Installation guide

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. T his 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
Configurat ion Tool. T o 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
Configurat ion Tool. T o do this,verify that the piranha-gui service is running and an administrative
password has been set, as described in Section 2.2, “Setting a Password for the Piranha
Configurat ion 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. Configuring the LVS Routers with Piranha Configuration Tool
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