Jrcichra.dev

Jrcichra.dev News

About

I’m a Systems Engineer at Cloudflare who loves writing software and building solutions with new technologies. Skills Programming Go Python Rust NodeJS Perl Assembly (x86 & 6809) Shell Scripting MySQL / Oracle / Postgres / MySQL / CockroachDB gRPC / Protobuf / REST Cloudflare tools (tunnels, pages, workers, etc) Git Backend / Systems Linux Networking (IPv6, BGP, Wireshark) Kubernetes & Docker Helm / cdk8s Github Actions AWS / GCP / Azure / Oracle Cloud / OVH / Linode Grafana Prometheus / AlertManager Ansible / Salt / Vagrant kube-vip / MetalLB / fabio PXE / TFTP / squashfs ZFS / Ceph KubeVirt Debian / Arch Linux / RHEL / Ubuntu NFS / SMB / iSCSI Wireguard / Nebula / Tailscale Home Projects Android Location Tracker - Rust backend, React Native frontend Distributed block storage filesystem written in Rust using Ceph’s famous CRUSH algorithm bitwarden-secrets-operator, which reconciles BitwardenSecrets into Kubernetes Secrets Bluetooth App that opens gate with Raspberry Pi, relays, and reed switches Phidget Temperatures and Humidity Sensor collection with Go into MySQL, displayed in Grafana Raspberry Pi car automation - record with ignition - downloads dashcam footage when arriving home Homelab ARM64 ZFS NAS serving NFS & iSCSI LUNs 9-node Kubernetes cluster running in Oracle Cloud hosting projects Linux VFIO/GPU passthrough for graphics-accelerated virtual machines 3-node nomad cluster on Raspberry Pis Tools I use: Development

30.3.2024 00:00About
...

Axzez Interceptor Part 2 - 5x16TB

...

TLDR I bought some more refurbished Seagate Exos 18 HDD’s for my Axzez Interceptor. Here are the results: admin@interceptor:~$ lsblk | grep disk sda 8:0 0 14.6T 0 disk sdb 8:16 0 14.6T 0 disk sdc 8:32 0 14.6T 0 disk sdd 8:48 0 14.6T 0 disk sde 8:64 0 14.6T 0 disk But first, Ceph I did try Ceph/Rook as I alluded to in the last post. However, it went terribly :) Rook in a k3d cluster got stuck before it could provision OSD’s, and Ceph Pacific did eventually load the dashboard and mark OSDs up/in, but it completely locked up when I went to make a storage pool, replicas 3.

23.5.2022 00:00Axzez Interceptor Part 2 - 5x16TB
...

Hands on with the Axzez Interceptor

...

Intro I got my hands on the new Interceptor board from Axzez! What is it? The Interceptor is built on top of the Raspberry Pi Compute Module 4 Platform. Jeff Geerling did a video on it back in Februrary, detailing most of the product’s features. I won’t go into those features here. I want to go over the stock Interceptor OS and the experience I’ve had in my first few days.

26.4.2022 00:00Hands on with the Axzez Interceptor
...

Hugo

...

I ported my Blog over to Hugo. It’s building on Cloudflare Pages. Hello from the Edge!

31.1.2022 00:00Hugo
...

Switching to CockroachDB

...

Overview I decided to switch my website’s database from MySQL to CockroachDB. So far it’s been a great switch. I don’t have many transactions, but being able to do rolling no-downtime upgrades, drain a node without fear, and have out-of-the-box horizontal scaling is a huge plus. What is CockroachDB? CockroachDB is a resilient distributed database built on top of the Raft consensus algorithm. It’s a highly available, postgres-compatible open source project.

25.6.2021 00:00Switching to CockroachDB
...

Transparent Wireguard Networks in KVM

...

Overview The cloud is an exciting place. It unlocks new scalability features and managed services. But cloud is expensive, and running some workloads “on-prem” makes more financial sense. I’ve been designing my personal infrastructure with a “cloud-first” mentality. Most of my cloud workloads are computationally lightweight, consisting of web servers, small databases, and light daemons. I run it all in Kubernetes, between two cloud vendors, tied with Wireguard. The existing tie I have today between Oracle Cloud and OVH got me thinking…“why can’t my local machine be another ‘cloud provider’?

29.9.2020 00:00Transparent Wireguard Networks in KVM
...

Welcome

...

Hello and welcome to my first blog! I’ll be using this site to document my projects. My first article will be on transparent wireguard tunnels in KVM.

28.9.2020 00:00Welcome
...