Installation guide

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.
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.
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 Section 2, “Setting a Password for the
Piranha Configuration Tool”.
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 Figure 4.1, “The Welcome Panel”.
Chapter 4.
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