OpenStack-Ansible mistral role¶
This role installs the following Systemd services:
mistral-api
mistral-engine
mistral-executor
mistral-notifier
To clone or view the source code for this repository, visit the role repository for os_mistral.
Default variables¶
# Installation method
mistral_install_method: "{{ service_install_method | default('source') }}"
mistral_venv_python_executable: "{{ openstack_venv_python_executable | default('python3') }}"
# Operating system user & groups
mistral_system_user_name: mistral
mistral_system_group_name: mistral
mistral_system_shell: /sbin/nologin
mistral_system_comment: Mistral Daemons
mistral_system_user_home: /var/lib/mistral
# Distribution deployment
mistral_package_state: "{{ package_state | default('latest') }}"
# Source package builds
mistral_git_repo: https://opendev.org/openstack/mistral
mistral_git_install_branch: master
mistral_extra_git_repo: https://opendev.org/openstack/mistral-extra
mistral_extra_git_install_branch: master
mistral_upper_constraints_url: >-
{{ requirements_git_url | default('https://releases.openstack.org/constraints/upper/' ~ requirements_git_install_branch | default('master')) }}
mistral_git_constraints:
- "--constraint {{ mistral_upper_constraints_url }}"
mistral_pip_packages:
- "git+{{ mistral_git_repo }}@{{ mistral_git_install_branch }}#egg=mistral"
- "git+{{ mistral_extra_git_repo }}@{{ mistral_extra_git_install_branch }}#egg=mistral-extra"
- PyMySQL
- pymemcache
- python-memcached
- systemd-python
mistral_optional_oslomsg_amqp1_pip_packages:
- oslo.messaging[amqp1]
mistral_venv_tag: "{{ venv_tag | default('untagged') }}"
mistral_bin: "{{ _mistral_bin }}"
mistral_pip_install_args: "{{ pip_install_options | default('') }}"
mistral_memcached_servers: "{{ memcached_servers }}"
mistral_api_use_uwsgi: true
# Services
mistral_services:
mistral-notifier:
group: mistral_notifier
service_name: mistral-notifier
init_config_overrides: "{{ mistral_notifier_init_overrides }}"
start_order: 1
execstarts: "{{ _mistral_bin }}/mistral-server --server notifier"
mistral-executor:
group: mistral_executor
service_name: mistral-executor
init_config_overrides: "{{ mistral_executor_init_overrides }}"
start_order: 1
execstarts: "{{ _mistral_bin }}/mistral-server --server executor"
mistral-engine:
group: mistral_engine
service_name: mistral-engine
init_config_overrides: "{{ mistral_engine_init_overrides }}"
start_order: 1
execstarts: "{{ _mistral_bin }}/mistral-server --server engine"
mistral-api:
group: mistral_api
service_name: mistral-api
init_config_overrides: "{{ mistral_api_init_overrides }}"
start_order: 2
execstarts: "{{ _mistral_bin }}/mistral-server --server api"
wsgi_app: "{{ mistral_api_use_uwsgi }}"
wsgi_name: mistral-wsgi-api
uwsgi_overrides: "{{ mistral_api_uwsgi_ini_overrides }}"
uwsgi_bind_address: "{{ mistral_bind_address }}"
uwsgi_port: "{{ mistral_service_port }}"
uwsgi_tls: "{{ mistral_backend_ssl | ternary(mistral_uwsgi_tls, {}) }}"
# UWSGI settings
mistral_wsgi_processes_max: 16
mistral_wsgi_processes: >-
{{ [[(ansible_facts['processor_vcpus'] // ansible_facts['processor_threads_per_core']) | default(1), 1] | max * 2, mistral_wsgi_processes_max] | min }}
mistral_wsgi_threads: 1
mistral_uwsgi_tls:
crt: "{{ mistral_ssl_cert }}"
key: "{{ mistral_ssl_key }}"
# RPC
mistral_oslomsg_rpc_host_group: "{{ oslomsg_rpc_host_group | default('rabbitmq_all') }}"
mistral_oslomsg_rpc_setup_host: "{{ (mistral_oslomsg_rpc_host_group in groups) | ternary(groups[mistral_oslomsg_rpc_host_group][0], 'localhost') }}"
mistral_oslomsg_rpc_transport: "{{ oslomsg_rpc_transport | default('rabbit') }}"
mistral_oslomsg_rpc_servers: "{{ oslomsg_rpc_servers | default('127.0.0.1') }}"
mistral_oslomsg_rpc_port: "{{ oslomsg_rpc_port | default('5672') }}"
mistral_oslomsg_rpc_use_ssl: "{{ oslomsg_rpc_use_ssl | default(False) }}"
mistral_oslomsg_rpc_userid: mistral
mistral_oslomsg_rpc_policies: []
