jochen
21d8a7f6b4
Three machines ran timesyncd and one ran ntpd. The module declares timesyncd running with a 50-mesh.conf drop-in (European pool) and ntp absent (hq ADR 0180). A run-once step of its Go binary stops and disables ntpd first and takes out only dangling wants-links, so removing the package leaves no enabled unit pointing at nothing. A provider's drop-in sorting after the mesh's still wins and is reported, not removed. Tools: time_sync_status, _servers, _sync_now (to-be 42 Phase 1).
2.2 KiB
2.2 KiB
time-sync
The machine's clock, kept by one daemon: systemd-timesyncd (novox/hq to-be 42 Phase 1, research 027).
What it owns
/etc/systemd/timesyncd.conf.d/50-mesh.conf, written whole:NTP=the four European pool servers,FallbackNTP=the distribution's pool.systemd-timesyncd.service, running and enabled, and restarted when the drop-in changes.ntp, declared absent (ADR 0180).- A step,
time-sync-retire-ntpd. The host runs the module's own binary once per version of the bundle, as root, before timesyncd is started and ntp removed:time-sync-tools retire ntpd.service ntpdate.service. The step stops and disables each unit that is installed and running or enabled. Removing a package does not disable its units, so without the step ntp's removal would leavemulti-user.target.wants/ntpd.servicepointing at nothing. Where the package is already gone, the step takes out only such a dangling link, never a link it can still follow.
What it improves
- One daemon on every machine. Three ran timesyncd and one ran ntpd, with timesyncd disabled.
- The servers are declared, not left to whatever a machine was installed with. One machine had
edited
timesyncd.confitself; the drop-in now overrides that.
What it leaves found
- A hosting provider's own drop-in. On a machine whose provider installed a timesyncd drop-in
(found on the anchor), that file sorts after
50-mesh.conf, so its servers win. They are in the same network as the machine. It is kept, andtime_sync_serversnames it as the file that decides. /etc/systemd/timesyncd.conf, and an/etc/ntp.confthat the package manager keeps as.pacsave.
Tools
| tool | answers | |
|---|---|---|
time_sync_status |
r | synchronised, NTP on, timesyncd's unit; server, offset, delay, jitter (ms), stratum, packets, and every line of timesync-status; any other time daemon installed. If timesyncd is not running, that is said, not failed |
time_sync_servers |
r | the server in use; system, fallback, link and runtime servers; every config file in reading order with what it sets; which file decides |
time_sync_sync_now |
a | restarts timesyncd (sudo -n) and answers the status after waiting up to 10 s for a packet |