Tutorials, challenges, courses, skill paths, playgrounds, and more — search the whole library in one place.
How Virtual Machines were used to deploy services. What old problems containers solve and what new problems create. How Kubernetes used containers to recreate Virtual Machines in a better way?
Can a Kubernetes Pod be created with plain Docker commands? Learn the difference between Containers and Pods by exploring how they are implemented under the hood.
Understand the "native" sidecar containers, learn their difference from regular and init containers and discover their advantages in this focused and highly practical tutorial.
Deploy VictoriaMetrics on Kubernetes using the VM Operator, configure metrics scraping with CRDs, and query cluster metrics.
Learn how to edit a file in a running Kubernetes Pod when the container's user has no write access to it.
Learn how to edit a file in a distroless container that runs as a non-root user in a Kubernetes namespace that enforces the baseline Pod Security Standard.
A payment service subscribes to payment requests through NATS. Run the checkout team's test script as a Job in the checkout namespace, with the required settings, and make sure the payment request arrives.
A freshly rolled out Deployment has its Pods stuck in ImagePullBackOff, and the catalog page it serves returns 503. Read what the cluster reports about the failed pulls, find out why the image does not pull, and get the Pods running.
A hands-on, step-by-step guide to assembling a Kubernetes cluster from the ground up, (without using any automation) while deeply exploring each component's role and functionality along the way.
We ♥️ supply chain security, thus was created SBOM - the Bill of Materials- but, we also need SBOB -the Bill of Behavior - This livelab proposes to standardize how to record a benign behavior profile, extract, sign and publish it, for users to consume, ingest, verify it and detect attacks and tampering. For software-vendors, a SBOB creates trust and transparency, For users, it makes anomaly detection realistically achievable.
Practice using 'kubectl debug' to troubleshoot Kubernetes Pods when 'kubectl exec' isn't enough. Learn how to inspect processes, access files, and work around security restrictions using ephemeral containers.
Start by learning how to limit process resources in Linux using cgroups—from the most basic, hands-on cgroupfs manipulation to the more convenient systemd-run command. Then, explore how Docker and Kubernetes leverage cgroups to control the resource usage of containers and pods.
Six hands-on challenges covering every Kubernetes workload resource. Build Pods, ReplicaSets, Deployments, DaemonSets, StatefulSets, Jobs, and CronJobs by hand and understand the ownership chains that connect them.
Four hands-on challenges covering the full storage stack. Start with emptyDir, move to dynamic provisioning with StorageClass, explore static PV binding patterns including label selectors, bidirectional claimRef, and topology-aware local volumes, then finish with PV reclaim policies and data recovery.
Fast, repeatable Docker and kubectl exercises for local images and containers, tags, registries, image archives, and private images in Kubernetes.
Fast, repeatable kubectl exercises for environment variables, ConfigMaps, Secrets, and the Downward API.
Fast, repeatable kubectl exercises for Pod volumes, PersistentVolumes, claims, and StorageClasses.
Fast, repeatable kubectl exercises for the Job and CronJob lifecycle.
A multi-node Kubernetes cluster provisioned with kubeadm, allowing you to choose your preferred container runtime and networking plugin. Perfect for CKA, CKAD, and CKS preparation.
A collection of mini-programs demonstrating Kubernetes client-go usage and a loaded IDE. Handy if you need to write a controller or two.
