Ubuntu ntp not updating time

11 Mar

Amazon provides the Amazon Time Sync Service, which you can access from your instance.This service uses a fleet of satellite-connected and atomic reference clocks in each AWS Region to deliver accurate current time readings of the Coordinated Universal Time (UTC) global standard through Network Time Protocol (NTP).Most people just want to get NTP running and don’t need to sync their clock to pinpoint, millisecond-level accuracy. When you installed NTP, it set you up with default servers to sync with. Use the default settings for your specific Linux distribution.With more than one server entry, your NTP server will query all servers and select a time that the majority of the polled servers agree on.NTP uses UDP port 123 to conduct its business, either connecting out to another NTP server or accepting incoming connections.

Adding the i Burst option after the server address will speed up the NTP time sync slightly. The dynamic option tells NTP that it can try a configured server again later if it’s unavailable at some point.A consistent and accurate time reference is crucial for many server tasks and processes.Most system logs include a time stamp that you can use to determine when problems occur and in what order the events take place.Use the following procedures to configure the Amazon Time Sync Service on your instance using the Amazon Linux instances are set to the UTC (Coordinated Universal Time) time zone by default, but you may wish to change the time on an instance to the local time or to another time zone in your network.Keeping your system’s date and time accurate is easy to do using NTP.