Novell PLATESPIN ORCHESTRATE 2.0.2 - HIGH AVAILABILITY CONFIGURATION GUIDE... Manuale utente

Novell®

www.novell.com

novdocx (en) 13 May 2009

AUTHORIZED DOCUMENTATION

PlateSpin Orchestrate 2.0 High Availability Configuration Guide

PlateSpin

Orchestrate

2.0.2

June 17, 2009

High Availability Configuration Guide

novdocx (en) 13 May 2009

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4PlateSpin Orchestrate 2.0 High Availability Configuration Guide

novdocx (en) 13 May 2009

Contents 5

Contents

novdocx (en) 13 May 2009

About This Guide 7

1 Preparing PlateSpin Orchestrate for High Availability Support 9

1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.2 Installing PlateSpin Orchestrate to a High Availability Environment . . . . . . . . . . . . . . . . . . . . 10

1.2.1 Meeting the Prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

1.2.2 Installing the High Availability Pattern for SLES 10 . . . . . . . . . . . . . . . . . . . . . . . . . . 12

1.2.3 Configuring Nodes with Time Synchronization and Installing Heartbeat 2 to Each

Node . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.2.4 Setting Up OCFS2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.2.5 Installing and Configuring PlateSpin Orchestrate on the First Clustered Node . . . . . 15

1.2.6 Running the High Availability Configuration Script . . . . . . . . . . . . . . . . . . . . . . . . . . 28

1.2.7 Installing and Configuring Orchestrate Server Packages on Other Nodes in the Cluster

for High Availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

1.2.8 Creating the Cluster Resource Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

1.2.9 Testing the Failover of the PlateSpin Orchestrate Server in a Cluster . . . . . . . . . . . 31

1.2.10 Installing and Configuring other PlateSpin Orchestrate Components to the High

Availability Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

2 PlateSpin Orchestrate Failover Behaviors in a High Availability Environment 33

2.1 Use Case 1: Orchestrate Server Failover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

2.2 Use Case 2: Agent Behavior at Orchestrate Server Failover and Failback . . . . . . . . . . . . . . . 33

2.3 Use Case 3: VM Builder Behavior at Orchestrate Server Failover and Failback . . . . . . . . . . . 33

2.4 Use Case 4: Monitoring Behavior at Orchestrate Server Failover and Failback . . . . . . . . . . . 34

3 High Availability Best Practices 35

3.1 Jobs Using scheduleSweep() Might Need a Start Constraint . . . . . . . . . . . . . . . . . . . . . . . . . 35

6PlateSpin Orchestrate 2.0 High Availability Configuration Guide

novdocx (en) 13 May 2009

About This Guide 7

novdocx (en) 13 May 2009

About This Guide

This High Availability Configuration Guide provides the information for installing and configuring

PlateSpin®Orchestrate 2.0 from Novell®in a high availability environment. The guide provides

information about the components and configuration steps necessary for preparing this environment,

including instructions for configuring the PlateSpin Orchestrate Server in a cluster. The guide also

provides some information regarding the behaviors you can expect from PlateSpin Orchestrate in

various failover scenarios. The guide is organized as follows:

Chapter 1, “Preparing PlateSpin Orchestrate for High Availability Support,” on page 9

Chapter 2, “PlateSpin Orchestrate Failover Behaviors in a High Availability Environment,” on

page 33

Chapter 3, “High Availability Best Practices,” on page 35

Audience

The contents of this guide are of interest to the following individuals:

VM Administrator: A PlateSpin Orchestrate virtual machine (VM) administrator manages the life

cycle of the VMs in the enterprise, including creating, starting, stopping, migrating, and deleting

VMs. For more information about the tasks and tools used by the VM administrator, see the

PlateSpin Orchestrate 2.0 VM Client Guide and Reference.

Orchestrate Administrator: A PlateSpin Orchestrate Administrator deploys jobs, manages users,

and monitors distributed computing resources. Administrators can also create and set policies for

automating the usage of these computing resources. For more information about the tasks and tools

used by the Orchestrate Administrator, see the PlateSpin Orchestrate 2.0 Administrator Reference.

User: The end user of PlateSpin Orchestrate, also called a “Job Manager,” runs and manages jobs

that have been created by a Job Developer and deployed by the administrator. It is also possible that

the end user could be a developer who has created applications to run on distributed computing

resources. For more information about the tasks and tools used by the Job Manager, see the

PlateSpin Orchestrate 2.0 Server Portal Reference.

