[Bug 1727355] Re: Juju attempts to bootstrap bionic by default

[Andreas Hasenack]

On a xenial server, with distro-info-data 0.28ubuntu0.6 from current xenial-updates, juju-core is removed:
     0.28ubuntu0.6 500
        500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages

root at atlas:~# apt install distro-info-data
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  juju-core
The following packages will be upgraded:
  distro-info-data
1 upgraded, 0 newly installed, 1 to remove and 129 not upgraded.


Enabling xenial-proposed and retrying, it installs just fine and juju-core is kept:
     0.28ubuntu0.7 500
        500 http://archive.ubuntu.com/ubuntu xenial-proposed/main amd64 Packages

root at atlas:~# apt install distro-info-data
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be upgraded:
  distro-info-data
1 upgraded, 0 newly installed, 0 to remove and 171 not upgraded.
Need to get 0 B/4,334 B of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 154932 files and directories currently installed.)
Preparing to unpack .../distro-info-data_0.28ubuntu0.7_all.deb ...
Unpacking distro-info-data (0.28ubuntu0.7) over (0.28ubuntu0.5) ...
Setting up distro-info-data (0.28ubuntu0.7) ...

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https://bugs.launchpad.net/bugs/1727355

Title:
  Juju attempts to bootstrap bionic by default

Status in juju:
  Fix Released
Status in distro-info-data package in Ubuntu:
  Won't Fix
Status in juju-core package in Ubuntu:
  Invalid
Status in distro-info-data source package in Trusty:
  Won't Fix
Status in juju-core source package in Trusty:
  Invalid
Status in distro-info-data source package in Xenial:
  Fix Committed
Status in juju-core source package in Xenial:
  Fix Released
Status in distro-info-data source package in Zesty:
  Fix Released
Status in juju-core source package in Zesty:
  Fix Released
Status in distro-info-data source package in Artful:
  Won't Fix
Status in juju-core source package in Artful:
  Invalid

Bug description:
  This is with 2.2.5 on xenial, with x86 hosts:

  I'm hitting this everytime I try to bootstrap:

  14:01:42 DEBUG juju.cmd.juju.commands bootstrap.go:497 (error details:
  [{github.com/juju/juju/cmd/juju/commands/bootstrap.go:588: failed to
  bootstrap model} {github.com/juju/juju/tools/list.go:19: no matching
  agent binaries available}])

  Full error:
  http://paste.ubuntu.com/25817026/

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