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Set Hostname
------------
**Summary:** set hostname and fqdn
This module handles setting the system hostname and fqdn. If
``preserve_hostname`` is set, then the hostname will not be altered.
A hostname and fqdn can be provided by specifying a full domain name under the
``fqdn`` key. Alternatively, a hostname can be specified using the ``hostname``
key, and the fqdn of the cloud wil be used. If a fqdn specified with the
``hostname`` key, it will be handled properly, although it is better to use
the ``fqdn`` config key. If both ``fqdn`` and ``hostname`` are set, ``fqdn``
will be used.
**Internal name:** ``cc_set_hostname``
**Module frequency:** per instance
**Supported distros:** all
**Config keys**::
preserve_hostname: <true/false>
fqdn: <fqdn>
hostname: <fqdn/hostname>
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write_json( t utilt SetHostnameErrorc B s e Z d Z RS( sÛ Raised when the distro runs into an exception when setting hostname.
This may happen if we attempt to set the hostname early in cloud-init's
init-local timeframe as certain services may not be running yet.
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