On Thu, May 9, 2024 at 3:14 PM Tom Horsley <horsley1...@gmail.com> wrote:

> On Thu, 9 May 2024 19:15:20 +0100
> Barry Scott wrote:
>
> >        All options are configured in the [Journal] section:
>
> Yep, but it is concatenating all the different bits and pieces
> it picks up from the journald.conf.d directory, so is the [Journal]
> in the default file enough to imply [Journal] for all the pieces
> it picks up from the directory? I mean, what if [Journal] means
> "Forget everything, we're starting journal options now"? The last
> thing you'd want to do is put in a [Journal] line in that case and
> forget all the previous settings :-).
>
> [Train of thought like this is what happens when a computer programmer
> tries to read an ambiguous manual].
>

When it comes to configuration using the .d/ directories, I believe it is a
"sticky" scheme. The first time the option is set, it becomes sticky and it
is not overridden later. That's why applications read .d/ configuration
files first (and in a deterministic order, like 10-*.conf before 50-*.conf
files), and then fallback to the package's or maintainer's configuration
options for missing options.

Jeff
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