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Bug 2046185

Summary: From time to time memcached stops processing requests and brings down OpenStack control plane
Product: Red Hat OpenStack Reporter: Damien Ciabrini <dciabrin>
Component: openstack-tripleo-heat-templatesAssignee: OSP Team <rhos-maint>
Status: CLOSED ERRATA QA Contact: Joe H. Rahme <jhakimra>
Severity: medium Docs Contact:
Priority: high    
Version: 16.2 (Train)CC: apevec, astupnik, bdobreli, camorris, dciabrin, dhill, dhruv, enothen, ggrimaux, hberaud, jhakimra, jmarcian, jmelvin, jschluet, lhh, lmiccini, mbayer, mburns, mgarciac, michal.vasko, michele, nchandek, satmakur, schhabdi, tkajinam, xili, ykulkarn, yusuf, yusufhadiwinata
Target Milestone: z2Keywords: Triaged
Target Release: 16.2 (Train on RHEL 8.4)   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: openstack-tripleo-heat-templates-11.6.1-2.20220116004909.64b2e88.el8ost Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: 1893205 Environment:
Last Closed: 2022-03-23 22:30:16 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: 1893205, 2100879, 2101864, 2101865    
Bug Blocks:    

Comment 10 Julia Marciano 2022-02-25 11:16:15 UTC 
Verified:

[stack@undercloud-0 ~]$ cat core_puddle_version 
RHOS-16.2-RHEL-8-20220210.n.1

[stack@undercloud-0 ~]$ rpm -qa|grep tripleo-heat
openstack-tripleo-heat-templates-11.6.1-2.20220116004909.64b2e88.el8ost.noarch

# Verifying that "memcache_use_advanced_pool" is enabled for corresponding overcloud services:
[root@controller-0 ~]# grep -irn memcache_use_advanced_pool=True /var/lib/config-data/puppet-generated/
/var/lib/config-data/puppet-generated/heat_api/etc/heat/heat.conf:2152:memcache_use_advanced_pool=True
/var/lib/config-data/puppet-generated/heat_api_cfn/etc/heat/heat.conf:2152:memcache_use_advanced_pool=True
/var/lib/config-data/puppet-generated/glance_api/etc/glance/glance-api.conf:5001:memcache_use_advanced_pool=True
/var/lib/config-data/puppet-generated/heat/etc/heat/heat.conf:2158:memcache_use_advanced_pool=True
/var/lib/config-data/puppet-generated/cinder/etc/cinder/cinder.conf:4323:memcache_use_advanced_pool=True
/var/lib/config-data/puppet-generated/neutron/etc/neutron/neutron.conf:509:memcache_use_advanced_pool=True
/var/lib/config-data/puppet-generated/nova_metadata/etc/nova/nova.conf:3405:memcache_use_advanced_pool=True
/var/lib/config-data/puppet-generated/nova/etc/nova/nova.conf:3417:memcache_use_advanced_pool=True
/var/lib/config-data/puppet-generated/placement/etc/placement/placement.conf:366:memcache_use_advanced_pool=True
Comment 15 errata-xmlrpc 2022-03-23 22:30:16 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 (Moderate: Red Hat OpenStack Platform 16.2 (openstack-tripleo-heat-templates) security update), 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-2022:0995
Comment 16 Luca Miccini 2022-06-08 07:18:55 UTC 
*** Bug 2034931 has been marked as a duplicate of this bug. ***