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Bug 1630024

Summary: DNSmasq killed
Product: OpenShift Container Platform Reporter: jooho lee <jlee>
Component: NetworkingAssignee: Dan Mace <dmace>
Networking sub component: router QA Contact: zhaozhanqi <zzhao>
Status: CLOSED CURRENTRELEASE Docs Contact:
Severity: medium    
Priority: unspecified CC: aos-bugs, bbennett, jokerman, mmccomas
Version: 3.7.0   
Target Milestone: ---   
Target Release: 3.11.z   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-10-11 00:10:42 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:
Attachments:
Description Flags
too many open files
none
Kubernetes logs none

Description jooho lee 2018-09-17 19:55:38 UTC
Description of problem:

OpenShift node have strange logs messages and DNSMasq wad killed. I am not sure which process kill the dnsmasq.

I attached error logs.

1 thing that I noticed is the node cannot apply tuned profile "openshift-node"

``
[root@ocpnpea07 npeocpadmin]# tuned-adm profile openshift-node
Cannot load profile 'openshift-node': Cannot find profile '${f:virt_check:virtual-guest:throughput-performance}' in '['/etc/tuned', '/usr/lib/tuned']'.`

```

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


How reproducible:
can not reproduce manually.

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results:


Additional info:

Comment 1 jooho lee 2018-09-17 19:58:22 UTC
Created attachment 1484136 [details]
too many open files

Comment 2 jooho lee 2018-09-17 19:59:26 UTC
Created attachment 1484137 [details]
Kubernetes logs

Comment 3 Meng Bo 2018-09-18 09:54:37 UTC
Can you check if there are too many opened connections for the dnsmasq process?

# lsof -p `pgrep dnsmasq`        # you may need to install the lsof command firstly
or
# netstat -lnptu | grep dnsmasq