From: https://access.redhat.com/documentation/en/openshift-container-platform/3.3/paged/installation-and-configuration/chapter-3-setting-up-the-registry#comment-1111071

"3.4.2.2. Exposing a Non-Secure Registry - A few things need to be changed here in the documentation

Check the health of the registry in your web browser: http://registry.example.com/healthz does not return any results. It is just a blank page. just HTTP 200/OK

About entry - OPTIONS='--selinux-enabled --insecure-registry=172.30.0.0/16 --insecure-registry registry.ose-node.openshift.com:443'

The above should be added on the client box from which you are trying to login. If you are reading the previous section, you may confuse and add this to master and all nodes. That is not required. Just add it to the client.

--insecure-registry registry.ose-node.openshift.com:443 should be --insecure-registry registry.ose-node.openshift.com:80. When you expose insecure registry you are not using https."

Once fixed, please leave a comment letting the reader know.