Posso reiniciar o serviço dependente com o systemd?

Question

Eu criei dois serviços, um para um aplicativo rails e outro para o seu processo delayed_job, eu quero reiniciar o serviço delayed_job toda vez que o serviço rails for reiniciado, posso fazer isso com o systemd?

    

Answer 1

Requires= no arquivo delayed_job systemd faz o trabalho:

[Unit]
Requires=rails.service

( man systemd.unit )

    

Answer 2

Você deve considerar o uso de BindsTo over Requires , de man systemd.unit

BindsTo=
  Configures requirement dependencies, very similar in style to Requires=, however in addition to this behavior, it also
  declares that this unit is stopped when any of the units listed suddenly disappears. Units can suddenly, unexpectedly
  disappear if a service terminates on its own choice, a device is unplugged or a mount point unmounted without
  involvement of systemd.