@miracola

Jay Miracola

@miracola

Kubernetes, microservices, automation, and more

Joined January 2024

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Jay Miracola's blogs

Jay Miracola - Clouds Are Metalblog.miraco.la6 posts

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blog.miraco.la

Write a Kubernetes Controller With Zero Code

The Problem Sometimes we want to have control loops that watch for state, and make changes based on that state. In Kubernetes that's a controller, but writing a Kubernetes controller in Go is a non-trivial task. It requires knowledge of Kubernetes, g...

Jan 143 min read

blog.miraco.la

Old hardware, New (AI) problems

What do we say to buying bleeding edge hardware for running AI workloads? Not today! I have an old HP Z600 (2009!) and GPU that I wanted to use to run #Kubernetes, #Ollama, Open WebUI, and utilize NVIDIA’s gpu-operator. It has been a solid machine th...

Feb 3, 20251 min read

blog.miraco.la

BGP ,Cilium, and FRR: Top of Rack For All!

I recently came across a LinkedIn post talking about the above concepts and its trivialness to setup. The goal: Use Cilium's BGP capabilities to either expose a service or export the pod cidr and advertise its range to a peer. We are all on different...

Mar 15, 20243 min read

blog.miraco.la

How conntrack Could Be Limiting Your k8s Gateway

Under high load in specific scenarios, a Kubernetes gateway may be limited by more than just its obvious CPU and Memory limits or requests if Karpenter is aggressively sizing the node (a different topic!). You may be hitting a wall in conntrack exhau...

Feb 9, 20243 min read

blog.miraco.la

A Tale of Two VLANS

When handling sensitive traffic, in my scenario DNS, its sometimes necessary to isolate the traffic from one another. In this example, I wanted one DNS server on my Kubernetes cluster to serve two VLANs but I didn't want those VLANs to have any acces...

Feb 5, 20244 min read

Jay Miracola

About

Available for

Jay Miracola's blogs

Recently published

Write a Kubernetes Controller With Zero Code

Old hardware, New (AI) problems

BGP ,Cilium, and FRR: Top of Rack For All!

How conntrack Could Be Limiting Your k8s Gateway

A Tale of Two VLANS

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Jay Miracola

About

Available for

Jay Miracola's blogs

Recently published

Write a Kubernetes Controller With Zero Code

Old hardware, New (AI) problems

BGP ,Cilium, and FRR: Top of Rack For All!

How conntrack Could Be Limiting Your k8s Gateway

A Tale of Two VLANS