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Linux High Availability Clustering – Web Courses

Linux High Availability Clustering - Web Courses
Linux High Availability Clustering - Web Courses

Linux High Availability Clustering – Web Courses

Design and deploy a high availability cluster to provide active/passive or active/active services using HA Pacemaker

What you’ll learn

Linux High Availability Clustering – Web Courses

  • Students should understand HA cluster concepts and how to manage different nodes, start/stop services
  • Creating High-Availability Clusters
  • Managing Cluster Nodes and Quorum
  • Managing Fencing
  • Creating and Configuring Resources
  • Managing Constraints
  • About Order, Location & Colocation Constraints
  • Troubleshooting High-Availability Clusters
  • Controlling Complex Resource groups
  • Managing Two Node Clusters
  • Concept about Split Brain, Fence death/fence racing
  • Managing iSCSI Initiators
  • Configuring & Managing High-Availability Logical Volumes
  • Managing Clustered Logical Volumes
  • GFS2 Concepts
  • Creating a GFS2 formatted Cluster File Systems
  • Growing & Repairing a GFS2 File System

Requirements

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

Description

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 set up in this course module.

The subtitle is not added in this course module.

Course Content:

Introduction

  • What are 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 a KVM host machine
  • Troubleshooting fencing device

Managing Cluster Nodes

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

    2) 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
  • Last updated 12/2019

Linux High Availability Clustering – Web Courses

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