Linux High Availability Clustering


This course helps you to understand high availability clustering by providing a strong concept and hands-on experience with Pacemaker and Corosync components of Red Hat / CentOS Enterprise High Availability Cluster.

Lab Design : KVM based lab setup in this course module.

Subtitle is not added in this course module.

Course Content:


  • What is clustering & cluster types?
  • Advantages of Clustering Servers
  • Concepts and techniques
  • Resource and resource groups
  • Failover, Fencing, Shared Storage, Quorum
  • Cluster Architecture
  • Lab Setup using KVM Environment
  • Configuring a Basic Cluster
  • Configuring a fencing agent using KVM host mahcine
  • Troubleshooting fencing device

Managing Cluster Nodes

  • Starting & Stopping Cluster Services
  • Enabling & Disabling the Cluster Services
  • Adding & Removing A Cluster Node
  • The Standby & unstandby Nodes
  • Quorum Operations
  • Lab Session on quorum
  • Managing Quorum Calculations
  • Cluster Setup Switches1) wait_for_all2) auto_tie_breaker

Creating and Configuring Resources

  • Create and configure high-availability resources.
  • Creating a clustered Apache service
  • Managing Resources

Troubleshooting High-Availability Cluster

  • Inspect and configure cluster logging
  • Troubleshooting resource failures
  • Troubleshooting cluster network issues

Complex Resource Group

  • Configuring an Active/Passive NFS Resource Group
  • Lab Session

Managing Constraints

  • Types of constraints:
  • Order, Location & Colocation Constraint
  • Practice Lab Session

Two Node Cluster Issues

  • No room for node failure
  • Split Brain
  • Fence death/fence racing
  • The cluster does not start until both nodes have started.
  • Practice Lab Session

Managing iSCSI Initiators

  • iSCSI fundamentals
  • Configuring an iSCSI Server
  • Several types of backing Storage
  • block, fileio, pscsi & ramdisk
  • Creating iSCSI Target
  • Lab Session to create a block backstore from the targetcli shell

Managing High Availability Logical Volumes

  • Clustered LVM & HA-LVM
  • Lab Session to shared a disk (lun) to all cluster nodes
  • Practice Lab Session on HA-LVM

Managing Clustered Logical Volumes

  • Active/Active configuration of logical volumes
  • Distributed Lock Manager (DLM) for lock management
  • clvmd daemon
  • Practice Lab Session

Global File System 2 (GFS2)

  • GFS2 concepts
  • Creating a GFS2 formatted Cluster File Systems
  • Managing a GFS2 File System
  • Managing a GFS2 Resource in the cluster
  • Growing & Repairing a GFS2 File System

Who this course is for:

  • Linux High Availability Clustering course is aimed at senior system administrators responsible for maximizing resiliency though high availability clustering services


  • PC or Laptop with internet Connection
  • Red Hat Certified Engineer (RHCE) certification or equivalent experience.
  • CentOS 7, RHEL7 ISO Image
  • Vmware workstation

Last Updated 12/2019

Download Links

Direct Download

Linux High Availability (2.6 GB) | Mirror

Torrent Download

Linux High Availability Clustering.torrent (67 KB) | Mirror


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