 managed Kustomize

Operating system

Other

[kamuridesu]

I have some suspects about what's causing this behavior. Let me check to confirm if I am right.

[spstarr]

This is a duplicate of #4928 and I didn't notice ... pending merge

[KnVerey]

Agreed, this is a duplicate of either that issue or possibly #3446

/triage duplicate
/close

[k8s-ci-robot]

@KnVerey: Closing this issue.

In response to this:

Agreed, this is a duplicate of either that issue or possibly #3446

/triage duplicate
/close

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