Where does yum get the info output from updateinfo?

Question

linux

We made a local repository via reposync from a Yandex mirror for the centos7 and epel repository.
Now the yum uopdateinfo list all command on machines that use our repository does not show anything, but on those that use the mirror.yandex.ru repository, there is an output.
Where does yum get the info output from updateinfo?

Answer 1

Need more metadata in your repo. They are downloaded by reposync with the key --download-metadata
And then they need to be inserted into repomd.xml in your repo.
Here is an example of a script - https://gist.github.com/brianredbeard/7034245
It is clear what is happening and how.