Description of problem:

In ice02-0, the configmap penshift-monitoring/cluster-monitoring-config has 2 additionalAlertmanagerConfigs. it is not right.

[root@ice02 ~]# oc get configmap cluster-monitoring-config -n openshift-monitoring -oyaml
apiVersion: v1
data:
  config.yaml: |
    enableUserWorkload: true
    nodeExporter:
      collectors:
        buddyinfo: {}
        cpufreq: {}
        ksmd: {}
        mountstats: {}
        netclass: {}
        netdev: {}
        processes: {}
        systemd: {}
        tcpstat: {}
    prometheusK8s:
      additionalAlertmanagerConfigs:
      - apiVersion: v2
        bearerToken:
          key: token
          name: observability-alertmanager-accessor
        scheme: https
        staticConfigs:
        - alertmanager-open-cluster-management-observability.apps.ice02-0.qe.red-chesterfield.com
        tlsConfig:
          ca:
            key: service-ca.crt
            name: hub-alertmanager-router-ca
          insecureSkipVerify: false
      - apiVersion: v2
        bearerToken:
          key: token
          name: observability-alertmanager-accessor-ice02-1
        scheme: https
        staticConfigs:
        - alertmanager-open-cluster-management-observability.apps.ice02-1.qe.red-chesterfield.com
        tlsConfig:
          ca:
            key: service-ca.crt
            name: hub-alertmanager-router-ca-ice02-1
          insecureSkipVerify: false
      externalLabels:
        managed_cluster: f2dcd80f-52ef-4f8d-95eb-da711e6ab13c
kind: ConfigMap
metadata:
  creationTimestamp: "2025-10-13T05:47:12Z"
  name: cluster-monitoring-config
  namespace: openshift-monitoring
  resourceVersion: "79739685"
  uid: ed0feb20-613a-4efe-be27-3ab1bbd45fd7

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