37 lines
1.2 KiB
ReStructuredText
37 lines
1.2 KiB
ReStructuredText
.. _scale_roles:
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Scaling overcloud roles
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=======================
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If you want to increase or decrease resource capacity of a running overcloud,
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you can start more servers of a selected role or delete some servers if
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capacity should be decreased. To set the capacity for the compute role,
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first an environment file should be created::
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$ cat ~/environment.yaml
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parameter_defaults:
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ComputeCount: 5
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Then following command can be used to deploy it::
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openstack overcloud deploy --templates [templates dir] \
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-e <full environment> -e ~/environment.yaml
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.. note::
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It is especially important to remember that you **must** include all
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environment files that were used to deploy the overcloud. Make sure
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you pass those in addition to your customization environments at the
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end (`environment.yaml`).
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.. note::
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Scaling out assumes that newly added nodes has already been
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registered in Ironic.
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.. note::
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When scaling down random servers of specified role will be deleted, how to
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delete specific nodes is described in :ref:`delete_nodes`.
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.. note::
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The different scale parameters can be seen in the output of::
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openstack help overcloud deploy
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