Openshift Comprehensive ++ Dev/Ops: Live Hands-on Katakoda

Compare OpenShift with Kubernetes to choose the right container management platform for deployment. OpenShift offers security policies, an image repository, and integrated pipelines, while Kubernetes emphasizes deployment and namespaces governance.

Explore OpenShift basics with a free online playground for demo purposes. Learn to test code, deploy workloads, and interact with a temporary cluster in an hour-long hands-on session.

Learn to configure the oc client to log into an OpenShift cluster from Windows, install the CLI, set environment variables, and run basic login commands to access a project.

Learn to manage multiple clusters with a single kubeconfig file by creating and switching contexts, configuring users and namespaces, and operating as different roles.

Explore the OpenShift architecture, from container images and Kubernetes orchestration to enterprise builds, deployments, access control, and multi-cloud cluster management.

Explore how the OpenShift K8s scheduler distributes ports across nodes, balancing replicas with CPU and GPU capacities using node labels and node selectors to favor high CPU nodes.

Learn how Kubernetes controllers in OpenShift maintain the desired state by continuously comparing it with the current state and adjusting resources like deployments and services.

Explore how operators codify operational knowledge into automated code to extend application functionality. Identify when to use operators inside clusters to automate updating, backup, recovery, and lifecycle management.

Explore how operators extend controllers by managing custom resources, driving automated tasks through a custom resource and operator code written with an SDK, including Ansible-based options.

Explore the different user types in OpenShift—developer and tester identities, system users for infrastructure, and service accounts for inter-service authentication—to manage authentication, permissions, and secure API access.

Learn to add new users to an openshift cluster by configuring an identity provider, decrypting and updating the secret that stores credentials, and applying the updated secret.

Understand how Openshift uses service accounts and tokens to let bots access apps within a namespace, with RBAC permissions and project ownership, without external identity providers.

Demonstrate creating a service account in a project, generating a token, and logging in with it; attach a role to grant view access to the project and its applications.

Explore how openshift uses groups and policies for system authenticated, system unauthenticated, and custom groups, and how security context constraints elevate privileges to run containers and mount host volumes.

Explore how OpenShift uses resources and endpoints via the open API, authenticates, and applies YAML configurations to deploy apps with replicas, services, and deployments.

Explore how replication controllers and replica sets use labels and selectors to maintain the desired pod replicas in OpenShift, and why replica sets supersede application controllers.

Explore how config maps and secrets separate configuration from code in OpenShift, securely store sensitive data, and pass it to containers via command line or environment variables.

Understand the need for volumes and persistent volumes to preserve Jenkins data across pod replicas. Mount Jenkins home to a shared location to prevent data loss when pods crash.

Explore how volumes preserve state by using persistent volumes and persistent volume claims to share data among pods and prevent data loss across restarts.

Explore how OpenShift uses projects as namespaces to organize apps, allocate quotas, and enable loose coupling. Scale services with isolation to handle demand without impacting other applications.

Learn the basics of deploying an application in an OpenShift project, including creating a deployment, replica sets, and services, scaling with replicas, and exposing the service to external users.

Understand how s2i build strategy converts source code into an image using a builder image, then deploys as containers via OpenShift image streams.