Synchronizing - Red Hat NETWORK SATELLITE 5.2 Installation Manual

Chapter 6. Importing and Synchronizing
-c channel-label-2 \
--mount-point /var/rhn-sat-import
This conducts the following tasks in this order:
1.
Populating the tables describing common features for channels (channel families). This can also be
accomplished individually by passing the --step=channel-families option to satellite-
sync.
2.
Creating a particular channel in the database and importing the metadata describing the channel.
Individually, use the --step=channels option.
3.
Moving the RPM packages from the temporary repository into their final location. Individually, use
the --step=rpms option.
4.
Parsing the header metadata for each package in the channel, uploading the package data, and
associating it with the channel. Individually, use the --step=packages option.
5.
Identifying Errata associated with the packages and including them in the repository. Individually,
use the --step=errata option.
After running the preceding sample command, the population of the channel should be complete. All
of the packages should have been moved out of the repository; this can be verified with the command
cd /var/rhn-sat-import/; ls -alR | grep rpm. If all RPMs have been installed and moved
to their permanent locations, then this count will be zero, and the administrator may safely remove the
temporary repository (in this case, /var/rhn-sat-import/).

6.3. Synchronizing

An update channel is only as useful as the freshness of the information in that channel. Since the RHN
Satellite Server is designed to be a standalone environment, any update advisories published by RHN
must be manually imported and synchronized by the administrator of the RHN Satellite Server.
During synchronization over the Internet, the RHN Satellite Synchronization Tool performs the
following steps:
1. Connects over SSL to central RHN Servers, authenticates itself as an RHN Satellite Server, and
triggers an export of RHN data — unless a local mount point for RHN-exported data is specified,
in which case no connection is necessary. Refer to
Packages via Local Media"
2. Examines the export and identifies differences between the RHN Satellite Server data set and the
exported RHN data set. For a particular channel, the following information is analyzed:
• Channel metadata
• Metadata of all packages in that channel
• Metadata for all Errata that affect that channel
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for an explanation.
Section 6.3.2, "Synchronizing Errata and