Chapter 5. Completing post-installation tasks

Procedure

1. From the Initial Setup window, select Licensing Information.

   The License Agreement window opens and displays the licensing terms for Red Hat Enterprise Linux.

2. Review the license agreement and select the I accept the license agreement checkbox.

   Note

   You must accept the license agreement. Exiting Initial Setup without completing this step causes a system restart. When the restart process is complete, you are prompted to accept the license agreement again.

3. Click Done to apply the settings and return to the Initial Setup window.

   Note

   If you did not configure network settings, you cannot register your system immediately. In this case, click Finish Configuration. Red Hat Enterprise Linux 8 starts and you can login, activate access to the network, and register your system. See Subscription manager post installation for more information. If you configured network settings, as described in Network hostname, you can register your system immediately, as shown in the following steps:

4. From the Initial Setup window, select Subscription Manager.

   Important

   If you registered and installed RHEL from the CDN, the Subscription Manager option displays a note that all installed products are covered by valid entitlements.

5. The Subscription Manager graphical interface opens and displays the option you are going to register, which is: subscription.rhsm.redhat.com.
6. Click Next.
7. Enter your Login and Password details and click Register.
8. Confirm the Subscription details and click Attach. You must receive the following confirmation message: Registration with Red Hat Subscription Management is Done!
9. Click Done. The Initial Setup window opens.
10. Click Finish Configuration. The login window opens.
11. Configure your system. See the Configuring basic system settings document for more information.

Procedure

1. Open a terminal window and register your Red Hat Enterprise Linux system using your Red Hat Customer Portal username and password:

   # subscription-manager register --username [username] --password [password]

2. When the system is successfully registered, an output similar to the following is displayed:

   # The system has been registered with ID: 123456abcdef
   # The registered system name is: localhost.localdomain

3. Set the role for the system, for example:

   # subscription-manager role --set="Red Hat Enterprise Linux Server"

   Note

   Available roles depend on the subscriptions that have been purchased by the organization and the architecture of the Red Hat Enterprise Linux 8 system. You can set one of the following roles: Red Hat Enterprise Linux Server, Red Hat Enterprise Linux Workstation, or Red Hat Enterprise Linux Compute Node.

4. Set the service level for the system, for example:

   # subscription-manager service-level --set="Premium"

5. Set the usage for the system, for example:

   # subscription-manager usage --set="Production"

6. Attach the system to an entitlement that matches the host system architecture:

   # subscription-manager attach --auto

7. When a subscription is successfully attached, an output similar to the following is displayed:

   Installed Product Current Status:
   Product Name: Red Hat Enterprise Linux for x86_64
   Status: Subscribed

   Note

   An alternative method for registering your Red Hat Enterprise Linux 8 system is by logging in to the system as a root user and using the Subscription Manager graphical user interface.

Procedure

1. Log in to your system.
2. From the top left-hand side of the window, click Activities.
3. From the menu options, click the Show Applications icon.
4. Click the Red Hat Subscription Manager icon, or enter Red Hat Subscription Manager in the search.

5. Enter your administrator password in the Authentication Required dialog box.

   Note

   Authentication is required to perform privileged tasks on the system.

6. The Subscriptions window opens, displaying the current status of Subscriptions, System Purpose, and installed products. Unregistered products display a red X.
7. Click the Register button.
8. The Register System dialog box opens. Enter your Customer Portal credentials and click the Register button.

Procedure

1. Authenticate your Red Hat account using the Account or Activation Key option.

2. Select the Set System Purpose field and from the drop-down menu select the Role, SLA, and Usage for the RHEL 8 installation.

   At this point, your Red Hat Enterprise Linux 8 system has been successfully registered.

1. From a terminal window, run the following command to set the intended role of the system:

   # subscription-manager syspurpose role --set "VALUE"

   Replace VALUE with the role that you want to assign:

   • Red Hat Enterprise Linux Server
   • Red Hat Enterprise Linux Workstation
   • Red Hat Enterprise Linux Compute Node

   For example:

   # subscription-manager syspurpose role --set "Red Hat Enterprise Linux Server"

   1. Optional: Before setting a value, see the available roles supported by the subscriptions for your organization:

      # subscription-manager syspurpose role --list

   2. Optional: Run the following command to unset the role:

      # subscription-manager syspurpose role --unset

2. Run the following command to set the intended Service Level Agreement (SLA) of the system:

   # subscription-manager syspurpose service-level --set "VALUE"

   Replace VALUE with the SLA that you want to assign:

   • Premium
   • Standard
   • Self-Support

   For example:

   # subscription-manager syspurpose service-level --set "Standard"

   1. Optional: Before setting a value, see the available service-levels supported by the subscriptions for your organization:

      # subscription-manager syspurpose service-level --list

   2. Optional: Run the following command to unset the SLA:

      # subscription-manager syspurpose service-level --unset

3. Run the following command to set the intended usage of the system:

   # subscription-manager syspurpose usage --set "VALUE"

   Replace VALUE with the usage that you want to assign:

   • Production
   • Disaster Recovery
   • Development/Test

   For example:

   # subscription-manager syspurpose usage --set "Production"

   1. Optional: Before setting a value, see the available usages supported by the subscriptions for your organization:

      # subscription-manager syspurpose usage --list

   2. Optional: Run the following command to unset the usage:

      # subscription-manager syspurpose usage --unset

4. Run the following command to show the current system purpose properties:

   # subscription-manager syspurpose --show

   1. Optional: For more detailed syntax information run the following command to access the subscription-manager man page and browse to the SYSPURPOSE OPTIONS:

      # man subscription-manager

Procedure

1. To update your system, run the following command as root:

   # yum update

2. Even though the firewall service, firewalld, is automatically enabled with the installation of Red Hat Enterprise Linux, there are scenarios where it might be explicitly disabled, for example in a Kickstart configuration. In that scenario, it is recommended that you re-enable the firewall.

   To start firewalld, run the following commands as root:

   # systemctl start firewalld
   # systemctl enable firewalld

3. To enhance security, disable services that you do not need. For example, if your system has no printers installed, disable the cups service using the following command:

   # systemctl mask cups

   To review active services, run the following command:

   $ systemctl list-units | grep service