Bug 1462681 - Containerized install: repeated "Could not get instant cpu stats". Heapster not running.
Containerized install: repeated "Could not get instant cpu stats". Heapster...
Product: OpenShift Container Platform
Classification: Red Hat
Component: Pod (Show other bugs)
Unspecified Unspecified
unspecified Severity medium
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Assigned To: Derek Carr
DeShuai Ma
Depends On:
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Reported: 2017-06-19 05:20 EDT by Mike Fiedler
Modified: 2017-06-19 06:08 EDT (History)
3 users (show)

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Last Closed: 2017-06-19 06:08:24 EDT
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Description Mike Fiedler 2017-06-19 05:20:38 EDT
Description of problem:

OCP 3.6.116 installed containerized on AWS.  Node logs show repeated instances of 

Could not get instant cpu stats: different number of cpus
Could not get instant cpu stats: cumulative stats decrease

I saw https://bugzilla.redhat.com/show_bug.cgi?id=1437325 but the commentary there was that it was not a problem if not repeated.  In this case it is definitely repeated.   Heapster is not running

I am not seeing --system-reserved for CPU working in this environment.   I will file that as a separate bz but wanted to log this in case it was relevant.

Version-Release number of selected component (if applicable): 3.6.116

How reproducible: Always

Steps to Reproduce:
1. Install OCP 3.6 containerized on AWS EC2 (1 master/etcd, 1 infra, 2 nodes)
2. journalctl -fu atomic-openshift-node and watch for the messages in the description above

Actual results:

Warning messages about unable to retrieve cpu stats.  Also --system-reserved for CPU is having no effect, but will log that as a separate issue.
Comment 1 Mike Fiedler 2017-06-19 06:08:24 EDT
While trying to gather logs for this issue I noticed that atomic-openshift-master was running as an unconfigured process.  Once I yum removed that package and made sure systemd units were clean, I no longer see the issue.   Closing this bug.

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