Bug 1463138

Summary: [free][free-int]Error message happens "system:serviceaccount:kube-system:horizontal-pod-autoscaler" cannot get deploymentconfigs/scale.extensions"
Product: OpenShift Online Reporter: xipang
Component: PodAssignee: Solly Ross <sross>
Status: CLOSED DUPLICATE QA Contact: DeShuai Ma <dma>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 3.xCC: aos-bugs, jliggitt, jokerman, mmccomas, sjenning
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Last Closed: 2017-06-23 03:23:11 UTC Type: Bug
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Description xipang 2017-06-20 08:39:30 UTC 
Description of problem:
The number of pods did not increase with autoscaler handling.

Version-Release number of selected component (if applicable):
openshift v3.6.116
kubernetes v1.6.1+5115d708d7

How reproducible:
Always

Steps to Reproduce:
1. Create a project and DC, expose svc
$ oc create -f https://raw.githubusercontent.com/mdshuai/testfile-openshift/master/hpa/dc-hello-hpa.yaml
$ oc expose rc hello-hpa-1 --port=8080
2.Go to DC page -> hello-hpa -> Add autoscaler
Set Min Pods: 2
Set Max Pods: 10
Set CPU Request Target: 1%
Click "Save"

Actual results:
$oc describe hpa $HPA_NAME
 ... ...
Events:
  FirstSeen	LastSeen	Count	From				SubObjectPath	Type		Reason		Message
  ---------	--------	-----	----				-------------	--------	------		-------
  44m		25s		88	horizontal-pod-autoscaler		Warning		FailedGetScale	User "system:serviceaccount:kube-system:horizontal-pod-autoscaler" cannot get deploymentconfigs/scale.extensions in project "<project-name>"


Expected results:
3. After some time, pod on number are increased, the max pod number is 10

Additional info:
the while loop did not increse pods
Whether due to the above event
Comment 1 Xingxing Xia 2017-06-20 09:57:41 UTC 
FYI, to make clarity, the error "system:serviceaccount:kube-system:horizontal-pod-autoscaler" can be seen in `oc describe hpa $HPA_NAME` after the HPA is just created (no matter through CLI or web console). i.e. the error message is unrelated to increasing traffic to the app because the message is seen before user increases traffic to autoscale pod number
Comment 2 Jordan Liggitt 2017-06-21 04:36:14 UTC 
Same root issue as https://bugzilla.redhat.com/show_bug.cgi?id=1458663#c1

The HPA controller is not being started with a client that knows how to look for origin resources, so it is looking for them in the extensions API group

https://github.com/openshift/origin/pull/14678 will resolve this
Comment 3 Seth Jennings 2017-06-23 03:23:11 UTC 

*** This bug has been marked as a duplicate of bug 1458663 ***