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Major upgrades¶
This guide provides information about the upgrade process from 2024.1 to 2024.2 for OpenStack-Ansible.
Note
You can upgrade between sequential releases or between releases marked as SLURP.
Introduction¶
For upgrades between major versions, the OpenStack-Ansible repository provides
playbooks and scripts to upgrade an environment. The run-upgrade.sh
script runs each upgrade playbook in the correct order, or playbooks can be run
individually if necessary. Alternatively, a deployer can upgrade manually.
For more information about the major upgrade process, see Upgrading by using a script and Upgrading manually.
Warning
Upgrading to master is not recommended. Master is under heavy development, and is not stable. Test this on a development environment first.
Upgrading by using a script¶
The 2024.2 release series of OpenStack-Ansible contains the code for migrating from 2024.1 to 2024.2.
Running the upgrade script¶
To upgrade from 2024.1 to
2024.2 by using the upgrade script, perform the
following steps in the openstack-ansible directory:
Change directory to the repository clone root directory:
# cd /opt/openstack-ansible
Run the following commands:
# git checkout master # ./scripts/run-upgrade.sh
For more information about the steps performed by the script, see Upgrading manually.
Upgrading manually¶
Manual upgrades are useful for scoping the changes in the upgrade process (for example, in very large deployments with strict SLA requirements), or performing other upgrade automation beyond that provided by OpenStack-Ansible.
The steps detailed here match those performed by the run-upgrade.sh
script. You can safely run these steps multiple times.
Preflight checks¶
Before starting with the upgrade, perform preflight health checks to ensure your environment is stable. If any of those checks fail, ensure that the issue is resolved before continuing.
Check out the 2024.2 release¶
Ensure that your OpenStack-Ansible code is on the latest 2024.2 tagged release.
# git checkout master
Prepare the shell variables¶
Define these variables to reduce typing when running the remaining upgrade tasks. Because these environments variables are shortcuts, this step is optional. If you prefer, you can reference the files directly during the upgrade.
# cd /opt/openstack-ansible
# export MAIN_PATH="$(pwd)"
# export SCRIPTS_PATH="${MAIN_PATH}/scripts"
Backup the existing OpenStack-Ansible configuration¶
Make a backup of the configuration of the environment:
# source_series_backup_file="/openstack/backup-openstack-ansible-2024.1.tar.gz"
# tar zcf ${source_series_backup_file} /etc/openstack_deploy /etc/ansible/ /usr/local/bin/openstack-ansible.rc
Bootstrap the new Ansible and OSA roles¶
To ensure that there is no currently set ANSIBLE_INVENTORY to override the default inventory location, we unset the environment variable.
# unset ANSIBLE_INVENTORY
Bootstrap Ansible again to ensure that all OpenStack-Ansible role dependencies are in place before you run playbooks from the 2024.2 release.
# ${SCRIPTS_PATH}/bootstrap-ansible.sh
Change to the playbooks directory¶
Change to the playbooks directory to simplify the CLI commands from here on in the procedure, given that most playbooks executed are in this directory.
# cd playbooks
Implement changes to OSA configuration¶
If there have been any OSA variable name changes or environment/inventory changes, there is a playbook to handle those changes to ensure service continuity in the environment when the new playbooks run. The playbook is tagged to ensure that any part of it can be executed on its own or skipped. Please review the contents of the playbook for more information.
# openstack-ansible "${SCRIPTS_PATH}/upgrade-utilities/deploy-config-changes.yml"
Note
With upgrade to 2024.1 (Caracal) release usage of RabbitMQ Quorum Queues is enabled by default. Migration to usage of Quorum Queues results in prolonged downtime for services during upgrade.
To reduce downtime you might want to set
oslomsg_rabbit_quorum_queues: false at this point and migrate to
Quorum Queues usage after OpenStack upgrade is done.
Please, check RabbitMQ maintenance for more information about switching between Quourum and HA Queues.
Upgrade hosts¶
Before installing the infrastructure and OpenStack, update the host machines.
Warning
Usage of non-trusted certificates for RabbitMQ is not possible
due to requirements of newer amqp versions.
After that you can proceed with standard OpenStack upgrade steps:
# openstack-ansible openstack.osa.setup_hosts --limit '!galera_all:!rabbitmq_all' -e package_state=latest
This command is the same setting up hosts on a new installation. The
galera_all and rabbitmq_all host groups are excluded to prevent
reconfiguration and restarting of any of those containers as they need to
be updated, but not restarted.
Once that is complete, upgrade the final host groups with the flag to prevent container restarts.
# openstack-ansible openstack.osa.setup_hosts -e 'lxc_container_allow_restarts=false' --limit 'galera_all:rabbitmq_all'
Upgrade infrastructure¶
We can now go ahead with the upgrade of all the infrastructure components. To ensure that rabbitmq and mariadb are upgraded, we pass the appropriate flags.
# openstack-ansible openstack.osa.setup_infrastructure -e 'galera_upgrade=true' -e 'rabbitmq_upgrade=true' -e package_state=latest
With this complete, we can now restart the mariadb containers one at a time, ensuring that each is started, responding, and synchronised with the other nodes in the cluster before moving on to the next steps. This step allows the LXC container configuration that you applied earlier to take effect, ensuring that the containers are restarted in a controlled fashion.
# openstack-ansible "${SCRIPTS_PATH}/upgrade-utilities/galera-cluster-rolling-restart.yml"
Upgrade OpenStack¶
We can now go ahead with the upgrade of all the OpenStack components.
# openstack-ansible openstack.osa.setup_openstack -e package_state=latest
Upgrade Ceph¶
With each OpenStack-Ansible version we define the default Ceph client version that will be installed on Glance/Cinder/Nova hosts and used by these services. If you want to preserve the previous version of the ceph client during an OpenStack-Ansible upgrade, you will need to override a variable ceph_stable_release in your user_variables.yml
If Ceph has been deployed as part of an OpenStack-Ansible deployment using the roles maintained by the Ceph-Ansible project you will also need to upgrade the Ceph version. Each OpenStack-Ansible release is tested only with specific Ceph-Ansible release and Ceph upgrades are not checked in any Openstack-Ansible integration tests. So we do not test or guarantee an upgrade path for such deployments. In this case tests should be done in a lab environment before upgrading.
Warning
Ceph related playbooks are included as part of openstack.osa.setup_infrastructure
and openstack.osa.setup_openstack playbooks, so you should be cautious when
running them during OpenStack upgrades.
If you have upgrade_ceph_packages: true in your user variables or
provided -e upgrade_ceph_packages=true as argument and run
setup-infrastructure.yml this will result in Ceph package being upgraded
as well.
In order to upgrade Ceph in the deployment you will need to run:
# openstack-ansible /etc/ansible/roles/ceph-ansible/infrastructure-playbooks/rolling_update.yml
