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.. _multi-region:
=============================
Support for OpenStack regions
=============================
Murano supports multi-region deployment. If OpenStack setup has several regions
it is possible to choose the region to deploy an application.
There is the new option in the murano configuration file:
* `home_region` - default region name used to get services
endpoints. The region where murano-api resides.
Now murano has two possible ways to deploy apps in different regions:
1. Deploy an application in the current murano region.
2. Associate environments with regions.
Deploy an app in the current region
===================================
Each region has a copy of murano services and its own RabbitMQ for api to
engine communication. In this case application will be deployed to the same
region that murano run in.
.. seealso::
:ref:`multi_region`
Associate environments with regions
===================================
Murano services are in one region but environments can be associated with
different regions. There are two new properties in the class
`io.murano.Environment`:
* `regionConfigs` - a dict with RabbitMQ settings for each region. The
structure of the agentRabbitMq part of the dict is identical to [rabbitmq]
section in the `murano.conf` file. For example:
.. code-block:: yaml
regionConfigs:
RegionOne:
agentRabbitMq:
host: 192.1.1.1
login: admin
password: admin
User can store such configs as YAML or JSON files. These config files must
be stored in a special folder that is configured in [engine] section of
`murano.conf` file under `class_configs` key and must be named using
%FQ class name%.json or %FQ class name%.yaml pattern.
* `region` - region name to deploy an app. It can be passed when creating
environment via CLI:
.. code-block:: console
murano environment-create environment_name --region RegionOne
If it is not specified a value from `home_region` option of `murano.conf`
file will be used.
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