Bug 1445194

Summary:	[3.4] Installer fails to add/check iptables rule due to lock on xtables
Product:	OpenShift Container Platform	Reporter:	Paul Dwyer <pdwyer>
Component:	Installer	Assignee:	Scott Dodson <sdodson>
Status:	CLOSED ERRATA	QA Contact:	Wenkai Shi <weshi>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	3.4.0	CC:	jokerman, mmccomas, sreber
Target Milestone:	---
Target Release:	3.4.z
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Previously the installer may have failed to add iptables rules if other iptables rules were being updated at the same time. Now the installer waits to obtain a lock when updating iptables rules ensuring that rules are properly created.	Story Points:	---
Clone Of:
Clones:	1445282 (view as bug list)		Environment:
Last Closed:	2017-05-17 17:40:23 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:	1415800
Bug Blocks:	1445282

Description Paul Dwyer 2017-04-25 08:46:09 UTC

Description of problem:
Backport fix for bz1415800 to Openshift Container Platform 3.4

Version-Release number of selected component (if applicable):
OSCP3.4

Requesting backport of the change to 3.4 in the installer so the installer waits to obtain a lock when updating iptables rules ensuring that rules are properly created

I have not found any existing bugzilla to get this change backported into 3.4

Comment 2 Scott Dodson 2017-04-25 12:25:59 UTC

https://github.com/openshift/openshift-ansible/pull/3996

Comment 4 Wenkai Shi 2017-05-02 03:32:16 UTC

Verified with version openshift-ansible-3.4.80-1.git.0.4eee9b7.el7.noarch. During installation, run a while loop of iptables command on hosts, installer will be slow down at "TASK [os_firewall : Add iptables allow rules]" step, once stop the while loop, installer continue with normal speed.

[root@master ~]# while true; do iptables -nL; done
...

[root@ansible ~]# ansible-playbook -i hosts -v /usr/share/ansible/openshift-ansible/playbooks/byo/config.yml
...
TASK [os_firewall : Add iptables allow rules] **********************************
...
(slow down here during the "while loop" alive)
...

Comment 6 errata-xmlrpc 2017-05-17 17:40:23 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://access.redhat.com/errata/RHSA-2017:1244