resource.customizations.ignoreDifferences doesn't save configuration

[IvanovOleg]

Describe the bug
I have an argocd application that contains a following configmap:

kind: ConfigMap
metadata:
  annotations:
    kubectl.kubernetes.io/last-applied-configuration: >
      {"apiVersion":"v1","data":{},"kind":"ConfigMap","metadata":{"annotations":{},"labels":{"app.kubernetes.io/instance":"kubecost","config.openshift.io/inject-trusted-cabundle":"true"},"name":"ca-inject","namespace":"kubecost"}}
  creationTimestamp: '2023-12-16T02:24:01Z'
  labels:
    app.kubernetes.io/instance: kubecost
    config.openshift.io/inject-trusted-cabundle: 'true'
  managedFields:
    - apiVersion: v1
      fieldsType: FieldsV1
      fieldsV1:
        'f:data':
          'f:ca-bundle.crt': {}
      manager: cluster-network-operator/configmap_ca
      operation: Apply
      time: '2023-12-16T02:24:01Z'
    - apiVersion: v1
      fieldsType: FieldsV1
      fieldsV1:
        'f:metadata':
          'f:annotations':
            .: {}
            'f:kubectl.kubernetes.io/last-applied-configuration': {}
          'f:labels':
            .: {}
            'f:app.kubernetes.io/instance': {}
            'f:config.openshift.io/inject-trusted-cabundle': {}
      manager: argocd-controller
      operation: Update
      time: '2023-12-16T02:24:01Z'
  name: ca-inject
  namespace: kubecost
  resourceVersion: '351766'
  uid: 0955b2d6-daf1-4544-b392-926fc14b960b

As you can see cluster-network-operator/configmap_ca is managing that data field and inject openshift ca-bundle content there. Since that field is different from desired it is always out of sync. I tried to add a configuration to my ArgoCD CDR instance in these ways, but that configmap still out of sync. Also I've spotted that ArgoCD doesn't save a piece of the configuration:

# input:
resourceIgnoreDifferences:
  all:
    managedFieldsManagers:
      - cluster-network-operator/configmap_ca
      - cluster-network-operator
      - configmap_ca

# saved 
resourceIgnoreDifferences:
  all:
    managedFieldsManagers:
      - cluster-network-operator/configmap_ca
      - cluster-network-operator
      - configmap_ca

# in configmap
resource.customizations.ignoreDifferences.all: |
  jqpathexpressions: []
  jsonpointers: []
  managedfieldsmanagers:
  - cluster-network-operator/configmap_ca
  - cluster-network-operator
  - configmap_ca

# input
resourceIgnoreDifferences:
  resourceIdentifiers:
    - group: ''
      kind: configmaps
      customization:
        managedFieldManagers:
          - cluster-network-operator/configmap_ca
          - cluster-network-operator
          - configmap_ca

# saved
resourceIgnoreDifferences:
  resourceIdentifiers:
    - customization: {}
      group: ''
      kind: configmaps

# configmap
resource.customizations.ignoreDifferences.configmaps: |
    jqpathexpressions: []
    jsonpointers: []
    managedfieldsmanagers: []

# input
resourceIgnoreDifferences:
  resourceIdentifiers:
    - group: ''
      kind: configmaps
      customization:
        jsonpointers:
          - /data
        managedFieldManagers:
          - cluster-network-operator/configmap_ca
          - cluster-network-operator
          - configmap_ca

# saved
resourceIgnoreDifferences:
  resourceIdentifiers:
    - customization:
        jsonPointers:
          - /data
      group: ''
      kind: configmaps

# configmap
resource.customizations.ignoreDifferences.configmaps: |
  jqpathexpressions: []
  jsonpointers:
  - /data
  managedfieldsmanagers: []

# input
resourceIgnoreDifferences:
  resourceIdentifiers:
    - group: ''
      kind: configmaps
      customization:
        jqPathExpressions:
          - .data
        managedFieldManagers:
          - cluster-network-operator/configmap_ca
          - cluster-network-operator
          - configmap_ca
# saved
resourceIgnoreDifferences:
  resourceIdentifiers:
    - customization:
        jqPathExpressions:
          - .data
      group: ''
      kind: configmaps

# configmap
resource.customizations.ignoreDifferences.configmaps: |
    jqpathexpressions:
    - .data
    jsonpointers: []
    managedfieldsmanagers: []

Expected behavior
Configmap is in sync

[oscrx]

This is years too late, but I just stumbled on it now and it might help someone in the future.

I think the the resource kind is incorrectly cased. I think it should be ConfigMap instead of configmaps

I use this functionality on some resources and tested with those.

This works for me:

  ignoreDifferences:
    - group: ''
      kind: ConfigMap
      name: some-configmap
      managedFieldsManagers:
        - some-other-operator

And this doesn't:

  ignoreDifferences:
    - group: ''
      kind: configmaps
      name: some-configmap
      managedFieldsManagers:
        - some-other-operator