Classification: FMOS
Category: System configuration issue
Context: NTP Client
Severity: Error
Summary
The NTP client has not yet selected a time source for synchronization.
Description
This warning appears when the NTP client, chrony, is configured with one or more time sources (NTP servers), but has not yet selected one for synchronization.
Impact
Until the NTP client selects a time source for synchronization and identifies the process for adjusting the local system clock, timekeeping may be inaccurate on the current system. The system clock may have an incorrect date and/or time, and it may not correctly count time intervals. Applications running on this system may behave poorly, and data added to the system may appear out of order.
Cause
There are a few situations that may cause this issue:
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None of the configured time sources are available.
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The local system clock differs significantly from all of the configured time sources.
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Network latency and/or data loss is interfering with communication with the configured time sources.
Resolution 1
In most cases, this warning will clear on its own. Once the NTP client has enough information from the configured time sources, it will be able to choose the best one and determine how to correct the system clock. In some situations, collecting this information may take a considerable amount of time.
Resolution 2
There may be a problem communicating with the configured time sources.
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If the time sources are configured using DNS host names, verify that the names resolve to the correct IP addresses.
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Verify that the addresses of the configured time sources are reachable from the current machine.
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Ensure that the configured time sources are configured to accept NTP client communication from the current machine.,
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Confirm that network communication between the current machine and the configured time sources is not hindered by high latency or data loss.
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