OpenStack-Ansible Magnum¶

Ansible role that installs and configures OpenStack Magnum. Magnum is installed behind the Apache webserver listening on port 9511 by default.

To clone or view the source code for this repository, visit the role repository for os_magnum.

Default variables¶

## Verbosity Options
debug: False

#python venv executable
magnum_venv_python_executable: "{{ openstack_venv_python_executable | default('python2') }}"

# Enable/Disable Ceilometer
magnum_ceilometer_enabled: False

# Set the host which will execute the shade modules
# for the service setup. The host must already have
# clouds.yaml properly configured.
magnum_service_setup_host: "{{ openstack_service_setup_host | default('localhost') }}"
magnum_service_setup_host_python_interpreter: "{{ openstack_service_setup_host_python_interpreter | default((magnum_service_setup_host == 'localhost') | ternary(ansible_playbook_python, ansible_python['executable'])) }}"

# Set the package install state for distribution and pip packages
# Options are 'present' and 'latest'
magnum_package_state: "latest"
magnum_pip_package_state: "latest"

magnum_system_group_name: magnum
magnum_system_user_name: magnum
magnum_system_user_comment: Magnum System User
magnum_system_user_shell: /bin/false
magnum_system_user_home: "/var/lib/{{ magnum_system_user_name }}"
magnum_etc_directory: /etc/magnum

magnum_service_name: magnum
magnum_service_user_name: magnum
magnum_service_type: container-infra
magnum_service_description: "OpenStack Containers (Magnum)"
magnum_service_project_name: service
magnum_service_role_names:
  - admin
magnum_service_region: RegionOne
magnum_barbican_service_region: "{{ magnum_service_region }}"
magnum_cinder_service_region: "{{ magnum_service_region }}"
magnum_glance_service_region: "{{ magnum_service_region }}"
magnum_heat_service_region: "{{ magnum_service_region }}"
magnum_neutron_service_region: "{{ magnum_service_region }}"
magnum_nova_service_region: "{{ magnum_service_region }}"
magnum_keystone_service_region: "{{ magnum_service_region }}"
magnum_bind_port: 9511
magnum_service_publicuri_proto: http
magnum_service_publicurl: "{{ magnum_service_publicuri_proto }}://{{ external_lb_vip_address }}:{{ magnum_bind_port }}"
magnum_service_internaluri_proto: http
magnum_service_internalurl: "{{ magnum_service_internaluri_proto }}://{{ internal_lb_vip_address }}:{{ magnum_bind_port }}"
magnum_service_adminuri_proto: http
magnum_service_adminurl: "{{ magnum_service_adminuri_proto }}://{{ internal_lb_vip_address }}:{{ magnum_bind_port }}"

magnum_config_overrides: {}
magnum_policy_overrides: {}
magnum_api_paste_ini_overrides: {}
magnum_keystone_auth_default_policy: []

magnum_pip_install_args: "{{ pip_install_options | default('') }}"

# Name of the virtual env to deploy into
magnum_venv_tag: "{{ venv_tag | default('untagged') }}"
magnum_venv_path: "/openstack/venvs/magnum-{{ magnum_venv_tag }}"
magnum_bin: "{{ magnum_venv_path }}/bin"

magnum_git_repo: "https://opendev.org/openstack/magnum"
magnum_git_install_branch: master
magnum_upper_constraints_url: "{{ requirements_git_url | default('https://releases.openstack.org/constraints/upper/' ~ requirements_git_install_branch | default('master')) }}"
magnum_git_constraints:
  - "git+{{ magnum_git_repo }}@{{ magnum_git_install_branch }}#egg=magnum"
  - "--constraint {{ magnum_upper_constraints_url }}"

# Database vars
magnum_db_setup_host: "{{ ('galera_all' in groups) | ternary(groups['galera_all'][0], 'localhost') }}"
magnum_galera_address: "{{ galera_address | default('127.0.0.1') }}"
magnum_galera_database_name: magnum_service
magnum_galera_user: magnum
magnum_galera_use_ssl: "{{ galera_use_ssl | default(False) }}"
magnum_galera_ssl_ca_cert: "{{ galera_ssl_ca_cert | default('/etc/ssl/certs/galera-ca.pem') }}"

