Bug 1707516

Summary: MCO updates role bindings too frequently
Product: OpenShift Container Platform Reporter: Mo <mkhan>
Component: Machine Config OperatorAssignee: Antonio Murdaca <amurdaca>
Status: CLOSED DUPLICATE QA Contact: Micah Abbott <miabbott>
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Priority: medium    
Version: 4.1.0   
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Last Closed: 2019-05-07 19:23:27 UTC Type: Bug
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Description Mo 2019-05-07 16:59:30 UTC
Based on audit logs of a cluster that has been running for a day:

$ cat * | grep '"resource":"rolebindings"' | grep '"verb":"update"' | jq -r '.user.username+"\t->\t "+.objectRef.namespace+":"+.objectRef.name' | sort | uniq -c
   3577 system:serviceaccount:openshift-machine-config-operator:default	->	 default:machine-config-daemon-events
   3577 system:serviceaccount:openshift-machine-config-operator:default	->	 openshift-machine-config-operator:machine-config-daemon-events
    320 system:serviceaccount:openshift-monitoring:cluster-monitoring-operator	->	 default:prometheus-k8s
    320 system:serviceaccount:openshift-monitoring:cluster-monitoring-operator	->	 kube-system:prometheus-k8s
    321 system:serviceaccount:openshift-monitoring:cluster-monitoring-operator	->	 kube-system:resource-metrics-auth-reader
    320 system:serviceaccount:openshift-monitoring:cluster-monitoring-operator	->	 openshift-apiserver:prometheus-k8s
    320 system:serviceaccount:openshift-monitoring:cluster-monitoring-operator	->	 openshift-cluster-version:prometheus-k8s
    320 system:serviceaccount:openshift-monitoring:cluster-monitoring-operator	->	 openshift-etcd:prometheus-k8s
    321 system:serviceaccount:openshift-monitoring:cluster-monitoring-operator	->	 openshift-kube-controller-manager:prometheus-k8s
    321 system:serviceaccount:openshift-monitoring:cluster-monitoring-operator	->	 openshift-kube-scheduler:prometheus-k8s
    320 system:serviceaccount:openshift-monitoring:cluster-monitoring-operator	->	 openshift-monitoring:prometheus-k8s
    320 system:serviceaccount:openshift-monitoring:cluster-monitoring-operator	->	 openshift-monitoring:prometheus-k8s-config
    210 system:serviceaccount:openshift-network-operator:default	->	 openshift-infra:openshift-sdn-controller-account
    210 system:serviceaccount:openshift-network-operator:default	->	 openshift-sdn:openshift-sdn-controller-leaderelection
    210 system:serviceaccount:openshift-network-operator:default	->	 openshift-sdn:prometheus-k8s

MCO is continuously updating two role bindings.  It should only update when the role binding is different than the expected value.

Comment 1 Antonio Murdaca 2019-05-07 19:23:27 UTC

*** This bug has been marked as a duplicate of bug 1703234 ***