How to know from which yum repository a package has been installed?

After I have installed a package by yum (with multiple repositories configured), how can I find from which repository it has been installed?

If I run yum info package-name (or yum list package-name), I can only see that the package is "installed".

Solution 1:

With yum-utils installed, repoquery will provide the information you seek (here 'epel' being the repository).

$ repoquery -i cherokee

Name        : cherokee
Version     : 0.99.49
Release     : 1.el5
Architecture: i386
Size        : 8495964
Packager    : Fedora Project
Group       : Applications/Internet
URL         : http://www.cherokee-project.com/
Repository  : epel
Summary     : Flexible and Fast Webserver
Description :
Cherokee is a very fast, flexible and easy to configure Web Server. It supports
the widespread technologies nowadays: FastCGI, SCGI, PHP, CGI, TLS and SSL
encrypted connections, Virtual hosts, Authentication, on the fly encoding,
Apache compatible log files, and much more.

Solution 2:

What version of yum?

On the current version if the installed package is the same version as the most recent one available then the repo it was installed from is shown.

$ yum info irssi
Installed Packages
Name       : irssi
Arch       : i586
Version    : 0.8.14
Release    : 1.fc11
Size       : 2.3 M
Repo       : installed
From repo  : updates
Summary    : Modular text mode IRC client with Perl scripting
URL        : http://irssi.org/
License    : GPLv2+
Description: Irssi is a modular IRC client with Perl scripting. Only text-mode
           : frontend is currently supported. The GTK/GNOME frontend is no
           : longer being maintained.

$ yum --version
3.2.23

If there is a newer package available, then it will be shown separately, with the new version showing the repo it's available from.