# vhost name depends on value of oslomsg_rabbit_quorum_queues. In case quorum queues
# are not used - vhost name will be prefixed with leading `/`.
mistral_oslomsg_rpc_vhost:
- name: /mistral
state: "{{ mistral_oslomsg_rabbit_quorum_queues | ternary('absent', 'present') }}"
- name: mistral
state: "{{ mistral_oslomsg_rabbit_quorum_queues | ternary('present', 'absent') }}"
mistral_oslomsg_rpc_ssl_version: "{{ oslomsg_rpc_ssl_version | default('TLSv1_2') }}"
mistral_oslomsg_rpc_ssl_ca_file: "{{ oslomsg_rpc_ssl_ca_file | default('') }}"
# Notify
mistral_oslomsg_notify_configure: "{{ oslomsg_notify_configure | default(False) }}"
mistral_oslomsg_notify_host_group: "{{ oslomsg_notify_host_group | default('rabbitmq_all') }}"
mistral_oslomsg_notify_setup_host: "{{ (mistral_oslomsg_notify_host_group in groups) | ternary(groups[mistral_oslomsg_notify_host_group][0], 'localhost') }}"
mistral_oslomsg_notify_transport: "{{ oslomsg_notify_transport | default('rabbit') }}"
mistral_oslomsg_notify_servers: "{{ oslomsg_notify_servers | default('127.0.0.1') }}"
mistral_oslomsg_notify_port: "{{ oslomsg_notify_port | default('5672') }}"
mistral_oslomsg_notify_use_ssl: "{{ oslomsg_notify_use_ssl | default(False) }}"
mistral_oslomsg_notify_userid: "{{ mistral_oslomsg_rpc_userid }}"
mistral_oslomsg_notify_password: "{{ mistral_oslomsg_rpc_password }}"
mistral_oslomsg_notify_vhost: "{{ mistral_oslomsg_rpc_vhost }}"
mistral_oslomsg_notify_ssl_version: "{{ oslomsg_notify_ssl_version | default('TLSv1_2') }}"
mistral_oslomsg_notify_ssl_ca_file: "{{ oslomsg_notify_ssl_ca_file | default('') }}"
mistral_oslomsg_notify_policies: []
## RabbitMQ integration
mistral_oslomsg_rabbit_quorum_queues: "{{ oslomsg_rabbit_quorum_queues | default(True) }}"
mistral_oslomsg_rabbit_stream_fanout: "{{ oslomsg_rabbit_stream_fanout | default(mistral_oslomsg_rabbit_quorum_queues) }}"
mistral_oslomsg_rabbit_transient_quorum_queues: "{{ oslomsg_rabbit_transient_quorum_queues | default(mistral_oslomsg_rabbit_stream_fanout) }}"
mistral_oslomsg_rabbit_qos_prefetch_count: "{{ oslomsg_rabbit_qos_prefetch_count | default(mistral_oslomsg_rabbit_stream_fanout | ternary(10, 0)) }}"
mistral_oslomsg_rabbit_queue_manager: "{{ oslomsg_rabbit_queue_manager | default(mistral_oslomsg_rabbit_quorum_queues) }}"
mistral_oslomsg_rabbit_quorum_delivery_limit: "{{ oslomsg_rabbit_quorum_delivery_limit | default(0) }}"
mistral_oslomsg_rabbit_quorum_max_memory_bytes: "{{ oslomsg_rabbit_quorum_max_memory_bytes | default(0) }}"
# (Qdrouterd) integration
mistral_oslomsg_amqp1_enabled: "{{ mistral_oslomsg_rpc_transport == 'amqp' }}"
# Database
mistral_db_setup_host: "{{ openstack_db_setup_host | default('localhost') }}"
mistral_db_setup_python_interpreter: >-
{{
openstack_db_setup_python_interpreter | default(
(mistral_db_setup_host == 'localhost') | ternary(ansible_playbook_python, ansible_facts['python']['executable']))
}}
mistral_galera_address: "{{ galera_address | default('127.0.0.1') }}"
mistral_galera_database: mistral
mistral_galera_user: mistral
mistral_galera_use_ssl: "{{ galera_use_ssl | default(False) }}"
mistral_galera_ssl_ca_cert: "{{ galera_ssl_ca_cert | default('') }}"
mistral_galera_port: "{{ galera_port | default('3306') }}"
mistral_db_max_overflow: "{{ openstack_db_max_overflow | default('50') }}"
mistral_db_max_pool_size: "{{ openstack_db_max_pool_size | default('5') }}"
mistral_db_pool_timeout: "{{ openstack_db_pool_timeout | default('30') }}"
mistral_db_connection_recycle_time: "{{ openstack_db_connection_recycle_time | default('600') }}"
# Configuration options
mistral_debug: "{{ debug | default(false) }}"
mistral_bind_address: "{{ openstack_service_bind_address | default('0.0.0.0') }}"
mistral_service_port: 8989
# Overrides
mistral_notifier_init_overrides: {}
mistral_executor_init_overrides: {}
mistral_engine_init_overrides: {}
mistral_api_init_overrides: {}
mistral_api_uwsgi_ini_overrides: {}
mistral_mistral_conf_overrides: {}
