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How to stop all units belonging to the same target?

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7

3

I'm wondering how to stop all units that are grouped together by the same target.

My setup is as follows. I have several unit config files that read:

[Unit]

...



[Service]

...



[Install]

WantedBy=mycustom.target

When I run

# systemctl start mycustom.target

Those units that "are wanted by" mycustom.target start correctly. Now, I would also like to be able stop all units that are wanted by mycustom.target. I tried:

# systemctl stop mycustom.target

This doesn't do anything though. Is there a way to make this work without having to stop all units that are (explicitly) wanted by the same target?

systemd

share|improve this question

edited Jun 26 '15 at 16:14

Braiam

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asked Jun 26 '15 at 16:00

KrisKris

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add a comment
 | 

7

3

I'm wondering how to stop all units that are grouped together by the same target.

My setup is as follows. I have several unit config files that read:

[Unit]

...



[Service]

...



[Install]

WantedBy=mycustom.target

When I run

# systemctl start mycustom.target

Those units that "are wanted by" mycustom.target start correctly. Now, I would also like to be able stop all units that are wanted by mycustom.target. I tried:

# systemctl stop mycustom.target

This doesn't do anything though. Is there a way to make this work without having to stop all units that are (explicitly) wanted by the same target?

systemd

share|improve this question

edited Jun 26 '15 at 16:14

Braiam

24.8k2020 gold badges8282 silver badges147147 bronze badges

asked Jun 26 '15 at 16:00

KrisKris

13811 silver badge66 bronze badges

add a comment
 | 

I'm wondering how to stop all units that are grouped together by the same target.

My setup is as follows. I have several unit config files that read:

[Unit]

...



[Service]

...



[Install]

WantedBy=mycustom.target

When I run

# systemctl start mycustom.target

Those units that "are wanted by" mycustom.target start correctly. Now, I would also like to be able stop all units that are wanted by mycustom.target. I tried:

# systemctl stop mycustom.target

This doesn't do anything though. Is there a way to make this work without having to stop all units that are (explicitly) wanted by the same target?

systemd

share|improve this question

edited Jun 26 '15 at 16:14

Braiam

24.8k2020 gold badges8282 silver badges147147 bronze badges

asked Jun 26 '15 at 16:00

KrisKris

13811 silver badge66 bronze badges

[Unit]

...



[Service]

...



[Install]

WantedBy=mycustom.target

# systemctl start mycustom.target

# systemctl stop mycustom.target

share|improve this question

edited Jun 26 '15 at 16:14

Braiam

24.8k2020 gold badges8282 silver badges147147 bronze badges

asked Jun 26 '15 at 16:00

KrisKris

13811 silver badge66 bronze badges

share|improve this question

edited Jun 26 '15 at 16:14

Braiam

24.8k2020 gold badges8282 silver badges147147 bronze badges

asked Jun 26 '15 at 16:00

KrisKris

13811 silver badge66 bronze badges

edited Jun 26 '15 at 16:14

Braiam

24.8k2020 gold badges8282 silver badges147147 bronze badges

edited Jun 26 '15 at 16:14

Braiam

24.8k2020 gold badges8282 silver badges147147 bronze badges

asked Jun 26 '15 at 16:00

KrisKris

13811 silver badge66 bronze badges

asked Jun 26 '15 at 16:00

KrisKris

13811 silver badge66 bronze badges

2 Answers
2

active

oldest

votes

8

Edit: the PartOf= directive, which did not exist at the time of writing this answer, is a better solution. See another answer for details.

There are two ways: an implicit and an explicit.

First way — StopWhenUnneeded=

The first way is to use the StopWhenUnneeded= directive. If a unit has StopWhenUnneeded=yes, it will be automatically stopped when there becomes no active unit which Wants=/Requires= the unit in question. Hence:

• this will only work if these units are WantedBy= only by mycustom.target;


• you will be unable to start any of these units manually (i. e. systemctl start myunit.service will start it and immediately stop it afterwards).

Second way — a shell pipeline

The second way is to construct a simple shell pipeline, using systemctl show -p to extract the dependency list of mycustom.target.

More specifically, systemctl show UNIT will show all properties of a unit in a KEY=VALUE form, and systemctl show -p PROPERTIES UNIT will do the same, limiting the set of shown properties. So:

systemctl stop -- $(systemctl show -p Wants mycustom.target | cut -d= -f2)

share|improve this answer

edited 32 mins ago

answered Jun 29 '15 at 14:09

intelfxintelfx

3,4581616 silver badges3030 bronze badges

add a comment
 | 

22

Use the PartOf= directive.

Configures dependencies similar to Requires=, but limited to stopping and restarting of units. When systemd stops or restarts the units listed here, the action is propagated to this unit. Note that this is a one-way dependency — changes to this unit do not affect the listed units.

PartOf=mycustom.target

share|improve this answer

answered Mar 29 '16 at 14:41

betonimigbetonimig

32022 silver badges44 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Should I combine it with StopWhenUnneeded or is it implied?
  
  – PSSGCSim
  Nov 1 '17 at 6:56
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It seems that StopWhenUnneeded is not necessary when using PartOf. @PSSGCSim
  
  – Gary van der Merwe
  Oct 2 '18 at 13:26
  

  
  
  
  

add a comment
 | 

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8

Edit: the PartOf= directive, which did not exist at the time of writing this answer, is a better solution. See another answer for details.

There are two ways: an implicit and an explicit.

First way — StopWhenUnneeded=

The first way is to use the StopWhenUnneeded= directive. If a unit has StopWhenUnneeded=yes, it will be automatically stopped when there becomes no active unit which Wants=/Requires= the unit in question. Hence:

• this will only work if these units are WantedBy= only by mycustom.target;


• you will be unable to start any of these units manually (i. e. systemctl start myunit.service will start it and immediately stop it afterwards).

