Open Credo

Showing all posts by Will May

Hacking Kubernetes on AWS (EKS) from a Mac

October 29, 2020 | Cloud, Kubernetes, Open Source

Hacking Kubernetes on AWS (EKS) from a Mac

While working with a client recently, we experienced some issues when attempting to make use of NLB external load balancer services when using AWS EKS. I wanted to investigate whether these issues had been fixed in the upstream GitHub Kubernetes repository, or if I could fix it myself, contributing back to the community in the process.

The particular Kubernetes code in question is in the part of the repository responsible for communicating with the AWS EC2 APIs. This lies entwined with the kube-controller-manager which runs on the masters. This meant I wasn’t able to use EKS directly to test the changes as the EKS master nodes are not able to be controlled or upgraded by users. Instead I needed to run the masters myself and essentially simulate EKS. As long as these simulated masters resided somewhere in AWS, I would be able to accurately test the AWS integration. I thus needed to build, package, deploy & test Kubernetes for AWS from the Kubernetes Git repository – this blog records the travails and steps of what is required to do this.

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HA Prometheus – The Thanos Evolution

February 5, 2019 | Cloud Native, DevOps, Kubernetes, Microservices, Open Source

HA Prometheus – The Thanos Evolution

While Prometheus has fast become the standard for monitoring in the cloud, making Prometheus highly available can be tricky. This blog post will walk you through how to do this using the open source tool Thanos.

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Self-testing infrastructure-as-code

May 31, 2018 | DevOps

Self-testing infrastructure-as-code

As traditional operations has embraced the concept of code, it has benefited from ideas already prevalent in developer circles such as version control. Version control brings the benefit that not only can you see what the infrastructure was, but you can also get reviews of changes by your peers before the change is made live; known to most developers as Pull Request (PR) reviews.

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