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2ea20f598a
This is a complete rewrite of time sync process. Now the time sync process starts early at boot time, and it adapts to configuration changes: * before config is available, `pool.ntp.org` is used * once config is available, configured time servers are used Controller updates same time sync resource as other controllers had dependency on, so they have a chance to wait for the time sync event. Talos services which depend on time now wait on same resource instead of waiting on timed health. New features: * time sync now sticks to the particular time server unless there's an error from that server, and server is changed in that case, this improves time sync accuracy * time sync acts on config changes immediately, so it's possible to reconfigure time sync at any time * there's a new 'epoch' field in time sync resources which allows time-dependent controllers to regenerate certs when there's a big enough jump in time Features to implement later: * apid shouldn't depend on timed, it should be started early and it should regenerate certs on time jump * trustd should be updated in same way Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
19 lines
711 B
Go
19 lines
711 B
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package ntp
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import "time"
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const (
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// MaxAllowablePoll is the 'recommended' interval for querying a time server.
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MaxAllowablePoll = 1024 * time.Second
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// MinAllowablePoll is the minimum time allowed for a client to query a time server.
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MinAllowablePoll = 4 * time.Second
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// AdjustTimeLimit is a maximum time drift to compensate via adjtimex().
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AdjustTimeLimit = 128 * time.Millisecond
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// EpochLimit is a minimum time difference to signal that change as epoch change.
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EpochLimit = 15 * time.Minute
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)
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