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DevOps Practitioner

A 32-lesson, lab-driven course covering Kubernetes workloads, networking, config, delivery and incident response. Includes 24 hands-on labs.

Practitioner - for engineers who finished Foundations or run containers in production · 8 modules · 32 lessons · ~5 h reading

Module 1

Kubernetes workload management

Kubernetes, Helm, IaC, Ansible, delivery engineering, observability and GitOps.

  • The Kubernetes API and the Declarative Model
  • Deployments and ReplicaSets That Roll Forward
  • Probes That Tell the Truth: Readiness, Liveness and Startup
  • Scheduling: Requests, Limits, Taints and Affinity

Hands-on labs (3) · local guide plus browser playground where linked

  1. 1.The Kubernetes API and the Declarative Model10 min
  2. 2.Deployments and ReplicaSets That Roll Forward10 min
  3. 3.Probes That Tell the Truth: Readiness, Liveness and Startup10 min
  4. 4.Scheduling: Requests, Limits, Taints and Affinity10 min

Module 2

Kubernetes networking and storage

Kubernetes, Helm, IaC, Ansible, delivery engineering, observability and GitOps.

  • Services, Endpoints and DNS Inside the Cluster
  • Ingress and the Request Path
  • Volumes That Survive the Pod: PV, PVC and StorageClass
  • NetworkPolicy: Allow What You Must, Block the Rest

Hands-on labs (3) · local guide plus browser playground where linked

  1. 1.Services, Endpoints and DNS Inside the Cluster10 min
  2. 2.Ingress and the Request Path10 min
  3. 3.Volumes That Survive the Pod: PV, PVC and StorageClass10 min
  4. 4.NetworkPolicy: Allow What You Must, Block the Rest10 min

Module 3

Helm and environment configuration

Kubernetes, Helm, IaC, Ansible, delivery engineering, observability and GitOps.

  • Charts, Templates and Values
  • One Chart, Many Environments Without Copy-Paste
  • Config and Secrets Without Leaking Them
  • Upgrades That Roll Back

Hands-on labs (3) · local guide plus browser playground where linked

  1. 1.Charts, Templates and Values10 min
  2. 2.One Chart, Many Environments Without Copy-Paste10 min
  3. 3.Config and Secrets Without Leaking Them10 min
  4. 4.Upgrades That Roll Back10 min

Module 4

Infrastructure as Code

Kubernetes, Helm, IaC, Ansible, delivery engineering, observability and GitOps.

  • The Plan-Apply Loop and Why It Exists
  • State, Locking and Drift
  • Modules With Clean Inputs and Outputs
  • Lifecycle Rules That Stop Surprises

Hands-on labs (3) · local guide plus browser playground where linked

  1. 1.The Plan-Apply Loop and Why It Exists10 min
  2. 2.State, Locking and Drift10 min
  3. 3.Modules With Clean Inputs and Outputs10 min
  4. 4.Lifecycle Rules That Stop Surprises10 min

Module 5

Ansible and configuration management

Kubernetes, Helm, IaC, Ansible, delivery engineering, observability and GitOps.

  • Inventory, Connection and the First Honest Run
  • Roles, Templates and Handlers That Fire Once
  • Idempotency and Check Mode: Run Twice, Change Once
  • Secrets and Change Safety on Machines You Own

Hands-on labs (3) · local guide plus browser playground where linked

  1. 1.Inventory, Connection and the First Honest Run10 min
  2. 2.Roles, Templates and Handlers That Fire Once10 min
  3. 3.Idempotency and Check Mode: Run Twice, Change Once10 min
  4. 4.Secrets and Change Safety on Machines You Own10 min

Module 6

Safe delivery and release engineering

Kubernetes, Helm, IaC, Ansible, delivery engineering, observability and GitOps.

  • Promote the Artifact, Not a Rebuild
  • Rollout Strategies: Rolling, Canary, Blue-Green
  • Schema Changes Without Downtime: Expand and Contract
  • Change Gates and Rollback Before Diagnosis

Hands-on labs (3) · local guide plus browser playground where linked

  1. 1.Promote the Artifact, Not a Rebuild10 min
  2. 2.Rollout Strategies: Rolling, Canary, Blue-Green10 min
  3. 3.Schema Changes Without Downtime: Expand and Contract10 min
  4. 4.Change Gates and Rollback Before Diagnosis10 min

Module 7

Applied observability and SLOs

Kubernetes, Helm, IaC, Ansible, delivery engineering, observability and GitOps.

  • Metrics, Labels and the Cardinality Budget
  • Logs That Correlate: One Request ID Everywhere
  • Traces: Following a Request Across Services
  • SLIs, SLOs and Alerts That Page for Users

Hands-on labs (3) · local guide plus browser playground where linked

  1. 1.Metrics, Labels and the Cardinality Budget10 min
  2. 2.Logs That Correlate: One Request ID Everywhere10 min
  3. 3.Traces: Following a Request Across Services10 min
  4. 4.SLIs, SLOs and Alerts That Page for Users10 min

Module 8

GitOps and incident response

Kubernetes, Helm, IaC, Ansible, delivery engineering, observability and GitOps.

  • Desired State and Reconciliation
  • GitOps with Argo CD: App of Apps Without the Magic
  • Drift, Manual Changes and the Way Back
  • Incident Response: Triage, Mitigate, Verify, Postmortem

Hands-on labs (3) · local guide plus browser playground where linked

  1. 1.Desired State and Reconciliation10 min
  2. 2.GitOps with Argo CD: App of Apps Without the Magic10 min
  3. 3.Drift, Manual Changes and the Way Back10 min
  4. 4.Incident Response: Triage, Mitigate, Verify, Postmortem10 min