Comment by gchamonlive
1 hour ago
> That isn't something I'd want to happen, it sounds like it creates a potential queue of scripts that will flood the system on start, if it works the way you described.
This isn't what happens. If you leave it offline for days it'll only trigger the service only a single time.
I interpreted it more like "I have these 500 different cronjobs all spread out across $unit_of_time. If the system is down for longer than $unit_of_time and then comes back, does all 500 jobs start running instantly (since they missed their previous deadline)?"
Just to be clear, this isn't default systemd timer behaviour, you need to opt in by setting Persistent=true. If you have hundreds of jobs like this you need a proper queue and neither cronie nor systemd is the right tool because at that scale you'd surely need better observability
If you have 100 different jobs that were supposed to run over the past week, but didn't because offline, when you restart, they they all flood the system on start.
100 jobs all running at different times throughout the week is a very different load than them all falling back and running at the same time on system boot.
I don't, it's a single backup service.