The Katz Experiments
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  • Experimenting mcp-go, AnythingLLM and local LLM executions

    calendar Apr 21, 2025 · 8 min read · MCP LLM  ·
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    Experimenting with MCP-Go, AnythingLLM and local executions NOTE: I am no LLM, AI or whatever expert. Far from this. I have decided to write this blog post mostly as a way to track my progress and share my findings! There may be some mistakes here, please let me know! I got hyped into the MCP trend. Usually I wait a …


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  • Implementing a CAPI IPAM Provider

    calendar Feb 21, 2024 · 12 min read · ClusterAPI Kubernetes  ·
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    Implementing a CAPI IPAM Provider One of the oldest problems of Cluster API and Kubernetes cluster creation is managing the Nodes IPs. While it is possible to rely on DHCP for the node IP allocation, and some other cloud providers have their own way of managing the IPs, for some enterprises and onpremises environments …


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  • NGINX NJS Experiments - Dynamic Backends

    calendar Sep 12, 2021 · 8 min read · NGINX Ingress  ·
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    NGINX NJS and the dynamic config Recently, due to some bugs in Ingress NGINX I have decided to look into alternatives on the dynamic upstream configuration. For those not familiar with Ingress NGINX dynamic configuration, it relies massively on Lua and Openresty components to allow the reconfiguration of backends …


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  • Using Falco to monitor outbound traffic for Pods in Kubernetes

    calendar Apr 16, 2021 · 10 min read · Kubernetes Falco Security Observability  ·
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    Using Falco to monitor outbound traffic for Pods in Kubernetes Falco is an opensource project from Sysdig focused on container runtime and cloud native security, that uses modern technologies like eBPF to monitor environment situations using syscalls and other events sources We’ve used Falco some time ago as a PoC to …


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  • Kubernetes Control Plane natively on FreeBSD with K3s

    calendar Dec 30, 2020 · 6 min read · FreeBSD kubernetes k3s  ·
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    Introduction I’ve been trying, on the past few days make Kubernetes usable on FreeBSD. Why? Some would say I like to suffer. Others would say I have much spare time. To be honest, I’m doing this for fun. FreeBSD, for me, is one of the most stable and performant Operating Systems, and it’s sad that we cannot use it to …


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  • The mix (and mess) of Packet Filter in Linux Part 2 - eBPF + XDP

    calendar Nov 1, 2020 · 10 min read · Packet filtering ebpf xdp  ·
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    Introduction In the first part of this article, I’ve shown the most common (so far) methods of doing packet filtering in Linux. This part of the article is all dedicated to cover a brief introduction of eBPF and XDP, being used to packet filtering. I’ll not cover the usage of eBPF to monitor resources and performance, …


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  • The mix (and mess) of Packet Filter Linux - Part 1

    calendar Sep 13, 2020 · 9 min read · Packet filtering iptables netfilter ebpf Kubernetes  ·
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    Introduction So you’ve got a brand new Linux distribution. You start your Kubernetes distributions, and decide for a specific CNI that provides network policies. Then you figure out that something is (or is not) working, does an iptables -L to check what is going on and boom: where are all my iptables rules? Worst of …


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  • Flatcar Linux in VMware Player — 5 minute command line deploy

    calendar Sep 13, 2020 · 4 min read · Flatcar VMWare Automation  ·
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    So I needed to create a new Kubernetes Lab. Back in time, I’ve created a shell script to deploy a lot of CoreOS servers to my VMware Player, but I hadn’t touched that script since that time. With the deprecation of CoreOS and the glorious rise of Flatcar Linux to save us, and while needing to test some stuffs in …


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Ricardo P. Katz

SRE, does Kubernetes Stuff around there. Lego and planes addicted
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Featured Posts

  • Experimenting mcp-go, AnythingLLM and local LLM executions
  • Implementing a CAPI IPAM Provider
  • NGINX NJS Experiments - Dynamic Backends
  • Using Falco to monitor outbound traffic for Pods in Kubernetes
  • Kubernetes Control Plane natively on FreeBSD with K3s
  • The mix (and mess) of Packet Filter in Linux Part 2 - eBPF + XDP
  • The mix (and mess) of Packet Filter Linux - Part 1

Recent Posts

  • Flatcar Linux in VMware Player — 5 minute command line deploy

Categories

TECHNOLOGY 8

Tags

KUBERNETES 4 EBPF 2 PACKET FILTERING 2 AUTOMATION 1 CLUSTERAPI 1 FALCO 1 FLATCAR 1 FREEBSD 1 INGRESS 1 IPTABLES 1 K3S 1 LLM 1 MCP 1 NETFILTER 1
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AUTOMATION1 CLUSTERAPI1 EBPF2 FALCO1 FLATCAR1 FREEBSD1 INGRESS1 IPTABLES1 K3S1 KUBERNETES4 LLM1 MCP1 NETFILTER1 NGINX1 OBSERVABILITY1 PACKET FILTERING2 SECURITY1 VMWARE1 XDP1
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