Connections to kube-apiserver are not working on Single Node OpenShift 4

Issue

• kube-apiserver Pod was restarted during normal operations causing Connection refused errors in application Pods.
• kube-apiserver-operator has RevisionTriggered cause a re-create of kube-apiserver Pod.

• Restarts of kube-apiserver Pod in SNO causes service disruption for internal components, the following error is seen in kube-apiserver-operator Pod under openshift-kube-apiserver-operator.

  base_controller.go:272] InstallerStateController reconciliation failed: Get "https://<kubernetes_svc_ip>:443/api/v1/namespaces/openshift-kube-controller- 
  manager/pods?labelSelector=app%3Dinstaller": dial tcp <kubernetes_svc_ip>:443: connect: connection refused