matrix-docker-ansible-deploy/roles/matrix-nginx-proxy/templates/systemd/matrix-ssl-lets-encrypt-certificates-renew.timer.j2
Slavi Pantaleev e1690722f7 Replace cronjobs with systemd timers
Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/756

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/737

I feel like timers are somewhat more complicated and dirty (compared to
cronjobs), but they come with these benefits:

- log output goes to journald
- on newer systemd distros, you can see when the timer fired, when it
will fire, etc.
- we don't need to rely on cron (reducing our dependencies to just
systemd + Docker)

Cronjobs work well, but it's one more dependency that needs to be
installed. We were even asking people to install it manually
(in `docs/prerequisites.md`), which could have gone unnoticed.

Once in a while someone says "my SSL certificates didn't renew"
and it's likely because they forgot to install a cron daemon.

Switching to systemd timers means that installation is simpler
and more unified.
2021-01-14 23:35:50 +02:00

11 lines
224 B
Django/Jinja

[Unit]
Description=Renews Let's Encrypt SSL certificates periodically
[Timer]
Unit=matrix-ssl-lets-encrypt-certificates-renew.service
OnCalendar=Sunday *-*-* 05:00:00
RandomizedDelaySec=3h
[Install]
WantedBy=timers.target