In IBM Cloud Pak for Integration (CP4I) v2021.2, which runs on Red Hat OpenShift, administrators often need to interact with running containers for troubleshooting, debugging, or configuration changes. The correct command to attach the shell to a running container is:

oc attach -c

This command connects the user to the standard input (stdin), output (stdout), and error (stderr) streams of the specified container inside a pod.

Alternatively, for interactive shell access, administrators can use:

oc exec -it -c -- /bin/sh

or

oc exec -it -c -- /bin/bash

if the container supports Bash.

A. run → ❌ Incorrect

The oc run command creates a new pod rather than attaching to an existing running container.

C. connect → ❌ Incorrect

There is no oc connect command in OpenShift or Kubernetes for attaching to a container shell.

D. shell → ❌ Incorrect

OpenShift and Kubernetes do not have a shell command for connecting to a running container.

Instead, the oc exec command is used to start an interactive shell session inside a container.

Explanation of Incorrect Answers:

OpenShift CLI (oc) Command Reference

IBM Cloud Pak for Integration Troubleshooting Guide

Kubernetes attach vs exec Commands

IBM Cloud Pak for Integration (CP4I) v2021.2 Administration References: