Novell LINUX ENTERPRISE 11 - HIGH AVAILABILITY, Manual, Page: 31 / 298

2.4 Preparations
Prior to installation, execute the following preparatory steps:
• Configure hostname resolution and use static host information by by editing the
/etc/hosts
file on each server in the cluster. For more information, refer to
SUSE Linux Enterprise Server Administration Guide, chapter Basic Networking ,
section Configuring Hostname and DNS , available at
http://www.novell
.com/documentation
.
It is essential that members of the cluster are able to find each other by name. If
the names are not available, internal cluster communication will fail.
• Configure time synchronization by making cluster nodes synchronize to a time
server outside the cluster . For more information, refer to SUSE Linux Enterprise
Server Administration Guide, chapter Time Synchronization with NTP , available
at
http://www.novell.com/documentation
.
The cluster nodes will use the time server as their time synchronization source.
2.5 Overview: Installing and Setting
Up a Cluster
After the preparations are done, the following steps are necessary to install and set up
a cluster with SUSE® Linux Enterprise High Availability Extension:
1. Installing SUSE® Linux Enterprise Server 11 and SUSE® Linux Enterprise High
Availability Extension 11 as add-on on top of SUSE Linux Enterprise Server. For
detailed information, see Section 3.1, “Installing the High Availability Extension”
(page 23).
2. Configuring OpenAIS. For detailed information, see Section 3.2, “Initial Cluster
Setup” (page 24).
3. Starting OpenAIS and monitoring the cluster status. For detailed information, see
Section 3.3, “Bringing the Cluster Online” (page 27).
Getting Started 21