Kube-proxy with IPVS mode turns out nodes become unreachable

General Discussions
1

When IPVS mode is set with k8s 1.11.0 cluster, one of nodes become unreachable from other node, that brings down etcd cluster and eventually k8s. The unreachable node can be reached from outside of cluster. The nodes are VM. Any insight about the issue?

kernel is 4.12.8-1.el7.elrepo.x86_64. Network interface names ens192.

Thanks

2

it turn out to be calico issue, which starts supporting ipvs from 3.1.Unfortunately, 2.X is running under the hood.