===== Managing packages in lab-extras =====
lab-extras is a repo of miscellaneous packages we want testnodes to have access to.

http://apt-mirror.front.sepia.ceph.com/lab-extras/

An example of a time we'd want to use this is when a package from CentOS 7.3 has a bugfix we want to test on CentOS 7.2.  The RPM can be downloaded from the CentOS 7.2 CM (testing) repo, placed in the CentOS 7 lab-extras repo and installed.  Example: http://tracker.ceph.com/issues/18094

===== How-To =====
  - Obtain the RPM from a trusted source
    - e.g., ''yum install $package %%--%%downloadonly %%--%%downloaddir=/root''
  - ''%%rsync -azvP --rsync-path='sudo rsync' package.rpm gitbuilder.ceph.com:/home/apt-mirror/mirror/lab-extras/centos7/x86_64/%%''
  - ''ssh gitbuilder.ceph.com''
  - ''createrepo %%--%%update /home/apt-mirror/mirror/lab-extras/centos7/''

===== Installing the package =====
Since ceph-cm-ansible makes sure the lab-extras repo is present on all testnodes, a quick way to update a single package on all testnodes would be to run an ansible playbook.  Here's an example from when nfs-utils was done.

<code>
## ansible-playbook thisplaybook.yml --limit="smithi*,mira*"

- hosts:
    - testnodes
  become: true
  tasks:

  - name: Upgrade nfs-utils to lab-extras version
    yum:
      name: nfs-utils
      state: latest
    when: ansible_distribution == 'CentOS'
</code>

This updated the version to nfs-utils-1.3.0-0.**35**.el7.x86_64.  You can make sure no hosts got left behind by running ''ansible -a "rpm -qa nfs-utils" mira | grep -B 1 nfs-utils-1.3.0-0.33.el7.x86_64''.