DEPRECATED, Neutron integration with OVN
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networking-ovn/migration/tripleo_environment/playbooks/ovn-migration.yml

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# This is the playbook used by ovn-migration.sh.
#
# Pre migration and validation tasks will make sure that the initial cloud
# is functional, and will create resources which will be checked after
# migration.
#
- name: Pre migration and validation tasks
hosts: localhost
roles:
- pre-migration
tags:
- pre-migration
#
# This step is executed before migration, and will backup some config
# files related to containers before those get lost.
#
- name: Backup tripleo container config files on the nodes
hosts: ovn-controllers
roles:
- backup
tags:
- setup
#
# TripleO / Director is executed to deploy ovn using "br-migration" for the
# dataplane, while br-int is left intact to avoid dataplane disruption.
#
- name: Set up OVN and configure it using tripleo
hosts: localhost
roles:
- tripleo-update
vars:
ovn_bridge: br-migration
tags:
- setup
become: false
#
# Once everything is migrated prepare everything by syncing the neutron DB
# into the OVN NB database, and then switching the dataplane to br-int
# letting ovn-controller take control, afterwards any remaining neutron
# resources, namespaces or processes which are not needed anymore are
# cleaned up.
#
- name: Do the DB sync and dataplane switch
hosts: ovn-controllers, ovn-dbs
roles:
- migration
vars:
ovn_bridge: br-int
tags:
- migration
#
# Verify that the initial resources are still reachable, remove them,
# and afterwards create new resources and repeat the connectivity tests.
#
- name: Post migration
hosts: localhost
roles:
- delete-neutron-resources
- post-migration
tags:
- post-migration
#
# Final step to make sure tripleo knows about OVNIntegrationBridge == br-int.
#
- name: Rerun the stack update to reset the OVNIntegrationBridge to br-int
hosts: localhost
roles:
- tripleo-update
vars:
ovn_bridge: br-int
tags:
- setup
become: false
#
# Announce that it's done and ready.
#
- hosts: localhost
tasks:
- name: Migration successful.
debug:
msg: Migration from ML2OVS to OVN is now complete.