EX280-Certified OpenShift Administrator Exam Prep Course

Master importing, exporting, and configuring Kubernetes resources in OpenShift using OC apply for declarative updates, OC get -o YAML for exports, and oak extract for secrets and config maps.

Create and delete projects in OpenShift to organize and isolate resources, using the CLI or web console, with projects acting as metadata-enriched Kubernetes namespaces.

Learn to inspect OpenShift resources and monitor cluster health using OC commands (login, get, describe, status) and OC adm, across namespaces and via the web console.

Assess the health of an OpenShift cluster by monitoring nodes, etcd, and operators, using commands like oc get nodes, oc adm top nodes, and oc describe node.

Configure project quotas in OpenShift to cap CPU, memory, and storage, manage object counts, and apply quotas with OC commands and YAML definitions for fair resource allocation.

Configure an htpasswd identity provider in OpenShift by creating a secret with user credentials, updating the OAuth configuration to use a local users identity provider, and validating logins.

Master role-based access controls in OpenShift by configuring cluster-level permissions in a hands-on lab. Ensure Miriam is the only user with cluster modification permissions within a 15-minute task.

Create heroes and Wizards groups in OpenShift, add Alice and Ian, then grant admins for heroes on Neptune, Siren, Triton, Nagus, and grant Wizards view Atlantis and edit Siren.

Configure OpenShift resource limits with a limit range in the Avalon project, defining per-pod and per-container CPU and memory constraints, using YAML and OC create.

Define labels and selectors in OpenShift to organize pods, deployments, and services by key-value pairs, use selectors to query resources, and update labels for environments, tiers, and versions.

OpenShift health probes monitor container health and readiness via liveness and readiness checks, using http get, tcp socket, and exec probes to restart containers and manage traffic.

Master resource requests and limits in OpenShift to allocate CPU and memory for containers, using pod and deployment specs, OC set resources, and monitoring with Prometheus and Grafana.

Master OpenShift image streams as an abstraction over the internal registry, using CLI commands to create, tag, and manage stream tags, history, and image lookup for Kubernetes.

Identify container image references using tags and digests in OpenShift. Learn how mutable tags differ from immutable digests to improve deployment reliability and security.

Roll back failed deployments in OpenShift by rolling back to a previous stable revision, updating the deployment configuration, and replacing pods with the selected revision.