Migrating Symantec Veritas Cluster Server to HP Serviceguard for Linux

Technical white paper | Migrating Symantec Veritas Cluster Server to HP Serviceguard for Linux

Figure 8. Target SG/LX cluster running the highly available Apache Web server

The migration procedure

Overview

This migration procedure can convert the existing VCS cluster to SG/LX cluster using the same nodes and heartbeat

network. The target SG/LX cluster can use a new shared disk as a cluster Lock LUN mechanism for membership arbitration.

The Apache web server configured in the service group: “apache_svcgrp” can be converted to an SG/LX package with the

name “apache_package” using the SG/LX contributed toolkit.

The sample Apache service group uses the following resource agents in the VCS cluster:

• Apache

• IP

• NIC

• LVM volume group

• LVM logical volume

• Mount

• Disk reservation

In this migration procedure, the same Apache application installation and configuration used in the VCS cluster is being used

in the SG/LX cluster. The Apache Web server documents (HTML files) kept in a shared storage is also used as is in the SG/LX

package. The Apache application is not reinstalled or reconfigured for this migration.

NOTE:

In case the application data in the VCS cluster is kept in a filesystem or volume manager not supported by SG/LX, you must

migrate the application data to a filesystem or volume manager supported by SG/LX.

Following are the steps to migrate a sample Apache service group from a VCS cluster to an SG/LX cluster:

• Plan SG/LX heartbeat network and membership arbitration

• Collect the resources information used by your VCS service group

• Back up the application and configuration data

• Install Serviceguard and Apache toolkit software, and prepare the nodes

• Create shared storage for application data