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RH436 – Red Hat High Availability Clustering

  • Length 4 days
Course overview
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Why study 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, as well as 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 four-day course strongly emphasises lab-based activities. You’ll learn how to deploy and manage shared storage and server clusters that provide highly available network services to a mission-critical enterprise environment.This course also helps you prepare for the Red Hat Certified Specialist in High Availability Clustering exam (EX436).

This course is based on Red Hat Enterprise Linux 7.1.

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What you’ll learn

As a result of attending this course, students should be able to create, manage, and troubleshoot highly available network services and tightly-coupled cluster storage for business-critical applications.

Students should be able to demonstrate the following skills:

  • Improve application uptime by using high availability clustering

  • Manage storage in an high availability environment using iSCSI initiators, HA-LVM or CLVM as appropriate, and GFS2 cluster file systems

  • Implement strategies to identify single points of failure in high availability clusters and eliminate them

Red Hat at DDLS

Red Hat is the leading provider of open source, enterprise IT solutions. DDLS is proud to offer clients the ability to attend over 40 official Red Hat training courses through a resell agreement with Red Hat. Maximise the return on your Red Hat technology investment with lab-intensive, Instructor-Led Training run by Red Hat themselves. Alternatively, for those unable to attend training, log in and learn with Red Hat Online Learning.

Stay ahead of the technology curve

Don’t let your tech outpace the skills of your people

Quality instructors and content

Expert instructors with real world experience and the latest vendor- approved in-depth course content.

Partner-Preferred Supplier

Chosen and awarded by the world’s leading vendors as preferred training partner.

Ahead of the technology curve

No matter your chosen technologies or platforms, we can help you stay one step ahead.

Who is the course for?

  • Senior Linux system administrators responsible for maximizing resiliency through high-availability clustering services and using fault-tolerant shared storage technologies

Course subjects

Clusters and storage

  • Get an overview of storage and cluster technologies

Create high-availability clusters

  • Review and create the architecture of Pacemaker-based high-availability clusters

Nodes and quorum

  • Review cluster node membership and how quorum is used to control clusters


  • Understand fencing and fencing configuration

Resource groups

  • Create and configure simple resource groups to provide high-availability services to clients

Troubleshoot high-availability clusters

  • Identify and troubleshoot cluster problems

Complex resource groups

  • Control complex resource groups by using constraints

Two-node clusters

  • Identify and work around two-node clusters issues

ISCSI initiators

  • Manage iSCSI initiators for access to shared storage

Multipath Storage

  • Configure redundant storage access

Logical volume manager (LVM) clusters

  • Manage clustered LV

Global File System 2

  • Create symmetric shared file systems

Eliminate single points of failure

  • Eliminate single points of failure to increase service availability

Comprehensive review

  • Set up high-availability services and storage


For candidates who have not earned their RHCE, confirmation of the correct skill set knowledge can be obtained by passing the online skills assessment.


DDLS offers certification and training in Red Hat, JBoss and Ansible through our partnership with Red Hat. This arrangement requires DDLS to provide your details to Red Hat for course and exam registration purposes.

Terms & Conditions

The supply of this course by DDLS is governed by the booking terms and conditions. Please read the terms and conditions carefully before enrolling in this course, as enrolment in the course is conditional on acceptance of these terms and conditions.

Request Course Information

By submitting an enquiry, you agree to our privacy policy and receiving email and other forms of communication from us. You can opt-out at any time.