I am trying to deploy mongodb pods (1 Primary & 2 Secondary) in OpenShift, they got deployed but went to "Error" state with the following error,

exception in initAndListen: IllegalOperation: Attempted to create a lock file on a read-only directory: /data/db, terminating

The mongo pods are up and running successfully after the issue of following adm policy,

oc adm policy add-scc-to-group anyuid system:authenticated

Now I am trying to deploy a springboot application that connects to mongodb but the pod is restarting multiple times because of the following error,

 INFO Exception in monitor thread while connecting to server mongo-node-2.database:27017
com.mongodb.MongoSocketOpenException: Exception opening socket
Caused by: java.net.SocketTimeoutException: connect timed out
                        INFO Exception in monitor thread while connecting to server mongo-node-3.database:27017
com.mongodb.MongoSocketOpenException: Exception opening socket
Caused by: java.net.SocketTimeoutException: connect timed out
                        INFO Exception in monitor thread while connecting to server mongo-node-1.database:27017
com.mongodb.MongoSocketOpenException: Exception opening socket
Caused by: java.net.SocketTimeoutException: connect timed out
                        WARN Exception encountered during context initialization - cancelling refresh attempt: org.springframework.context.ApplicationContextException: Failed to start bean 'org.springframework.kafka.config.internalKafkaListenerEndpointRegistry'; nested exception is org.apache.kafka.common.errors.TimeoutException: Timeout expired while fetching topic metadata
org.springframework.context.ApplicationContextException: Failed to start bean 'org.springframework.kafka.config.internalKafkaListenerEndpointRegistry'; nested exceptio  is org.apache.kafka.common.errors.TimeoutException: Timeout expired while fetching topic metadata
Caused by: org.apache.kafka.common.errors.TimeoutException: Timeout expired while fetching topic metadata

The springboot app pod is uanble to connect to mongodb pod when deployed through openshift, so I have created a dummy pod using k8s and tried to connect mongodb pod and the connection is successful,

mongo mongo-node-1.database.svc (successful)

I am able to connect to mongodb from outside the OpenShift cluster through NodePort, from within the cluster using dns (mongo-node-1.database.svc) and from a pod created though k8s but not from the OpenShift deployment.

I suspect that the issue might be because of some policy that OpenShift is blocking the springboot pod to connect with the mongodb pod.

Any suggestions please.