neutron/tools/ovn_migration/infrared/tripleo-ovn-migration/main.yml

# Playbook which preps migration and then invokes the migration script.
- name: Install migration tool
  hosts: undercloud
  become: true
  tasks:
      - name: Install python 3 virtualenv and neutron ovn migration tool
        yum:
            name:
              - python3-virtualenv
              - python3-neutron-ovn-migration-tool
            state: present

      - name: Set host_key_checking to False in ansible.cfg
        ini_file:
            path=/etc/ansible/ansible.cfg
            section=defaults
            option=host_key_checking
            value=False
        ignore_errors: yes

- name: Prepare for migration
  hosts: undercloud
  tasks:
      - name: Set ovn migration working dir
        set_fact:
            ovn_migration_working_dir: /home/stack/ovn_migration

      - name: Delete temp file directory if present
        file:
            state: absent
            path: "{{ ovn_migration_working_dir }}"

      - name : Create temp file directory if not present
        file:
            state: directory
            path: "{{ ovn_migration_working_dir }}"

      - name: Set the image registry information
        block:
            - name: Get the image registry info (infrared deployment)
              block:
                  - name: Set is_infrard deployment
                    set_fact:
                        is_infrared: True

                  - name: Save the image reg
                    set_fact:
                        container_image_prepare:
                            namespace: "{{ install.get('registry', {}).namespace|default(False)|ternary(install.get('registry', {}).namespace, install.get('registry', {}).mirror + '/' + 'rhosp' +  install.version) }}"
                            prefix: "{{ install.registry.prefix|default('openstack') }}"
                            tag: "{{ install.registry.tag|default('') }}"
                            local_namespace: "{{ install.registry.local|default('') }}"
                            is_dvr: "{{ install.dvr }}"
              when:
                  - install is defined

            - name: Get the image registry info (tripleo deployment)
              block:
                  - name: Set is_infrard deployment
                    set_fact:
                        is_infrared: False

                  - name: Save the image reg
                    set_fact:
                        container_image_prepare:
                            namespace: "{{ registry_namespace }}"
                            local_namespace: "{{ registry_localnamespace }}"
                            prefix: "{{ registry_prefix }}"
                            tag: "{{ registry_tag }}"
                            is_dvr: "{{ dvr }}"
              when:
                  - install is not defined

      - name: Prepare for migration
        include_role:
           name: prepare-migration
        vars:
           infrared_deployment: "{{ is_infrared }}"
           registry_namespace: "{{ container_image_prepare['namespace'] }}"
           image_prefix: "{{ container_image_prepare['prefix'] }}"
           image_tag: "{{ container_image_prepare['tag'] }}"
           local_namespace: "{{ container_image_prepare['local_namespace'] }}"
           is_dvr: "{{ container_image_prepare['is_dvr'] }}"

- name: Boot few VMs to measure downtime
  hosts: undercloud
  tasks:
      - name: Check if need to create resources
        block:
            - name: Set create_vms (infrared)
              set_fact:
                  create_vms: "{{ install.create_resources }}"
              when:
                - install is defined

            - name: Set create_vms (tripleo deployment)
              set_fact:
                  create_vms: "{{ create_resources }}"
              when:
                - install is not defined

      - name: Create few resources
        block:
            - name: Set the public network name (infrared deployment)
              set_fact:
                  public_net: "{{ install.external_network }}"
              when: install is defined

            - name: Set the public network name (Tripleo deployment)
              set_fact:
                  public_net: "{{ external_network }}"
              when: install is not defined

            - name: Set the image name (infrared deployment)
              set_fact:
                  image_to_boot: "{{ install.image_name }}"
              when: install is defined

            - name: Set the image name(Tripleo deployment)
              set_fact:
                  image_to_boot: "{{ image_name }}"
              when: install is not defined

            - name: Create resources
              include_role:
                  name: create-resources
              vars:
                  public_network_name: "{{ public_net }}"
                  image_name: "{{ image_to_boot }}"
                  ovn_migration_temp_dir: /home/stack/ovn_migration
                  overcloudrc: /home/stack/overcloudrc
        when:
            - create_vms|bool

- name: Kick start the migration
  hosts: undercloud
  tasks:
      #TODO: Get the working dir from the param
      - name: Starting migration block
        block:
            - name: Set ovn migration working dir
              set_fact:
                  ovn_migration_working_dir: /home/stack/ovn_migration

            - name: Copy the playbook files into ovn_migration working dir
              command: cp -rf /usr/share/ansible/neutron-ovn-migration/playbooks {{ ovn_migration_working_dir }}

            - name: Set the public network name (infrared deployment)
              set_fact:
                  public_network: "{{ install.external_network }}"
              when: install is defined

            - name: Set the public network name (Tripleo deployment)
              set_fact:
                  public_network: "{{ external_network }}"
              when: install is not defined

            - name: Create ovn migration script
              template:
                  src: templates/start-ovn-migration.sh.j2
                  dest: "{{ ovn_migration_working_dir }}/start-ovn-migration.sh"
                  mode: 0755

            - name: Generate inventory file for ovn migration
              shell:
                  set -o pipefail &&
                  {{ ovn_migration_working_dir }}/start-ovn-migration.sh generate-inventory 2>&1 > {{ ovn_migration_working_dir}}/generate-inventory.log

            - name: Set DHCP T1 timer
              shell:
                  set -o pipefail &&
                  {{ ovn_migration_working_dir }}/start-ovn-migration.sh reduce-dhcp-t1 2>&1 > {{ ovn_migration_working_dir}}/reduce-dhcp-t1.log

            - name: Reduce mtu of the pre migration networks
              shell:
                  set -o pipefail &&
                  {{ ovn_migration_working_dir }}/start-ovn-migration.sh reduce-mtu 2>&1 > {{ ovn_migration_working_dir}}/reduce-mtu.log

            - name: Start the migration process
              shell:
                  set -o pipefail &&
                  {{ ovn_migration_working_dir }}/start-ovn-migration.sh start-migration 2>&1
                  > {{ ovn_migration_working_dir}}/start-ovn-migration.sh.log

            - name: Stop pinger if started
              shell:
                  echo "exit" > {{ ovn_migration_working_dir}}/_pinger_cmd.txt
        always:
            - name: Fetch ovn_migration log directory
              synchronize:
                  src: "{{ ovn_migration_working_dir }}"
                  dest: "{{ inventory_dir }}"
                  mode: pull
              when: install is defined