Public bug reported:
When installing with Subiquity, on the Live ISOs for Server, once the
system is installed, cloud-init in /etc/cloud/cloud.cfg has
preserve_hostname set to "False".
In essence, if you are trying to change the hostname post-install on
such an installation, the changed hostname will *not* persist.
Therefore, if I installed with the hostname 'ubuntu' and want to change
it to 'teward-server', the typical process is to edit /etc/hosts,
/etc/hostname, and run hostnamectl to change the hostname references for
the system.
Currently, however, we have to set preserve_hostname to 'True' for
/etc/cloud/cloud.cfg in order for the hostname change to persist.
It should probably be done by Subiquity that after you install it you
set persist_hostname to "True" in order for hostname changes post-
install to still be kept and applied.
** Affects: subiquity (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1809155
Title:
subiquity in 18.04.1 via cloud-init doesn't set hostname persistence
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