High Availability Clustering

Coming soon. Course preview.

Understand how clustered Linux services stay available during failures.

EX436 RHEL High Availability Add-on

Before you begin

RHCSA/RHCE recommended, explicitly not required; RH436 or equivalent clustering experience and practical administration experience.

Planned course outline

1. Cluster formation

   • Manual/Ansible setup and quorum

2. Fencing assurance

   • Fence devices and node-to-node tests

3. Cluster evidence

   • Per-node logs and journald

4. Cluster health

   • Monitoring resources and alerts

5. Failover workloads

   • Resource groups, shared storage and virtual addresses

6. Placement and recovery policy

   • Execution constraints and failover behavior

7. Shared block devices

   • iSCSI, multipath, shared/HA LVM

8. Cluster filesystems

   • GFS2 creation, concurrent mounts, journals and growth

Lessons and labs are not available yet. This preview describes planned coverage.

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