Kubernetes High Availability Mastery: Hands-On kubeadm HA
Published 12/2025
Duration: 2h 21m | .MP4 1920x1080 30fps(r) | AAC, 44100Hz, 2ch | 1.90 GB
Genre: eLearning | Language: English
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 Hero
Are 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 decisions
Your 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 capability
What 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 mode
Video 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 readiness
Video 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 formation
Video 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 architecture
Video 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 Ready
Video 6:Adding Worker Nodes
→ Join worker01 to cluster
→ Join worker02 to cluster
→ Add worker role labels
→ Verify pod distribution across workers
→ Confirm complete cluster topology
Video 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 restoration
Video 8:etcd Backup and Disaster Recovery
→ Install etcdctl and etcdutl tools
→ Create complete etcd snapshot
→ Verify snapshot integrity
→ Understand backup strategy
→ Implement production backup procedures
Technical 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 each
Who 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 required
Enroll 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
More Info
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