Rancher 1.6.14 -etcd cluster has no leader

Hi,

I created a Kubernetes cluster using Rancher UI on Azure cloud. I want to deploy ONAP on the kubernetes cluster created. When I’m trying to deploy, sometimes it is giving me this error:
“Error: release beijing failed: client: etcd member http://etcd.kubernetes.rancher.internal:2379 has no leader”
When I check from the UI, the etcd is in healthy state.does anyone face a similar issue and is there any way to get over this? Please help.
Configurations:
DOCKER_VERSION=17.03
RANCHER_VERSION=1.6.14
KUBECTL_VERSION=1.8.10
HELM_VERSION=2.8.2

NSG on azure cloud: