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Module · DevOps Engineer

Kubernetes

Pods, deployments, services and debugging workloads in cluster.

6 topics7 interactive tasks

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TOPIC 01

Fundamentals & Pods

What Kubernetes is and how Pods, the smallest deployable units, work.

What you'll practice

  • Run Your First Pod — guided · beginner

A command you'll meet

kubectl run web --image=nginx:1.27

Open any task below to get the full step-by-step walkthrough — every command is explained, and the lab validator checks what you actually built.

Hands-On Tasks in This Topic (1)

beginner
Guided Task

Run Your First Pod

A Pod is one or more containers that share network and storage — the smallest thing Kubernetes runs. Create one imperatively and watch it reach the Running state.

Environment: kubernetes 1.30 (kind)Launch Lab ⚡

TOPIC 02

Deployments & Scaling

Replicas, self-healing and rolling updates.

What you'll practice

  • Deploy and Scale a ReplicaSet — practice · beginner

A command you'll meet

kubectl create deployment web --image=nginx:1.27 --replicas=3

Open any task below to get the full step-by-step walkthrough — every command is explained, and the lab validator checks what you actually built.

Hands-On Tasks in This Topic (1)

beginner
Practice Task

Deploy and Scale a ReplicaSet

Nobody runs bare Pods in production. A Deployment keeps a chosen number of identical Pods alive and replaces any that die. Create one with 3 replicas.

Environment: kubernetes 1.30 (kind)Launch Lab ⚡

TOPIC 03

Services

Stable networking for unstable Pods.

What you'll practice

  • Expose a Deployment — guided · beginner

A command you'll meet

kubectl create deployment web --image=nginx:1.27

Open any task below to get the full step-by-step walkthrough — every command is explained, and the lab validator checks what you actually built.

Hands-On Tasks in This Topic (1)

beginner
Guided Task

Expose a Deployment

Pods come and go, so their IPs are useless as an address. A Service gives a stable virtual IP and DNS name in front of a set of Pods.

Environment: kubernetes 1.30 (kind)Launch Lab ⚡

TOPIC 04

Debugging Workloads

CrashLoopBackOff is a clue, not a verdict.

What you'll practice

  • Diagnose a Crashing Pod — scenario · intermediate

A command you'll meet

kubectl get pods

Open any task below to get the full step-by-step walkthrough — every command is explained, and the lab validator checks what you actually built.

Hands-On Tasks in This Topic (1)

intermediate
Scenario

Diagnose a Crashing Pod

A Pod called api in this cluster is stuck in CrashLoopBackOff. Find out why from its logs, identify the missing piece, and record it. Failure is part of the curriculum.

Environment: kubernetes 1.30 (kind)Launch Lab ⚡

TOPIC 05

YAML Manifests

Declarative configuration: the way real clusters are managed.

What you'll practice

  • Apply a Manifest — guided · beginner

A command you'll meet

mkdir ~/manifests

Open any task below to get the full step-by-step walkthrough — every command is explained, and the lab validator checks what you actually built.

Hands-On Tasks in This Topic (1)

beginner
Guided Task

Apply a Manifest

Imperative commands are for learning; YAML manifests are for real life. Write a Pod manifest and apply it — the declarative workflow behind GitOps and ArgoCD.

Environment: kubernetes 1.30 (kind)Launch Lab ⚡

TOPIC 06

Configuration & Resource Limits

Keep configuration out of images, and tell the scheduler what each workload is allowed to use.

What you'll practice

  • Keep Configuration Out of the Image — practice · intermediate
  • Set Resource Limits on a Deployment — challenge · advanced

A command you'll meet

kubectl apply -f ~/k8s/deployment.yaml

A manifest that states its limits is a manifest a scheduler can plan for. Open the task below for the full walkthrough.

Hands-On Tasks in This Topic (2)

intermediate
Practice Task

Keep Configuration Out of the Image

The same image runs in staging and in production - only the configuration differs. Write a ConfigMap that holds the environment-specific settings.

Environment: kubernetes 1.30 (kind)Launch Lab ⚡
advanced
Challenge

Set Resource Limits on a Deployment

A pod without limits can starve its neighbours or monopolise the node. Declare CPU and memory limits, apply the manifest and check the rollout.

Environment: kubernetes 1.30 (kind)Launch Lab ⚡