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

[Chris Glass]

I re-ran the outlined test-sequence without adding the juju-stable PPA
(like I originally did) to make sure this bug is not a side-effect of
the PPA.

It is not. It is reproducible on vanilla distro as outlined in the
description.

** Description changed:

  [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, ideally from the juju stable ppa: sudo add-apt-repository ppa:juju/stable; sudo apt-get update; sudo apt-get install juju-1-default
+  * 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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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:
  Confirmed
Status in python-jujuclient source package in Xenial:
  New
Status in python-jujuclient source package in Yakkety:
  New
Status in python-jujuclient source package in Zesty:
  Confirmed

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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