Certified Kubernetes Network Engineer (CKNE)
The new CNCF certification for Kubernetes networking — think of it as a cloud-native counterpart to the CCNA
What Is the CKNE Certification?
The Certified Kubernetes Network Engineer (CKNE) is a performance-based certification from the Cloud Native Computing Foundation (CNCF) and Linux Foundation Education, introduced at KubeCon + CloudNativeCon North America 2025. Often described in the cloud native community as a counterpart to the CCNA, the CKNE is an intermediate-level, hands-on exam covering the networking layer of Kubernetes and cloud native platforms: CNI plugin installation and configuration, service networking and DNS, the Gateway API, advanced traffic management, network security and policy, and network observability. The curriculum is vendor-neutral and community-built, and is expected to draw on concepts from ecosystem projects like Cilium, Calico, Flannel, and Istio without locking you into any single vendor.
Why CKNE Is in Demand
First Dedicated K8s Networking Certification
Networking has always been one of the hardest parts of Kubernetes, yet no vendor-neutral certification covered it end-to-end. CKNE is the first CNCF credential dedicated to Kubernetes-wide networking.
The Cloud-Native CCNA
The CKNE is widely seen as a cloud-native counterpart to the CCNA — a clear on-ramp for the huge population of network engineers whose workloads are moving into Kubernetes.
Networking Skills Are the Top Cluster Pain Point
DNS failures, service routing issues, and network policy misconfigurations are among the most common production Kubernetes incidents. Engineers who can debug them are in constant demand.
Gateway API & Service Mesh Era
The Gateway API, eBPF-based CNIs like Cilium, and service meshes like Istio are reshaping cluster traffic management. CKNE validates you can operate this modern networking stack.
Higher Earning Potential
Kubernetes networking sits at the intersection of two well-paid specialties — cloud-native platform engineering and network engineering — commanding a premium over generalist roles.
Vendor-Neutral, Community-Built
The exam is created by members of the cloud native community without vendor lock-in, and is expected to draw on ecosystem projects like Cilium, Istio, Calico, and Flannel — so the skills transfer anywhere.
CKNE Exam Domains
Prioritize your study time based on domain weights.
- Configuring L4 Services
- Understanding kube-proxy and CNI alternatives
- Customizing CoreDNS for Services
- Troubleshooting service network traffic
- Configuring Pod endpoint availability
- Managing traffic with the Gateway API (Gateway, HTTPRoutes)
- Securing traffic with Network Policies
- Implementing node and Pod level encryption
- Managing TLS certificates for the Gateway API
- Implementing Pod-level authentication and authorization
- Installing and configuring CNI plugins
- Managing IPAM and Pod CIDR allocation
- Using Linux tools (iptables, ip, tcpdump) for packet-level issues
- Troubleshooting Pod connectivity (DNS, pod-to-pod)
- Configuring multi-interface Pods
- Optimizing LLM traffic
- Implementing routing to expose networks
- Configuring egress gateways for cluster exit traffic
- Implementing cross-cluster service discovery and load balancing
- Analyzing network health using metrics
- Troubleshooting end-to-end network performance with tracing
- Auditing traffic with logs
Your CKNE Learning Path
A structured roadmap from zero to certified.
- 1 Master Kubernetes Fundamentals
Get comfortable with Pods, Deployments, Services, and kubectl. If you are new to Kubernetes, the KCNA curriculum is an ideal starting point before specializing in networking.
- 2 Go Deep on the Networking Model
Study how pod-to-pod connectivity, kube-proxy, CoreDNS, and the CNI actually work. Understand ClusterIP, NodePort, and LoadBalancer services end-to-end, then learn the Gateway API — it appears across multiple CKNE domains.
- 3 Get Hands-On with CNIs & Network Tools
Install and configure Cilium, Calico, or Flannel in a real cluster. Break DNS on purpose, trace packets with tcpdump and iptables, write Network Policies, and set up egress gateways. The CKNE is performance-based, so command-line fluency is everything.
- 4 Take Timed Mock Exams
Simulate exam conditions with full-length, performance-based CKNE mock exams — 100+ networking scenarios in a real Kubernetes cluster. Identify weak areas and refine your time management before the real exam.
- 5 Review & Sit the Exam
Review the Kubernetes documentation, bookmark key networking pages (Services, Network Policies, Gateway API, DNS), and schedule your proctored exam when you consistently score above 80% on mocks.
