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Re:Google Kubernetes Engine is introducing a cluster managem... by lvh on Wednesday March 04, 2020 @01:17PM (#22486215)
It's kind of ridiculous internal load balancers can't get automatic certs. We've had to do a stupid dance just to get certs via the LE DNS challenge out of band, and then regularly install them on internal LBs.
Re:Google Kubernetes Engine is introducing a cluster managem... by tmpz22 on Wednesday March 04, 2020 @01:18PM (#22486226)
Same! I still manually provision some certificates just because LEGO/etc. just don't work with GCP + Google Cloud Load balancer! And the docs for the entire subject are useless..
Re:Google Kubernetes Engine is introducing a cluster managem... by rolleiflex on Wednesday March 04, 2020 @01:55PM (#22486660)
We paid for long-lasting wildcard certs because of that. Which Apple killed a few days ago. It’s going to be fun when they are close to expiry.
Re:Google Kubernetes Engine is introducing a cluster managem... by hitpointdrew on Wednesday March 04, 2020 @08:02PM (#22489929)
Maybe I don't understand your problem, but can't you just use Traefik (https://docs.traefik.io/user-guides/crd-acme/). It will get certs from letsencrypt for you.
Re:Google Kubernetes Engine is introducing a cluster managem... by jrockway on Wednesday March 04, 2020 @08:32PM (#22490099)
TCP coming into your cluster means that you practically have to go through kube-proxy (because the load balancer and the Kubernetes scheduler aren't perfectly synchronized) and that the load-balancer can't balance per-request, only per-connection. If the load balancer terminates TLS, then it can just watch cluster endpoints and automatically route to the right node without any extra hop through kube-proxy, and it can also split large individual requests out of HTTP/2 and GRPC streams.

I'm guessing 99% of workloads won't notice either of these issues, but it is an actual issue.

Re:Google Kubernetes Engine is introducing a cluster managem... by lvh on Thursday March 05, 2020 @09:16AM (#22493637)
Key word: "internal" -- these aren't on the internet, Traefik does ALPN, which means the LB itself has to be on the Internet. (Or something else that leaks the cert to the LB, but that doesn't sound any less complicated than using the DNS challenge.)
Re:Google Kubernetes Engine is introducing a cluster managem... by zomglings on Wednesday March 04, 2020 @04:18PM (#22488251)
Does cert-manager not for your needs?

https://github.com/jetstack/cert-manager

Re:Google Kubernetes Engine is introducing a cluster managem... by tmpz22 on Wednesday March 04, 2020 @06:00PM (#22489097)
> As this project is pre-1.0, we do not currently offer strong guarantees around our API stability.

Notably, we may choose to make breaking changes to our API specification (i.e. the Issuer, ClusterIssuer and Certificate resources) in new minor releases.

Re:Google Kubernetes Engine is introducing a cluster managem... by yebyen on Wednesday March 04, 2020 @06:26PM (#22489266)
In practice, the cert-manager team has made breaking changes in probably close to 1/3 of minor releases (which is really fine pre 1.0, IMHO), there has been comprehensive guidance to lead users or cluster admins through upgrading, that walks through exactly what steps are needed, and followed well does not interrupt your cluster's service in any way.

It's not dark magic, it might make building off of it in the form of integrations prohibitive, but they have done a great job making sure users can upgrade one release to the next.

It is a little bit of a treadmill, but it certainly beats manually renewing certificates!