cks
CKS is an open-source learning platform designed to help IT engineers prepare for Kubernetes and AWS EKS certifications (CKA, CKS, CKAD, ICA, KCSA, LFCS). It provides hands-on labs and mock exams using Terraform-automated AWS infrastructure with kubeadm-based Kubernetes clusters.
Key facts
Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.
| Field | Value |
|---|---|
| Repository | ViktorUJ/cks |
| Owner | ViktorUJ |
| Primary language | Shell |
| License | Apache-2.0 — OSI-approved |
| Stars | 1.5k |
| Forks | 282 |
| Open issues | 3 |
| Latest release | Unknown |
| Last updated | 2026-07-07 |
| Source | https://github.com/ViktorUJ/cks |
What cks is
Shell-based orchestration layer that provisions AWS infrastructure (VPC, EC2, S3, security groups) via Terraform and Terragrunt, then deploys self-managed Kubernetes clusters using kubeadm. Supports Kubernetes 1.21–1.34, multiple container runtimes (Docker, CRI-O, containerd, containerd with gVisor), and CNI plugins (Calico, Cilium).
Get the cks source
Clone the repository and explore it locally.
git clone https://github.com/ViktorUJ/cks.gitcd cks# follow the project's README for install & configurationNeed it deployed, integrated, or customized instead? DEV.co ships production installs.
Best use cases
Implementation considerations
- Requires AWS account with IAM admin permissions (VPC, EC2, IAM, EKS) and Terraform/Terragrunt tooling installed locally or via Docker; review AWS cost implications before scaling labs.
- Must configure AWS credentials, backend S3 bucket for Terraform state, and region/profile settings in terragrunt.hcl; state management critical to avoid resource orphaning.
- Labs create temporary EC2 spot instances; monitor and clean up via `make delete_*` commands to avoid unexpected AWS charges.
- Docker run option simplifies setup but adds container overhead; native installation requires GNU Make ≥4.2.1, Terraform ≥1.6.6, Terragrunt ≥0.54.8, jq ≥1.6.
- Custom scenarios can be added using the k8s_self_management Terraform module; requires familiarity with Terraform module patterns and kubeadm networking.
When to avoid it — and what to weigh
- Production Workload Deployment — No release versioning, no security hardening documentation, and single-author maintenance suggest this is not production-grade. Use only for learning.
- Managed Kubernetes Focus — Platform emphasizes kubeadm self-managed clusters. Teams exclusively using EKS managed control planes will find less relevant content.
- Minimal Cloud Budget — Provisioning Terraform-managed AWS infrastructure (EC2, VPC, security groups) incurs costs per lab session. Not suitable for budget-constrained environments.
- Non-Linux Foundation Certifications — Platform is tightly coupled to LF exam syllabuses. Other certification paths or enterprise-specific learning goals may not align well.
License & commercial use
Apache License 2.0 (Apache-2.0). Permissive OSI-approved license allowing commercial use, modification, and distribution with minimal restrictions (retain copyright/license notices, state changes). No patent grants or liability limits specific to this project mentioned; review Apache 2.0 terms for your use case.
Apache-2.0 permits commercial use and derivative works. However, this is a learning platform, not a standalone product. Commercial deployment would require wrapping the platform (e.g., SaaS), managing AWS infrastructure costs, and providing support—none of which are established in this project. Evaluate vendor viability and support expectations if considering commercial adoption.
DEV.co evaluation signals
Editorial assessment — not user reviews. Directional, with an explicit confidence level.
| Signal | Assessment |
|---|---|
| Maintenance | Active |
| Documentation | Adequate |
| License clarity | Clear |
| Deployment complexity | High |
| DEV.co fit | Good |
| Assessment confidence | Medium |
Platform provisions AWS resources with admin-level IAM permissions; users must trust their own AWS account security. No documented secrets management, encryption-at-rest/transit configuration, or audit logging. kubeadm clusters support configurable runtimes (containerd with gVisor for additional isolation). No security advisories or CVE tracking visible. Review AWS IAM least-privilege constraints before granting admin access.
Alternatives to consider
Linux Foundation Official CKA/CKS/CKAD Killer.sh Mock Exams
Official LF exam simulator; no infrastructure provisioning required, focused solely on exam-format practice. Lower setup friction but no hands-on lab infrastructure.
Kodekloud CKA/CKS/CKAD Courses
Hosted learning platform with pre-built labs, video instruction, and exam prep integrated. No AWS account or local tooling required; vendor-managed infrastructure.
Kubernetes.io Official Documentation + Kind or Minikube
Free, upstream Kubernetes docs with lightweight local cluster tools. Suitable for self-study; no cloud costs. Less structured exam-aligned content.
Build on cks with DEV.co software developers
Clone the repository, configure your AWS credentials, and spin up your first lab in minutes. Review the Docker quick-start for minimal local setup.
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cks FAQ
What AWS costs should I expect?
Can I run labs offline or without AWS?
How do I add my own lab scenario?
Is this suitable for production clusters?
Custom software development services
Adopting cks is usually one piece of a larger software development effort. As a software development agency, DEV.co provides software development services and web development expertise — pairing senior software developers and web developers with your team to design, build, and operate open-source devops software in production.
Ready to Prepare for Kubernetes Certification?
Clone the repository, configure your AWS credentials, and spin up your first lab in minutes. Review the Docker quick-start for minimal local setup.