Dependencies

This steps are not needed if SKOOR is installed from the SKOOR Offline Repository. Instead it is advised to disable existing repositories entirely.

sed -i 's/enabled=1/enabled=0/g' /etc/yum.repos.d/*.repo

AlmaLinux 8 / RockyLinux 8

If the SKOOR software is installed on AlmaLinux 8 or RockyLinux 8 systems, the EPEL (for smem, used by the SKOOR Engine Agent) and rpmfusion (for ffmpeg) need to be added:

dnf install epel-release.noarch rpmfusion-free-release.noarch firewalld chrony

systemctl restart firewalld && systemctl enable firewalld
systemctl restart chronyd && systemctl enable chronyd

AlmaLinux 9 / RockyLinux 9

If the SKOOR software is installed on AlmaLinux 9 or RockyLinux 9 systems, the EPEL (for smem, used by the SKOOR Engine Agent) and rpmfusion (for ffmpeg) need to be added. Also crb must be enabled (for libmysql).

dnf install epel-release rpmfusion-free-release firewalld chrony
dnf config-manager --enable crb

systemctl start firewalld && systemctl enable firewalld
systemctl restart chronyd && systemctl enable chronyd

RHEL 8

In case the subscription-manager configuration is already in place. The following repository needs to be enabled to install SKOOR. For more details about the subscription-manager configuration please see the chapter below.

subscription-manager repos --enable codeready-builder-for-rhel-8-$(arch)-rpms

The EPEL repository needs to be installed for certain components used by the SKOOR agent (smem). Refer to the following webpage to download the latest epel-release RPM file: http://fedoraproject.org/wiki/EPEL.

Then transfer the RPM file and install it using the following command:

dnf install epel-release-latest-8.noarch.rpm

RHEL 9

subscription-manager repos --enable codeready-builder-for-rhel-9-$(arch)-rpms

Then transfer the RPM file and install it using the following command:

dnf install epel-release-latest-9.noarch.rpm

RHEL System Subscription

Each system must be registered with its own subscription in Red Hat subscription-manager.

To be able to register a system requires a connection from the server to the internet (unless there is an RHEL Satellite setup in the LAN) and a valid subscription (contract) with Red Hat with a username and password.

subscription-manager

Subscription-manager comes pre-installed with the minimal installation.

Issue the registration (example):

subscription-manager register

Enter username and password

Username: <your_subscription_username>
Password:  *******
The system has been registered with ID: d7076d65-ac ...

At this point the system is registered, but not yet attached to a subscription. Attach to a subscription:

subscription-manager list

subscription-manager attach --auto

subscription-manager list

In the RedHat portal one should now see that the system is attached to a subscription. Systems registered with subscription-manager show up under Subscription management -> Units in Red Hat’s webportal.

Unregister subscription-manager

To detach a subscription & unregister:

subscription-manager remove --all

subscription-manager unregister

This action can also be issued in the Red Hat webportal, in case the system is already wiped.

Repositories

Now dnf can be used to its full extent. By default, only the standard Red Hat repository is available. Additionally, the following repositories are required for some of the SKOOR Engine components and must be enabled for the registered system in the Red Hat webportal or from the command line:

Red Hat 8

subscription-manager repos --enable codeready-builder-for-rhel-8-$(arch)-rpms

Then transfer the RPM file and install it using the following command:

dnf install epel-release-latest-8.noarch.rpm