[Bug 1625044] Re: unable to connect to secured install on trusty from xenial client

[Sorcerer10]

confirmed. 
Same thing for me.

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https://bugs.launchpad.net/bugs/1625044

Title:
  unable to connect to secured install on trusty from xenial client

Status in rabbitmq-server package in Ubuntu:
  Confirmed

Bug description:
  This was detected after we switch the hosts used to openstack charm
  amulet tests from trusty->xenial.

  The rabbitmq-server charms exercise messaging from the test client;
  this includes validating SSL functionality and configuration.  Prior
  to the switch, trusty clients (using pika) could quite happily
  validate SSL for all rabbitmq-server ubuntu targets (through to
  xenial/yakkety).

  With the switch to xenial, the connections get reset when SSL is
  enable early in the TLS setup lifecycle;  this is reproducable outside
  of pika using the openssl client directly:

    openssl s_client -connect 10.5.18.72:5671 -tls1 -state -debug

  I also (on the advice of the security team) ran the http://testssl.sh
  script against RabbitMQ - with Xenial or Yakkety hosts, it all looks
  OK, but against a Trusty host, the SSL/TLS connections never actually
  establish correctly.  Again from a trusty client, testssl.sh runs OK.

  I suspect that this is something todo with the erlang version in
  trusty (16.b3) vs xenial (>= 18):

    https://www.rabbitmq.com/which-erlang.html

  The RabbitMQ website indicates that 17.0 is requires to use TLS/SSL
  reliably (smells like a root cause to me).

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: rabbitmq-server 3.2.4-1
  ProcVersionSignature: Ubuntu 4.4.0-9136.55-generic 4.4.16
  Uname: Linux 4.4.0-9136-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.21
  Architecture: amd64
  Date: Mon Sep 19 08:12:27 2016
  PackageArchitecture: all
  SourcePackage: rabbitmq-server
  UpgradeStatus: No upgrade log present (probably fresh install)
  modified.conffile..etc.default.rabbitmq.server:
   # Generated by juju
   # bump ulimit so rabbit can support lots of connections
   ulimit -n 65536
  mtime.conffile..etc.default.rabbitmq.server: 2016-09-17T09:03:36.894989

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