Kibana, Grafana and Prometheus web user interface not accessible in RHOCP 4.x

Issue

• Kibana container kube-rbac-proxy logs throw below errors while querying OAuth as below:

2022/02/24 10:59:38 oauthproxy.go:656: error redeeming code (client:<x.x.x.x>:<port>): Post "https://oauth-openshift.apps.example.com/oauth/token": context deadline exceeded (Client.Timeout exceeded while awaiting headers)
2022/02/24 10:59:38 oauthproxy.go:445: ErrorPage 500 Internal Error Internal Error

• Kibana, Grafana and Prometheus web pages failing with 500 Internal Error.

• ovnkube-node-xxxx pod container kube-rbac-proxy running over the node hosting Kibana, Grafana and Prometheus pods reporting below logs:

2022-01-19T22:48:46.275507246Z E0119 22:48:46.275430    4370 proxy.go:73] Unable to authenticate the request due to an error: context canceled
2022-01-19T22:49:06.277263980Z E0119 22:49:06.277204    4370 webhook.go:111] Failed to make webhook authenticator request: Post "https://<x.x.x.x>:<port>/apis/authentication.k8s.io/v1/tokenreviews": context deadline exceeded