Kubernetes Training for Infrastructure Engineers

Kubernetes training for infrastructure engineers prepares you to administer production clusters. You already manage Linux servers, storage, and networks. Kubernetes is becoming the foundation of modern infrastructure.

TL;DR: The CKA path for Infrastructure Engineers covers cluster installation, security, and troubleshooting. According to the CNCF Project Journey Report, 71% of Fortune 100 companies use Kubernetes. CKA certification validates these skills.

Check the Complete Kubernetes Training Guide for an overview.

Why is Kubernetes infrastructure training strategic?

Kubernetes transforms infrastructure management. Your traditional skills (Linux, networking, storage) remain essential but apply differently in a cloud-native context.

According to the CNCF Annual Survey 2025, 82% of organizations using containers run Kubernetes in production, up from 66% in 2023.

Key takeaway: Kubernetes with 74,680+ contributors is the 2nd largest open source project after Linux.

Impact on infrastructure salaries

Kubernetes skills increase compensation:

What's the Kubernetes infrastructure training path?

The Infrastructure Engineer path is structured in two levels.

Level 1: Kubernetes Fundamentals

The Kubernetes Fundamentals 1-day path introduces:

• Control plane and worker nodes architecture
• Pods, Deployments, Services
• kubectl and API interaction
• First deployments

Level 2: Cluster Administration (CKA)

The LFS458 Kubernetes Administration training over 4 days prepares for CKA. This is the main path for Infrastructure Engineers.

The Kubernetes cluster administration program covers:

Installation and configuration

# Cluster initialization with kubeadm
kubeadm init --pod-network-cidr=10.244.0.0/16
kubectl apply -f https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml
kubeadm join <control-plane>:6443 --token <token>

Storage management

• PersistentVolumes and PersistentVolumeClaims
• StorageClasses and dynamic provisioning
• CSI drivers

Cluster networking

• CNI plugins (Calico, Flannel, Cilium)
• Services: ClusterIP, NodePort, LoadBalancer
• Ingress controllers

Security

• RBAC: Roles, ClusterRoles, Bindings
• ServiceAccounts and tokens
• Network Policies

What skills does CKA certification validate?

According to the Linux Foundation FAQ, CKA evaluates:

Exam format:

• Duration: 2 hours
• Required score: 66%
• Validity: 2 years
• Format: practical exercises on a real cluster

Check Kubernetes CKA CKAD CKS certifications for more details. Kubernetes deployment and production complements this path.

Key takeaway: CKA is 100% practical: you'll work on a real cluster for 2 hours.

How to prepare for the CKA exam?

Practice on a real environment. The CKA exam is 100% practical.

Essential commands to master

# Context and configuration
kubectl config get-contexts
kubectl config use-context <context>

# Pod troubleshooting
kubectl describe pod <pod>
kubectl logs <pod> --previous
kubectl exec -it <pod> -- sh

# Cluster management
kubectl get nodes -o wide
kubectl drain <node> --ignore-daemonsets
kubectl uncordon <node>

# etcd backup
ETCDCTL_API=3 etcdctl snapshot save /backup/etcd-snapshot.db

Practice environments

The exam includes access to killer.sh, a simulator with questions similar to the real exam.

Kubernetes monitoring and troubleshooting reinforces troubleshooting skills.

What prerequisites for infrastructure training?

Validate these skills before starting:

Docker containerization best practices consolidate container foundations.

Key takeaway: Docker is an essential prerequisite: master images and containers before diving into Kubernetes.

What's next after CKA?

After CKA, two paths are available:

Option 1: CKS (Security)

Kubernetes security and the LFS460 training prepare for CKS:

• Supply chain security
• Cluster hardening
• Network policies
• Runtime security

Option 2: Managed cloud specialization

• Amazon EKS
• Google GKE
• Azure AKS

Take action: get your CKA

With 71% of Fortune 100 using Kubernetes and senior salaries at $204,500/year, CKA certification validates your infrastructure expertise. Check tutorials and practical guides and comparisons and alternatives to go deeper.

SFEIR Institute training:

• Kubernetes Fundamentals: 1 day, solid foundations
• LFS458 Kubernetes Administration: 4 days, CKA preparation
• LFS460 Kubernetes Security: 4 days, CKS preparation

SFEIR group training entities (SFEIR SAS, SFEIR-EST) are Qualiopi certified. Contact your HR department for funding options available in your region.

Request your personalized quote.