In OpenShift Container Platform 4.10, you can perform an installation that does not
require an active connection to the internet to obtain software components. Restricted network installations can be completed using installer-provisioned infrastructure or user-provisioned infrastructure, depending on the cloud platform to which you are installing the cluster.
To complete a restricted network installation, you must create a registry that
mirrors the contents of the OpenShift Container Platform registry and contains the
installation media. You can create this registry on a mirror host, which can
access both the internet and your closed network, or by using other methods
that meet your restrictions.
Because of the complexity of the configuration for user-provisioned installations, consider completing a standard user-provisioned infrastructure installation before you attempt a restricted network installation using user-provisioned infrastructure. Completing this test installation might make it easier to isolate and troubleshoot any issues that might arise during your installation in a restricted network.
Clusters in restricted networks have the following additional limitations and restrictions:
ClusterVersion status includes an
Unable to retrieve available updates
By default, you cannot use the contents of the Developer Catalog because
you cannot access the required image stream tags.