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- To: "chrony-users@xxxxxxxxxxxxxxxxxxxx" <chrony-users@xxxxxxxxxxxxxxxxxxxx>
- Subject: [chrony-users] Chrony server transition behavior
- From: Antoine Sgambato <asgambato@xxxxxxxxxxxxx>
- Date: Mon, 16 Nov 2020 17:39:37 +0000
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- Thread-index: AQHWvD3RMyelOZGpY0eBOiKXtHUJvQ==
- Thread-topic: Chrony server transition behavior
I am trying to understand how chrony transition from a time server.
Lets consider a Chrony client synchronized with a sole and unique server. Synchronization is established with no problem.
Now I remove this server from my chrony configuration (with the chronyc delete command). I expect my Chony client to become either in local or un-synchronized state (depending on whether the local mode has been enabled or not).
And it does so, but it takes some time : As soon as the server is deleted from my config, I have a log that says "Can't synchronise: no selectable sources" (and chronyc sources returns an empty list) but the tracking command says it is still synchronized with the server for well other than 2 hours before switching to the local mode (in my case).
I suspect that, as the synchro was well established (drifts parameters have been calculated and stored in the drift file), Chrony considers itself as still synchronized with a source for some time even if the is no more communications with this source.
Is this reasoning correct? and are there some configuration parameters that affect this delay?
Thank you for any clarification!
Antoine.
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