[systemd-devel] Conditionally reload a service from another service

[Barry]

> On 31 Jul 2023, at 21:23, Ian Pilcher <arequipeno at gmail.com> wrote:
> 
> I have created service (along with an associated timer) that checks the
> remaining life of a TLS certificate and retrieves an updated certificate
> from Let's Encrypt if the remaining life is too short.

Certbot already knows how to do this.
It has a service and timer that renews the all certs and restarts httpd.
You could see how certbot solves the problem or just use certbot if it suitable.

Barry