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systemd: myservice.service vs myservice.target
Is there a way to control two instantiated systemd services as a single unit?Systemd: start a unit after another unit REALLY startsFind the location of a systemd serviceSystemd does not restart service, although Restart=alwaysSoft dependency in systemdSystemd timer not starting its service unitIn systemd, what's the difference between After= and Requires=?systemd active (exited) status of mrd6Node.JS systemd service won't restartsystemd unit doesn't start on boot on Debian 9, but starts fine when started manually after boot and on boot on Debian 8
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In a systemd service definition file, what is the difference between
[Unit]
Description=My service...
After=zookeeper.service
and
[Unit]
Description=My service...
After=zookeeper.target
zookeeper is another service defined in another service file, but what is the significance of the extension .service vs .target. Is there a difference?
systemd
asked Apr 18 '18 at 18:20
clayclay
1085
add a comment |
In a systemd service definition file, what is the difference between
[Unit]
Description=My service...
After=zookeeper.service
and
[Unit]
Description=My service...
After=zookeeper.target
zookeeper is another service defined in another service file, but what is the significance of the extension .service vs .target. Is there a difference?
systemd
asked Apr 18 '18 at 18:20
clayclay
1085
add a comment |
In a systemd service definition file, what is the difference between
[Unit]
Description=My service...
After=zookeeper.service
and
[Unit]
Description=My service...
After=zookeeper.target
zookeeper is another service defined in another service file, but what is the significance of the extension .service vs .target. Is there a difference?
systemd
asked Apr 18 '18 at 18:20
clayclay
1085
In a systemd service definition file, what is the difference between
[Unit]
Description=My service...
After=zookeeper.service
and
[Unit]
Description=My service...
After=zookeeper.target
zookeeper is another service defined in another service file, but what is the significance of the extension .service vs .target. Is there a difference?
systemd
systemd
asked Apr 18 '18 at 18:20
clayclay
1085
asked Apr 18 '18 at 18:20
clayclay
1085
asked Apr 18 '18 at 18:20
clayclay
1085
asked Apr 18 '18 at 18:20
clayclay
1085
asked Apr 18 '18 at 18:20
clayclay
1085
1085
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
Yes. See man systemd.service and man systemd.target for the documentation for each type of systemd unit.
On your systemd, you can find the files and review what systemd directives they contain, assuming both exist:
locate zookeeper.service
locate zookeeper.target
answered Apr 18 '18 at 18:28
Mark StosbergMark Stosberg
2,8211324
add a comment |
A service:
A unit configuration file whose name ends in .service encodes
information about a process controlled and supervised by systemd.
A target:
A unit configuration file whose name ends in ".target" encodes
information about a target unit of systemd, which is used for grouping
units and as well-known synchronization points during start-up.
These both refer to unit configuration files, which are:
A unit configuration file encodes information about a service, a
socket, a device, a mount point, an automount point, a swap file or
partition, a start-up target, a watched file system path, a timer
controlled and supervised by systemd(1), a resource management slice
or a group of externally created processes.
Reference: man pages for systemd.service, systemd.target, and systemd.unit, respectively.
Also, with respect to the configuration files themselves; services need:
Service files must include a "[Service]" section, which carries
information about the service and the process it supervises.
No such requirement exists for target configuration files. In fact, targets have no options specific to targets; items are configured in generic [Unit] and [Install] sections.
answered Apr 30 at 20:32
fbicknelfbicknel
1214
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Yes. See man systemd.service and man systemd.target for the documentation for each type of systemd unit.
On your systemd, you can find the files and review what systemd directives they contain, assuming both exist:
locate zookeeper.service
locate zookeeper.target
answered Apr 18 '18 at 18:28
Mark StosbergMark Stosberg
2,8211324
add a comment |
Yes. See man systemd.service and man systemd.target for the documentation for each type of systemd unit.
On your systemd, you can find the files and review what systemd directives they contain, assuming both exist:
locate zookeeper.service
locate zookeeper.target
answered Apr 18 '18 at 18:28
Mark StosbergMark Stosberg
2,8211324
add a comment |
Yes. See man systemd.service and man systemd.target for the documentation for each type of systemd unit.
On your systemd, you can find the files and review what systemd directives they contain, assuming both exist:
locate zookeeper.service
locate zookeeper.target
answered Apr 18 '18 at 18:28
Mark StosbergMark Stosberg
2,8211324
Yes. See man systemd.service and man systemd.target for the documentation for each type of systemd unit.
