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How do I install docker on RHEL 7 offline?

New to docker.

Need to install docker on a RHEL 7 (no gui) system.

  1. Does the RHEL 7 installation come with docker already on it? If not, where do I get it from? (I cannot use the docker software at docker.com, it has to come from RedHat - government rules, not mine)

  2. Once procured, how do I install it on a system that is not connected to the internet.

I hope I've made my request as simple as possible, let the questions begin.

Solution

  • Red Hat's build of docker is available in the Red Hat Enterprise Linux 7 Extras channel, but only for the Server variant of the product. You can download individual packages from the Customer Portal after login, but it is going to be a bit cumbersome because the docker package has multiple dependencies.

    Alternatively, you can use the reposync tool to mirror the entire Extras channel on a network-connected machine which has a subscription. Or you can use yum in download-only mode and copy over the RPMs stored in the cache directory (but please copy them to a regular directory on the target, and use yum install to install them).