Hands-on deep dives into DevOps and server-side topics, with every command runnable in an attached remote playground.
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 run Valkey on spot instances without losing state
In this tutorial, we will learn how to use the new plugin system in Flux 2.9 to: validate manifests, mirror charts into local registries and deploy using Gitless GitOps principles.
Learn how to run any database on Kubernetes with KubeBlocks!
Learn how to run any database on Kubernetes with KubeBlocks!
Learn how to run any database on Kubernetes with KubeBlocks!
Learn how to run any database on Kubernetes with KubeBlocks!
Learn how to run any database on Kubernetes with KubeBlocks!
Build a Kubernetes operator for a small Pet API, first as a 15-line bash loop and then as a Go controller with controller-runtime. Every Pet gets a Pod to live in, gets hungry as time passes, and runs away if nobody feeds it. Along the way, you'll see how the reconcile loop works.
Build a CustomResourceDefinition for a small Pet API one layer at a time, and see how much the API server does with it on its own. By the end, it rejects invalid Pets, fills in defaults, keeps status separate, and prints useful columns. No controller and no code needed.
This tutorial provides an in-depth know-how of working with Pods (group of container) with Podman. It also gives insights into how the podman CLI works well with Kubernetes, albeit in limited capacity to develop better Container Workflows.
Most Kubernetes debugging images ship as a single 200+ MB package. DebugBox takes a different approach: three variants (15 MB, 47 MB, 91 MB) each scoped to a specific debugging task. This tutorial covers when to use lite, balanced, and power, how to run each as an ephemeral container or debug pod, and what tools are available in each variant.
Hands-on Kubernetes security workshop using the ShopWave demo app. Explore attack paths against a realistic e-commerce stack: Next.js storefront, FastAPI order service, and a notification webhook.
In this lab, you’ll build a NAT-based eBPF/XDP load balancer from scratch and implement both round-robin and weighted round-robin backend selection. Along the way, you’ll learn how to manage state in eBPF maps and distribute traffic across backends based on simple and capacity-aware scheduling strategies.
In this lab, you will extend the eBPF/XDP-based NAT load balancer implementation with the least-connections to a weighted least-connections algorithm that accounts for backend capacity.
Exploit a Kubernetes RBAC authorization bypass where nodes/proxy GET permissions allow command execution in any Pod.
Learn how to configure and use Kubernetes Runtime Classes to specify different container runtimes for your workloads. Explore different OCI runtimes and their scheduling constraints.
Dive deep into Kubernetes admission control with hands-on examples. Learn how admission controllers influence cluster behavior, apply default configurations, and enforce policies for consistency and compliance.
Learn how to set up a Kubernetes cluster from scratch using kubeadm.
Learn how to test, package and release Helm charts using Dagger.
