July 2004 Page 10 Dell Enterprise Product Group
Figure 2 : Managing Systems with the RHN Satellite Server GUI
Custom Channels
In addition to the default channels, custom channels can be added to the Satellite Server.
Custom channels can contain packages that are not standard Red Hat packages, but they
must be in the RPM format. If the software to be distributed and managed is not currently
an RPM, then the rpmbuild command can be used to create an RPM. Several third-party
software packages are already offered as RPMs, so in many cases administrators will not be
required to build one.
In the Dell lab, many of the servers are connected to a Dell/EMC storage area network
(SAN). Every system attached to the SAN must have EMC® Navisphere® Agent software
installed. This agent allows for communication between the Dell/EMC storage arrays and
the server. A custom channel was created to provide the Navisphere Agent to the SAN-
connected servers.
The default channels are known as parent channels; any custom channels that are created
must be a child channel of one of the parent channels. In the Dell lab, a child channel called
naviagent was created for the Red Hat Enterprise Linux AS 2.1 channel through the
Manage Software Channels page of the Satellite Server administration tool. After clicking
the Create New Channel button, the Dell team selected the parent channel name.
Navisphere Agent was specified as the channel name and Naviagent as the channel label.
To upload an RPM into a custom channel, administrators must use the rhnpush
command. The Dell team downloaded the most recent Navisphere Agent RPM from EMC
to the Satellite Server and used the following command to upload it into the Naviagent
channel:
rhnpush –c naviagent –nosig –server http://<satelite_server_name>/APP naviagent-
6.4.0.5.0-1.i386.rpm
The –nosig option was used because this RPM was not signed with a security key.
Multiple packages can be uploaded simultaneously simply by listing them at the end of the
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