130 lines
4.3 KiB
ReStructuredText
130 lines
4.3 KiB
ReStructuredText
Mistral Configuration Guide
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===========================
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Mistral configuration is needed for getting it work correctly
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either with real OpenStack environment or without OpenStack environment.
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**NOTE:** The most of the following operations should performed in mistral
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directory.
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#. Generate *mistral.conf* (if it does not already exist)::
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$ oslo-config-generator --config-file tools/config/config-generator.mistral.conf --output-file /etc/mistral/mistral.conf
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#. Edit file **/etc/mistral/mistral.conf**.
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#. **If you are not using OpenStack, skip this item.** Provide valid keystone
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auth properties::
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[keystone_authtoken]
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auth_uri = http://<Keystone-host>:5000/v3
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identity_uri = http://<Keystone-host:35357
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auth_version = v3
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admin_user = <user>
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admin_password = <password>
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admin_tenant_name = <tenant>
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#. Mistral can be also configured to authenticate with Keycloak server via OpenID Connect protocol.
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In order to enable Keycloak authentication the following section should be in the config file::
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auth_type = keycloak-oidc
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[keycloak_oidc]
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auth_url = https://<Keycloak-server-host>:<Keycloak-server-port>/auth
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Property 'auth_type' is assigned to 'keystone' by default.
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If SSL/TLS verification needs to be disabled then 'insecure = True' should also be added
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under [keycloak_oidc] group.
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#. If you want to configure SSL for Mistral API server, provide following options
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in config file::
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[api]
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enable_ssl_api = True
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[ssl]
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ca_file = <path-to-ca file>
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cert_file = <path-to-certificate file>
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key_file = <path-to-key file>
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#. **If you don't use OpenStack or you want to disable authentication for the
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Mistral service**, provide ``auth_enable = False`` in the config file::
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[pecan]
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auth_enable = False
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#. **If you are not using OpenStack, skip this item**. Register Mistral service
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and Mistral endpoints on Keystone::
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$ MISTRAL_URL="http://[host]:[port]/v2"
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$ openstack service create workflowv2 --name mistral --description 'OpenStack Workflow service'
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$ openstack endpoint create workflowv2 public $MISTRAL_URL
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$ openstack endpoint create workflowv2 internal $MISTRAL_URL
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$ openstack endpoint create workflowv2 admin $MISTRAL_URL
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#. Configure transport properties in the [DEFAULT] section::
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[DEFAULT]
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transport_url = rabbit://<user_id>:<password>@<host>:5672/
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#. Configure database. **SQLite can't be used in production**. Use *MySQL* or
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*PostgreSQL* instead. Here are the steps how to connect *MySQL* DB to Mistral:
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Make sure you have installed **mysql-server** package on your database machine
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(it can be your Mistral machine as well).
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Install MySQL driver for python::
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$ pip install mysql-python
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Create the database and grant privileges::
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$ mysql -u root -p
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CREATE DATABASE mistral;
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USE mistral
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GRANT ALL ON mistral.* TO 'root':<password>@<database-host>;
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Configure connection in Mistral config::
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[database]
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connection = mysql://<user>:<password>@<database-host>:3306/mistral
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**NOTE**: If PostgreSQL is used, configure connection item as below::
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connection = postgresql://<user>:<password>@<database-host>:5432/mistral
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#. **If you are not using OpenStack, skip this item.**
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Update mistral/actions/openstack/mapping.json file which contains all allowed
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OpenStack actions, according to the specific client versions of OpenStack
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projects in your deployment. Please find more detailed information in
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tools/get_action_list.py script.
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#. Configure Task affinity feature if needed. It is needed for distinguishing
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either single task executor or one task executor from group of task executors::
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[executor]
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host = my_favorite_executor
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Then, this executor can be referred in Workflow Language by
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.. code-block:: yaml
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...Workflow YAML...
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my_task:
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...
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target: my_favorite_executor
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...Workflow YAML...
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#. Configure role based access policies for Mistral endpoints (policy.json)::
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[oslo_policy]
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policy_file = <path-of-policy.json file>
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Default policy.json file is in ``mistral/etc/``. For more details see `policy.json file <https://docs.openstack.org/ocata/config-reference/policy-json-file.html>`_.
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#. After that try to run mistral engine and see it is running without any error::
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$ mistral-server --config-file <path-to-config> --server engine
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