Linux High Availability Clustering | Udemy


Linux High Availability Clustering | Udemy
English | Size: 2.72 GB
Genre: eLearning

What you’ll learn
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

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:

Introduction

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 Switches

1) 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

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