Bug 1310033

Summary:	The existing netnamespace id should be removed after switch network plugin to openshift-ovs-subnet
Product:	OpenShift Container Platform	Reporter:	Meng Bo <bmeng>
Component:	Networking	Assignee:	Eric Paris <eparis>
Status:	CLOSED WONTFIX	QA Contact:	Meng Bo <bmeng>
Severity:	low	Docs Contact:
Priority:	medium
Version:	3.2.0	CC:	aos-bugs, bbennett
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Fixed In Version:		Doc Type:	Bug Fix
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Last Closed:	2016-04-12 19:13:24 UTC	Type:	Bug
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Description Meng Bo 2016-02-19 09:44:56 UTC

Description of problem:
After switch network plugin from multitenant to flat, the existing netnamespace id still can be queried from api.

Version-Release number of selected component (if applicable):
openshift v3.1.1.903

How reproducible:
always

Steps to Reproduce:
1. Setup multi node env with ovs-multitenant networking plugin
2. Create some projects by user
3. Switch the network plugin to ovs-subnet
4. Check the netnamespace via cluster-admin
# oc get netnamespace

Actual results:
The old netnamespace still can be listed.

Expected results:
They should be deleted when switching to flat network.

Additional info:
# oc get netnamespace 
NAME               NETID
default            0
management-infra   12
openshift          10
openshift-infra    11
u1p1               13

Comment 1 Ben Bennett 2016-04-12 19:13:24 UTC

We don't want to teach core or other plugins about all of the cleanup that a plugin would need.  And if you flipped back and forth between the plugins you may not want the netns to be cleaned.