Which service provides time-sync.target in systemd?
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How can I recognize which service provides time-sync.target in systemd? Is it configurable or is it hardcoded in systemd? How can I configure my custom time-sync daemon/service to provide this target?
systemd date
edited Dec 5 at 13:42
Jeff Schaller
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asked Dec 5 at 13:16
Filip Havlíček
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up vote
4
down vote
favorite
How can I recognize which service provides time-sync.target in systemd? Is it configurable or is it hardcoded in systemd? How can I configure my custom time-sync daemon/service to provide this target?
systemd date
edited Dec 5 at 13:42
Jeff Schaller
38.1k1053124
asked Dec 5 at 13:16
Filip Havlíček
232
add a comment |
up vote
4
down vote
favorite
up vote
4
down vote
favorite
How can I recognize which service provides time-sync.target in systemd? Is it configurable or is it hardcoded in systemd? How can I configure my custom time-sync daemon/service to provide this target?
systemd date
edited Dec 5 at 13:42
Jeff Schaller
38.1k1053124
asked Dec 5 at 13:16
Filip Havlíček
232
How can I recognize which service provides time-sync.target in systemd? Is it configurable or is it hardcoded in systemd? How can I configure my custom time-sync daemon/service to provide this target?
systemd date
systemd date
edited Dec 5 at 13:42
Jeff Schaller
38.1k1053124
asked Dec 5 at 13:16
Filip Havlíček
232
edited Dec 5 at 13:42
Jeff Schaller
38.1k1053124
asked Dec 5 at 13:16
Filip Havlíček
232
edited Dec 5 at 13:42
Jeff Schaller
38.1k1053124
edited Dec 5 at 13:42
Jeff Schaller
38.1k1053124
edited Dec 5 at 13:42
Jeff Schaller
38.1k1053124
38.1k1053124
asked Dec 5 at 13:16
Filip Havlíček
232
asked Dec 5 at 13:16
Filip Havlíček
232
asked Dec 5 at 13:16
Filip Havlíček
232
232
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
up vote
5
down vote
accepted
Run
systemctl show time-sync.target
to see the information and configuration maintained by systemd for this target. In particular, this will tell you that it is part of the special systemd units and documented there:
Services responsible for synchronizing the system clock from a remote source (such as NTP client implementations) should pull in this target and order themselves before it. All services where correct time is essential should be ordered after this unit, but not pull it in. systemd automatically adds dependencies of type
After=for this target unit to all SysV init script service units with an LSB header referring to the "$time" facility.
It is fully configurable (use systemctl edit to override any aspect you want to). As mentioned above, services which provide time synchronisation (e.g. systemd-timesyncd.service) declare that they want this target, and order themselves before it; services which need time synchronisation order themselves after it.
To configure a time synchronisation service, copy the relevant parts of systemd-timesync’s configuration:
[Unit]
Before=time-sync.target
Wants=time-sync.target
answered Dec 5 at 13:34
Stephen Kitt
162k24360438
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
5
down vote
accepted
Run
systemctl show time-sync.target
to see the information and configuration maintained by systemd for this target. In particular, this will tell you that it is part of the special systemd units and documented there:
Services responsible for synchronizing the system clock from a remote source (such as NTP client implementations) should pull in this target and order themselves before it. All services where correct time is essential should be ordered after this unit, but not pull it in. systemd automatically adds dependencies of type
After=for this target unit to all SysV init script service units with an LSB header referring to the "$time" facility.
It is fully configurable (use systemctl edit to override any aspect you want to). As mentioned above, services which provide time synchronisation (e.g. systemd-timesyncd.service) declare that they want this target, and order themselves before it; services which need time synchronisation order themselves after it.
To configure a time synchronisation service, copy the relevant parts of systemd-timesync’s configuration:
[Unit]
Before=time-sync.target
Wants=time-sync.target
answered Dec 5 at 13:34
Stephen Kitt
162k24360438
add a comment |
up vote
5
down vote
accepted
Run
systemctl show time-sync.target
to see the information and configuration maintained by systemd for this target. In particular, this will tell you that it is part of the special systemd units and documented there:
Services responsible for synchronizing the system clock from a remote source (such as NTP client implementations) should pull in this target and order themselves before it. All services where correct time is essential should be ordered after this unit, but not pull it in. systemd automatically adds dependencies of type
After=for this target unit to all SysV init script service units with an LSB header referring to the "$time" facility.
It is fully configurable (use systemctl edit to override any aspect you want to). As mentioned above, services which provide time synchronisation (e.g. systemd-timesyncd.service) declare that they want this target, and order themselves before it; services which need time synchronisation order themselves after it.
To configure a time synchronisation service, copy the relevant parts of systemd-timesync’s configuration:
[Unit]
Before=time-sync.target
Wants=time-sync.target
answered Dec 5 at 13:34
Stephen Kitt
162k24360438
add a comment |
up vote
5
down vote
accepted
up vote
5
down vote
accepted
Run
systemctl show time-sync.target
to see the information and configuration maintained by systemd for this target. In particular, this will tell you that it is part of the special systemd units and documented there:
Services responsible for synchronizing the system clock from a remote source (such as NTP client implementations) should pull in this target and order themselves before it. All services where correct time is essential should be ordered after this unit, but not pull it in. systemd automatically adds dependencies of type
After=for this target unit to all SysV init script service units with an LSB header referring to the "$time" facility.
It is fully configurable (use systemctl edit to override any aspect you want to). As mentioned above, services which provide time synchronisation (e.g. systemd-timesyncd.service) declare that they want this target, and order themselves before it; services which need time synchronisation order themselves after it.
To configure a time synchronisation service, copy the relevant parts of systemd-timesync’s configuration:
[Unit]
Before=time-sync.target
Wants=time-sync.target
answered Dec 5 at 13:34
Stephen Kitt
162k24360438
Run
systemctl show time-sync.target
to see the information and configuration maintained by systemd for this target. In particular, this will tell you that it is part of the special systemd units and documented there:
Services responsible for synchronizing the system clock from a remote source (such as NTP client implementations) should pull in this target and order themselves before it. All services where correct time is essential should be ordered after this unit, but not pull it in. systemd automatically adds dependencies of type
After=for this target unit to all SysV init script service units with an LSB header referring to the "$time" facility.
It is fully configurable (use systemctl edit to override any aspect you want to). As mentioned above, services which provide time synchronisation (e.g. systemd-timesyncd.service) declare that they want this target, and order themselves before it; services which need time synchronisation order themselves after it.
To configure a time synchronisation service, copy the relevant parts of systemd-timesync’s configuration:
[Unit]
Before=time-sync.target
Wants=time-sync.target
answered Dec 5 at 13:34
Stephen Kitt
162k24360438
answered Dec 5 at 13:34
Stephen Kitt
162k24360438
answered Dec 5 at 13:34
Stephen Kitt
162k24360438
answered Dec 5 at 13:34
Stephen Kitt
162k24360438
162k24360438
add a comment |
add a comment |
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