8e8e839ef7
The request spec that is used for scheduling the instance should be persisted early in the boot process. This is to support cellsv2 where the instance is not going to be created in the db until scheduling has occurred. The persisted request spec is one of the pieces needed to respond to api list/show requests for unscheduled instances. The persisted request spec will also be used by resize/migration/live-migrate operations to ensure that the instance is scheduled to a host that fulfills the same constraints as the current host. Because there are a lot of tests that execute the boot path and are backed by a database a new fixture was added to test.TestCase to instantiate the api db if USE_DB is true. With this change the api db will be more frequently needed. NB: The request spec will not be persisted within a v1 cell and therefore not be available for later resize/migration operations when using cellsv1. Finally, a releasenote is being added explaining that the nova_api database needs to be setup at this point. RequestSpec.create() is the first piece of code, outside of nova-manage commands, that uses the api database. Partially-implements: bp cells-scheduling-interaction Change-Id: Idd4bbbe8eea68b9e538fa1567efd304e9115a02a
20 lines
915 B
YAML
20 lines
915 B
YAML
---
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upgrade:
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The commit with change-id Idd4bbbe8eea68b9e538fa1567efd304e9115a02a
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requires that the nova_api database is setup and Nova is configured to use
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it. Instructions on doing that are provided below.
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Nova now requires that two databases are available and configured. The
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existing nova database needs no changes, but a new nova_api database needs
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to be setup. It is configured and managed very similarly to the nova
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database. A new connection string configuration option is available in the
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api_database group. An example::
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[api_database]
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connection = mysql+pymysql://user:secret@127.0.0.1/nova_api?charset=utf8
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And a new nova-manage command has been added to manage db migrations for
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this database. "nova-manage api_db sync" and "nova-manage api_db version"
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are available and function like the parallel "nova-manage db ..." version.
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