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Bug 1445501 - On a single-node cluster, multicast is never correctly set up.
On a single-node cluster, multicast is never correctly set up.
Status: CLOSED ERRATA
Product: OpenShift Container Platform
Classification: Red Hat
Component: Networking (Show other bugs)
3.5.0
Unspecified Unspecified
unspecified Severity high
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Assigned To: Ben Bennett
Meng Bo
:
Depends On:
Blocks: 1445502
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Reported: 2017-04-25 15:54 EDT by Ben Bennett
Modified: 2017-08-16 15 EDT (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Cause: The code to set up multicast was not run when only one node was in the cluster. Consequence: Multicast traffic was dropped when on a single-node cluster. Fix: Change the rules so the multicast setup is performed for a single-node. Result: Multicast works for single-node clusters.
Story Points: ---
Clone Of:
: 1445502 (view as bug list)
Environment:
Last Closed: 2017-08-10 01:21:25 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Origin (Github) 13309 None None None 2017-04-25 15:54 EDT
Red Hat Product Errata RHEA-2017:1716 normal SHIPPED_LIVE Red Hat OpenShift Container Platform 3.6 RPM Release Advisory 2017-08-10 05:02:50 EDT

  None (edit)
Description Ben Bennett 2017-04-25 15:54:17 EDT 
Description of problem:

On a single-node cluster, multicast packets are not delivered.


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

3.5.0

How reproducible:

Always

Steps to Reproduce:
1. Create a single node cluster
2. Create a pod to receive multicast packets
3. Create a pod to send multicast packets
4. Watch for multicast delivery

Actual results:

At step 4, no packets are delivered.

Expected results:

At step 4, packets should be delivered.

Additional info:
Comment 2 hongli 2017-06-05 03:27:34 EDT 
verified in atomic-openshift-3.6.94-1.git.0.ba4aad2.el7.x86_64 and the issue has been fixed.
Comment 4 errata-xmlrpc 2017-08-10 01:21:25 EDT 
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/RHEA-2017:1716
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