23 lines
1.3 KiB
YAML
23 lines
1.3 KiB
YAML
---
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features:
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- When booting an instance, its sanitized 'hostname' attribute is now used to
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populate the 'dns_name' attribute of the Neutron ports the instance is
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attached to.
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This functionality enables the Neutron internal DNS service to know the
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ports by the instance's hostname. As a consequence, commands like
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'hostname -f' will work as expected when executed in the instance.
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When a port's network has a non-blank 'dns_domain' attribute, the port's
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'dns_name' combined with the network's 'dns_domain' will be published by
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Neutron in an external DNS as a service like Designate. As a consequence,
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the instance's hostname is published in the external DNS as a service.
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This functionality is added to Nova when the 'DNS Integration' extension
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is enabled in Neutron.
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The publication of 'dns_name' and 'dns_domain' combinations to an external
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DNS as a service additionally requires the configuration of the appropriate
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driver in Neutron.
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When the 'Port Binding' extension is also enabled in Neutron, the
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publication of a 'dns_name' and 'dns_domain' combination to the external
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DNS as a service will require one additional update operation when Nova
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allocates the port during the instance boot. This may have a noticeable
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impact on the performance of the boot process.
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