Adam Margherio

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Latest — Jan 7, 2022

Creating PersistentVolumeClaims using Azure Files CSI and an existing file share

With the release of Kubernetes 1.21 support in AKS, the move away from in-tree storage drivers is complete. All future versions of AKS will rely on the CSI drivers as a managed component of the cluster. While there's some good public documentation (Azure Files CSI drivers and

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KubeCon 2018, Day Three Recap

Well, it's the end of the show. I'll definitely write up my thoughts when I have a better chance to consolidate them and make them coherent. Until then, I'll knock out a quick recap of my sessions and experience from day three as well

KubeCon 2018, Day Two Recap

Well, day two is now in the books and I have to say it was a lot smoother than day one. Maybe I tried to do less in my schedule today or maybe I just accidentally threw together a less chaotic schedule. I'm not sure, but I'

KubeCon 2018, Day One Recap

Day 1 of KubeCon is in the books. I'm planning on writing up a better post once the entire conference is done, but I wanted to call out a few things I really enjoyed from the day. The opening keynotes were great, but in particular the story time

A Perfect DNS Storm

tl;dr - a combination of ndots, the DNS resolver implementation in the musl library, and a flawed DNS resolution implementation in Netty caused repeated failures in DNS resolution for Kubernetes-deployed services. DNS resolution can be a tricky problem to diagnose when it happens inconsistently. Adding Kubernetes and container-based applications

Loading Multiple Kubernetes Configs

Since I've started moving towards more Kubernetes cluster operations and management in my day job, I've run into an immediate pain that is managing multiple cluster configs and easily switching from one config to another. The Kubernetes documentation for managing multiple cluster configs is helpful in

Datadog and distributed tracing in Java

The path to becoming production-ready for any service, regardless of tech stack, must check the boxes around observability and instrumentation. If you can't see into your application and understand how it's operating at load, then you can't set any standards around SLAs (service level

Moving Forward

Southwest Airlines - so long and thanks for all the fish.

Team successes and organizational support

I don't often take time to talk about the successes I've had. I love what I do and for me the experience and time spent is reward enough. Building great software that makes my users happy and lets them do what they need is absolutely rewarding.

Colons in CSS selectors

While doing some additional stylesheet work in Sass on our Customer Community, I ran into an interesting case. One of the selector paths that I needed to rely for the slide-out menu had a custom element - li:community-navigation. I've never run into a colon inside of a