23 lines
1.1 KiB
YAML
23 lines
1.1 KiB
YAML
---
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upgrade:
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- |
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The database migration engine has changed from `sqlalchemy-migrate`__ to
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`alembic`__. For most deployments, this should have minimal to no impact
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and the switch should be mostly transparent. The main user-facing impact is
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the change in schema versioning. While sqlalchemy-migrate used a linear,
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integer-based versioning scheme, which required placeholder migrations to
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allow for potential migration backports, alembic uses a distributed version
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control-like schema where a migration's ancestor is encoded in the file and
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branches are possible. The alembic migration files therefore use a
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arbitrary UUID-like naming scheme and the ``masakari-manage db_sync``
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command now expects such an version when manually specifying the version
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that should be applied. For example::
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$ masakari-manage db sync c6214ca60943
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Attempting to specify an sqlalchemy-migrate-based version will result in an
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error.
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.. __: https://sqlalchemy-migrate.readthedocs.io/en/latest/
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.. __: https://alembic.sqlalchemy.org/en/latest/
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