Generating metadata without internet

Hello,

I would like to use Nexus in an isolated environment (without internet connection, local network).

I am using only HOSTED type of repos and this formats: YUM, PYPI, APT, RAW, Docker.

Does anyone have any experience how metadata is generated, does it need connection to the internet or it can be created offline?

I had some problems with pip metadata. Simple files for specific package (Simple directory on pypi repo) are only created when you download a specific package (example, first time when I download ansible package from pip, metadata for ansible is created) and it only happens if nexus is connected to the internet. If it does not have a connection to the internet (and simple file for ansible is not yet created) and I try to install package ansible with pip, I get error “Could not find a version that satisfies the requirement ansible”.

I tried to rebuild metadata with “Rebuild index” but did not help.

I am using nexus version 3.30.1 and run it in a docker container.