Installation guide

Initial LVS Configuration
After installing Red Hat Enterprise Linux, you must take some basic steps to set up both the
LVS routers and the real servers. This chapter covers these initial steps in detail.
Note
The LVS router node that becomes the active node once LVS is started is also
referred to as the primary node. When configuring LVS, use the Piranha
Configuration Tool on the primary node.
1. Configuring Services on the LVS Routers
The Red Hat Enterprise Linux installation program installs all of the components needed to set
up LVS, but the appropriate services must be activated before configuring LVS. For both LVS
routers, set the appropriate services to start at boot time. There are three primary tools available
for setting services to activate at boot time under Red Hat Enterprise Linux: the command line
program chkconfig, the ncurses-based program ntsysv, and the graphical Services
Configuration Tool. All of these tools require root access.
Tip
To attain root access, open a shell prompt and use the su - command followed
by the root password. For example:
$ su - root password
On the LVS routers, there are three services which need to be set to activate at boot time:
• The piranha-gui service (primary node only)
• The pulse service
• The sshd service
If you are clustering multi-port services or using firewall marks, you must also enable the
iptables service.
It is best to set these services to activate in both runlevel 3 and runlevel 5. To accomplish this
using chkconfig, type the following command for each service:
Chapter 2.
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