Centos7 not able to download yum-downloadonly

Question

I am on centos 7 and need to only download a package without its dependencies, yum-downloadonly seems to be the right tool, but when I do commands like sudo yum install yum-downloadonly or sudo yum install yum-plugin-downloadonly, I get:

Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Warning: No matches found for: downloadonly

for the first command, and for the second I get:

Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Package yum-3.4.3-168.el7.centos.noarch already installed and latest version
Nothing to do

When trying sudo yum search downloadonly, I get:

Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
Warning: No matches found for: downloadonly
No matches found

And of course, when I try to use it anyway in the hope yum got it somehow, I get:

install: unrecognized option '--downloadonly'
Try 'install --help' for more information.

So my question is, what do I have to do to downlaod the plugin, or failing that, download only the package without the plugin.

Answer 1

The yum syntax for it is yum install --downloadonly package_name which will download the rpm's into /var/cache/yum/$arch/$repo/packages (except if you use also the option --downloaddir=/tmp) and if the package is already installed use yum reinstall --downloadonly package_name. But it will download also all prerequisites. But anyway the downloadonly option isn't a yum plugin.