Bug 1395740

Summary:	Overcloud stack with a large number of nodes fails with: Resource CREATE failed: Collection length exceeds 200 elements
Product:	Red Hat OpenStack	Reporter:	Marius Cornea <mcornea>
Component:	instack-undercloud	Assignee:	Steven Hardy <shardy>
Status:	CLOSED ERRATA	QA Contact:	Marius Cornea <mcornea>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	10.0 (Newton)	CC:	dbecker, jschluet, jslagle, mburns, morazi, rhel-osp-director-maint, shardy
Target Milestone:	ga	Keywords:	Triaged
Target Release:	10.0 (Newton)
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	instack-undercloud-5.1.0-3.el7ost	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-12-14 16:33:02 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 Marius Cornea 2016-11-16 14:55:46 UTC

Description of problem:
I'm doing a deployment with 3 controllers and 40 compute nodes and the overcloud stack creation fails with:

Resource CREATE failed: Collection length exceeds 200 elements

Version-Release number of selected component (if applicable):
instack-undercloud-5.0.0-4.el7ost.noarch

It looks that we need to increase the [yaql] limit_iterators in /etc/heat/heat.conf as with the current version the default value gets set.

Comment 1 Steven Hardy 2016-11-16 15:02:26 UTC

The problem is we're missing a fix that increases the yaql limit_iterators in the heat.conf on the undercloud (from the default of 200, which is too small for the large stacks we're creating with TripleO in this case).

Upstream bug raised, and backport proposed:

https://bugs.launchpad.net/tripleo/+bug/1642287

https://review.openstack.org/#/c/398396/

Comment 2 Marius Cornea 2016-11-16 15:08:46 UTC

Workaround:

1. Create hieradata file:

cat /home/stack/custom_hiera.yaml 
heat::yaql_limit_iterators: 1000

2. Edit undercloud.conf and point it to the hieradata file
hieradata_override =  /home/stack/custom_hiera.yaml

3. Rerun openstack undercloud install

Comment 3 Steven Hardy 2016-11-25 11:22:06 UTC

https://review.openstack.org/#/c/398396/ landed, verfied by inspection it's included in instack-undercloud-5.1.0-3.el7ost.noarch.rpm

Comment 6 errata-xmlrpc 2016-12-14 16:33:02 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/RHEA-2016-2948.html