Red Hat ENTERPRISE LINUX AS 2.1 -, Руководство по установке

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Section 9.2:Logging Into the Piranha Configuration Tool 133
9 Configuring the LVS Routers with
Piranha Configuration Tool
The
Piranha Configuration Tool
provides a structured approach to creating the necessary configura-
tion file for a Piranha cluster —
/etc/sysconfig/ha/lvs.cf
. This chapter describes the basic
operation of the Piranha Configuration Tool and how to activate the cluster once configuration is
complete.
Important
The configuration file for the LVS cluster follows strict formatting rules. Us-
ing the
Piranha Configuration Tool
is the best way to prevent syntax errors
in the
lvs.cf
and therefore prevent software failures.
9.1 Necessary Software
The
piranha-gui
service must be running on the primary LVS router to use the Piranha Con-
figuration Tool
. To configure the cluster, you will minimally need a text-only Web browser, such as
links
. If you are accessing the LVS router from another machine, you will also need an
ssh
con-
nection 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 the LVS cluster.
9.2 Logging Into the Piranha Configuration Tool
When configuring an LVS cluster, 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 7.2, 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 ad-
dress for the server followed by
:3636
. Once the browser connects, you will see the screen shown
in Figure 9–1, The Welcome Panel.