instack-undercloud/doc/source/installation/updating.rst

Updating Undercloud Components

You can upgrade any packages that are installed on the undercloud machine.

1. Update the RDO-Manager Trunk repository:

   # Remove old and enable new RDO-Manager Trunk
   sudo rm /etc/yum.repos.d/rdo-management-trunk.repo
   sudo curl -o /etc/yum.repos.d/rdo-management-trunk.repo http://trunk-mgt.rdoproject.org/centos-kilo/current-passed-ci/delorean-rdo-management.repo

2. Use yum to update all installed packages:

   sudo yum update -y
   
   # You can specify the package names to update as options in the yum update command.

You do not need to restart any services after you update.