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---
features:
- |
The 2.94 microversion has been added. This microversion extends
microversion 2.90 by allowing Fully Qualified Domain Names (FQDN) wherever
the ``hostname`` is able to be specified. This consists of creating an
instance (``POST /servers``), updating an instance
(``PUT /servers/{id}``), or rebuilding an instance
(``POST /servers/{server_id}/action (rebuild)``). When using an FQDN as the
instance hostname, the ``[api]dhcp_domain`` configuration option must be
set to the empty string in order for the correct FQDN to appear in the
``hostname`` field in the metadata API.
upgrade:
- |
In order to make use of microversion's 2.94 FQDN hostnames, the
``[api]dhcp_domain`` config option must be set to the empty string. If
this is not done, the ``hostname`` field in the metadata API will be
incorrect, as it will include the value of ``[api]dhcp_domain`` appended to
the instance's FQDN. Note that simply not setting ``[api]dhcp_domain`` is
not enough, as it has a default value of ``novalocal``. It must explicitly
be set to the empty string.
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