Bug 1700252

Summary:	[OSP14]Default ulimit for nova-compute container is too low when ceph is used
Product:	Red Hat OpenStack	Reporter:	Martin Schuppert <mschuppe>
Component:	openstack-tripleo-heat-templates	Assignee:	Martin Schuppert <mschuppe>
Status:	CLOSED ERRATA	QA Contact:	Joe H. Rahme <jhakimra>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	13.0 (Queens)	CC:	astupnik, dh3, johfulto, mburns, mschuppe, yrabl
Target Milestone:	z3	Keywords:	Triaged, ZStream
Target Release:	14.0 (Rocky)
Hardware:	All
OS:	All
Whiteboard:
Fixed In Version:	openstack-tripleo-heat-templates-9.3.1-0.20190314162757.d0a6cb1.el7ost	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1693667	Environment:
Last Closed:	2019-07-02 20:08:28 UTC	Type:	---
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:	1693667
Bug Blocks:

Description Martin Schuppert 2019-04-16 07:49:03 UTC

+++ This bug was initially created as a clone of Bug #1693667 +++

Description of problem:

Patch [1] was used to enforce new default ulimit for nova-compute container, it was set to 1024. Though it is possible to adjust this limit, it is still suboptimal for certain use cases: for example, when ceph is configured for ephemeral storage and every instance has a huge number of disks.

In such case default limit is wrong and we have to either adjust it manually using the doc, or change default value. I suggest to increase default value to 1048576 (was configured in RHOSP 12).

Symptom:

237794 <... socket resumed> )     = -1 EMFILE (Too many open files)


[1] https://review.openstack.org/#/c/560991/

Comment 7 errata-xmlrpc 2019-07-02 20:08:28 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/RHBA-2019:1672