Category: containers

Open Source – Bitesize-controllers

The Bitesize team has been working with the nginx-controller for quite some time. Over that time we have modified, updated, coerced it to our will and its high time we open source this thing. First I want to call out the engineers that have contributed to this controller and make sure they get the recognition…


deployment pipeline options for Kubernetes

In the last several months various deployment (CI/CD) pipelines have cropped up within the Kubernetes community and our team also released one at KubeCon Seattle 2016. As a result I’ve been asked on a couple different occasions why we built our own. So here is my take. We began this endeavor sometime late 2015. You…


KubeCon Seattle Video

Finally posting this after my speaking engagement at KubeCon_Seattle in November 2016. Thanks to all that came. My hope is releasing our Deployment Pipeline will help the Kubernetes community build an ecosystem of open source CI/CD pipelines to support an awesome platform. Below the video are links to the various open source projects we have…


Kube-DNS – a little tuning

We recently upgraded Kube-dns.

Having used SkyDNS up to this point, we ran into some unexpected performance issues. In particular we were seeing pretty exaggerated response times from kube-dns when making requests it is not authoritative on (i.e. not cluster.local). Fortunately this was on a cluster not yet serving any production customers. It took several hours…


Kubernetes Init Containers

Kubernetes Init containers. Alright, I’m just going to tell the truth here. When I first started reading about them, I didn’t get it. I thought to myself, “with all the other stuff they could be doing right now at this early stage of Kubernetes, what the hell were they thinking? Seriously?” But that’s because I…


Kubernetes-authz-webhook

I’m just gonna leave this here. From our team to yours. https://github.com/pearsontechnology/bitesize-authz-webhook       All props go to Simas  


Kubernetes/PaaS: Automated Test Framework

First off, mad props go out to Ben Somogyi and Martin Devlin. They have been digging deep on this and have made great progress. I wanted to make sure I call them out and all the honors go to them. I just have the honor of telling you about it. You might be thinking right…


Kubernetes: A/B Cluster Deploys

Everything thing mentioned has been POCed and proven to work so far in testing. We run an application called Pulse in which we demoed it staying up throughout this A/B migration process. Recently the team went through an exercise on how to deploy/manage a complete cluster upgrade. There were a couple options discussed along with…


Migrate Docker Registry to GCloud Container Registry

Recently we chose to migrate our container registry to GCloud for the following reasons: We didn’t want to host it ourselves anymore. We wanted to distribute our docker images world wide for consumption in our Multi-Region scenario. We run Google Apps/Email and we could just hook into that for permissions to the registry. Its as…