jschoubben
4d6ec5b10c
object-store.json and minio.json described the same thing: same image, same provision at the same scope, same provisioner. Not two implementations a person could choose between — one module written twice. Assigning both to a node would have collided on `s3-bucket`. It exists because it was written first, to pair with photos.json for the README's worked edge, and minio.json was the fuller version of the same module written later. Nobody removed the first. The pair test keeps its point and now reads the surviving one. Checked across the rest: this was the only duplicate.
examples
Things that run, kept here because a contract is easier to read as working code than as prose.
Nothing here is part of the control plane. The control plane decides and never touches a machine (README); everything in this directory runs on a machine and touches it. These are reference implementations of contracts the control plane defines, and a real one ships with the module that ships the software it configures.
postgres-provisioner |
the last step of a credential: reads what the mesh delivered and makes PostgreSQL accept it |
Running the provisioner
--watch reconciles now and again whenever what the mesh delivered changes. That is what lets it
be a module: an ordinary long-running service the host supervises, rather than something that has
to be invoked after every declaration by a timer or a unit wired to a file.
It polls rather than watching the filesystem, because the host writes atomically — the file is replaced, so a watch on the path stops seeing anything after the first replacement. A watcher that silently stops working is worse than a poll.
Credentials are compared by digest and never by content. This runs for as long as the machine is up, and a secret does not belong in a long-lived variable when a hash answers the same question.