Using the RHEL installer, choose “Minimal Install” as the Software Selection for the OS.

Prevent the accidental deployment of an unsupported RHEL version, perform To lock the RHEL OS version.

Install the required OS package set.

For a CLM deployer host or CLM cluster member, install the packages listed in Required RHEL OS packages for CLM container elements.

Remove specific OS packages that are installed by default but not required.

1. For a CLM deployer host or CLM cluster member, remove the packages listed in RHEL OS packages to remove from CLM container elements.

2. For an entity that is deployed outside the container environment, remove the packages listed in .

Perform any additional package configuration described in Special OS requirements, as required.

Perform To enable the CLM crypto-policy function on a manually installed RHEL OS to secure the OS using a RHEL crypto-policy setting.

Note: You must enable the crypto-policy function before you attempt to install any CLM software on a station.

Perform To set the default Python version to configure the default Python language version to the version required by the CLM.

On a CLM deployer host or CLM cluster station, perform To create the nsp user on a manually installed CLM cluster RHEL OS to create the RHEL nsp user.

Perform To disable the RHEL firewalld service to ensure that the RHEL firewalld service is inactive during deployment.

Optionally, for greater OS security, perform To disable RHEL user namespaces to disable the use of RHEL user namespaces.