Try our CKNE mock exams →
CKNE Certification-Ready Mock Exam Bundle
Practice with five full-length, performance-based CKNE mock exams featuring 100+ hands-on networking scenarios in a real Kubernetes cluster — aligned with the official CKNE curriculum, just like the actual exam.
CKNE Guides & Resources
How to Build a Kubernetes Practice Lab for the CNCF Exams (CKA, CKAD, CKS): kind, minikube & kubeadm
The CNCF Kubernetes exams are hands-on and unforgiving. This practitioner guide shows you how to build a reusable local practice lab with minikube, kind, and kubeadm — including a multi-node kind config, exam-realistic shell setup, and how to match your lab to each exam.
How CNCF Kubernetes Exams Work in 2026: Proctoring, Allowed Docs, Retakes & Exam-Day Rules (CKA, CKAD, CKS, KCNA, KCSA)
A practitioner's guide to the logistics behind every CNCF Kubernetes exam: remote proctoring, the PSI exam environment, allowed documentation, ID and workspace rules, retake policy, and results — for all five KubeAstronaut exams.
The KubeAstronaut Curriculum Map: Every Domain Tested Across All 5 CNCF Kubernetes Exams (2026)
A complete, side-by-side map of every domain tested across the five CNCF Kubernetes certifications — KCNA, KCSA, CKA, CKAD, and CKS — that make up the KubeAstronaut title. See exam formats, domain weightings, where the exams overlap, and exactly which skills are unique to each, with a study path for 2026.
CKA Networking Deep Dive: Services, Ingress, and Network Policies (2026)
Master the 20% networking domain on the CKA exam. Hands-on guide to Services (ClusterIP, NodePort, LoadBalancer), Ingress, Gateway API, DNS, and NetworkPolicy with copy-paste YAML and exam-ready patterns.
CK-X: The Free Open-Source Kubernetes Exam Simulator You've Been Waiting For
Discover CK-X, the free open-source Kubernetes certification exam simulator that runs real K8s clusters locally. Practice for CKA, CKAD, and CKS exams with realistic exam conditions.
CKA Exam Guide 2026: Everything You Need to Know
Complete guide to the CKA certification exam in 2026. Learn about exam format, domains, passing scores, and how to prepare.
Frequently Asked Questions
When will the CKNE exam be available?
CNCF introduced the CKNE at KubeCon + CloudNativeCon North America 2025, with the exam slated for 2026. The curriculum and domain weights are already published, so you can start preparing now and register on the Linux Foundation site once registration opens.
Is the CKNE exam performance-based or multiple choice?
The CKNE is a practical, performance-based exam — like the CKA and CKS, you complete hands-on tasks in a live environment rather than answering multiple-choice questions.
How much does the CKNE exam cost?
The CKNE is expected to be priced in line with other CNCF performance-based certifications — the CKA, CKAD, and CKS are currently $445 USD. Exam registrations from the Linux Foundation include one free retake.
Is CKNE the Kubernetes equivalent of CCNA?
That is how it is widely described in the cloud native community. Where the CCNA validates traditional network engineering, the CKNE validates networking on Kubernetes and cloud native platforms: CNI plugins, service networking, DNS, the Gateway API, network policy, and observability.
What tools and projects should I learn for the CKNE?
The exam is vendor-neutral and is expected to draw on cloud native networking projects such as Cilium, Calico, Flannel, and Istio. You should be fluent with the Gateway API, CoreDNS, Network Policies, and Linux networking tools like iptables, ip, and tcpdump — these appear explicitly in the published curriculum.
Should I take the CKA or CKNE first?
The CKA is the natural starting point: it validates broad cluster administration, including a Services & Networking domain that overlaps with the CKNE curriculum. If you already administer clusters day-to-day, going straight for the CKNE is reasonable. Network engineers coming from the traditional world may find the CKNE a more direct fit for their career path.
Are there prerequisites for the CKNE?
The CKNE has no formal prerequisites. As an intermediate-level certification, hands-on Kubernetes experience and a solid grasp of Linux networking fundamentals (IP routing, DNS, firewalls) are strongly recommended before attempting it.
Does Sailor.sh offer CKNE practice exams?
Yes — our CKNE Mock Exam Bundle includes five full-length, performance-based exams with 100+ networking scenarios in a real Kubernetes cluster, aligned with the official curriculum. Our CKA mock exam bundle also covers the overlapping Services & Networking domain hands-on.