Updating Undercloud Components¶

1. Before upgrading the undercloud, it is highly suggested to perform a backup of the undercloud and validate that a restore works fine.

2. Remove all Delorean repositories:

   Note

   You may wish to backup your current repos before disabling them

   mkdir -p /home/stack/REPOBACKUP
   sudo mv /etc/yum.repos.d/delorean* /home/stack/REPOBACKUP
   

   sudo rm /etc/yum.repos.d/delorean*
   

3. Enable new Delorean repositories:

   Download and install the python2-tripleo-repos RPM from the current RDO repository. For example

   sudo yum install -y https://trunk.rdoproject.org/centos7/current/python2-tripleo-repos-<version>.el7.centos.noarch.rpm
   

   Note

   tripleo-repos removes any repositories that it manages before each run. This means all repositories must be specified in a single tripleo-repos call. As an example, the correct way to install the current and ceph repos is to run tripleo-repos current ceph, not two separate calls.

   Stable Branch

   Enable the appropriate repos for the desired release, as indicated below. Do not enable any other repos not explicitly marked for that release.

   Newton

   Enable the current Newton repositories

   sudo -E tripleo-repos -b newton current
   

   Ceph

   Include the Ceph repo in the tripleo-repos call

   sudo -E tripleo-repos -b newton current ceph
   

   Ocata

   Enable the current Ocata repositories

   sudo -E tripleo-repos -b ocata current
   

   Ceph

   Include the Ceph repo in the tripleo-repos call

   sudo -E tripleo-repos -b ocata current ceph
   

   Pike

   Enable the current Pike repositories

   sudo -E tripleo-repos -b pike current
   

   Ceph

   Include the Ceph repo in the tripleo-repos call

   sudo -E tripleo-repos -b pike current ceph
   

   Queens

   Enable the current Queens repositories

   sudo -E tripleo-repos -b queens current
   

   Ceph

   Include the Ceph repo in the tripleo-repos call

   sudo -E tripleo-repos -b queens current ceph
   

   Warning

   The remaining repositories configuration steps below should not be done for stable releases!

   Run tripleo-repos to install the appropriate repositories. The option below will enable the latest master TripleO packages and the latest promoted packages for all other OpenStack services and dependencies. There are other repository configurations available in tripleo-repos, see its --help output for details.

   sudo -E tripleo-repos current-tripleo-dev
   

   Ceph

   Include the Ceph repository in the tripleo-repos command

   sudo -E tripleo-repos current-tripleo-dev ceph
   

1. Clean the yum cache to ensure only the new repos are used

   sudo yum clean all
   sudo rm -rf /var/cache/yum
   

2. Update required package:

   Validations

   It is strongly recommended that you validate the state of your undercloud before starting any upgrade operations. The tripleo-validations repo has some ‘pre-upgrade’ validations that you can execute by following the instructions at validations to execute the “pre-upgrade” group

   mistral execution-get-output $(openstack workflow execution create -f value -c ID tripleo.validations.v1.run_groups '{"group_names": ["pre-upgrade"]}')
   

   Newton to Ocata

   The following commands need to be run before the undercloud upgrade:

   sudo systemctl stop openstack-*
   sudo systemctl stop neutron-*
   sudo systemctl stop openvswitch
   sudo systemctl stop httpd
   sudo yum update instack-undercloud openstack-puppet-modules openstack-tripleo-common
   

   Ocata to Pike

   Ceph

   Prior to Pike, TripleO deployed Ceph with puppet-ceph. With the Pike release it is possible to use TripleO to deploy Ceph with either ceph-ansible or puppet-ceph, though puppet-ceph is deprecated. To use ceph-ansible, the CentOS Storage SIG Ceph repository must be enabled on the undercloud and the ceph-ansible package must then be installed:

   sudo yum install --enablerepo=extras centos-release-ceph-jewel
   sudo yum install ceph-ansible
   

   Ceph clusters deployed with Ocata via puppet-ceph will be migrated so that all of the existing Ceph services are run inside of containers. This migration will be managed not by puppet-ceph, but by ceph-ansible, which TripleO will use to control updates to the same ceph cluster after the Ocata to Pike upgrade.

   Update TripleO CLI and dependencies

   sudo yum update python-tripleoclient* openstack-tripleo-common openstack-tripleo-heat-templates
   

3. Run the undercloud upgrade command. This command will upgrade all packages and use puppet to apply new configuration and restart all OpenStack services

   openstack undercloud upgrade
   

   Note

   The undercloud is containerized by default as of Rocky. Therefore, an undercloud deployed on Queens (non-containerized) will be upgraded to a containerized undercloud on Rocky, by default. To upgrade with instack undercloud, you’ll need to upgrade with --use-heat=False option. Note this isn’t tested and not supported.

   Note

   It’s possible to enable verbose logging with --verbose option. To cleanup an undercloud after its upgrade, you’ll need to set upgrade_cleanup to True in undercloud.conf. It’ll remove the rpms that were deployed by instack-undercloud, after the upgrade to a containerized undercloud.

   Note

   If you added custom OVS ports to the undercloud (e.g. in a virtual testing environment) you may need to re-add them at this point.