In this article, we will discuss where
ntpdate gets its settings from and how to resolve the “No servers can be used” error. This error typically occurs when
ntpdate is unable to find any valid Network Time Protocol (NTP) servers to synchronize with.
ntpdate command gets its settings from the command line argument or the
/etc/default/ntpdate file. To fix the "No servers can be used" error, check your configuration, ensure network connectivity, check firewall settings, and consider updating
ntpdate to the latest version.
ntpdate is a command-line utility used to update the system’s date and time via the network. It does this by querying NTP servers and adjusting the system time accordingly.
Where Does ntpdate Get Its Settings From?
ntpdate command does not have a dedicated configuration file. Instead, the NTP server is provided as an argument when running the command. For instance, the command
ntpdate ntp.ubuntu.com will query the
However, there is a Debian-specific version of
ntpdate known as
ntpdate-debian. This version does have a configuration file located at
/etc/default/ntpdate. You can edit this file to specify the NTP server you want to use.
How to Fix “No Servers Can Be Used” Error?
The “No servers can be used” error typically occurs when
ntpdate cannot find a valid NTP server to synchronize with. This could be due to incorrect configuration or network connectivity issues.
Here are some steps you can take to resolve this issue:
- Check Your Configuration: If you’re using
ntpdate-debian, ensure that the NTP server specified in
/etc/default/ntpdateis correct and accessible. If you’re using
ntpdate, ensure that you’re providing a valid NTP server as an argument.
- Check Network Connectivity: Ensure that your system has a stable internet connection and can reach the NTP server. You can test this by pinging the NTP server.
- Check Firewall Settings: Ensure that your firewall is not blocking NTP traffic. NTP uses UDP on port 123, so ensure that this port is open.
- Update ntpdate: If you’re still encountering issues, it might be worth updating
ntpdateto the latest version.
ntpdate gets its settings from the command line or from the
/etc/default/ntpdate file if you’re using
ntpdate-debian. If you encounter the “No servers can be used” error, it’s likely due to incorrect configuration or network issues. By following the steps outlined above, you should be able to resolve this issue and successfully synchronize your system time with an NTP server.
ntpdate is a command-line utility used to update the system’s date and time via the network by querying NTP servers and adjusting the system time accordingly.
ntpdate gets its settings from the command line arguments provided when running the command. For Debian systems using
ntpdate-debian, the settings can be found in the
/etc/default/ntpdate configuration file.
You can check network connectivity to the NTP server by using the
ping command followed by the IP address or domain name of the server. For example:
ping ntp.ubuntu.com. If successful, you should receive responses from the server.
NTP uses UDP on port 123 for communication. Ensure that your firewall is not blocking this port to allow NTP traffic.
ntpdate command does not have a dedicated configuration file. However, for Debian systems using
ntpdate-debian, the configuration file can be found at