Bug 1788575

Summary:	[RHOSP 16] hosts-config.sh reports Argument list too long (THT)
Product:	Red Hat OpenStack	Reporter:	Luke Short <lshort>
Component:	openstack-tripleo-heat-templates	Assignee:	Luke Short <lshort>
Status:	CLOSED ERRATA	QA Contact:	Sasha Smolyak <ssmolyak>
Severity:	high	Docs Contact:
Priority:	high
Version:	16.0 (Train)	CC:	jhajyahy, mburns
Target Milestone:	rc	Keywords:	Triaged
Target Release:	16.0 (Train on RHEL 8.1)
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	openstack-tripleo-heat-templates-11.3.1-1	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-02-06 14:44:12 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 Luke Short 2020-01-07 14:33:52 UTC

Description of problem:
The /etc/hosts file fails to be populated on a large scale out of Overcloud nodes.

Version-Release number of selected component (if applicable):
RHOSP 16 <= 2019-01-06

How reproducible:
100%

Steps to Reproduce:
1. Deploy an Overcloud with 400+ nodes
2. The deploy will fail to create the /etc/hosts file on the Overcloud nodes.

Actual results:
A large list of host entries is passed as an environment variable to Bash. This leads to an "Argument list too long" error.

Expected results:
This should be handled by Ansible to prevent this issue. The hosts file should also ideally only be rendered once.

Additional info:
Upstream bug = https://bugs.launchpad.net/tripleo/+bug/1856076

Comment 4 Jad Haj Yahya 2020-01-20 14:26:25 UTC

Verified on RHOS_TRUNK-16.0-RHEL-8-20200113.n.0 according to steps above

Comment 6 errata-xmlrpc 2020-02-06 14:44:12 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/RHEA-2020:0283