Bug 1819548

Summary: pod failed to communicate to itself
Product: OpenShift Container Platform Reporter: Rajnikant <rkant>
Component: NetworkingAssignee: Ben Bennett <bbennett>
Networking sub component: ovn-kubernetes QA Contact: zhaozhanqi <zzhao>
Status: CLOSED ERRATA Docs Contact:
Severity: high    
Priority: high CC: aconstan, augol, dcbw, jzaher, rkhan, sgordon, zzhao
Version: 4.3.zFlags: augol: needinfo? (rkant)
Target Milestone: ---   
Target Release: 4.5.0   
Hardware: Unspecified   
OS: Unspecified   
Fixed In Version: Doc Type: Rebase: Bug Fixes Only
Doc Text:
Important: if this rebase also contains *enhancements* (or contains only enhancements), select the correct option from the Doc Type drop-down list. Rebase package(s) to version: OVS/OVN bumped to 2.13 Highlights and important bug fixes: Fixed hairpin mode (so a pod can talk to itself through a service)
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-07-13 17:24:43 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:
Bug Depends On: 1819876    
Bug Blocks:    

Description Rajnikant 2020-04-01 03:09:17 UTC
Description of problem:
pod failed to communicate to itself

Version-Release number of selected component (if applicable):
Server Version: 4.3.5

How reproducible:

    networkType: OVNKubernetes

pod to itself communication was failing with connection timeout. 

* connect to 172.30.x.x port 80 failed: Connection timed out

Steps to Reproduce:

Actual results:

Expected results:

Additional info:

Comment 3 Ben Bennett 2020-04-01 14:12:26 UTC
Setting the target to 4.5.  We will make backport decisions once the bug is understood.

Comment 8 zhaozhanqi 2020-04-21 06:17:56 UTC
Tested this issue on 4.3.0-0.nightly-2020-04-20-084750, this should be working, see:

 $oc create -f list_for_pods.json 
replicationcontroller/test-rc created
service/test-service created
$ oc get svc
NAME           TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)     AGE
test-service   ClusterIP   <none>        27017/TCP   5s
$ oc get pod
test-rc-5ql59   1/1     Running   0          9s
test-rc-8b77h   1/1     Running   0          9s
$ oc rsh test-rc-5ql59
~ $ curl test-service:27017
Hello OpenShift!

Comment 11 errata-xmlrpc 2020-07-13 17:24:43 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.