Red Hat Cluster Suite, Manual

Page: 115 / 188

Chapter 8. Initial LVS Configuration 99
If the password is changed during an active Piranha Configuration Tool session, the
administrator is prompted to provide the new password.
8.3. Starting the Piranha Configuration Tool Service
After you have set the password for the
Piranha Configuration Tool
, start or restart the
piranha-gui
service located in
/etc/rc.d/init.d/piranha-gui
. To do this, type
the following command as root:
/sbin/service piranha-gui start
or
/sbin/service piranha-gui restart
Issuing this command starts a private session of the Apache HTTP Server by calling the
symbolic link
/usr/sbin/piranha_gui -> /usr/sbin/httpd
. For security reasons,
the
piranha-gui
version of
httpd
runs as the piranha user in a separate process. The
fact that
piranha-gui
leverages the
httpd
service means that:
1. The Apache HTTP Server must be installed on the system.
2. Stopping or restarting the Apache HTTP Server via the
service
command stops the
piranha-gui
service.
Warning
If the command
/sbin/service httpd stop
or
/sbin/service httpd restart
is is-
sued on an LVS router, you must start the
piranha-gui
service by issuing the following
command:
/sbin/service piranha-gui start
The
piranha-gui
service is all that is necessary to begin configuring an LVS cluster.
However, if you are configuring the cluster remotely, the
sshd
service is also required. You
do not need to start the
pulse
service until configuration using the Piranha Configuration
Tool
is complete. See Section 10.8 Starting the Cluster for information on starting the
pulse
service.