[Bug 1868215] Re: SRU: [lxd] Drop db collection and introduce lxd.buginfo

[Eric Desrochers]

Pushed into focal along with LP: #1865212.

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Title:
  SRU: [lxd] Drop db collection and introduce lxd.buginfo

Status in sosreport package in Ubuntu:
  In Progress
Status in sosreport source package in Bionic:
  In Progress
Status in sosreport source package in Eoan:
  In Progress
Status in sosreport source package in Focal:
  In Progress

Bug description:
  [Impact]

  sosreport doesn't have to collect everything related to lxd which is very huge and unhelpful that much.
  This commit make sosreport collect proper info as installation types.

  [Test Case]

  Scenario #1
  * Deploy a machine (Xenial) with lxd installed as a DEB package
  * Install sosreport
  * sudo sosreport -o lxd or/and sudo sosreport -a
  * Extract the archive in /tmp and go in path_to_sosreport/sos_commands/lxd
  The data collection should be the one in the else statement of the plugin.

  Scenario #2
  * Deploy a machine (Bionic and late) with lxd installed as a SNAP.
  * Install sosreport
  * sudo sosreport -o lxd or/and sudo sosreport -a
  * Extract the archive in /tmp and go in path_to_sosreport/sos_commands/lxd
  The data collection should be the one in the if statement of the plugin, only executing "lxd.buginfo" command only available in SNAP.

  Scenario #3:
  A quick script to run on a node to verify multiple different options (as a sanity check):

  https://raw.githubusercontent.com/sosreport/sos/master/tests/simple.sh

  sudo bash simple.sh /usr/bin/python3 /usr/bin/sosreport

  simple.sh is a quick port of the travis tests to bash, requires root.

  There is some work to incorporate this exact script into the sosreport
  package for autopkg testing, but meanwhile it can be run manually for
  verifications.

  [Regression]

  "lxd.buginfo" has the advantage of not needing updates whenever
  lxd upstream add a new feature or find something new that’s worth capturing since LXD is now only offered as a SNAP nowadays.

  The plugin will remain backward compatible with DEB and SNAP, until
  there is no supported lxd DEB package available.

  If a problem occurs it will only impact the lxd plugin, not the other
  plugins nor core functionnalities.

  If for some reasons a command can be executed (not found in versions
  installed or else). sosreport is fault tolerant, and will
  continue/skip the command that doesn't exist, fails, ...

  FWIW, the commit has been +1 by lxd upstream himself stgraber:
  https://github.com/sosreport/sos/pull/1982/

  [Others]

  upstream patch
  - https://github.com/sosreport/sos/pull/1982/commits/bdc5ffdf5b8376ab2014ec8fbd9a878cc9d0d264

  LXD upstream reference:
  https://discuss.linuxcontainers.org/t/what-lxd-information-should-be-collected-by-sosreport

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