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Bug 1299253

Summary: epmd doesn't support IPv6
Product: Red Hat OpenStack Reporter: John Eckersberg <jeckersb>
Component: erlangAssignee: John Eckersberg <jeckersb>
Status: CLOSED ERRATA QA Contact: Asaf Hirshberg <ahirshbe>
Severity: urgent Docs Contact:
Priority: urgent    
Version: 7.0 (Kilo)CC: apevec, ddomingo, jeckersb, lhh, mburns, yeylon
Target Milestone: z4Keywords: ZStream
Target Release: 7.0 (Kilo)   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: erlang-R16B-03.10min.5.el7ost Doc Type: Bug Fix
Doc Text:
The Erlang port mapper daemon (epmd) can now listen on IPv6 addresses. In addition, clients can now register and query epmd over IPv6. This, in turn, now allows Erlang clustering to work in an IPv6-only environment. Previously, epmd could only bind and listen on IPv4 addresses, thereby preventing the formation of Erlang clusters in IPv6-only environments.c
 Story Points: ---
Clone Of: Environment:
Last Closed: 2016-02-18 16:10:44 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description John Eckersberg 2016-01-17 21:08:15 UTC 
Description of problem:


Version-Release number of selected component (if applicable):
erlang-erts-R16B-03.10min.4.el7ost.x86_64

How reproducible:
Always

Steps to Reproduce:
[root@rhel7 ~]# epmd -daemon
[root@rhel7 ~]# ss -antp | grep epmd
LISTEN     0      128                       *:4369                     *:*      users:(("epmd",2376,3))
[root@rhel7 ~]# epmd -kill
Killed
[root@rhel7 ~]# epmd -address ::1
epmd: Sun Jan 17 15:54:26 2016: cannot parse IP address "::1"


Actual results:
Does not bind to IPv6 by default or if explicitly 

Expected results:
Should bind to both ipv4/6 by default, and able to parse and use ipv6 address for '-address' option

Additional info:
https://github.com/erlang/otp/pull/864
Comment 2 Asaf Hirshberg 2016-02-01 09:08:08 UTC 
Verified on 2016-01-21-1.

[root@overcloud-controller-0 ~]# ss -antp | grep epmd
LISTEN     0      128          *:4369                     *:*                   users:(("epmd",pid=7868,fd=3))
ESTAB      0      0      127.0.0.1:4369               127.0.0.1:41244               users:(("epmd",pid=7868,fd=5))
LISTEN     0      128         :::4369                    :::*                   users:(("epmd",pid=7868,fd=4))
Comment 5 errata-xmlrpc 2016-02-18 16:10:44 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-0259.html