bifrost/playbooks/roles/bifrost-create-vm-nodes/tasks/create_vm.yml

# Copyright (c) 2017 Mirantis Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Create a VM and volume for it, save its MAC address
---
# NOTE(pas-ha) item here refers to name of the test vm
- set_fact:
    vm_name: "{{ item }}"
    vm_log_file: "{{ test_vm_logdir }}/{{ item }}_console.log"
    vm_host_group: "{{ test_vm_default_groups }}"

- set_fact:
    vm_host_group: "{{ test_vm_default_groups | union(test_vm_groups[vm_name]) }}"
  when: test_vm_groups[vm_name] is defined

- name: set prealloc arg for Debian
  set_fact:
    prealloc: "--prealloc-metadata"
  when:
    - "{{ ansible_os_family == 'Debian' }}"
    - "{{ test_vm_libvirt_uri == 'qemu:///system' }}"

- name: list info on pools
  virt_pool:
    command: facts
    uri: "{{ test_vm_libvirt_uri }}"

- name: list existing vms
  virt:
    command: list_vms
  register: existing_vms

# NOTE(pas-ha) wrapping in block/rescue to have diagnostic output, requires Ansible>=2
- block:
  # NOTE(pas-ha) Ansible still lacks modules to operate on libvirt volumes
  # NOTE(pas-ha) adding extra 1G for disk size to accomodate for partition table / configdrive
  - name: create volume for vm
    command: >
      virsh --connect {{ test_vm_libvirt_uri }}
      vol-create-as {{ test_vm_storage_pool }} {{ vm_name }}.qcow2
      {{ test_vm_disk_gib | int + 1 }}G
      --format qcow2 {{ prealloc|default("") }}      
    when: "{{ vm_name + '.qcow2' not in ansible_libvirt_pools[test_vm_storage_pool].volumes }}"

  - name: set path to the volume created
    set_fact:
      vm_volume_path: "{{ ansible_libvirt_pools[test_vm_storage_pool].path }}/{{ vm_name }}.qcow2"

  - name: pre-touch the vm volume
    file:
      state: touch
      path: "{{ vm_volume_path }}"
    when: "{{ test_vm_libvirt_uri == 'qemu:///system' }}"

  # NOTE(TheJulia): CentOS default installs with an XFS root, and chattr
  # fails to set +C on XFS.  This could be more elegant, however the use
  # case is for CI testing.
  - name: set copy-on-write for volume on non-CentOS systems
    command: chattr +C {{ vm_volume_path }}
    ignore_errors: yes
    when:
      - "{{ ansible_distribution != 'CentOS' }}"
      - "{{ test_vm_libvirt_uri == 'qemu:///system' }}"

  - name: create_vm
    virt:
      command: define
      name: "{{ vm_name }}"
      uri: "{{ test_vm_libvirt_uri }}"
      xml: "{{ lookup('template', 'testvm.xml.j2') }}"

  rescue:
    - name: "Execute `dmesg` to collect debugging output should VM creation fail."
      command: dmesg
    - name: >
        "Execute `virsh capabilities` to collect debugging output
        should VM creation fail."        
      command: virsh capabilities
    - name: "Abort due to failed VM creation"
      fail: >
        msg="VM creation step failed, please review dmesg
        output for additional details"        
  when: "{{ vm_name not in existing_vms.list_vms }}"

# TODO(pas-ha) replace 'command: vbmc ...' tasks
# with a custom Ansible module using vbmc Python API
- name: get list of nodes from virtualbmc
  command: vbmc list
  register: vbmc_list

# NOTE(NobodyCam): Space at the end of the find clause is required for proper matching.
- name: delete vm from virtualbmc if it is there
  command: vbmc delete {{ vm_name }}
  when: vbmc_list.stdout.find("{{ vm_name }} ") != -1

- set_fact:
    virtual_ipmi_port: "{{ (test_vm_ipmi_port_start|default(623) | int ) + (testvm_json_data | length) }}"

- name: plug vm into vbmc
  command: vbmc add {{ vm_name }} --libvirt-uri {{ test_vm_libvirt_uri }} --port {{ virtual_ipmi_port }}

- name: start virtualbmc
  command: vbmc start {{ vm_name }}

- name: get XML of the vm
  virt:
    name: "{{ vm_name }}"
    command: get_xml
  register: testvm_xml

# NOTE(pas-ha) relies on our XML template for VM that defines a single NIC
- name: get MAC from vm XML
  set_fact:
    vm_mac: "{{ (testvm_xml.get_xml | regex_findall(\"<mac address='.*'/>\") | first).split('=') | last | regex_replace(\"['/>]\", '') }}"

# NOTE(pas-ha) using default username and password set by virtualbmc - "admin" and "password" respectively
# see vbmc add --help
- name: set the json entry for vm
  set_fact:
    testvm_data:
      name: "{{ vm_name }}"
      uuid: "{{ vm_name | to_uuid }}"
      host_groups: "{{ vm_host_group }}"
      driver: "{{ test_vm_node_driver|default('agent_ipmitool') }}"
      driver_info:
        power:
          ipmi_address: "192.168.122.1"
          ipmi_port: "{{ virtual_ipmi_port }}"
          ipmi_username: "admin"
          ipmi_password: "password"
      nics:
        - mac: "{{ vm_mac }}"
      ansible_ssh_host: "192.168.122.{{ testvm_json_data | length + 2 }}"
      ipv4_address: "192.168.122.{{ testvm_json_data | length + 2 }}"
      properties:
        cpu_arch: "{{ test_vm_arch }}"
        ram: "{{ test_vm_memory_size }}"
        cpus: "{{ test_vm_cpu_count }}"
        disk_size: "{{ test_vm_disk_gib }}"

- name: add created vm info
  set_fact:
    testvm_json_data: "{{ testvm_json_data | combine({vm_name: testvm_data}) }}"