On your systemd, you can find the files and review what systemd directives they contain, assuming both exist:
locate zookeeper.service
locate zookeeper.target
answered Apr 18 '18 at 18:28
Mark StosbergMark Stosberg
2,8211324
answered Apr 18 '18 at 18:28
Mark StosbergMark Stosberg
2,8211324
answered Apr 18 '18 at 18:28
Mark StosbergMark Stosberg
2,8211324
answered Apr 18 '18 at 18:28
Mark StosbergMark Stosberg
2,8211324
2,8211324
add a comment |
add a comment |
A service:
A unit configuration file whose name ends in .service encodes
information about a process controlled and supervised by systemd.
A target:
A unit configuration file whose name ends in ".target" encodes
information about a target unit of systemd, which is used for grouping
units and as well-known synchronization points during start-up.
These both refer to unit configuration files, which are:
A unit configuration file encodes information about a service, a
socket, a device, a mount point, an automount point, a swap file or
partition, a start-up target, a watched file system path, a timer
controlled and supervised by systemd(1), a resource management slice
or a group of externally created processes.
Reference: man pages for systemd.service, systemd.target, and systemd.unit, respectively.
Also, with respect to the configuration files themselves; services need:
Service files must include a "[Service]" section, which carries
information about the service and the process it supervises.
No such requirement exists for target configuration files. In fact, targets have no options specific to targets; items are configured in generic [Unit] and [Install] sections.
answered Apr 30 at 20:32
fbicknelfbicknel
1214
add a comment |
A service:
A unit configuration file whose name ends in .service encodes
information about a process controlled and supervised by systemd.
A target:
A unit configuration file whose name ends in ".target" encodes
information about a target unit of systemd, which is used for grouping
units and as well-known synchronization points during start-up.
These both refer to unit configuration files, which are:
A unit configuration file encodes information about a service, a
socket, a device, a mount point, an automount point, a swap file or
partition, a start-up target, a watched file system path, a timer
controlled and supervised by systemd(1), a resource management slice
or a group of externally created processes.
Reference: man pages for systemd.service, systemd.target, and systemd.unit, respectively.
Also, with respect to the configuration files themselves; services need:
Service files must include a "[Service]" section, which carries
information about the service and the process it supervises.
No such requirement exists for target configuration files. In fact, targets have no options specific to targets; items are configured in generic [Unit] and [Install] sections.
answered Apr 30 at 20:32
fbicknelfbicknel
1214
add a comment |
A service:
A unit configuration file whose name ends in .service encodes
information about a process controlled and supervised by systemd.
A target:
A unit configuration file whose name ends in ".target" encodes
information about a target unit of systemd, which is used for grouping
units and as well-known synchronization points during start-up.
These both refer to unit configuration files, which are:
A unit configuration file encodes information about a service, a
socket, a device, a mount point, an automount point, a swap file or
partition, a start-up target, a watched file system path, a timer
controlled and supervised by systemd(1), a resource management slice
or a group of externally created processes.
Reference: man pages for systemd.service, systemd.target, and systemd.unit, respectively.
Also, with respect to the configuration files themselves; services need:
Service files must include a "[Service]" section, which carries
information about the service and the process it supervises.
No such requirement exists for target configuration files. In fact, targets have no options specific to targets; items are configured in generic [Unit] and [Install] sections.
answered Apr 30 at 20:32
fbicknelfbicknel
1214
A service:
A unit configuration file whose name ends in .service encodes
information about a process controlled and supervised by systemd.
A target:
A unit configuration file whose name ends in ".target" encodes
information about a target unit of systemd, which is used for grouping
units and as well-known synchronization points during start-up.
These both refer to unit configuration files, which are:
A unit configuration file encodes information about a service, a
socket, a device, a mount point, an automount point, a swap file or
partition, a start-up target, a watched file system path, a timer
controlled and supervised by systemd(1), a resource management slice
or a group of externally created processes.
Reference: man pages for systemd.service, systemd.target, and systemd.unit, respectively.
Also, with respect to the configuration files themselves; services need:
Service files must include a "[Service]" section, which carries
information about the service and the process it supervises.
No such requirement exists for target configuration files. In fact, targets have no options specific to targets; items are configured in generic [Unit] and [Install] sections.
answered Apr 30 at 20:32
fbicknelfbicknel
1214
edited Apr 30 at 20:38
answered Apr 30 at 20:32
fbicknelfbicknel
1214
answered Apr 30 at 20:32
fbicknelfbicknel
1214
answered Apr 30 at 20:32
fbicknelfbicknel
1214
1214
add a comment |
add a comment |
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