NOTE cert-manager is a better solution to what follows. I’ve a need to deploy a Vultr Kubernetes Engine (VKE) cluster on a daily basis (create and delete within a few hours) and expose (securely|TLS) a gRPC service. I have an existing solution Automatic Certs w/ Golang gRPC service on Compute Engine that combines a gRPC Healthchecking and an ACME service and decided to reuse this. In order for it work, we need:

I’ve begun exploring Vultr after the company announced a managed Kubernetes offering Vultr Kubernetes Engine (VKE). In my brief experience, it’s a decent platform and its CLI vultr-cli is mostly (!) good. The CLI has a limitation in that command output is text formatted and this makes it challenging to parse the output when scripting. NOTE The Vultr developers have a branch rewrite that includes a solution to this problem.

I was introduced to HackMD while working on an open-source project. It’s a collaborative editing tool for Markdown documents and there’s an API I wanted to be able to programmatically edit one of my documents with a daily update. The API is easy-to-use and my only challenge was futzing with escape characters in bash strips representing the document Markdown content. You’ll need an account with HackMD and an to Create API Token that I’ll refer to as TOKEN.