Red Hat NETWORK SATELLITE SERVER 3.7 Installation Manual

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Red Hat NETWORK SATELLITE SERVER 3.7 Installation Manual Manual pdf 44 page image

40 Chapter 6. Importing and SynchronizingAfter running the preceding sample command, the population of the channel should be complete. Allof the packages should have been moved out of the repository; this can be verified with the com-mand cd /var/rhn-sat-import/; ls -alR | grep rpm. If all RPMs have been installed andmoved to their permanent locations, then this count will be zero, and the administrator may safelyremove the temporary repository (in this case, /var/rhn-sat-import/).6.3. SynchronizingAn update channel is only as useful as the freshness of the information in that channel. Since the RHNSatellite Server is designed to be a standalone environment, any update advisories published by RHNmust be manually imported and synchronized by the administrator of the RHN Satellite Server.During synchronization over the Internet, the RHN Satellite Synchronization Tool performs thefollowing 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 isspecified, in which case no connection is necessary. Refer to Section 6.3.2 Synchronizing Errataand Packages via Local Media for an explanation.2. Examines the export and identifies differences between the RHN Satellite Server data set andthe 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 channelNoteAll analysis is performed on the RHN Satellite Server; the central RHN Servers deliver only anexport of its channel information and remain ignorant of any details regarding the RHN SatelliteServer.3. After the analysis of the export data, any differences are imported into the RHN Satellite Serverdatabase. Please note that importing new packages may take variable lengths of time. For a largeupdate, an import can take many hours.The satellite-sync command can be used in two modes: via RHN and via local media.6.3.1. Synchronizing Errata and Packages Directly via RHNFor customers who want to sync data as frequently as possible and who can initiate connectionsoutside of their own environments, the satellite sync can be run over the Internet through SSL. This isthe default setting for the satellite sync script. For example:satellite-sync -c rhel-i386-as-3This connects to central Red Hat Network Servers and performs the process described above. Multiplechannels can be included by repeating the option. If no channels are specified, all channels on theSatellite will be refreshed.