RH436 – Red Hat High Availability Clustering

RH436 – Red Hat High Availability Clustering develops practical capability in high-availability Linux clustering using Pacemaker, Corosync, quorum, fencing, resources, constraints, shared storage, multipathing, GFS2, monitoring, and disaster recovery.

Learners progress through High-Availability Concepts, Pacemaker, Corosync, Quorum, and Cluster Setup; Fencing, Resources, Groups, Clones, Constraints, and Failover Control; Shared Storage, iSCSI, Multipathing, LVM, GFS2, and Locking; Monitoring, Maintenance, Troubleshooting, Split-Brain Prevention, and DR. Each stage connects Red Hat technology with implementation decisions, operational controls, troubleshooting, and reviewable evidence.

The learning journey follows an infrastructure team designing a resilient clustered service with controlled failover and shared storage and produces a practical high-availability cluster build document, failover test evidence, storage design, and recovery runbook for implementation and operational use.

What You Will Learn

• Validate availability requirements and cluster architecture against security, reliability, governance, and acceptance criteria.
• Compare Pacemaker, Corosync, membership, and quorum behavior alternatives and explain operational and technical trade-offs.
• Document fencing design and safe node isolation using repeatable commands, evidence, ownership, and handover notes.
• Improve resources, groups, clones, and placement constraints through monitoring, exception handling, automation, and review cycles.
• Map shared storage, multipathing, clustered LVM, and GFS2 across architecture, roles, dependencies, controls, and evidence.
• Configure controlled failover and service continuity testing with reproducible settings and validated prerequisites.
• Execute cluster monitoring and evidence-based troubleshooting and interpret outputs, events, logs, and system behavior.
• Diagnose split-brain prevention, recovery, and disaster planning through targeted checks, traces, and corrective testing.

SkillDynamo Training Approach

Training combines course-specific demonstrations, hands-on Red Hat exercises, scenario analysis, validation checklists, structured troubleshooting, and a final improvement plan for RH436 – Red Hat High Availability Clustering.