linux - 如果重新启动其依赖服务，如何重新启动服务

Question

一个服务(例如 bar.service)依赖于另一个服务(例如 foo.service)，如下所示

酒吧的服务文件:

[Unit]
After=foo.service
Requires=foo.service
...

如果 foo.service 重新启动(手动或由于错误)，bar.service 如何自动重新启动？

Answer 1

您可以使用 PartOf。

[Unit]
After=foo.service
Requires=foo.service
PartOf=foo.service

来自 systemd.unit 手册页:

PartOf=

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.