Bug 1788140

Summary: kube-apiserver-operator metrics cannot be scraped in IPv6 cluster
Product: OpenShift Container Platform Reporter: Pawel Krupa <pkrupa>
Component: kube-apiserverAssignee: Michal Fojtik <mfojtik>
Status: CLOSED ERRATA QA Contact: Ke Wang <kewang>
Severity: high Docs Contact:
Priority: unspecified    
Version: 4.3.zCC: aos-bugs, mfojtik, nagrawal, xxia
Target Milestone: ---   
Target Release: 4.4.0   
Hardware: Unspecified   
OS: Unspecified   
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Clone Of:
: 1788188 1790430 (view as bug list) Environment:
Last Closed: 2020-05-04 11:22:33 UTC Type: Bug
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On:    
Bug Blocks: 1788188    
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Description Flags
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Description Pawel Krupa 2020-01-06 14:28:02 UTC 
Created attachment 1650123 [details]
must gather

Description of problem:
In IPv6 cluster metrics from kube-apiserver-operator cannot be scraped due to connection refused error

Version-Release number of selected component (if applicable):
4.3.0-0.nightly-2019-12-18-145749-ipv6.1

How reproducible:
Always

Steps to Reproduce:
1. Start a cluster
2. Go to prometheus UI -> targets (this needs to be done with port-forward, due to https://bugzilla.redhat.com/show_bug.cgi?id=1788135, cmd: "-n openshift-monitoring port-forward svc/prometheus-operated 9090")

Actual results:
`openshift-apiserver-operator/openshift-apiserver-operator/0` is DOWN


Expected results:
`openshift-apiserver-operator/openshift-apiserver-operator/0` is UP


Additional info:
Comment 1 Pawel Krupa 2020-01-06 14:34:49 UTC 
It should be `openshift-kube-apiserver-operator/kube-apiserver-operator/0` instead of `openshift-apiserver-operator/openshift-apiserver-operator/0`.
Comment 5 Ke Wang 2020-03-24 10:04:51 UTC 
Verified with OCP build ipv6 4.4.0-0.nightly-2020-03-23-010639, metrics  service of kube-apiserver  is up.
Go to prometheus UI -> menu(Status) -> Drop-down list(Targets), search keyword with “openshift-kube-apiserver-operator” in page,

openshift-kube-apiserver-operator/kube-apiserver-operator/0 (1/1 up):   
https://[fd01::1:68f4:caff:fe00:24]:8443/metrics   up  endpoint="https"   instance="[fd01::1:68f4:caff:fe00:24]:8443"  job="metrics"   namespace="openshift-kube-apiserver-operator"  pod="kube-apiserver-operator-6ffffbdb75-nj6dv"  service="metrics"
Comment 7 errata-xmlrpc 2020-05-04 11:22:33 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-2020:0581