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Chapter 2. The rhn_register Client

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Red Hat Enterprise Linux 5 features an application called rhn_register. This application works with the yum-based RHN Hosted and RHN Satellite client called Package Updater (or pup)that replaces up2date. For more information about pup, refer to Chapter 3, Package Updater.
The rhn_register application normally runs as part of the firstboot configuration process just after installation. The first time a newly-installed Red Hat Enterprise Linux 5 system is booted, firstboot uses rhn_register to register your system with RHN.

2.1. Using rhn_register

If you should ever need to re-register your system at a later time (or you chose not to register during firstboot), you can use rhn_register to do so. You can execute the command rhn_register from the command line as root. If you have never registered, you can start rhn_register by selecting Applications (the main menu on the panel) ⇒ System Tools ⇒ Package Updater. (You will be asked to enter the root password.) The Package Updater, when run on a system that has not yet been registered, triggers rhn_register if there is no /etc/sysconfig/rhn/systemid file on the system.
If you have already registered before and /etc/sysconfig/rhn/systemid exists on the system, rhn_register first asks if you are sure that you would like to register again. Doing so may create a duplicate system profile in RHN Satellite. Consider using rhnreg_ks and activation keys to re-register a system without creating a duplicate entry. Refer to Section 7.4.2.9.1.4, “System Details ⇒ Details ⇒ Reactivation — for more information.
Verifying Registration

Figure 2.1. Verifying Registration

If you are certain you would like to re-register this way, select the Yes, Continue button.
Registering for Software Updates

Figure 2.2.  Registering for Software Updates

The Registering for Software Updates page summarizes the steps involved in the registration process. To learn more about the benefits of Hosted and Satellite, press the Why Should I Connect to RHN button. Otherwise, press the Forward button to continue.
Choose an Update Location

Figure 2.3. Choose an Update Location

The Choose an Update Location page allows you to select the source of your software updates - either from RHN Hosted or from RHN Satellite Server or Proxy Server. For Satellite or Proxy, the associated radio button and enter the URL of your Satellite or Proxy into the Red Hat Network Location field.
If you connect to the internet through an HTTP Proxy, press the Advanced Network Configuration button. In the subsequent pop-up window, use the appropriate fields for your HTTP proxy; if your proxy requires authentication, enter the username and password here. When finished, press the Close button to continue. You are returned to the Choose an Update Location page. Press Forward to continue.
Enter Your Account Information

Figure 2.4. Enter Your Account Information

The Enter Your Account Information page requires you to enter your RHN login information (if you already have one), or to create a new account if you do not. To create a new RHN account, press the Create a New Account button. Fill in the fields that are marked with an asterisk and any other information you wish to enter. Press the Create New Login button to create your new login.

Note

If you are registering to RHN Hosted as part of an organization, please do not create a new account through this screen. Contact your Organization Administrator and request that they create an account for you, then provide that information in the Enter Your Account Information page. Otherwise, you may not be correctly associated with your organization or its resources.
Create Your System Profile

Figure 2.5. Create Your System Profile

The Create Your System Profile page allows you to select a profile name for the system you are registering. The default name for any system is that system's hostname, although you may change it as you like. You can also select whether to report hardware and package information to RHN. It is recommended that you choose to report this information; doing so allows RHN to automatically subscribe your system to the base and child channels most appropriate to your system. If you wish, you may press either the View Hardware Profile or View Package Profile button to view the information that rhn_register uploads to RHN or Satellite in this step.

Note

This automatic registration does not automatically subscribe your system to optional child channels, such as the RHN Tools channel. If you wish to register a system and have them automatically subscribed to a set of channels of your choice, consider using a kickstart profile or rhnreg_ks and activation keys to do so.
Review System Subscription Details

Figure 2.6. Review System Subscription Details

The Review System Subscription Details page displays the base and child channel information to which your system has been subscribed. Take a moment to review the channels, and then press Forward to continue.
Finish Setting Up Software Updates

Figure 2.7. Finish Setting Up Software Updates

The Finish Setting Up Software Updates page indicates that you have successfully registered a Red Hat Enterprise Linux 5 system with RHN. From this point, you do not have to do anything to receive software updates. A package icon will appear in the upper right corner of your desktop when updates are available. Click on the icon to apply available updates. Click Finish to exit the wizard.

Note

If you do not have any entitlements available for this system, this final page indicates that the registration has failed. This does not mean that the system profile has not been stored with RHN, only that you will not receive automatic updates without manual intervention. You can always login to the RHN or Satellite Web interface and either purchase additional entitlements or get an entitlement from your Satellite administrator. Click the Exit software update setup button to exit the wizard.

2.1.1. Command-line version of rhn_register

There is also a command-line version of rhn_register that allows you to register your system for access to RHN or Satellite without a graphical desktop environment.
Type rhn_register at a shell prompt. If you are on shell terminal window and want to run the non-graphical version, you must type rhn_register --nox to prevent opening the graphical client.
rhn_register Command-line version

Figure 2.8. rhn_register Command-line version

The interface of the command-line version of rhn_register has the same configuration screens as the graphical desktop version. However, to navigate the screen, use the directional keys on the keyboard to move left or right and highlight the selections. Press the Space Bar to select an action. Press Tab to move through different navigational elements such as text boxes, checkboxes (which are marked with an x when selected), and radio buttons (which when selected will be marked with an asterisk).
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