Recently I used the yum-config-manager program from the yum-utils package to add a repository in a CentOS-box.

This is the easy part:

# install the yum-config-manager
yum -y install yum-utils

# add the official ansible repository
yum-config-manager --add-repo=https://releases.ansible.com/ansible/rpm/release/epel-7-x86_64/

What gets added in /etc/yum.repos.d/ is a file with the following content:

[releases.ansible.com_ansible_rpm_release_epel-7-x86_64_]
name=added from: https://releases.ansible.com/ansible/rpm/release/epel-7-x86_64/
baseurl=https://releases.ansible.com/ansible/rpm/release/epel-7-x86_64/
enabled=1

Now how to set for example the gpg-key with this command? That’s trickier.

The man-page for yum says you should use --setopt to “set arbitrary config and repo options”. man yum-config-manager goes into a little more detail:

Set any config option in yum config or repo files. For options
in the global config just use: --setopt=option=value for repo
options use: --setopt=repoid.option=value.  The latter form
accepts wildcards in repoid that will be expanded to the
selected sections.  If repoid contains no wildcard, it will
automatically be selected; this is useful if you are
addressing a disabled repo, in which case you don't have to
additionally pass it as an argument.

So to set the gpg-key for the repository I created before, I had to use this command:

yum-config-manager --save --setopt=releases.ansible.com_ansible_rpm_release_epel-7-x86_64_.gpgkey=https://releases.ansible.com/keys/RPM-GPG-KEY-ansible-release.pub


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