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A demo application for "Kubernetes Up and Running".

Building

Have Docker installed.

make push REGISTRY=<my-gcr-registry>

Versions

Images built will automatically have the git verison (based on tag) applied. In addition, there is an idea of a "fake version". This is used so that we can use the same basic server to demonstrate upgrade scenarios.

Right now we create 3 fake versions: 1, 2, and 3. This translates into the following container images:

gcr.io/kuar-demo/kuard-amd64:v0.2-1
gcr.io/kuar-demo/kuard-amd64:1
gcr.io/kuar-demo/kuard-amd64:v0.2-2
gcr.io/kuar-demo/kuard-amd64:2
gcr.io/kuar-demo/kuard-amd64:v0.2-3
gcr.io/kuar-demo/kuard-amd64:3

For documentation where you want to demonstrate using versions but use the latest version of this server, you can simply reference gcr.io/kuar-demo/kuard-amd64:1. You can then demonstrate an upgrade with gcr.io/kuar-demo/kuard-amd64:2.

(Another way to think about it is that :1 is essentially :latest-1)

Development

If you just want to do Go server development, you can build the client as part of a build make. It'll drop the result in to sitedata/built/.

If you want to do both Go server and React.js client dev, you need to do the following:

  1. Have Node installed
  2. In one terminal
  • cd client
  • npm install
  • npm start
  • This will start a debug node server on localhost:8081. It'll proxy all unhandled requests to localhost:8080
  1. In another terminal
  • go generate ./...
  • go run cmd/kuard/*.go --debug
  1. Open your browser to http://localhost:8081.

This should support live reload of any changes to the client. The Go server will need to be exited and restarted to see changes.

Makefiles

Go building makefiles taken from https://github.com/thockin/go-build-template with an Apache 2.0 license. Handling multiple targets taken from https://github.com/bowei/go-build-template.

These have been heavily modified.

  • Support explicit docker volume for caching vs. using host mounts (as they are really slow on macOS)
  • Building/caching node
  • Fake versions so we can play with upgrades of this server

TODO

  • Make file system browser better. Show size, permissions, etc. Might be able to do this by faking out an index.html as part of the http.FileSystem stuff.
  • Switch to React with an API to the server? This mixed template stuff sucks.
  • Find a better way to pick unique colors to show version. Perhaps just have a table based on the fakeversion.