Red Hat NETWORK - USER 3.0 Przewodnik Instalacji Pobierz pdf (Strona 69)

Using RHN DB Control

Backing up only these files and directories would require reinstalling the RHN Satellite ISO RPMs and

reregistering the Satellite. In addition, Red Hat packages would need to be resynchronized using the

satellite-sync tool. Finally, you would have to reinstall the /root/ssl-build/\ rhn-org-

httpd-ssl-key-pair-MACHINE_NAME-VER-REL.noarch.rpm.

Another method would be to back up all of the files and directories mentioned above but reinstall the

RHN Satellite without reregistering it. During the installation, cancel or skip the RHN registration and

SSL certificate generation sections.

The final and most comprehensive method would be to back up the entire machine. This would save

time in downloading and reinstalling but would require additional disk space and back up time.

Note

Regardless of the back-up method used, when you restore the Satellite from a back-up, you must

run the following command to schedule the recreation of search indexes the next time the rhn-

search service is started:

/etc/init.d/rhn-search cleanindex

8.4. Using RHN DB Control

RHN Satellite with Embedded Database requires a utility for managing that database. Red Hat

provides just such a tool: RHN DB Control. This command line utility allows you to do everything from

make, verify, and restore backups to obtain database status and restart it when necessary. You must

be the oracle user to invoke RHN DB Control. To begin, switch to the oracle user:

su - oracle

Next, issue the following command:

db-control option

8.4.1. DB Control Options

RHN DB Control offers many command line options. To use them, as oracle insert the option and the

appropriate value, if needed, after the db-control command.

Table 8.1. RHN DB Control Options

Option Description

help Lists these db-control options with additional

details.

backup DIRNAME Backs up the database to the directory specified.

examine DIRNAME Examines the contents of a backup directory. Returns

the timestamp of backup creation and reports on its

contents.

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Red Hat NETWORK - USER 3.0 Przewodnik Instalacji Strona 69