# Oslo Messaging vars
# RPC
magnum_oslomsg_rpc_host_group: "{{ oslomsg_rpc_host_group | default('rabbitmq_all') }}"
magnum_oslomsg_rpc_setup_host: "{{ (magnum_oslomsg_rpc_host_group in groups) | ternary(groups[magnum_oslomsg_rpc_host_group][0], 'localhost') }}"
magnum_oslomsg_rpc_transport: "{{ oslomsg_rpc_transport | default('rabbit') }}"
magnum_oslomsg_rpc_servers: "{{ oslomsg_rpc_servers | default('127.0.0.1') }}"
magnum_oslomsg_rpc_port: "{{ oslomsg_rpc_port | default('5672') }}"
magnum_oslomsg_rpc_use_ssl: "{{ oslomsg_rpc_use_ssl | default(False) }}"
magnum_oslomsg_rpc_userid: magnum
magnum_oslomsg_rpc_vhost: /magnum

# Notify
magnum_oslomsg_notify_host_group: "{{ oslomsg_notify_host_group | default('rabbitmq_all') }}"
magnum_oslomsg_notify_setup_host: "{{ (magnum_oslomsg_notify_host_group in groups) | ternary(groups[magnum_oslomsg_notify_host_group][0], 'localhost') }}"
magnum_oslomsg_notify_transport: "{{ oslomsg_notify_transport | default('rabbit') }}"
magnum_oslomsg_notify_servers: "{{ oslomsg_notify_servers | default('127.0.0.1') }}"
magnum_oslomsg_notify_port: "{{ oslomsg_notify_port | default('5672') }}"
magnum_oslomsg_notify_use_ssl: "{{ oslomsg_notify_use_ssl | default(False) }}"
magnum_oslomsg_notify_userid: "{{ magnum_oslomsg_rpc_userid }}"
magnum_oslomsg_notify_password: "{{ magnum_oslomsg_rpc_password }}"
magnum_oslomsg_notify_vhost: "{{ magnum_oslomsg_rpc_vhost }}"

## (Qdrouterd) integration
# TODO(ansmith): Change structure when more backends will be supported
magnum_oslomsg_amqp1_enabled: "{{ magnum_oslomsg_rpc_transport == 'amqp' }}"

# Keystone AuthToken/Middleware
magnum_keystone_auth_plugin: password
magnum_service_project_domain_name: Default
magnum_service_user_domain_name: default

# Trustee User
magnum_trustee_domain_admin_name: trustee_domain_admin
magnum_trustee_domain_name: magnum
magnum_trustee_domain_admin_roles: ['admin']
magnum_cluster_user_trust: True

#Glance images
## Example Glance Image - Fedora Atomic
#  - name: fedora-atomic-latest         #Name of the image in Glance
#    disk_format: qcow2                 #Disk format (e.g. qcow2)
#    image_format: bare                 #Image format
#    public: true                       #Boolean - is the image public
#    file: https://builds.coreos.fedoraproject.org/prod/streams/stable/builds/31.20200210.3.0/x86_64/fedora-coreos-31.20200210.3.0-openstack.x86_64.qcow2.xz
#    distro: fedora-atomic              #Value for the os_distro metadata
#    checksum: "sha256:9a5252e24b82a5edb1ce75b05653f59895685b0f1028112462e908a12deae518"
magnum_glance_images: []

# Define cluster templates to create. It should be list of
# dictionaries with keys that are supported by os_coe_cluster_template
# module (https://docs.ansible.com/ansible/latest/modules/os_coe_cluster_template_module.html)
#magnum_cluster_templates:
#  - name: k8s
#    cloud: default
#    coe: kubernetes
#    docker_volume_size: 50
#    external_network_id: public
#    network_driver: flannel
magnum_cluster_templates: []

# Create extra flavors to be used by magnum cluster template. It should be list
# of dictionaries with keys that are supported by os_nova_flavor module
# (https://docs.ansible.com/ansible/latest/modules/os_nova_flavor_module.html)
#magnum_flavors:
#  - name: k8s-pod
#    cloud: default
#    ram: 256
#    vcpus: 1
#    disk: 5
magnum_flavors: []

