Kubernetes keeps applications running while you’re asleep: This is mostly thanks to the “Readiness and Liveness Probes”. If you don’t know about them, read this cool article.

This article is about some health check patterns I have seen in the wild for applications that are not natively supporting Kubernetes-native probes. Read More →

I’ve given a talk with @yoshiat (PM, Google Kubernetes Engine) at Google Cloud Next'18 about Kubernetes Multi-Tenancy Best Practices in San Francisco last month!

You can watch the recording and look at the slides. Read More →

I recently worked on prototyping a public DNS server using CoreDNS. CoreDNS normally provides serving DNS zone data through files, however it also allows you to proxy to a backend endpoint via gRPC. I used this DNS server as the nameserver for a domain with thousands of subdomains.

This approach allows you to write a custom DNS server  in any popular language, and serve records stored in an external datastore (like a redis cache, mysql database). In this article, I’ll go over the sample backend I’ve built. Read More →

Skaffold is my top Kubernetes developer tool of the year so far. Since its accidental reveal about 3 months ago, it already got 3,700 stars on GitHub. Clearly the community is lovin’ it. Read More →

If you are using Minikube or Docker for Mac/Windows to run your Kubernetes deployments locally, I have developed a tool to restart containers automatically when their images are rebuilt: Check out freshpod on GitHub! Read More →

How would you debug a Docker container that has no shell, no tools, but a single statically-compiled executable? Creating docker images FROM scratch is a trend on the rise, but is it really taking away our debugging capabilities? Read More →

Minikube is a great tool! Almost everybody begins Kubernetes with it and continues to use it all the time. I figured out a way to use single-node GKE clusters just like Minikube: Read More →

I gave a talk on Kubernetes Network Policies at KubeCon 2017 in Austin, TX last week. It was in a lecture format: I described how the feature works and how to configure network policies with some examples. Read More →