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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

/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 Conﬁgu-

ration Tool is complete. See Section 10.8 Starting the Cluster for information on starting

the pulse service.

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Red Hat CLUSTER SUITE 4.7 DM MULTIPATH Guía de instalación Pagina 115