Kubernetes High Availability Mastery: Hands-On kubeadm HA

Build Production-Grade HA Clusters: 3 Control Planes, HAProxy, etcd, Cilium CNI & Real Failover Testing[2025]

What you’ll learn
Build a production-grade 6-node Kubernetes High Availability cluster from scratch using kubeadm
Configure HAProxy load balancer to distribute Kubernetes API traffic across multiple control planes
Set up centralized DNS server (BIND9) for efficient cluster name resolution
Implement LVM storage strategy for Kubernetes components with future expansion capability
Install and configure containerd runtime with systemd cgroup driver for Kubernetes v1.32
Deploy Cilium CNI with eBPF technology for advanced pod networking
Configure three control plane nodes with etcd cluster achieving quorum (3/3)
Understand etcd Raft consensus protocol and how it maintains cluster state

Requirements
Basic understanding of Kubernetes concepts (pods, services, deployments, namespaces)
Linux command line proficiency (Ubuntu/Debian environment preferred)
Basic networking knowledge (TCP/IP, DNS concepts, load balancing fundamentals)

Description
Master Production-Grade Kubernetes High Availability Architecture from Zero to HeroAre you tired of toy Kubernetes setups that don’t reflect real production environments? Ready to build enterprise-grade clusters that can survive node failures without downtime?This comprehensive hands-on course takes you through building a complete 6-node Kubernetes High Availability cluster using kubeadm – the same architecture used by Fortune 500 companies.What Makes This Course Different?✓ Real Production Architecture: Build a true HA cluster with 3 control planes, 2 workers, and HAProxy load balancer✓ Complete Infrastructure Setup: Configure centralized DNS (BIND9), load balancing, and LVM storage from scratch✓ Every Command Shown: Watch real terminal sessions with actual outputs – no skipped steps✓ Failover Testing: Intentionally break the cluster and watch it survive – prove your HA works!✓ Enterprise Best Practices: Learn why professionals make specific architectural decisionsYour Complete 6-Node Cluster:- 3 Control Plane nodes (cp01, cp02, cp03) – Full redundancy- 2 Worker nodes (worker01, worker02) – Application workloads- 1 HAProxy node – Load balancing + DNS server- etcd cluster (Quorum 3/3) – Distributed data store- Cilium CNI with eBPF – Advanced networking- Complete failover capabilityWhat You’ll Build (8 Hands-On Videos):Video 1: Architecture Deep Dive→ Understand HA Kubernetes architecture with detailed diagrams→ Learn why centralized DNS eliminates /etc/hosts maintenance→ Discover LVM storage strategy for future expansion→ See how all components interact in HA modeVideo 2: Infrastructure Foundation→ Install and configure BIND9 DNS server→ Setup HAProxy for API load balancing→ Configure health checks and statistics interface→ Test DNS resolution and load balancer readinessVideo 3: Node Preparation (All 5 Kubernetes Nodes)→ Configure DNS resolution on all nodes→ Setup LVM with dedicated Kubernetes storage→ Disable swap and configure kernel parameters→ Install containerd, kubeadm, kubelet, kubectl→ Prepare nodes for cluster formationVideo 4: Control Plane Cluster Initialization→ Create kubeadm HA configuration file→ Initialize first control plane (cp01)→ Join second control plane (cp02)→ Join third control plane (cp03)→ Verify etcd quorum (3/3 members)→ Optimize kubelet for HA architectureVideo 5: Cilium CNI Deployment→ Install Helm 3 package manager→ Add Cilium Helm repository→ Deploy Cilium with complete configuration→ Configure IPAM and networking→ Verify all nodes become ReadyVideo 6: Adding Worker Nodes→ Join worker01 to cluster→ Join worker02 to cluster→ Add worker role labels→ Verify pod distribution across workers→ Confirm complete cluster topologyVideo 7: High Availability Failover Testing→ Deploy test application across workers→ Simulate control plane failure→ Observe HAProxy automatic failover→ Verify cluster remains operational→ Test application availability during outage→ Recover failed node→ Validate cluster health restorationVideo 8: etcd Backup and Disaster Recovery→ Install etcdctl and etcdutl tools→ Create complete etcd snapshot→ Verify snapshot integrity→ Understand backup strategy→ Implement production backup proceduresTechnical Environment:- Kubernetes v1.32.11 (latest stable)- Ubuntu 22.04 LTS- containerd 1.7.28- Cilium 1.16.1 (eBPF networking)- HAProxy 2.4+- BIND9 DNS- Helm 3.19+- Node specs: 4 vCPU, 4GB RAM eachWho Should Take This Course?✓ DevOps Engineers building production Kubernetes infrastructure✓ System Administrators moving to container orchestration✓ Platform Engineers responsible for Kubernetes clusters✓ Site Reliability Engineers (SREs) ensuring high availability✓ Cloud Architects designing resilient systems✓ Anyone preparing for CKA (Certified Kubernetes Administrator)Prerequisites:- Basic Kubernetes knowledge (pods, services, deployments)- Linux command line experience (Ubuntu/Debian)- Basic networking concepts (TCP/IP, DNS, load balancing)- Access to 6 VMs (4GB RAM, 2 vCPU each) or cloud resources- Docker/container familiarity helpful but not requiredEnroll Now and Master Production Kubernetes HA!Build the skills companies are desperately seeking. Stop deploying fragile single-master clusters. Start building enterprise-grade, highly available Kubernetes infrastructure today!

Who this course is for
DevOps Engineers building and managing production Kubernetes infrastructure
System Administrators transitioning from traditional infrastructure to container orchestration
Platform Engineers responsible for designing and maintaining Kubernetes platforms
Site Reliability Engineers (SREs) implementing high availability and disaster recovery
IT Professionals preparing for Certified Kubernetes Administrator (CKA) certification
Technical Leads evaluating Kubernetes for enterprise adoption

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