Rancher 2.0 certificate error

Deployed three node rancher 2.0, rancher came up without any issue and able to access it.
But while initiating the external cluster import, getting this error from cluster agent and node agent. level=error msg=“Failed to connect to proxy” error=“x509: certificate signed by unknown authority”

Tried using external loadbalancer (layer7) certificate termination and ingress level termination with same error.
Certificate(wild card) used is authorised from godaddy.