Overview¶

An OpenStack-Ansible environment can upgrade to a minor or a major version.

Upgrades between minor versions of OpenStack-Ansible require updating the repository clone to the latest minor release tag, and then running playbooks against the target hosts. For more information, see Executing a minor version upgrade.

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. A major upgrade process performs the following actions:

• Modifies files residing in the /etc/openstack_deploy directory, to reflect new configuration values.
• Places flag files that are created by the migration scripts in order to achieve idempotency. These files are placed in the /etc/openstack_deploy.NEWTON directory.
• Upgrades the RabbitMQ server. See setup-infrastructure.yml for details.

For more information about the major upgrade process, see Upgrading by using a script and Upgrading manually.