Second way — a shell pipeline

The second way is to construct a simple shell pipeline, using systemctl show -p to extract the dependency list of mycustom.target.

More specifically, systemctl show UNIT will show all properties of a unit in a KEY=VALUE form, and systemctl show -p PROPERTIES UNIT will do the same, limiting the set of shown properties. So:

systemctl stop -- $(systemctl show -p Wants mycustom.target | cut -d= -f2)

share|improve this answer

edited 32 mins ago

answered Jun 29 '15 at 14:09

intelfxintelfx

3,4581616 silver badges3030 bronze badges

add a comment
 | 

8

Edit: the PartOf= directive, which did not exist at the time of writing this answer, is a better solution. See another answer for details.

There are two ways: an implicit and an explicit.

First way — StopWhenUnneeded=

The first way is to use the StopWhenUnneeded= directive. If a unit has StopWhenUnneeded=yes, it will be automatically stopped when there becomes no active unit which Wants=/Requires= the unit in question. Hence:

• this will only work if these units are WantedBy= only by mycustom.target;


• you will be unable to start any of these units manually (i. e. systemctl start myunit.service will start it and immediately stop it afterwards).

Second way — a shell pipeline

The second way is to construct a simple shell pipeline, using systemctl show -p to extract the dependency list of mycustom.target.

More specifically, systemctl show UNIT will show all properties of a unit in a KEY=VALUE form, and systemctl show -p PROPERTIES UNIT will do the same, limiting the set of shown properties. So:

systemctl stop -- $(systemctl show -p Wants mycustom.target | cut -d= -f2)

share|improve this answer

edited 32 mins ago

answered Jun 29 '15 at 14:09

intelfxintelfx

3,4581616 silver badges3030 bronze badges

add a comment
 | 

Edit: the PartOf= directive, which did not exist at the time of writing this answer, is a better solution. See another answer for details.

There are two ways: an implicit and an explicit.

First way — StopWhenUnneeded=

The first way is to use the StopWhenUnneeded= directive. If a unit has StopWhenUnneeded=yes, it will be automatically stopped when there becomes no active unit which Wants=/Requires= the unit in question. Hence:

• this will only work if these units are WantedBy= only by mycustom.target;


• you will be unable to start any of these units manually (i. e. systemctl start myunit.service will start it and immediately stop it afterwards).

Second way — a shell pipeline

The second way is to construct a simple shell pipeline, using systemctl show -p to extract the dependency list of mycustom.target.

More specifically, systemctl show UNIT will show all properties of a unit in a KEY=VALUE form, and systemctl show -p PROPERTIES UNIT will do the same, limiting the set of shown properties. So:

systemctl stop -- $(systemctl show -p Wants mycustom.target | cut -d= -f2)

share|improve this answer

edited 32 mins ago

answered Jun 29 '15 at 14:09

intelfxintelfx

3,4581616 silver badges3030 bronze badges

systemctl stop -- $(systemctl show -p Wants mycustom.target | cut -d= -f2)

share|improve this answer

edited 32 mins ago

answered Jun 29 '15 at 14:09

intelfxintelfx

3,4581616 silver badges3030 bronze badges

answered Jun 29 '15 at 14:09

intelfxintelfx

3,4581616 silver badges3030 bronze badges

answered Jun 29 '15 at 14:09

intelfxintelfx

3,4581616 silver badges3030 bronze badges

22

Use the PartOf= directive.

Configures dependencies similar to Requires=, but limited to stopping and restarting of units. When systemd stops or restarts the units listed here, the action is propagated to this unit. Note that this is a one-way dependency — changes to this unit do not affect the listed units.

PartOf=mycustom.target

share|improve this answer

answered Mar 29 '16 at 14:41

betonimigbetonimig

32022 silver badges44 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Should I combine it with StopWhenUnneeded or is it implied?
  
  – PSSGCSim
  Nov 1 '17 at 6:56
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It seems that StopWhenUnneeded is not necessary when using PartOf. @PSSGCSim
  
  – Gary van der Merwe
  Oct 2 '18 at 13:26
  

  
  
  
  

add a comment
 | 

22

Use the PartOf= directive.

Configures dependencies similar to Requires=, but limited to stopping and restarting of units. When systemd stops or restarts the units listed here, the action is propagated to this unit. Note that this is a one-way dependency — changes to this unit do not affect the listed units.

PartOf=mycustom.target

share|improve this answer

answered Mar 29 '16 at 14:41

betonimigbetonimig

32022 silver badges44 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Should I combine it with StopWhenUnneeded or is it implied?
  
  – PSSGCSim
  Nov 1 '17 at 6:56
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  It seems that StopWhenUnneeded is not necessary when using PartOf. @PSSGCSim
  
  – Gary van der Merwe
  Oct 2 '18 at 13:26
  

  
  
  
  

add a comment
 | 

Use the PartOf= directive.

Configures dependencies similar to Requires=, but limited to stopping and restarting of units. When systemd stops or restarts the units listed here, the action is propagated to this unit. Note that this is a one-way dependency — changes to this unit do not affect the listed units.

PartOf=mycustom.target

share|improve this answer

answered Mar 29 '16 at 14:41

betonimigbetonimig

32022 silver badges44 bronze badges

share|improve this answer

answered Mar 29 '16 at 14:41

betonimigbetonimig

32022 silver badges44 bronze badges

answered Mar 29 '16 at 14:41

betonimigbetonimig

32022 silver badges44 bronze badges

answered Mar 29 '16 at 14:41

betonimigbetonimig

32022 silver badges44 bronze badges