Stop systemd units in different order than start Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern) Come Celebrate our 10 Year Anniversary!systemd: stop all uninstalled unitsHow to start and stop a systemd unit with another?systemd doesn't honour chkconfig KILL orderHow to stop systemd services in specific orderSpecify systemd dependency on any one of multiple units?Start and stop one systemd unit with anotherStart vsftpd instances by systemd targetSystemd units: [Install] vs. command: start (cloud-config)systemd state changes to “deactivating (stop-sigterm)” for unit with type=forkingsystemd: setting dependencies between templated timer units?
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Stop systemd units in different order than start
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 23:30 UTC (7:30pm US/Eastern)
Come Celebrate our 10 Year Anniversary!systemd: stop all uninstalled unitsHow to start and stop a systemd unit with another?systemd doesn't honour chkconfig KILL orderHow to stop systemd services in specific orderSpecify systemd dependency on any one of multiple units?Start and stop one systemd unit with anotherStart vsftpd instances by systemd targetSystemd units: [Install] vs. command: start (cloud-config)systemd state changes to “deactivating (stop-sigterm)” for unit with type=forkingsystemd: setting dependencies between templated timer units?
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How can I define two systemd units so their Stop order is different than their Start order ?
For performance issue, I have both units A and B start simultaneously (they both start after a systemd socket), but unit A cannot stop before unit B
systemd
asked Apr 14 at 10:55
aguadoeaguadoe
1031
New contributor
aguadoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
How can I define two systemd units so their Stop order is different than their Start order ?
For performance issue, I have both units A and B start simultaneously (they both start after a systemd socket), but unit A cannot stop before unit B
systemd
asked Apr 14 at 10:55
aguadoeaguadoe
1031
New contributor
aguadoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Potentially you can useBindsToorRequiresto achieve this, but from your question it is unclear how exactly are you stopping the services. What exactly triggers the stopping of the services?
– Ektich
Apr 15 at 10:54
They are both stopped when shuting the system down, so system sends a SIGTERM to both units at the same time
– aguadoe
Apr 15 at 13:40
add a comment |
How can I define two systemd units so their Stop order is different than their Start order ?
For performance issue, I have both units A and B start simultaneously (they both start after a systemd socket), but unit A cannot stop before unit B
systemd
asked Apr 14 at 10:55
aguadoeaguadoe
1031
New contributor
aguadoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
How can I define two systemd units so their Stop order is different than their Start order ?
For performance issue, I have both units A and B start simultaneously (they both start after a systemd socket), but unit A cannot stop before unit B
systemd
systemd
asked Apr 14 at 10:55
aguadoeaguadoe
1031
New contributor
aguadoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Apr 14 at 10:55
aguadoeaguadoe
1031
New contributor
aguadoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Apr 14 at 10:55
aguadoeaguadoe
1031
New contributor
aguadoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Apr 14 at 10:55
aguadoeaguadoe
1031
asked Apr 14 at 10:55
aguadoeaguadoe
1031
1031
New contributor
aguadoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
aguadoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
aguadoe is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Potentially you can useBindsToorRequiresto achieve this, but from your question it is unclear how exactly are you stopping the services. What exactly triggers the stopping of the services?
– Ektich
Apr 15 at 10:54
They are both stopped when shuting the system down, so system sends a SIGTERM to both units at the same time
– aguadoe
Apr 15 at 13:40
add a comment |
Potentially you can useBindsToorRequiresto achieve this, but from your question it is unclear how exactly are you stopping the services. What exactly triggers the stopping of the services?
– Ektich
Apr 15 at 10:54
They are both stopped when shuting the system down, so system sends a SIGTERM to both units at the same time
– aguadoe
Apr 15 at 13:40
Potentially you can use
BindsTo or Requires to achieve this, but from your question it is unclear how exactly are you stopping the services. What exactly triggers the stopping of the services?– Ektich
Apr 15 at 10:54
Potentially you can use
BindsTo or Requires to achieve this, but from your question it is unclear how exactly are you stopping the services. What exactly triggers the stopping of the services?– Ektich
Apr 15 at 10:54
They are both stopped when shuting the system down, so system sends a SIGTERM to both units at the same time
– aguadoe
Apr 15 at 13:40
They are both stopped when shuting the system down, so system sends a SIGTERM to both units at the same time
– aguadoe
Apr 15 at 13:40
add a comment |
1 Answer
1
active
oldest
votes
Nope. If B contains After=A, A starts first, and B stops first.
What the service manager waits for when starting A depends on the Type. Reference possible types in the systemd.service manual. In particular, simple doesn't even wait for the exec(), but forking waits for the parent process to exit.
If performance is what you are after, naturally there are multiple competing tools for timing the start of units, systemd-analyze and bootchart. Determine the maximum startup time you can tolerate, then measure how long it actually takes.
