Enterprise Linux High Availability Clustering (GL645)

Код курсу

HK967S (GL645)

Тривалість

4 Днів, 32 Ак. Годин

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Опис курсу

Цілі

Вимоги

Програма курсу

Опис курсу

Course overview

This is an in-depth course that focuses on two key areas, Linux high availability (HA) clustering and HA storage administration. Storage is integral to many HA clusters to make use of clustered storage technologies to enable active/active configurations.
Over the course of many in-depth lab exercises, each student will assemble a realistic three-node Linux cluster utilizing best practices. Each node has three network interfaces and each student’s cluster has its own dedicated cluster VLAN.
The class contains a storage array for shared LUNs among the nodes. This enables students to perform very real world tasks in a real world setting, including multipathing, redundant ring communication, last man standing cluster, and shared storage scenarios.

Цілі

Objectives

Course topics include:

Cluster Architecture & Design,
Pacemaker,
Corosync,
Fencing,
Resource Management,
Advanced Resource Management,
Multipathing,
Cluster LVM,
Global File System

Вимоги

Prerequisites

This course requires an advanced knowledge of Linux system administration. These skills are taught in the H7091S “Enterprise Linux Systems Administration” and U8583S “Linux Fundamentals”.

Програма курсу

Course Outline

Module 1: Introduction to Clustering and Storage Management

Clustering Introduction
Cluster Building Blocks
Shared Storage
Hardware and Software Requirements
Network Considerations
Split Brain Prevention with Fencing
HA Components
Clustered Resources
Configuration Tools
Red Hat Cluster Stack Roadmap
Running Commands on Multiple Systems

Lab Tasks

Running Commands on Multiple Hosts
Prepare System for Clustering
Static Network Configuration

Module 2: Corosync and Quorum Management

Vocabulary
Network Topology
Ethernet Bonding
Communication Methods
IPv6 Considerations
Cluster Node Preparation
Enable and Configure pcsd
PCS & PCSD
Cluster Quorum
Advanced Quorum Techniques
Corosync
Corosync – Redundant Ring Protocol (RRP)
Corosync Security
Joining and Leaving the Cluster
Quorum Administration • Upgrading

Lab Tasks

Install and Configure PCSD
Setup a Two Node Cluster
Setup a Three Node Cluster with PCS
Totem RRP – PCS GUI

Module 3: STONITH and Fencing

Fencing Introduction
Node Level Fencing
Node Fencing: External
Node Fencing: Internal
Node Fencing: Pseudo
Resource Level Fencing
Fencing Architecture
STONITH Subsystem
Fencing Agents
Fencing Agents listing
Resource Spotlight: IPAddr2
STONITH Resources
Working With stonith_admin
Manual Fencing
Best Practices

Lab Tasks

Suicide Fencing with Storage Based Death
Fencing with fence_scsi

Module 4: Pacemaker Cluster Resource Manager

Cluster Architecture Revisited
Pacemaker Architecture
Pacemaker Cluster Information Base (CIB)
Resource Management Overview
Component Relationships
Resource Agents
Types of Resources
Resource Naming Conventions
Resource Specific Parameters/Options
Resource Meta Parameters/Options
Resource Agent Operations
Discover Resource Agents
Available Resource Agents
Add a Primative Resource
Resource Group Management
Resource Group Example
Resource Actions: Monitoring
Resource Administration
PCS vs. CRM_*

Lab Tasks

Simple Management with PCS-GUI
Using Resource Groups

Module 5: Advanced Resource Configuration

Resource Placement Basics
Resource Ordering
Location Constraints
Relocating Resources
Relocation on Failure
Resource Standard: Clones & Multi-State
Resource Operations
Troubleshooting
Cluster Maintenance

Lab Tasks

Setup a Web Farm
Using Constraints
Cluster Monitoring

Module 6: Storage Technologies

Remote Storage Overview
Remote Filesystem Protocols
Remote Block Device Protocols
Distributed Lock Manager
dlm_controld & dlm_tool
Block Devices and the Device Mapper
Managing Loopback Devices

Lab Tasks

Manipulating Block Devices

Module 7: iSCSI

iSCSI Architecture
iSCSI Target Implementations
iSCSI Target Node Preparation & targetcli
iSCSI Target Administration
iSCSI Target Defining Storage Objects
iSCSI Target LUN Administration
iSCSI Target Network Portal Configuration
iSCSI Target Security
iSCSI Target Examples
Open-iSCSI Initiator Implementation
iSCSI Initiator Discovery
iSCSI Initiator Node Administration
Mounting iSCSI Targets at Boot
iSCSI Multipathing Considerations

Lab Tasks

iSCSI Initiator Configuration

Module 8: Kernel Device Management

Managing Linux Device Files
Kernel Hardware Info – /sys/
/sys/ Structure
udev
I/O Elevators

Lab Tasks

Creating Custom UDEV Rules

Module 9: Device Mapper and Multipathing

SAN Multipathing
Multipath Configuration
Multipathing Best Practices

Lab Tasks

Multipath Configuration

Module 10: Advanced LVM & Cluster LVM

Logical Volume Management
Implementing LVM
Creating Logical Volumes
Activating LVM VGs
Exporting and Importing a VG
Examining LVM Components
Changing LVM Components
Advanced LVM Overview
Advanced LVM: Components & Object Tags
Advanced LVM: Automated Storage Tiering
Advanced LVM: Thin Provisioning
Advanced LVM: Striping & Mirroring
Advanced LVM: RAID Volumes
cLVM

Lab Tasks

Creating and Managing LVM Volumes
cLVM

Module 11: Global File System (GFS) 2

GFS2 Overview
GFS2 Capabilities
GFS2 Theory of Operation
GFS2 Configuration Prerequisites
Setting Up Cluster LVM
GFS2 Filesystem Creation & Mounting
GFS2 Filesystem Management
GFS2 Fencing Requirement

Lab Tasks

GFS2

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Enterprise Linux High Availability Clustering (GL645)

Код курсу:

HK967S (GL645)

Тривалість:

4 Днів, 32 Ак. Годин

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