Created attachment 1302185 [details] ansible-playbook with the -vvv flag Description of problem: When using invalid characters in hostnames, such as "-" the installer finishes and it only mention that the node failed once in the RECAP section. Version-Release number of the following components: # rpm -q openshift-ansible openshift-ansible-3.5.91-1.git.0.28b3ddb.el7.noarch # rpm -q ansible ansible-2.2.3.0-1.el7.noarch # ansible --version ansible 2.2.3.0 config file = /etc/ansible/ansible.cfg configured module search path = Default w/o overrides How reproducible: Always Steps to Reproduce: 1. Use an invalid character in the hostname of a node/master 2. 3. Actual results: Please include the entire output from the last TASK line through the end of output if an error is generated Expected results: Installation to fail with an explicit message and installation not to finish Additional info: In the node that fail to register, you can find the following in the atomic-openshift-node logs: - Jul 21 08:53:15 node35_1.example.com atomic-openshift-node[23719]: E0721 08:53:15.769185 23719 kubelet_node_status.go:98] Unable to register node "node35_1" with API server: Node "node35_1" is invalid: metadata.name: Invalid value: "node35_1": must match the regex [a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)* (e.g. 'example.com')