You want to view pods with their IP addresses in OpenShift.

OpenShift provides various commands to view and manage pods. Let’s analyze each option:

A. oc qet pods -o vaml

Incorrect:

The command contains a typo (qetinstead ofget) and an invalid output format (vaml). The correct format would beyaml, but this command does not display pod IP addresses.

B. oc get pods -o wide

Correct:

Theoc get pods -o widecommand displays detailed information about pods, including their names, statuses, andIP addresses. The-o wideflag extends the output to include additional details like pod IPs and node assignments.

C. oc qet all

Incorrect:

The command contains a typo (qetinstead ofget). Even if corrected,oc get alllists all resources (e.g., pods, services, deployments) but does not display pod IP addresses.

D. oc get pods

Incorrect:

Theoc get podscommand lists pods with basic information such as name, status, and restart count. It does not include pod IP addresses unless the-o wideflag is used.

Why oc get pods -o wide?

Detailed Output:The-o wideflag provides extended information, including pod IP addresses, which is essential for troubleshooting and network configuration.

Ease of Use:This command is simple and effective for viewing pod details in OpenShift.

JNCIA Cloud References:

The JNCIA-Cloud certification emphasizes understanding OpenShift CLI commands and their outputs. Knowing how to retrieve detailed pod information is essential for managing and troubleshooting OpenShift environments.

For example, Juniper Contrail integrates with OpenShift to provide advanced networking features, relying on accurate pod IP information for traffic routing and segmentation.