mistral_policy_overrides: {}
# Service setup
mistral_service_setup_host: "{{ openstack_service_setup_host | default('localhost') }}"
mistral_service_setup_host_python_interpreter: >-
{{
openstack_service_setup_host_python_interpreter | default(
(mistral_service_setup_host == 'localhost') | ternary(ansible_playbook_python, ansible_facts['python']['executable']))
}}
mistral_service_name: mistral
mistral_service_type: workflowv2
mistral_service_description: OpenStack Workflow service
mistral_service_in_ldap: "{{ service_ldap_backend_enabled | default(False) }}"
mistral_service_user_domain_id: default
mistral_service_user_name: mistral
mistral_service_project_domain_id: default
mistral_service_project_name: service
mistral_service_role_names:
- admin
- service
mistral_service_token_roles:
- service
mistral_service_token_roles_required: "{{ openstack_service_token_roles_required | default(True) }}"
mistral_service_region: "{{ service_region | default('RegionOne') }}"
mistral_service_proto: http
mistral_service_publicuri_proto: "{{ openstack_service_publicuri_proto | default(mistral_service_proto) }}"
mistral_service_publicurl: "{{ mistral_service_publicuri_proto }}://{{ external_lb_vip_address }}:{{ mistral_service_port }}/v2"
mistral_service_internaluri_proto: "{{ openstack_service_internaluri_proto | default(mistral_service_proto) }}"
mistral_service_internalurl: "{{ mistral_service_internaluri_proto }}://{{ internal_lb_vip_address }}:{{ mistral_service_port }}/v2"
mistral_service_adminuri_proto: "{{ openstack_service_adminuri_proto | default(mistral_service_proto) }}"
mistral_service_adminurl: "{{ mistral_service_adminuri_proto }}://{{ internal_lb_vip_address }}:{{ mistral_service_port }}/v2"
# Specific pip packages provided by the user
mistral_user_pip_packages: []
###
### Backend TLS
###
# Define if communication between haproxy and service backends should be
# encrypted with TLS.
mistral_backend_ssl: "{{ openstack_service_backend_ssl | default(False) }}"
# Storage location for SSL certificate authority
mistral_pki_dir: "{{ openstack_pki_dir | default('/etc/openstack_deploy/pki') }}"
# Delegated host for operating the certificate authority
mistral_pki_setup_host: "{{ openstack_pki_setup_host | default('localhost') }}"
# mistral server certificate
mistral_pki_keys_path: "{{ mistral_pki_dir ~ '/certs/private/' }}"
mistral_pki_certs_path: "{{ mistral_pki_dir ~ '/certs/certs/' }}"
mistral_pki_intermediate_cert_name: "{{ openstack_pki_service_intermediate_cert_name | default('ExampleCorpIntermediate') }}"
mistral_pki_regen_cert: ''
mistral_pki_san: "{{ openstack_pki_san | default('DNS:' ~ ansible_facts['hostname'] ~ ',IP:' ~ management_address) }}"
mistral_pki_certificates:
- name: "mistral_{{ ansible_facts['hostname'] }}"
provider: ownca
cn: "{{ ansible_facts['hostname'] }}"
san: "{{ mistral_pki_san }}"
signed_by: "{{ mistral_pki_intermediate_cert_name }}"
# mistral destination files for SSL certificates
mistral_ssl_cert: /etc/mistral/mistral.pem
mistral_ssl_key: /etc/mistral/mistral.key
# Installation details for SSL certificates
mistral_pki_install_certificates:
- src: "{{ mistral_user_ssl_cert | default(mistral_pki_certs_path ~ 'mistral_' ~ ansible_facts['hostname'] ~ '-chain.crt') }}"
dest: "{{ mistral_ssl_cert }}"
owner: "{{ mistral_system_user_name }}"
group: "{{ mistral_system_user_name }}"
mode: "0644"
- src: "{{ mistral_user_ssl_key | default(mistral_pki_keys_path ~ 'mistral_' ~ ansible_facts['hostname'] ~ '.key.pem') }}"
dest: "{{ mistral_ssl_key }}"
owner: "{{ mistral_system_user_name }}"
group: "{{ mistral_system_user_name }}"
mode: "0600"
# Define user-provided SSL certificates
# mistral_user_ssl_cert: <path to cert on ansible deployment host>
# mistral_user_ssl_key: <path to cert on ansible deployment host>
Example playbook¶
---
- name: Install mistral server
hosts: mistral_all
user: root
roles:
- role: "os_mistral"
tags:
- "os-mistral"
