The synchronization target of NTP client does not change for a long time

Solution Verified - Updated -

Issue

  • There are RHEL6.2 NTP server and client. They are synchronized from ntpd of the NTP client.
  • The following occurred when the NTP server which was synchronized from ntpd of NTP client was stopped.
  • The synchronization target of NTP client which was displayed by ntpq command did not change even if a long time (90 minutes or more) had passed since ntpd of the NTP server was stopped.
  • Could you tell us the cause that the synchronization target of NTP client does not change for a long time when the NTP server stops?
  • Could you tell us what data needs to be gathered to investigate the cause?

Environment

  • Red Hat Enterprise Linux 6 Update 2
  • Package Version: ntp-4.2.4p8-2.el6

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