Yes, Cloudbreak can install a cluster without internet connection if you set the local repo, skip SSSD, and live with limitation of recipes. But somehow you have to install Cloudbreak itself, which is impossible withoout internet connection. Easiest way to install and manage Cloudbreak installation is to use Cloudbreak deployer. But some of the commands are dowloading content, like init, upgrade, version, doctor. So first you have to install deployer with internet connection, for example you create an AMI which contains an already installed deployer and cloudbreak, and than in the secured network you start an instance of the created AMI.
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