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Comment by mariusor | Hacker News Reader

But Systemd has IPC and a stable interface for clients, it's "the D-Bus interface of systemd"[1]. I would think that exposing that over http would be a little reckless, but I'm sure one can create a proxy that can do it in a "secure"-ish way.

[1] https://www.freedesktop.org/software/systemd/man/org.freedes...

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There is this:

    systemctl --host=whatever.abc status apache2

It uses ssh and UNIX domain socket forwarding behind the scenes. There's a writeup of how to do this with minimal privs here:

https://sleeplessbeastie.eu/2021/03/03/how-to-manage-systemd...

If you want to speak the protocol without the systemctl program then you can do the same trick. Use an SSH library, connect to the dbus socket and connect to systemd. You do need a dbus library though. They are less common than HTTP stacks.

TIL. I had no idea the systemd team implemented something like this already, it's great info, thank you. :)

>They are less common than HTTP stacks.

libsystemd includes a d-bus library for exactly this reason.

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