[K8s-R5.0]: ECMP route of a service not having more than 2 entries

[Pulkit Tandon]

Kubernetes
R5.0 (Mainline)
Issue observed post CB build 85
Ocata
Ubuntu16.04

Setup:
HA setup with 3 Control nodes. 1 Kube master
2 compute nodes

Issue:
Created a deployment with 3 replicas.
Created a service which was having the 3 pods of deployment as end points.
Observed that 1 of the pod never responded.

On debugging, found that the route corresponding to the service was having only 2 entries.
3rd entry was missing from ECMP route.
Thus only 2 Pods were responding.
This is consistent issue and observed in Build 83 and 85 as well.

[Yuvaraja Mariappan (ymariappan)]

Instance ip has 3 routes in the config. Reassigning to naveen to take a look.

Thanks,
Yuvaraja

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/38852
Submitter: Naveen N (<email address hidden>)

[Ato (amonge)]

I tested the fix and it works fine.

[OpenContrail Admin (ci-admin-f)]

Reviewed: https://review.opencontrail.org/38852
Committed: http://github.com/Juniper/contrail-controller/commit/9d9355a7878af4757f29e9e3c5301873f3ee2e56
Submitter: Zuul (<email address hidden>)
Branch: master

commit 9d9355a7878af4757f29e9e3c5301873f3ee2e56
Author: Naveen N <email address hidden>
Date: Fri Jan 12 14:11:42 2018 +0530

* Set path prefernce for interface in underlay mode

VMI would be programmed with ip-fabric:__default__ as VRF in
vrouter when the VM is enabled for underlay forwarding, in that
case if ARP response would be received in ip-fabric:__default__
vrf and agent has to copy the preference to overlay VRF.

Change-Id: I75b9eddbed0adca755c1840ab03e5cf79439c2a0
Closes-bug: #1742065

[Pulkit Tandon (pulkitt)]

Associated failed Sanity Test case:

TestPodDeployment.test_deployment_1
TestPodDeployment.test_deployment_replica_updation
TestService.test_service_scale_up_down
TestServiceVNIsolated.test_service_scale_up_down

[Pulkit Tandon (pulkitt)]

Verified on Mainline CB build 92 - coat - ubuntu-16.04.
All above test cases passed.
Hence closing the bug