Updating a configmap's data with enableDryRun fails with "configsmap already exists"

Changing the data on a ConfigMap with enableDryRun: true on EKS 1.19/ K3S v1.20.4 causes the following error:

kubernetes:core/v1:ConfigMap (test2):
    error: resource default/pierlucg-test was not successfully created by the Kubernetes API server : configmaps "pierlucg-test" already exists

Steps to reproduce

Run pulumi up twice with the following code:

const eksProviderDry = new k8s.Provider('eksdry', {
  enableDryRun: true,
  kubeconfig: 'mykubeconfig'
});

const configMapTest = new k8s.core.v1.ConfigMap(
  'this-will-fail',
  {
    data: {foo: `${Date.now()}`},
    metadata: {
      name: `failing-configMap`,
    },
  },
  {provider: eksProviderDry},
);

const eksProvider = new k8s.Provider('eks', {
  kubeconfig: 'mykubeconfig'
});

const configMapWorking = new k8s.core.v1.ConfigMap(
  'this-will-succeed',
  {
    data: {foo: `${Date.now()}`},
    metadata: {
      name: `fonctioning-configMap`,
    },
  },
  {provider: eksProvider},
);

This will be the result the second time:

Previewing update (mystack.dev):
     Type                             Name                                       Plan        Info
     pulumi:pulumi:Stack              myproject-mystack.dev              1 error
 +-  ├─ kubernetes:core/v1:ConfigMap  this-will-succeed                          replace     [diff: ~data]
 +-  └─ kubernetes:core/v1:ConfigMap  this-will-fail                             replace     [diff: ~data]; 1 error
 
Diagnostics:
  pulumi:pulumi:Stack (myproject-mystack.dev):
    error: preview failed
 
  kubernetes:core/v1:ConfigMap (this-will-fail):
    error: Preview failed: resource default/failing was not successfully created by the Kubernetes API server : configmaps "failing" already exists

Context (Environment)

Using Typescript EKS Server Version: v1.19.8-eks-96780e Pulumi Version: v3.1.0 “@pulumi/kubernetes” Version: “^3.1.0”

I also tested with a local K3S cluster and the issue still occurs.

---

Might affect https://github.com/pulumi/pulumi-kubernetes/issues/1556

[ghost]

I’ll leave the decision whether to close this issue up to you. With my newly found understanding (thank you), I now know how to avoid this problem. That being said, I agree that there might be a better way to at least provide a more meaningful error.

Thanks again!

[ghost]

I tried with enableDryRun: false and the configmap updated was replaced just fine.