[FRONTEND][LE] Pre-generate SSL certificates for "Host:" rules

[Horgix]

Current behavior

Certificates are generated by Let's Encrypt :

• At first access thanks to onDemand = true directive
• At configuration loading thanks to [[acme.domains]] section

Feature Request

It would be nice if Traefik was able to automatically generate SSL certificates as soon has it gets to know a new frontend.
It would be impossible for most of rules like Headers or HostRegexp, but would definitely by appreciated for simple Host rules.

Slack discussion about it

is Traefik capable of generating certificates for every known frontend at startup ? Would be awesome :)
That's impossible for traefik to download automatically all certs when adding frontends because you can add regex rules.
yeah that makes sense, didn't think about it since I'm not using this feature :)
But, in the futur, we will download certs automatically if the rule type is Host :
Nice, is there any feature request on Github about that or should I submit it ?
you can submit it :)

[Horgix]

Thanks @emilevauge :D
Any idea in which release it will be ?