Installation guide

You can populate the database of one lu ci instance from another lu ciinstance. That capability

provides a means of replicating a lu ci server instance and provides an efficient upgrade and testing

path. When you install an instance of lu ci, its database is empty. However, you can import part or all

of a lu ci database from an existing lu ci server when deploying a new lu ci server.

Each lu ci instance has one user at initial installation — admin. Only the admin user may add

systems to a lu ci server. Also, the admin user can create additional user accounts and determine

which users are allowed to access clusters and computers registered in the lu ci database. It is

possible to import users as a batch operation in a new lu ci server, just as it is possible to import

clusters and computers.

When a computer is added to a lu ci server to be administered, authentication is done once. No

authentication is necessary from then on (unless the certificate used is revoked by a CA). After that,

you can remotely configure and manage clusters and storage through the lu ci user interface. lu ci

and ricci communicate with each other via XML.

The following figures show sample displays of the three major lu ci tabs: h o meb ase, clu st er, and

st o rag e.

For more information about Co ng a, refer to Configuring and Managing a Red Hat Cluster and the online

help available with the lu ci server.

Fig u re 1.21. lu ci h omeb ase T ab

Red Hat Ent erprise Linux 5 Clust er Suit e Overview