openstack/tripleo-docs
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Add online data migration docs

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Change-Id: If7c562fb743c6f4babd5e14663bdb7f478181c5a
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Jiri Stransky 2018-10-18 13:29:47 +02:00
parent 06f222a220
commit 60411f9dbf
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doc/source/install/post_deployment/upgrade.rst
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@ -57,6 +57,10 @@ The upgrade workflow essentially consists of the following steps:
This step is only necessary if your deployment contains services
which are managed using external installers, e.g. Ceph.
#. `openstack overcloud external-upgrade run (for online upgrades)`_
Run the part of service upgrades which can run while the cloud is
fully operational, e.g. online data migrations.
#. `openstack overcloud upgrade converge`_.
Finally run a heat stack update, unsetting any upgrade specific variables
and leaving the heat stack in a healthy state for future updates.
@ -318,6 +322,37 @@ overclouds with Ceph.
parameters. It uses playbooks generated during `upgrade
prepare`.
openstack overcloud external-upgrade run (for online upgrades)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. admonition:: Queens to Rocky
:class: qtor
The offline (downtime inducing) part of upgrade has finished at this
point, and the cloud should be fully operational. Some services have
an online component to their upgrade procedure -- operations which
don't induce downtime and can run while the cloud operates
normally. For OpenStack services these are e.g. online data
migrations. Run all these online upgrade operations by executing the
following command:
.. code-block:: bash
openstack overcloud external-upgrade run --tags online_upgrade
.. note::
If desired, the online upgrades can be run per-service. E.g. to run
only Nova online data migrations, execute:
.. code-block:: bash
openstack overcloud external-upgrade run --tags online_upgrade_nova
However, when executing online upgrades in selective parts like
this, extra care must be taken to not miss any necessary online
upgrade operations.
openstack overcloud upgrade converge
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~