[Bug 1784757] Re: rabbitmq-server does not properly shutdown

[Ivan Kurnosov]

I'm not sure why I did not mention originally, sorry for that, but there
is a chance that what makes it reproducible is starting the daemon
inside the lxd/lxc

For those who don't use lxd - the commands would be (I don't have access
to linuxes or my infrastructure at the moment, so might be a bit
incorrect):

lxc launch ubuntu:bionic
lxc exec <container name> bash

inside container:
apt update
apt install rabbitmq-server
systemct restart rabbitmq-server

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https://bugs.launchpad.net/bugs/1784757

Title:
  rabbitmq-server does not properly shutdown

Status in rabbitmq-server package in Ubuntu:
  Incomplete

Bug description:
  When I run `systemctl restart rabbitmq-server` it waits for 90 seconds
  then systemd sends SIGKILL to it.

  Presumably the `epmd` process does not receive SIGTERM, since if I run
  `kill 1493` (or whatever pid it currently is) then restart happens
  straight after that successfully

  ● rabbitmq-server.service - RabbitMQ Messaging Server
     Loaded: loaded (/lib/systemd/system/rabbitmq-server.service; enabled; vendor preset: enabled)
     Active: deactivating (final-sigterm) since Wed 2018-08-01 01:17:04 UTC; 7s ago
    Process: 1183 ExecStop=/usr/sbin/rabbitmqctl stop (code=exited, status=0/SUCCESS)
    Process: 178 ExecStartPost=/usr/lib/rabbitmq/bin/rabbitmq-server-wait (code=exited, status=0/SUCCESS)
    Process: 177 ExecStart=/usr/sbin/rabbitmq-server (code=killed, signal=TERM)
   Main PID: 177 (code=killed, signal=TERM)
      Tasks: 1 (limit: 4915)
     CGroup: /system.slice/rabbitmq-server.service
             └─1493 /usr/lib/erlang/erts-9.2/bin/epmd -daemon

  Aug 01 01:11:20 rmq-1 systemd[1]: rabbitmq-server.service: Failed to reset devices.list: Operation not permitted
  Aug 01 01:11:20 rmq-1 systemd[1]: Starting RabbitMQ Messaging Server...
  Aug 01 01:11:25 rmq-1 rabbitmq[178]: Waiting for 'rabbit at rmq-1'
  Aug 01 01:11:25 rmq-1 rabbitmq[178]: pid is 204
  Aug 01 01:11:30 rmq-1 systemd[1]: Started RabbitMQ Messaging Server.
  Aug 01 01:17:04 rmq-1 systemd[1]: Stopping RabbitMQ Messaging Server...
  Aug 01 01:17:06 rmq-1 rabbitmq[1183]: Stopping and halting node 'rabbit at rmq-1'

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