[systemd-devel] Starting a service before any networking

[Mantas Mikulėnas]

Depends on what exactly runs dhcpcd and wpa_supplicant. Is that done by
networking.service (ifupdown)? NetworkManager? Are they standalone services?

I would generally expect Before/Wants=network-pre.target to work, but that
relies on your network services themselves being set up correctly – they
too need to order themselves After that target.

On Tue, Sep 26, 2023, 13:51 Mark Rogers <mark at more-solutions.co.uk> wrote:

> I'm sure this is trivial but I've gone round in circles without success.
>
> I have a script which reads from an SQLite database and generates various
> system configuration files - at the moment these are dhcpcd.conf and
> wpa_supplicant.conf but this might grow in future.
>
> As such the only dependency the script has is that the filesystem is up
> and running. But the script must complete before anything that the script
> manages the configuration file for.
>
> My current unit looks like this:
> [Unit]
> Before=networking.service
> After=local-fs.target
>
> [Service]
> Type=oneshot
> ExectStart=/path/to/script
>
> [Install]
> RequiredBy=network.target
>
> Where am I going wrong and what is the right way to do this?
>
> I've also tried Before=network-pre.target and Wants=network-pre.target
> without success - it was that not working that set me off trying to fix it.
> --
> Mark Rogers
>
>
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