[Bug 1808766] Re: fails to start

[Christian Ehrhardt ]

After validating the different options (sorry for my interim confusion) I think for now the least-invasive solution is the second suggested change. The other options are not as-good IMHO:
- the first adds a lot of Delta to many packages
- the third would make a package require user interaction to work after install

Changes:
1. remove BindToDevice=lo in /lib/systemd/system/epmd.socket of erlang
2. change epmd at 0.0.0.0.socket epmd.socket in /lib/systemd/system/rabbitmq-server.service to ensure proper ordering

I checked that in a container and it works for me as well.

That also means that any other "broken by recent erlang" would be fixed for now.
Mid term we can most likely follow Debian on resolving this.

Since initially this was found as s390x issue I retried there as well.
It is still crashing the same way on s390x, so we might have two independent issues here.

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https://bugs.launchpad.net/bugs/1808766

Title:
  fails to start

Status in erlang package in Ubuntu:
  New
Status in rabbitmq-server package in Ubuntu:
  Confirmed

Bug description:
  The manila test results are not at all happy on s390x:

  http://autopkgtest.ubuntu.com/packages/m/manila/disco/s390x

  This turns out to be because rabbitmq-server is failing to start:

  Job for rabbitmq-server.service failed because the control process exited with error code.
  See "systemctl status rabbitmq-server.service" and "journalctl -xe" for details.
  invoke-rc.d: initscript rabbitmq-server, action "start" failed.
  ● rabbitmq-server.service - RabbitMQ Messaging Server
     Loaded: loaded (]8;;file://autopkgtest/lib/systemd/system/rabbitmq-server.service/lib/systemd/system/rabbitmq-server.service]8;;; enabled; vendor preset: enabled)
     Active: activating (auto-restart) (Result: exit-code) since Sun 2018-12-16 23:04:30 UTC; 18ms ago
    Process: 6376 ExecStart=/usr/sbin/rabbitmq-server (code=exited, status=1/FAILURE)
   Main PID: 6376 (code=exited, status=1/FAILURE)

  Dec 16 23:04:30 autopkgtest systemd[1]: rabbitmq-server.service: Main process exited, code=exited, status=1/FAILURE
  Dec 16 23:04:30 autopkgtest systemd[1]: rabbitmq-server.service: Failed with result 'exit-code'.
  Dec 16 23:04:30 autopkgtest systemd[1]: Failed to start RabbitMQ Messaging Server.
  dpkg: error processing package rabbitmq-server (--configure):
   installed rabbitmq-server package post-installation script subprocess returned error exit status 1

  I got cpaelzer to try on a non-autopkgtest machine with the same
  result.

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