WireGuard Single-Instance VPN: AWS EC2 Instance to MikroTik hEX at Home
In a previous post, I configured a WireGuard site-to-site VPN between my MikroTik hEX router at home and OPNsense 25.7 […]
AWS EC2, WireGuard
Hands-On DevOps & Homelab Experiments
From Kubernetes and Ceph to Proxmox, Kafka, Jenkins, Vault, Android, and CI/CD, every guide here is a tested, step-by-step walkthrough from my lab.
AWS EC2, WireGuard
Fix WireGuard wg Command I/O Issues in an AWS SSM Session Manager Session
I installed WireGuard on an Ubuntu 26.04 EC2 instance and connected to the instance through an AWS SSM Session Manager
AWS
Create a Custom VPC Based on the Default VPC Layout
AWS creates a default VPC in many Regions. It is convenient for quick testing because it already has public subnets,
Nominatim, OSRM
Deploy OSM Services with Nominatim and OSRM on Ubuntu 26.04
This post shows how to deploy OpenStreetMap-related services on a separate Ubuntu 26.04 server. The OSM service domain used in
Ubuntu
Fix PuTTY Right-Click Paste Not Working in vi on Ubuntu 26.04
When I connected to an Ubuntu 24.04 server using PuTTY, I could open vi, enter insert mode, and paste text
PostGIS, PostgreSQL
Install PostgreSQL 18 with PostGIS on Ubuntu 24.04
PostGIS adds spatial database features to PostgreSQL. With PostGIS, PostgreSQL can store geographic data such as coordinates, points, routes, and
ThingsBoard
How to Bulk Delete ThingsBoard Devices by Prefix Using Python
In this post, I will show how to safely bulk delete ThingsBoard devices by name prefix using Python. This is
Kubernetes, ThingsBoard
Collect U.S. Stock Daily Close Prices into ThingsBoard with Polygon, Docker, and Kubernetes
In this post, I will show how to run a Python-based stock data collector that publishes U.S. stock market data
Kubernetes
Troubleshooting Kubernetes Node Disk Usage When a Pod Reports Low Disk Space
After running Kubernetes for a while, I noticed that some systems running inside my Kubernetes cluster started reporting low disk
EJBCA
Enable Key Recovery in EJBCA for Device Certificates
In my previous post, I used EJBCA RA Web to issue ThingsBoard device certificates from an externally signed IoT device