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https://docs.openshift.com/enterprise/latest/install_config/aggregate_logging.html#pre-deployment-configuration "$ oc secrets new metrics-deployer nothing=/dev/null" There are several examples like this. I can be confusing if you don't know what you're doing.
This was fixed here: https://docs.openshift.com/enterprise/3.1/install_config/aggregate_logging.html#pre-deployment-configuration Closing this bug.