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Bug 1298401

Summary:	Memcached fails to start in ipv6 environment
Product:	Red Hat OpenStack	Reporter:	Marius Cornea <mcornea>
Component:	memcached	Assignee:	hguemar
Status:	CLOSED ERRATA	QA Contact:	Marius Cornea <mcornea>
Severity:	high	Docs Contact:
Priority:	urgent
Version:	7.0 (Kilo)	CC:	apevec, emacchi, hguemar, jcoufal, jschluet, karlthered, lhh, mburns, rhel-osp-director-maint, yeylon
Target Milestone:	z4	Keywords:	Triaged, ZStream
Target Release:	7.0 (Kilo)
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	memcached-1.4.15-9.1.el7ost	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:
Clones:	1298603 1299075 (view as bug list)		Environment:
Last Closed:	2016-02-18 16:10:21 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:
Bug Depends On:
Bug Blocks:	1298603, 1299075

Description Marius Cornea 2016-01-14 00:15:46 UTC

Description of problem:
Memcached fails to start in ipv6 environment:
overcloud-controller-0 systemd[1]: Starting Cluster Controlled memcached...
overcloud-controller-0 memcached[9948]: Invalid port number: "fd00:fd00:2000:f816:3eff:feae:9393"failed to listen on TCP port 11211: Success
overcloud-controller-0 systemd[1]: memcached.service: main process exited, code=exited, status=71/n/a
overcloud-controller-0 systemd[1]: Unit memcached.service entered failed state.

Version-Release number of selected component (if applicable):
I'm doing the test following the instructions in:
https://etherpad.openstack.org/p/tripleo-ipv6-support
and enabling pacemaker by passing an additional $THT/environments/puppet-pacemaker.yaml environment file


How reproducible:
100%

Steps to Reproduce:
1. Apply workarounds for BZ#1295986 and BZ#1297850
2. Deploy ipv6 enabled overcloud

Actual results:
systemd[1]: Starting Cluster Controlled memcached...
memcached[9948]: Invalid port number: "fd00:fd00:2000:f816:3eff:feae:9393"failed to listen on TCP port 11211: Success


Expected results:
memcached gets started

Additional info:
[root@overcloud-controller-0 ~]# cat /etc/sysconfig/memcached 
PORT="11211"
USER="memcached"
MAXCONN="8192"
CACHESIZE="15087"
OPTIONS="-l fd00:fd00:fd00:2000:f816:3eff:feae:9393 -U 11211 -t 4 >> /var/log/memcached.log 2>&1"

Upstream fix:
https://github.com/memcached/memcached/pull/98

Comment 1 Emilien Macchi 2016-01-14 04:31:57 UTC

Assigned to OPM because I think it's a bug in puppet-memcached. We're looking at it.

Comment 2 Marius Cornea 2016-01-14 11:09:46 UTC

The issue has been reported here:
https://github.com/yeshm/memcached/issues/310

and it appears to have been solved in release 1.4.25:
https://github.com/memcached/memcached/wiki/ReleaseNotes1425

The version installed on my system is memcached-1.4.15-9.el7.x86_64

Comment 4 Marius Cornea 2016-01-19 10:42:19 UTC

memcached-1.4.15-9.1.el7ost.x86_64
[root@overcloud-controller-0 ~]# systemctl status memcached
● memcached.service - Cluster Controlled memcached
   Loaded: loaded (/usr/lib/systemd/system/memcached.service; disabled; vendor preset: disabled)
  Drop-In: /run/systemd/system/memcached.service.d
           └─50-pacemaker.conf
   Active: active (running) since Tue 2016-01-19 05:41:42 EST; 1s ago
 Main PID: 5907 (memcached)
   CGroup: /system.slice/memcached.service
           └─5907 /usr/bin/memcached -u memcached -p 11211 -m 15087 -c 8192 -l fd00:fd00:fd00:2000:f816:3eff:feeb:3100 -U 11211 -t 8 >> /var/log/memcached.log 2>&1

Jan 19 05:41:42 overcloud-controller-0.localdomain systemd[1]: Started Cluster Controlled memcached.
Jan 19 05:41:42 overcloud-controller-0.localdomain systemd[1]: Starting Cluster Controlled memcached...
Warning: memcached.service changed on disk. Run 'systemctl daemon-reload' to reload units.
[root@overcloud-controller-0 ~]# netstat -tupan | grep 11211
tcp6       0      0 fd00:fd00:fd00:20:11211 :::*                    LISTEN      5907/memcached      
udp6       0      0 fd00:fd00:fd00:20:11211 :::*                                5907/memcached

Comment 7 errata-xmlrpc 2016-02-18 16:10:21 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