Yuliia Kostrikova

HowTo: Fix iSCSI mounts after reboot

a follow-up to my previous article on PXE/iSCSI setup, addressing the annoying issue of iSCSI auto-mounting failure

k8s cluster on Raspberry PI's with iSCSI block storage

exploring the challenges of running a k8s cluster on Raspberry PI's with PXE network boot and overcoming containerd storage limitations using iSCSI

Detailed HowTo: PXE boot multiple RPi (Birthday Edition 🍰)

PXE (Preboot eXecution Environment) is a client-server environment which makes possible to boot and install operating systems without the need of physical media.

Setting Up a DHCP Server on Synology NAS in a UniFi Dream Machine SE Subnet

UniFi Dream Machine In this blog post, I’ll guide you through the process of setting up a DHCP server on your Synology NAS within a subnet created on a UniFi Dream Machine Special Edition (UDM SE). Synology NAS Prerequisites Before we start, ensure you have the following: UDM SE : UniFi Dream Machine Special Edition. Synology NAS : Network Attached Storage device from Synology. Raspberry Pi…

RPI 5 on Ubuntu 24.04 (Headless): Connect to WiFi / Mobile Hotspot

RPI 5 on Ubuntu 24.04 (headless): Connect to WiFi / Mobile Hotspot Introduction In my free time, I enjoy tinkering with my home lab, exploring new projects and challenges. Recently, I decided to connect my Raspberry Pi 5 to a mobile hotspot—a seemingly straightforward task. However, it turned out not so smooth. In this post, I’ll walk you through how I resolved the error brcmfmac:…

Automating UML Diagrams with ChatGPT and PlantUML

Learn how to effortlessly visualize system designs, saving time on syntax and focusing on architecting solutions

SAA-C03:: AWS Storage. EBS & EFS

Study Notes

SAA-C03:: Simple Storage Service (S3)

Study Notes

SAA-C03:: Introduction to Cloud Computing and AWS

Study Notes

How to Mount Synology NAS to RaspberryPi via NFS

My Use case To establish a seamless synchronization of project files between a MacBook (working station) and a Raspberry Pi (hosting server), allowing for automatic updates and accessibility of the project from both devices. device/tool version DS420+ DSM 7.2-64570 Raspberry PI 400 The user begins working on the project using the IDE on the MacBook, editing and updating project files within the…

Traefik behind AWS ELB. X-Forwarded-For header

Traefik v1.7 is running within a Docker Swarm, functioning as a global service. Consequently, an instance of Traefik is deployed for each host within our Docker Swarm cluster. It is important to note that the Swarm’s routing mesh is not employed in this setup. Instead, the port mode is configured as “host,” allowing the port to be attached to the host’s network. traefik:…

Custom error page in Traefik v2.x. Finally

What you will learn today 🦦: what is Traefik and why I decisively recommend to use it with Docker Swarm how to show custom error page if Traefik returns 404 (service not found) How I met Traefik 😁 Traefik is a top modern reverse proxy and load balancer. I started to use it from major version 1. At that moment, I already had Docker Swarm cluster, which I began to prepare for production use, and…

Solution for CodeSignal: addTwoHugeNumbers (Linked List part 👯)

Task description on Codesignal I’ve spend decent amount of time in order to figure out that I don’t need any string manipulation in this task 😅. My first try was adding missing zeros to the beginning of number slot, convert int to str and back, then the resulting string split by 4 but no luck … It turned out that is simple math 😀 I wanna share my solution with detailed comments ⬇️ (Time…

How to analyse “high CPU” in php on production. Part 1

How to analyse “high CPU” in php on production. Part 1

XDebug for PHP docker container on macOS

How to guide: Configure remote debugging with XDebug for php docker container on macOS

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