Generate a config with:
$ openshift start master --write-config=./cluster-config
Update the config:
# edit ./cluster-config/master-config.yaml
# set masterIPEnvVarName to "POD_IP"
# set the etcd client URL to http://etcd:2379
# TODO: setup client certs
# clear the etcd config section
Create a secret for the master config and start the config
$ oc secrets new master-config ./cluster-config
$ oc secrets add sa/default secrets/master-config
$ oc create -f examples/ha/openshift-ha.yaml