For further improvements, profile this thing in detail and look at its code.
answered Apr 14 at 12:15
John MahowaldJohn Mahowald
9,0111713
the units can be linked withRequires=orBindsTo=. according to documentation, it does not fix the order in which services are started, but influences how they are stopped. (as in, stopping of one of them triggers the stopping of the other)
– Ektich
Apr 15 at 10:56
add a comment |
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Nope. If B contains After=A, A starts first, and B stops first.
What the service manager waits for when starting A depends on the Type. Reference possible types in the systemd.service manual. In particular, simple doesn't even wait for the exec(), but forking waits for the parent process to exit.
If performance is what you are after, naturally there are multiple competing tools for timing the start of units, systemd-analyze and bootchart. Determine the maximum startup time you can tolerate, then measure how long it actually takes.
For further improvements, profile this thing in detail and look at its code.
answered Apr 14 at 12:15
John MahowaldJohn Mahowald
9,0111713
the units can be linked withRequires=orBindsTo=. according to documentation, it does not fix the order in which services are started, but influences how they are stopped. (as in, stopping of one of them triggers the stopping of the other)
– Ektich
Apr 15 at 10:56
add a comment |
Nope. If B contains After=A, A starts first, and B stops first.
What the service manager waits for when starting A depends on the Type. Reference possible types in the systemd.service manual. In particular, simple doesn't even wait for the exec(), but forking waits for the parent process to exit.
If performance is what you are after, naturally there are multiple competing tools for timing the start of units, systemd-analyze and bootchart. Determine the maximum startup time you can tolerate, then measure how long it actually takes.
For further improvements, profile this thing in detail and look at its code.
answered Apr 14 at 12:15
John MahowaldJohn Mahowald
9,0111713
the units can be linked withRequires=orBindsTo=. according to documentation, it does not fix the order in which services are started, but influences how they are stopped. (as in, stopping of one of them triggers the stopping of the other)
– Ektich
Apr 15 at 10:56
add a comment |
Nope. If B contains After=A, A starts first, and B stops first.
What the service manager waits for when starting A depends on the Type. Reference possible types in the systemd.service manual. In particular, simple doesn't even wait for the exec(), but forking waits for the parent process to exit.
If performance is what you are after, naturally there are multiple competing tools for timing the start of units, systemd-analyze and bootchart. Determine the maximum startup time you can tolerate, then measure how long it actually takes.
For further improvements, profile this thing in detail and look at its code.
answered Apr 14 at 12:15
John MahowaldJohn Mahowald
9,0111713
Nope. If B contains After=A, A starts first, and B stops first.
What the service manager waits for when starting A depends on the Type. Reference possible types in the systemd.service manual. In particular, simple doesn't even wait for the exec(), but forking waits for the parent process to exit.
If performance is what you are after, naturally there are multiple competing tools for timing the start of units, systemd-analyze and bootchart. Determine the maximum startup time you can tolerate, then measure how long it actually takes.
For further improvements, profile this thing in detail and look at its code.
answered Apr 14 at 12:15
John MahowaldJohn Mahowald
9,0111713
answered Apr 14 at 12:15
John MahowaldJohn Mahowald
9,0111713
answered Apr 14 at 12:15
John MahowaldJohn Mahowald
9,0111713
answered Apr 14 at 12:15
John MahowaldJohn Mahowald
9,0111713
9,0111713
the units can be linked withRequires=orBindsTo=. according to documentation, it does not fix the order in which services are started, but influences how they are stopped. (as in, stopping of one of them triggers the stopping of the other)
– Ektich
Apr 15 at 10:56
add a comment |
the units can be linked withRequires=orBindsTo=. according to documentation, it does not fix the order in which services are started, but influences how they are stopped. (as in, stopping of one of them triggers the stopping of the other)
– Ektich
Apr 15 at 10:56
the units can be linked with
Requires= or BindsTo=. according to documentation, it does not fix the order in which services are started, but influences how they are stopped. (as in, stopping of one of them triggers the stopping of the other)– Ektich
Apr 15 at 10:56
the units can be linked with
Requires= or BindsTo=. according to documentation, it does not fix the order in which services are started, but influences how they are stopped. (as in, stopping of one of them triggers the stopping of the other)– Ektich
Apr 15 at 10:56
add a comment |
aguadoe is a new contributor. Be nice, and check out our Code of Conduct.
aguadoe is a new contributor. Be nice, and check out our Code of Conduct.
aguadoe is a new contributor. Be nice, and check out our Code of Conduct.
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Potentially you can use
BindsToorRequiresto achieve this, but from your question it is unclear how exactly are you stopping the services. What exactly triggers the stopping of the services?– Ektich
Apr 15 at 10:54
They are both stopped when shuting the system down, so system sends a SIGTERM to both units at the same time
– aguadoe
Apr 15 at 13:40