2fd324357b
This patch adds support for upgrading Redis datastore - both single
instance and cluster.
It is achievied in a similar way to MySQL/Mariadb. Steps are:
+ For each node do:
+ stop database
+ preserve configuration files,
+ unmount data volume,
+ create new instance with new datastore,
+ enter restarting mode
+ mount data volume,
+ restore configuration files,
+ reload datastore
Note that due to the Redis Cluster design and Trove approach (all
nodes are master nodes) we do not perform real rolling upgrade - some
Redis slots may be unavailable while upgrading node associated with
them.
This patch adds also a user documentation about upgrading datastores
using Redis as an example.
Story: #2005421
Task: #30443
Co-Authored-By: Kasper Hasior <k.hasior@samsung.com>
Change-Id: I60cddb3a41d2cc7024cbec3d2fd2038d79446507
Signed-off-by: Kasper Hasior <k.hasior@samsung.com>
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===========================
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Database Service User Guide
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===========================
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The Database service provides scalable and reliable cloud provisioning
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functionality for both relational and non-relational database engines.
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Users can quickly and easily use database features without the burden of
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handling complex administrative tasks.
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.. toctree::
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:maxdepth: 1
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create-db.rst
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manage-db-and-users.rst
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backup-db.rst
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backup-db-incremental.rst
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manage-db-config.rst
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set-up-replication.rst
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set-up-clustering.rst
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upgrade-datastore.rst
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upgrade-cluster-datastore.rst
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