Bug 1261459 - Regression: kubectl logs --follow is now broken
Summary: Regression: kubectl logs --follow is now broken
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: kubernetes
Version: 22
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Jan Chaloupka
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-09-09 11:39 UTC by Stef Walter
Modified: 2016-04-20 15:17 UTC (History)
9 users (show)

Fixed In Version: kubernetes-1.1.0-0.17.git388061f.fc22
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-04-20 15:17:42 UTC
Type: Bug
Embargoed:


Attachments (Terms of Use)
Test case (1.46 KB, text/plain)
2015-09-09 11:41 UTC, Stef Walter
no flags Details
Test case (969 bytes, text/plain)
2015-09-10 15:54 UTC, Stef Walter
no flags Details

Description Stef Walter 2015-09-09 11:39:14 UTC
Description of problem:

kubectl logs --follow hash now regressed.

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

kubernetes-1.1.0-0.5.gite44c8e6.fc22.x86_64

How reproducible:

Every time.

Steps to Reproduce:
1. kubectl create -f <attachment>
2. kubectl get pods
3. kubectl logs --follow <pod>

Actual results:

Hangs.

Expected results:

Show the log output.

Additional info:

docker logs on the same container works.

Comment 1 Stef Walter 2015-09-09 11:41:53 UTC
Created attachment 1071695 [details]
Test case

Comment 2 Stef Walter 2015-09-09 11:50:27 UTC
This build works: http://koji.fedoraproject.org/koji/buildinfo?buildID=670280

Comment 3 Stef Walter 2015-09-10 15:54:51 UTC
Created attachment 1072268 [details]
Test case

Updated to simpler test case file.

Comment 4 Stef Walter 2015-09-10 16:14:25 UTC
Tested against kubernetes git master. Fails there too. Filed issue: https://github.com/kubernetes/kubernetes/issues/13811

Comment 5 Stef Walter 2015-09-15 10:44:39 UTC
This build fixes the issue:

# rpm -q kubernetes
kubernetes-1.1.0-0.16.git388061f.fc22.x86_64

Jan, if you have narrowed it down, could you report upstream where the breakage was? https://github.com/kubernetes/kubernetes/issues/13811

Comment 6 Jan Chaloupka 2015-09-15 10:45:59 UTC
Actually, kubernetes-1.1.0-0.16.git388061f is kubernetes-1.0.6. Did not want to introduce Epoch and mess with the spec file. Once 1.1.0 is stable, version will continue.

Comment 7 Jan Chaloupka 2015-09-15 10:48:34 UTC
$ kubectl version
will return the correct version. In AH or cockpit, rpm -q kubernetes is not used so often I suppose. So it will not matter. All blame for this hack on me.

Comment 8 Scott Dodson 2015-09-29 21:08:07 UTC
Seems the fix is here https://github.com/kubernetes/kubernetes/pull/13864

Comment 9 Stef Walter 2016-02-02 08:17:19 UTC
This is still the case on Fedora 22.

Comment 10 Stef Walter 2016-02-02 08:21:46 UTC
$ rpm -q kubernetes-client
kubernetes-client-1.1.0-0.5.gite44c8e6.fc22.x86_64
$ rpm -q kubernetes
kubernetes-1.1.0-0.5.gite44c8e6.fc22.x86_64

$ wget -O test.json 'https://bugzilla.redhat.com/attachment.cgi?id=1072268'
$ kubectl create -f test.json
$ kubectl get pods # get name and wait until running
$ kubectl logs --follow mock-vp4k6
^C

$ kubectl logs --follow mock-vp4k6
HelloMessage.
HelloMessage.
HelloMessage.
HelloMessage.
HelloMessage.
HelloMessage.
HelloMessage.
HelloMessage.
...

sudo docker logs --follow on the same machine works, as does 'kubectl logs mock-vp4k6' without --follow.

Comment 11 Fedora Update System 2016-02-02 09:51:38 UTC
kubernetes-1.1.0-0.17.git388061f.fc22 has been submitted as an update to Fedora 22. https://bodhi.fedoraproject.org/updates/FEDORA-2016-b8c9642851

Comment 12 Fedora Update System 2016-02-03 01:21:08 UTC
kubernetes-1.1.0-0.17.git388061f.fc22 has been pushed to the Fedora 22 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-b8c9642851

Comment 13 Fedora Update System 2016-04-20 15:17:34 UTC
kubernetes-1.1.0-0.17.git388061f.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.


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