Configuring The Lvs Routers With Piranha Configuration Tool; Necessary Software; Logging Into The Piranha Configuration Tool - Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION Manual

Chapter 4.
Configuring the LVS Routers with
Piranha Configuration Tool
The Piranha Configuration Tool provides a structured approach to creating the necessary
configuration file for LVS — /etc/sysconfig/ha/lvs.cf. This chapter describes the basic
operation of the Piranha Configuration Tool and how to activate LVS once configuration is complete.
Important
The configuration file for LVS follows strict formatting rules. Using the Piranha
Configuration Tool is the best way to prevent syntax errors in the lvs.cf and therefore
prevent software failures.

4.1. Necessary Software

The piranha-gui service must be running on the primary LVS router to use the Piranha
Configuration Tool. To configure LVS, you minimally need a text-only Web browser, such as links.
If you are accessing the LVS router from another machine, you also need an ssh connection to the
primary LVS router as the root user.
While configuring the primary LVS router it is a good idea to keep a concurrent ssh connection in
a terminal window. This connection provides a secure way to restart pulse and other services,
configure network packet filters, and monitor /var/log/messages during trouble shooting.
The next four sections walk through each of the configuration pages of the Piranha Configuration
Tool and give instructions on using it to set up LVS.

4.2. Logging Into the Piranha Configuration Tool

When configuring LVS, you should always begin by configuring the primary router with the
Piranha Configuration Tool. To do this,verify that the piranha-gui service is running and an
administrative password has been set, as described in
Piranha Configuration
If you are accessing the machine locally, you can open http://localhost:3636 in a Web browser
to access the Piranha Configuration Tool. Otherwise, type in the hostname or real IP address for the
server followed by :3636. Once the browser connects, you will see the screen shown in
"The Welcome Panel".
Tool".
Section 2.2, "Setting a Password for the
Figure 4.1,
31