Job Developer: The developer controsl a self-contained development system where he or she

creates jobs and policies and tests them in a laboratory environment. When the jobs are tested and

proven to function as intended, the developer delivers them to the PlateSpin Orchestrate

administrator. For more information about the tasks and tools used by the job developer, see the

PlateSpin Orchestrate 2.0 Developer Guide and Reference.

Prerequisite Skills

As data center managers or IT or operations administrators, it is assumed that users of the product

have the following background:

General understanding of network operating environments and systems architecture.

Knowledge of basic Linux* shell commands and text editors.

8PlateSpin Orchestrate 2.0 High Availability Configuration Guide

novdocx (en) 13 May 2009

Feedback

We want to hear your comments and suggestions about this manual and the other documentation

included with this product. Please use the User Comments feature at the bottom of each page of the

online documentation, or go to www.novell.com/documentation/feedback.html (http://

www.novell.com/documentation/feedback.html) and enter your comments there.

Documentation Updates

For the most recent updates of this High Availability Guide, visit the PlateSpin Orchestrate 2. Web

site (http://www.novell.com/documentation/pso_orchestrate20/).

Documentation Conventions

In Novell documentation, a greater-than symbol (>) is used to separate actions within a step and

items in a cross-reference path.

A trademark symbol (®, TM, etc.) denotes a Novell trademark. An asterisk (*) denotes a third-party

trademark.

When a single pathname can be written with a backslash for some platforms or a forward slash for

other platforms, the pathname is presented with a backslash. Users of platforms that require a

forward slash, such as Linux or UNIX*, should use forward slashes as required by your software.

Preparing PlateSpin Orchestrate for High Availability Support

novdocx (en) 13 May 2009

Preparing PlateSpin Orchestrate

for High Availability Support

Ensuring maximum service-level availability and data protection is paramount to enterprise IT

infrastructure. Automated failure detection and recovery prevents downtime, and reduces the

financial and operational impact of outages to the business. Highly available infrastructure is a key

requirement for IT decision makers.

The PlateSpin®Orchestrate Server from Novell®is a critical component of your enterprise

infrastructure. It continuously monitors and manages physical servers and virtual machines (VMs),

and provides high availability for virtual machines by automatically restarting them on alternate

physical servers if the server they are running on becomes unavailable because of a planned or

unplanned outage. Therefore, the Orchestrate Server itself must be highly available.

In PlateSpin Orchestrate, high availability services are provided by a specialized set of applications

that run on SUSE®Linux Enterprise Server (SLES10). Heartbeat 2 is high availability clustering

software that provides multinode failover and service-level health monitoring for Linux-based

services. Heartbeat 2 monitors both physical servers and the services running on them, and

automatically restarts services if they fail.

This guide describes how to configure PlateSpin Orchestrate in a Heartbeat 2 cluster and how to

provide both service-level restart for the Orchestrate Server and failover among the physical servers

of a Linux cluster to ensure that PlateSpin Orchestrate remains available and responsive to the

infrastructure that it manages.

This section includes the following information:

Section 1.1, “Overview,” on page 9

Section 1.2, “Installing PlateSpin Orchestrate to a High Availability Environment,” on page 10

1.1 Overview

The following figure illustrates how PlateSpin Orchestrate is configured for use in a high

availability environment.

10 PlateSpin Orchestrate 2.0 High Availability Configuration Guide

novdocx (en) 13 May 2009

Figure 1-1 The Oirchestrate Server in a Clustered, High Availability Environment

1.2 Installing PlateSpin Orchestrate to a High

Availability Environment

This section includes information to help you install PlateSpin Orchestrate Server components in a

high availability environment. The sequence below is the supported method for configuring this

environment.

1. Section 1.2.1, “Meeting the Prerequisites,” on page 11

2. Section 1.2.2, “Installing the High Availability Pattern for SLES 10,” on page 12

3. Section 1.2.3, “Configuring Nodes with Time Synchronization and Installing Heartbeat 2 to

Each Node,” on page 13

4. Section 1.2.4, “Setting Up OCFS2,” on page 14

5. Section 1.2.5, “Installing and Configuring PlateSpin Orchestrate on the First Clustered Node,”

on page 15

6. Section 1.2.6, “Running the High Availability Configuration Script,” on page 28

7. Section 1.2.8, “Creating the Cluster Resource Group,” on page 29

8. Section 1.2.7, “Installing and Configuring Orchestrate Server Packages on Other Nodes in the

Cluster for High Availability,” on page 28

9. Section 1.2.9, “Testing the Failover of the PlateSpin Orchestrate Server in a Cluster,” on

page 31

10. Section 1.2.10, “Installing and Configuring other PlateSpin Orchestrate Components to the

High Availability Grid,” on page 31

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