2.3. Disabling a NetworkManager dispatcher script


The chrony dispatcher script manages the online and offline state of the NTP servers. As a system administrator, you can disable the dispatcher script to keep chronyd polling the servers constantly.

The NetworkManager executes the chrony dispatcher script during interface reconfiguration, stop or start operations. However, if you configure certain interfaces or routes outside of NetworkManager, you can encounter the following situation:

  1. The dispatcher script might run when no route to the NTP servers exists, causing the NTP servers to switch to the offline state.
  2. If you establish the route later, the script does not run again by default, and the NTP servers remain in the offline state.

To ensure that chronyd can synchronize with your NTP servers, which have separately managed interfaces, disable the dispatcher script.

Procedure

  • To disable the chrony dispatcher script, create a symlink to /dev/null:

    # ln -f -s /dev/null /etc/NetworkManager/dispatcher.d/20-chrony-onoffline
    참고

    After this change, the NTP servers remain in the online state at all times.

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