Changing NTP servers Before you beginEnsure that you have the list of NTP servers. ProcedureConnect to e1n1 by using the application floating IP. Update the time_servers value in the .yml file by following Time servers section. Validate the YAML file. Test the YAML file and run the playbooks. Run: /opt/ibm/appliance/platform/apos-comms/tools/aposTimeCheck.py to verify that it passes.