Example: Bazel
The best indicator of a healthy development workflow is a short feedback loop.
Kubernetes is a huge wrench in the works.
Let’s fix this.
In this example, we’re going to look at a project that uses Bazel to build images and Kubernetes resources. We’ll show you how to use Tilt to speed up iterative development. Our simple server uses Go templates to serve HTML.
We’ll use Tilt to:
- Run the server on Kubernetes
- Measure the time from a code change to a new process
- Optimize that time for faster feedback
All the code is in this repo:
To skip straight to the fully optimized setup, go to this Tiltfile:
For now, we’ve posted the code so that teams can copy it and adapt it to their own Bazel builds.
We’re workshopping this approach with partner teams and tweaking it to make sure it works well. We’ll add a longer write-up to the doc on how it works once we’re happy with it.
Stay tuned!
Further Reading
CI
Once you’re done configuring your project, set up a CI test to ensure
your setup doesn’t break! In the example repo, CircleCI uses
ctlptl to create a single-use Kubernetes
cluster. The test script invokes tilt ci. The tilt ci command deploys all
services in a Tiltfile and exits successfully if they’re healthy.