rabbitmq-server fails to start on a IPv6-Only environment/epmd is not IPv6 enabled

Guys,

Is that any workaround for this problem?

It is very annoying to manually edit the /etc/resolv.conf file just to be able to restart RabbirMQ... :-/

Tks in advance!

Thiago

Status changed to 'Confirmed' because the bug affects multiple users.

I think the issue is that the epmd by default will only listen on IPv4 addresses; this appears to be a compile time option in erlang.

Thiago

If you want to test I have a patched erlang in:

   ppa:james-page/rabbitmq

I think it forces the right behaviour in epmd:

tcp6 0 0 :::5672 :::* LISTEN
tcp6 0 0 :::4369 :::* LISTEN

This bug was fixed in the package erlang - 1:17.1-dfsg-4ubuntu2

---------------
erlang (1:17.1-dfsg-4ubuntu2) utopic; urgency=medium

  * Enable IPv6 support in epmd (LP: #1312507), supporting use in IPv6
    only environments.
    - d/rules: Use "-DEPMD6" in CPPFLAGS and ensure this is passed to
      relevant bits of the build process.
 -- James Page <email address hidden> Tue, 12 Aug 2014 14:51:44 +0100

Awesome James! I'll test it...

Listen, is it possible to backport this fix to Trusty ?

Thank you!

Best,
Thiago

Thiago

I've uploaded to the trusty-proposed queue for SRU team review.

Hello Thiago, or anyone else affected,

Accepted erlang into trusty-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/erlang/1:16.b.3-dfsg-1ubuntu2.1 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 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!

Hey guys! Awesome job!

Problem fixed, packages: "erlang-* 1:16.b.3-dfsg-1ubuntu2.1".

No more IPv4 at my OpenStack Controller Node, YAY! :-)

Have a nice weekend!

Thanks!

Verified, works for me, thanks.

The verification of the Stable Release Update for erlang has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

This bug was fixed in the package erlang - 1:16.b.3-dfsg-1ubuntu2.1

---------------
erlang (1:16.b.3-dfsg-1ubuntu2.1) trusty; urgency=medium

  * Enable IPv6 support in epmd (LP: #1312507), supporting use in IPv6
    only environments:
    - d/rules: Use "-DEPMD6" in CPPFLAGS and ensure this is passed to
      relevant bits of the build process.
 -- James Page <email address hidden> Tue, 12 Aug 2014 17:29:24 +0100

For some reason, one of controllers (small isolated region that I have for tests in lab), it still doesn't work... I'll investigate it more.

Version "1:16.b.3-dfsg-1ubuntu2.1":

---
root@controller-1:~# dpkg -l | grep erlang-base
ii erlang-base 1:16.b.3-dfsg-1ubuntu2.1 amd64 Erlang/OTP virtual machine and base applications

root@controller-1:~# service rabbitmq-server restart
 * Restarting message broker rabbitmq-server
   ...fail!
---

Then, I removed the IPv6 "nameservers" entries out from /etc/resolv.conf...:

---
root@controller-1:~# service rabbitmq-server restart
 * Restarting message broker rabbitmq-server
   ...done.
---

It seems that there are still something wrong with it...

I'll post it here if I can figure it out.

Best,
Thiago

After upgrading erlang to 1:16.b.3-dfsg-1ubuntu2.1, rabbitmq-server have been broken. Now it can't starts with epdm environment variable like "export ERL_EPMD_ADDRESS=10.0.0.1" in /etc/rabbitmq/rabbitmq-env.conf

I suspect that this fix also broke rabbitmq on one of my servers. For unimportant reasons this particular server had ipv6 disabled through the kernel command line ( GRUB_CMDLINE_LINUX="ipv6.disable=1" ). I ran strace on epmd and this is, I assume, the relevant section:

---
socket(PF_INET6, SOCK_STREAM, IPPROTO_IP) = -1 EAFNOSUPPORT (Address family not supported by protocol)
open("/etc/localtime", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=1892, ...}) = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=1892, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f9e056a0000
read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\4\0\0\0\4\0\0\0\0"..., 4096) = 1892
lseek(3, -1217, SEEK_CUR) = 675
read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\6\0\0\0\6\0\0\0\0"..., 4096) = 1217
close(3) = 0
munmap(0x7f9e056a0000, 4096) = 0
write(2, "epmd: Mon Sep 29 15:09:23 2014: "..., 103epmd: Mon Sep 29 15:09:23 2014: error opening stream socket: Address family not supported by protocol
) = 103
exit_group(1) = ?
+++ exited with 1 +++

Re-enabling ipv6 fixes the problem.

cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=14.04
DISTRIB_CODENAME=trusty
DISTRIB_DESCRIPTION="Ubuntu 14.04.2 LTS"

uname -a
Linux hexes-book 3.13.0-46-generic #77-Ubuntu SMP Mon Mar 2 18:23:39 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

sudo dpkg --configure -a
Настраивается пакет rabbitmq-server (3.2.4-1) …
 * Starting message broker rabbitmq-server * FAILED - check /var/log/rabbitmq/startup_\{log, _err\}
                                                                         [fail]
invoke-rc.d: initscript rabbitmq-server, action "start" failed.
dpkg: error processing package rabbitmq-server (--configure):
 подпроцесс установлен сценарий post-installation возвратил код ошибки 1
При обработке следующих пакетов произошли ошибки:
 rabbitmq-server

erl -sname foo
{error_logger,{{2015,3,3},{21,43,40}},"Protocol: ~tp: register/listen error: ~tp~n",["inet_tcp",econnrefused]}

cat /etc/hosts
127.0.0.1 hexes-book localhost

hostname
hexes-book

I am having the same issue. With ipv6 disabled, epmd will not start...

Sorry to ask but, why disable IPv6? That's odd, I'm disabling IPv4 these
days... ;-)

Let it enabled... For God's sake... It doesn't hurt... =P

On 14 April 2015 at 15:14, True-night <email address hidden> wrote:

> I am having the same issue. With ipv6 disabled, epmd will not start...
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1312507
>
> Title:
> rabbitmq-server fails to start on a IPv6-Only environment/epmd is not
> IPv6 enabled
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/erlang/+bug/1312507/+subscriptions
>

If your Router server fails and you can't able to connect to the internet. And also you are facing the IP address problem and DNS follow Dlink Support and visit https://www.routertechnicalsupportnumbers.com/d-link-router-support/ for help. I was also following that to solve the problems of router server fails and also DNS error.