Chrony: Chronyd is not synchronizing with NTP server.

Issue

chrony cannot sync with server with error message: Chronyd is not synchronizing with NTP server.

$ chronyd -q 'server x.x.x.x iburst'
2023-10-16T04:51:28Z chronyd version 4.1 starting (+CMDMON +NTP +REFCLOCK +RTC +PR IVDROP +SCFILTER +SIGND +ASYNCDNS +NTS +SECHASH +IPV6 +DEBUG)
2023-10-16T04:51:28Z Initial frequency -13.484 ppm
2023-10-16T04:51:43Z chronyd exiting

Resolution

  • Check firewall to NTP Server port 123 UDP

  • Check routing to NTP Server

  • Maybe any firewall drop NTP packet.

  • Use another IP of NTP Server interface.