Certified Kubernetes Administrator Ultimate Masterclass

Master essential vim tips for the Kubernetes exam, including backups, search and replace, appending and indenting, deleting and inserting lines, adding node ports, and building multi-container pods.

Create and consume Kubernetes secrets in the secrets demo namespace deployment using environment variables and mounted secret volumes. Verify secrets via pod environment and secret files.

Create and consume config maps in three ways—literal keys, environment file, and properties file—and configure deployments with environment variables and volume mounts to /config.

Master Kubernetes deployments by creating multi-container pods, managing replicas and resources, updating images, and recording rollout history. Expose services, autoscale with the horizontal pod autoscaler, and perform pod operations.

Set up a Kubernetes namespace and configure memory and CPU resource quotas with requests and limits, deploy a pod, and validate quota usage.

Learn how to enable a readiness probe for a Kubernetes pod, using a startup script that creates a ready file and checks it at intervals to mark the pod ready.

Demonstrates Kubernetes startup, liveness, and readiness probes in a Probes Demo namespace with an nginx deployment, showing yaml configuration and copying startup, live, and ready files.

Configure a Kubernetes deployment with a dedicated namespace and service account, applying security context settings (run as user, run as group) and strict privileges via a dry-run YAML workflow.

Learn YAML, a human-friendly data serialization format for configuration and cross-language data sharing. Explore indentation-based structure, data types, anchors, and basic syntax like blocks and document separators.

Explore Docker as an open platform for developing, shipping, and running applications, covering containers, images, Dockerfile, Docker Compose, registries like Docker Hub, and the Docker daemon and client.

Discover what Kubernetes is and why it powers containerized workloads with declarative configuration, automation, and self-healing across scalable deployments.

Learn Kubernetes core architecture, including control plane and node components, cloud controller manager, add-ons, networking, and high availability for deploying and managing containerized applications.

Explore Kubernetes storage, security, auto scaling, custom resources, observability, best practices, and the ecosystem and community around Kubernetes core architecture—part two.

Master kubectl node commands to inspect cluster nodes, view detailed node information, manage labels and taints, drain and cordon nodes, and monitor node events for efficient Kubernetes administration.

Explore how Kubernetes namespaces partition a cluster to group and isolate resources, enforce quotas, and apply network policies for multi-tenant environments and separate development, staging, and production.

Master kubectl namespace commands by aliasing kubectl to k, listing, creating, describing, and labeling namespaces; viewing namespace yaml, setting resource quotas and limit ranges, and managing contexts and default namespaces.

Explore Kubernetes pods as the smallest deployable unit and their lifecycle. Learn about multi-container pods, pod networking, health checks, resource management, security, autoscaling, topology spread constraints, and storage.

Master kubectl pod commands to list, describe, monitor, and manage pods across namespaces using get, describe, logs, top, watch, exec, port-forward, apply, delete, label, annotate, copy, and attach.

Master kubectl deployment commands part 2 by editing deployments with resources, readiness and liveness probes, config maps, secrets, volumes, and init containers; learn blue-green, rolling updates, and autoscaling concepts.

A daemonset ensures every node runs a single pod, managing its lifecycle as nodes join or leave the cluster, with uses like storage, logs, and monitoring.

Master stateful sets, a Kubernetes workload that ensures stable network identifiers, persistent storage, ordered deployment and scaling, and automated rolling updates.

Master kubectl job and cronjob commands to create, describe, list, and delete jobs and cronjobs, generate and apply yaml, monitor status, and manage retries and history.

Master kubectl service commands to list, describe, format, and manage Kubernetes services across namespaces, create various service types (cluster IP, nodeport, load balancer, external name), and test connectivity.

Master kubectl config map commands to list, describe, create, edit, patch, and export config maps across namespaces, using literals, files, directories, dot env, and labels, with yaml or json formats.

Explore how Kubernetes secrets store credentials and keys separate from application code to protect API keys, database credentials, and certificates.

Explore how Kubernetes labels and selectors organize resources, enable service targeting, and support deployment rollouts, scaling, and monitoring using key value labels and equality or set-based selectors.

Master Kubernetes resource management by configuring requests and limits, understanding QoS classes, quotas, and limit ranges, and using monitoring tools to optimize autoscaling and performance.

Master kubectl resource requests and limits with milli cores and mebibytes, and learn how guaranteed, burstable, and best effort QoS classes guide pod scheduling.

Troubleshoot Kubernetes clusters by verifying nodes with kubectl get nodes and cluster info dump, then debug nodes and inspect kubelet and kube proxy logs.

Explore taints and tolerations that control Kubernetes pod scheduling on tainted nodes. Apply taints to nodes and tolerations to pods with kubectl taint and YAML for targeted workloads.

Explore how Kubernetes storage uses volumes and the PV and PVC lifecycles, plus dynamic provisioning with storage classes to persist and attach data to pods. Understand volume types such as emptyDir, hostPath, and projected volumes, ephemeral storage, volume snapshots, CSI cloning, and Windows storage considerations for robust data management.

Ingress objects expose HTTP/HTTPS routes from outside the cluster to services, enabling load balancing, TLS termination, and host-based routing with path rules through an ingress controller.

Configure Kubernetes apps using container environment variables with env and env from, pulling values from config maps and secrets to decouple configuration from code.

Explore how to define commands and arguments for Kubernetes containers, compare Docker file entrypoint and CMD with Kubernetes command and args, and learn override rules and environment variable usage.

Explore how security context in kubernetes provides fine-grained access control, covering discretionary access control, SELinux, Linux capabilities, run as user or group, group change policy, seccomp, and Linux labels.

Static pods are managed by the kubelet on a worker node, not by the API server, and run with mirror pod; they cannot reference service accounts, config maps, or secrets.