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Is the router actually serving the wrong cert when you hit it? openssl s_client -connect your.router.here:443 As Jordan said, the OPENSHIFT_CA_DATA is used to authenticate the master to the clients to make sure no one is messing with the internal API server traffic. You can unpack the ha-router-primary-certs secret to see what that contains (since that is what we use in haproxy for the default cert).
Closing since there has been no update for two months and it looked like misconfiguration.