Bernardo Reino via Postfix-users:
> On Sun, 23 Jul 2023, Viktor Dukhovni via Postfix-users wrote:
>
> > On 23 Jul 2023, at 4:21 pm, Charles Sprickman via Postfix-users
> > <[email protected]> wrote:
> >
> >> In the case of the dehydrated ACME client
> >> (https://github.com/dehydrated-io/dehydrated) there's an option to run
> >> a bunch of commands on successful update, including something like
> >> "postfix reload" - one could also insert an email or other command to
> >> note the update. I can't imagine other ACME clients don't offer a
> >> similar function...
> >
> > The "certbot" ACME client offers post-hooks, but they're not "reliable".
> > If the hook fails or doesn't run, it won't be retried. A robust
> > "post-hook" should have "at least once" semantics, its implementation
> > should be idempotent, ait and should be retried until it succeeds.
>
> I cannot imagine why/when the cerbot client would fail to run the post-hooks
> (in
> a sane environment).
Systems crash. What are the reliability guarantees from the certbot
client: will it run once, or will it somehow maintain state and
recover when a run was interrupted by a system crash?
Wietse
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