Using rke, I have installed kubernetes v1.12.1
I then installed rancher ui v 2.1.0.
I constantly see the below message in the cattle cluster and node logs:
time=“2018-11-27T17:09:19Z” level=info msg=“Connecting to wss://xx.xx.xx.local/v3/connect with token 4nzpj48zz4zjgzqgq6scw42j94xj7qq4wvhdwdltqhtjjnzx48xqw5”
time=“2018-11-27T17:09:19Z” level=info msg=“Connecting to proxy” url=“wss://xx.xx.xx.xx.local/v3/connect”
time=“2018-11-27T17:09:20Z” level=error msg=“Failed to connect to proxy” error=“x509: certificate is valid for ingress.local, not xx.xx.xx.xx.sandbox.local”
looks like the certificate that is generated has CN=ingress.local and not the ***.sandbox.local. It should have the FQDN as part of CN or Subject Alternative Names.