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Chapter 2. Register and connect RHEL systems using the rhc client


The rhc client performs critical system tasks, such as registering your system to the Red Hat Hybrid Cloud Console, retrieving the current configuration of various services that the remote host configuration manager supports, and updating the current configuration of services. It also maintains a history of configuration changes, and ensures that newly connected systems are kept up to date with the latest configuration.

The rhc client updates a system through a change in the remote host configuration manager, and through a new remote host configuration connection event from Red Hat Insights for Red Hat Enterprise Linux inventory.

Note

Currently, settings apply to all systems connected with the rhc client. You cannot configure a system or group of systems independently.

Before configuring your system to connect using the rhc client, review the configuration in Red Hat Hybrid Cloud Console > Red Hat Insights > Inventory > System Configuration > Remote Host Configuration (RHC). The remote host configuration manager settings determine your system’s configuration.

RHEL version considerations

Setup procedures for the rhc client differ depending on the Red Hat Enterprise Linux (RHEL) version on the system.

  • RHEL 8.6 and later, and RHEL 9.0 and later support simplified registration to Red Hat Subscription Management (RHSM) and Insights for Red Hat Enterprise Linux .
  • RHEL 8.5 supports the other features of remote host configuration, but configuration and setup involve a few more steps.

Timing of registration

To register the system to Red Hat Subscription Management (RHSM) and Insights for Red Hat Enterprise Linux with a single command, it might make sense to run the rhc connect command during the RHEL installation workflow, following network configuration. For RHEL 8.6 and later, this step will take care of the registration to Red Hat Subscription Management (RHSM), but you may still use RHSM for advance configurations.

If you have already installed and registered the RHEL installation with RHSM, or registered with Insights for Red Hat Enterprise Linux, you can still use rhc connect to enable the rhc client at any time to get the benefits of the remote host configuration manager and direct remediations.

2.1. Setting up remote host configuration

The remote host configuration tool is evolving rapidly for multiple major and minor versions of Red Hat Enterprise Linux. For the latest installation instructions, see the knowledge article, Registering your host using RHC. The article will be updated as changes are made for various RHEL versions.

2.2. Disconnecting a system using remote host configuration

Prerequisites

  • You are logged in to the system as root or have sudo permissions.

Procedure

  • Run the following command on each Red Hat Enterprise Linux (RHEL) system that you want to remove from the remote host configuration manager.

    Important

    Disconnecting through the rhc client unregisters your system from both the Red Hat Customer Portal and Red Hat Insights for Red Hat Enterprise Linux.

    # rhc disconnect
    
    Disconnecting <$HOSTNAME> from console.redhat.com.
    This might take a few seconds.
    
    ● Deactivated the Red Hat connector daemon
    
    Manage your Red Hat connector systems: https://red.ht/connector

2.3. Using additional CLI options

View additional options for the rhc command.

Prerequisites

  • You are logged in to the system as root or have sudo permissions.

Procedure

  • Run ps and pipe through grep to display the connector rhcd process.

    PID TTY TIME COMMAND
    14992 ? 0:00 /usr/sbin/rhcd
  • Run systemctl status rhcd to view the on/off status of the rhcd daemon.

    # systemctl status rhcd
  • Enter rhc --help with no other options.

    GLOBAL OPTIONS:
       --version, -v  print the version (default: false)
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