systemd Developer Lennart Poettering lennart@poettering.net timesyncd.conf 5 timesyncd.conf timesyncd.conf.d Network Time Synchronization configuration files /etc/systemd/timesyncd.conf /etc/systemd/timesyncd.conf.d/*.conf /run/systemd/timesyncd.conf.d/*.conf /usr/lib/systemd/timesyncd.conf.d/*.conf These configuration files control NTP network time synchronization. The following settings are configured in the [Time] section: NTP= A space-separated list of NTP server host names or IP addresses. During runtime this list is combined with any per-interface NTP servers acquired from systemd-networkd.service8. systemd-timesyncd will contact all configured system or per-interface servers in turn until one is found that responds. When the empty string is assigned, the list of NTP servers is reset, and all assignments prior to this one will have no effect. This setting defaults to an empty list. FallbackNTP= A space-separated list of NTP server host names or IP addresses to be used as the fallback NTP servers. Any per-interface NTP servers obtained from systemd-networkd.service8 take precedence over this setting, as do any servers set via NTP= above. This setting is hence only used if no other NTP server information is known. When the empty string is assigned, the list of NTP servers is reset, and all assignments prior to this one will have no effect. If this option is not given, a compiled-in list of NTP servers is used instead. systemd1, systemd-timesyncd.service8, systemd-networkd.service8