====== Installing an RPM on the Rocks compute nodes at kickstart ======

On the frontend (as **root** or using ''sudo'') install the package using ''yum install'':

<code bash>
$ sudo yum install postgresql-libs
</code>

Sometimes you need to enable a particular repo to find the right package:

<code bash>
$ sudo yum install --enablerepo base,update postgresql-devel # or
$ sudo yum install --enablerepo epel postgresql-devel
</code>

RPM will be downloaded to ''/var/cache/yum/{REPOSITORY}/packages/''.  Copy the RPM to ''/export/rocks/install/contrib/6.1.1/x86_64/RPMS/''

Add a ''<package>'' entry for the RPM to the XML file
''/export/rocks/install/site-profiles/6.1.1/nodes/extend-compute.xml''.  Note that this entry does not contain version numbers.

We then need to recreate the distro:

<code bash>
$ cd /export/rocks/install
$ rocks create distro
</code>

You then reinstall (and restart) all the compute nodes.  See [[howto:rocks_reinstall_compute_node|this wiki entry]] for more details on how to do that.