# Set the directory where the downloaded images will be stored
# on the magnum_service_setup_host host. If the host is localhost,
# then the user running the playbook must have access to it.
magnum_image_path: "{{ lookup('env', 'HOME') }}/openstack-ansible/magnum"
magnum_image_path_owner: "{{ lookup('env', 'USER') }}"

magnum_pip_packages:
  - magnum
  - osprofiler
  - PyMySQL
  - pymemcache
  - python-memcached
  - systemd-python

# Memcached override
magnum_memcached_servers: "{{ memcached_servers }}"

# Specific pip packages provided by the user
magnum_user_pip_packages: []

magnum_optional_oslomsg_amqp1_pip_packages:
  - oslo.messaging[amqp1]

# Store certificates in DB by default (x509keypair)
# Other valid values are: barbican, local
magnum_cert_manager_type: x509keypair

magnum_api_init_config_overrides: {}
magnum_conductor_init_config_overrides: {}

magnum_services:
  magnum-conductor:
    group: magnum_all
    service_name: magnum-conductor
    execstarts: "{{ magnum_bin }}/magnum-conductor"
    init_config_overrides: "{{ magnum_conductor_init_config_overrides }}"
    start_order: 1
  magnum-api:
    group: magnum_all
    service_name: magnum-api
    init_config_overrides: "{{ magnum_api_init_config_overrides }}"
    start_order: 2
    wsgi_app: True
    wsgi_path: "{{ magnum_bin }}/magnum-api-wsgi"
    uwsgi_overrides: "{{ magnum_api_uwsgi_ini_overrides }}"
    uwsgi_port: "{{ magnum_bind_port }}"
    uwsgi_bind_address: "{{ magnum_api_uwsgi_bind_address }}"

# uWSGI Settings
magnum_api_uwsgi_ini_overrides: {}
magnum_wsgi_processes_max: 16
magnum_wsgi_processes: "{{ [[ansible_processor_vcpus|default(1), 1] | max * 2, magnum_wsgi_processes_max] | min }}"
magnum_wsgi_threads: 1
magnum_api_uwsgi_bind_address: "{{ openstack_service_bind_address | default('0.0.0.0') }}"

Dependencies¶

This role needs pip >= 7.1 installed on the target host.

To use this role, define the following variables:

# Magnum TCP listening port
magnum_service_port: 9511

# Magnum service protocol http or https
magnum_service_proto: http

# Magnum Galera address of internal load balancer
magnum_galera_address: "{{ internal_lb_vip_address }}"

# Magnum Galera database name
magnum_galera_database_name: magnum_service

# Magnum Galera username
magnum_galera_user: magnum

# Magnum rpc userid
magnum_oslomsg_rpc_userid: magnum

# Magnum rpc vhost
magnum_oslomsg_rpc_vhost: /magnum

# Magnum notify userid
magnum_oslomsg_notify_userid: magnum

# Magnum notify vhost
magnum_oslomsg_notify_vhost: /magnum

This list is not exhaustive. See role internals for further details.

Wiring docker with cinder¶

If you need to use volumes, default_docker_volume_type should be set. By default, Magnum doesn’t need one.

To deploy Magnum with cinder integration, please set the following in your /etc/openstack_deploy/user_variables.yml:

magnum_config_overrides:
  cinder:
    default_docker_volume_type: lvm

If you have defined cinder_default_volume_type for all your nodes, by defining it in your user_variables, you can re-use it directly:

magnum_config_overrides:
  cinder:
    default_docker_volume_type: "{{ cinder_default_volume_type }}"

Example playbook¶

---
- name: Install Magnum server
  hosts: magnum_all
  user: root
  roles:
    - { role: "os_magnum", tags: [ "os-magnum" ] }
  vars:
    magnum_galera_address: "{{ internal_lb_vip_address }}"
    magnum_galera_password: secrete
    magnum_service_password: secrete
    magnum_oslomsg_rpc_password: secrete
    magnum_trustee_password: secrete

Tags¶

This role supports two tags: magnum-install and magnum-config. The magnum-install tag can be used to install and upgrade. The magnum-config tag can be used to maintain configuration of the service.

OpenStack-Ansible Magnum