Installing OpenShift Fails at "Verifying API Server" Stage

Issue

• Installing OpenShift fails at Verify API Server step
• Using certificate on loadbalancer

RUNNING HANDLER [openshift_master : Verify API Server] *************************

fatal: [master.example.com]: FAILED! => {"changed": false, "cmd": ["curl", "--silent", "--cacert", "/etc/origin/master/ca-bundle.crt", "https://master.example.com:8443/healthz/ready"], "delta": "0:00:00.152842", "end": "2016-09-20 14:24:00.125095", "failed": true, "rc": 60, "start": "2016-09-20 14:23:59.972253", "stderr": "", "stdout": "", "stdout_lines": [], "warnings": ["Consider using get_url or uri module rather than running curl"]}
FAILED - RETRYING: HANDLER: openshift_master : Verify API Server (3 retries left).
FAILED - RETRYING: HANDLER: openshift_master : Verify API Server (3 retries left).
FAILED - RETRYING: HANDLER: openshift_master : Verify API Server (2 retries left).
FAILED - RETRYING: HANDLER: openshift_master : Verify API Server (2 retries left).
FAILED - RETRYING: HANDLER: openshift_master : Verify API Server (1 retries left).
FAILED - RETRYING: HANDLER: openshift_master : Verify API Server (1 retries left).
fatal: [master.example.com]: FAILED! => {"changed": false, "cmd": ["curl", "--silent", "--cacert", "/etc/origin/master/ca-bundle.crt", "https://master.example.com:8443/healthz/ready"], "delta": "0:00:00.152788", "end": "2016-09-20 14:24:04.673051", "failed": true, "rc": 60, "start": "2016-09-20 14:24:04.520263", "stderr": "", "stdout": "", "stdout_lines": [], "warnings": ["Consider using get_url or uri module rather than running curl"]}
fatal: [master.example.com]: FAILED! => {"changed": false, "cmd": ["curl", "--silent", "--cacert", "/etc/origin/master/ca-bundle.crt", "https://master.example.com:8443/healthz/ready"], "delta": "0:00:00.151121", "end": "2016-09-20 14:24:05.225776", "failed": true, "rc": 60, "start": "2016-09-20 14:24:05.074655", "stderr": "", "stdout": "", "stdout_lines": [], "warnings": ["Consider using get_url or uri module rather than running curl"]}