[Bug 1853912] Re: /etc/pollinate/add-user-agent should be populated (in the server live env) to allow better identification of live clients

[Michael Hudson-Doyle]

In general I would prefer to do more things in livecd-rootfs and fewer
in casper, but if you need the device serial then yeah, I guess we need
to do this in casper.

** Changed in: casper (Ubuntu)
       Status: New => Triaged

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Title:
  /etc/pollinate/add-user-agent should be populated (in the server live
  env) to allow better identification of live clients

Status in casper package in Ubuntu:
  Triaged

Bug description:
  Pollinate provides various bits of information in the user agent to
  allow gathering of statistics about Ubuntu clients.  Unfortunately,
  the 'subiquity' tag is only added (via curtin->cloud-init) to the user
  agent tag in the *target* system; the live environment, which also
  runs pollinate for entropy gathering, does not have any such tag.
  This makes it impossible to distinguish booted live server images from
  other "generic" clients in the data.

  It would be valuable to have a tag identifying the live server image
  for statistical and debugging purposes.

  I would suggest using 'live/<serial>' as a tag, where <serial> is the
  image build serial from /mnt/.disk/info.

  This probably needs to be done by casper reading the file and
  synthesizing the content on the live overlay.

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