[Bug 1644153] Re: SSL handshake fails on xenial, yakkety, zesty

[Steve Langasek]

Hello Chris, or anyone else affected,

Accepted python-jujuclient into xenial-proposed. The package will build
now and be available at https://launchpad.net/ubuntu/+source/python-
jujuclient/0.50.5-0ubuntu2~16.04 in a few hours, and then in the
-proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested, and change the tag
from verification-needed to verification-done. If it does not fix the
bug for you, please add a comment stating that, and change the tag to
verification-failed.  In either case, details of your testing will help
us make a better decision.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance!

** Tags added: verification-needed

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https://bugs.launchpad.net/bugs/1644153

Title:
  SSL handshake fails on xenial, yakkety, zesty

Status in python-jujuclient:
  New
Status in python-jujuclient package in Ubuntu:
  Fix Released
Status in python-jujuclient source package in Xenial:
  Fix Committed
Status in python-jujuclient source package in Yakkety:
  Fix Committed
Status in python-jujuclient source package in Zesty:
  Fix Released

Bug description:
  [Impact]

   * The python Juju client cannot make SSL connections to the server anymore, because TLS v1.0 was deprecated on the server.
   * Switching to TLS v1.2 fixes the problem entirely.
   * Example failure: http://pastebin.ubuntu.com/23521446/

  [Test case]

  Steps to reproduce (works in a container, needs a valid juju
  environment):

   * Install juju 1.25: sudo apt-get install juju-1-default juju-1.25
   * Install the package: sudo apt-get install python-jujuclient
   * Set up an environment (ec2 works for instance)
   * Bootstrap environment: "juju bootstrap # Note your environment's name"
   * Run: python -c 'from jujuclient import Environment; Environment.connect("<your environment's name>")'

  [Regression Potential]

   * None - the package is completely unusable in its current state
  because of server changes. It can't get any worse :)

  [Other Info]

   * The attached patch is the minimal fix - forcing Python to connect over TLS 1.2 instead of forcing TLS 1.0.
   * TLS 1.2 connectivity is available in all targeted releases.
   * lp:python-jujuclient (upstream) is not affected by the problem, but the code is much diverged from the version in the archives, with way too many changes for a SRU.

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