Red Hat High Availability Clustering (RH436)

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About this Course

Red Hat® High Availability Clustering (RH436) provides intensive, hands-on experience with the Pacemaker component of the Red Hat Enterprise Linux High-Availability Add-On, and cluster storage components from the Resilient Storage Add-On, including Cluster Logical Volume Manager (CLVM), Red Hat Global File System 2 (GFS2), and Device-Mapper Multipath. Created for senior Linux® system administrators, this 4-day course has a strong emphasis on lab-based activities. At the end of the course, students will have learned to deploy and manage shared storage and server clusters that provide highly available network services to a mission-critical enterprise environment.

After attending the course, customers who meet the prerequisites for the Red Hat Enterprise High Availability Clustering course should be prepared to take the EX436 exam.

Audience Profile

  • Senior Linux system administrators responsible for maximizing resiliency though high availability clustering services and using fault tolerant shared storage technologies.
  • An RHCE interested in earning a Red Hat Certification of Expertise or an Red Hat Certified Architect (RHCA).

At Course Completion

Upon completing this course, students will be able to:

  • Install and Configure a Pacemaker-based high availability cluster
  • Create and Manage highly available services
  • Troubleshoot common cluster issues
  • Work with shared storage (iSCSI) and configure multipathing
  • Configure GFS2 filesystems


  • Red Hat Certified Engineer (RHCE) certification or equivalent experience

Course Outline

Course Introduction

Unit 1: Creating High Availability Clusters

  • Objective: Create and examine the architecture of a Pacemaker-based high-availability (HA) cluster.

Unit 2: Managing Cluster Nodes and Quorum

  • Objective: Explain cluster node membership and how quorum is used to control cluster operation.

Unit 3: Managing Fencing

  • Objective: Select and configure appropriate fencing devices to help correctly relocate resource groups after node failure.

Unit 4: Creating and Configuring Resource Groups

  • Objective: Create simple resource groups to provide high-availability services to clients.

Unit 5: Troubleshooting High Availability Clusters

  • Objective: dentify and troubleshoot cluster problems.

Unit 6: Controlling Complex Resource Groups

  • Objective: Control complex resource groups by using constraints.

Unit 7: Managing Two Node Clusters

  • Objective: Identify and work around two-node cluster issues.

Unit 8: Managing iSCSI Initiators

  • Objective: Manage iSCSI initiators for access to shared storage

Unit 9: Configuring Multipath Storage

  • Objective: Configure redundant storage access

Unit 10: Configuring LVM in Clusters

  • Objective: Manage clustered LVM

Unit 11: Managing GFS2 Cluster Filesystems

  • Objective: Create symmetric shared file systems

Unit 12: Eliminating Single Points of Failure

  • Objective: Eliminate Single-Points-Of-Failure to increase service availability

Unit 13: Comprehensive Review

  • Objective: Practice and demonstrate knowledge and skills learned in Red Hat High Availability Clustering.