I am using traefik as the ingress controller and need to setup a storage path that can be persisted across restarts of deployments. Where can the file acme.json be stored so all nodes can access the information? Is it possible to store in etcd as key/value pairs?
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Unfortunately, Traefik2’s community edition doesn’t have any way besides local files to store certs. Pre Traefik2 did support key-value stores (etcd, consul, etc.), which I found very hard to set up and get right.
I’m slowly working on modifying Traefik to support a shared storage solution. I have the basics working, but there are a few complex scenarios that I need to account for (multiple nodes trying to renew the same cert, etc.).
More info can be found here: https://nabeel.blog/2019/11/traefik/ https://github.com/containous/traefik/issues/5426 https://github.com/nabsul/traefik/tree/nabsul/add-cloud-storage
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