End-to-End: Stream Cassandra 5.0.5 CDC → Kafka 4.0 (SASL/SSL) → Spark 3.5.6 → Delta Lake
This post shows a clean, reproducible path to stream ThingsBoard data stored in Cassandra 5.0.5 into Kafka 4.0 using Debezium […]
Data Platforms & Analytics
Engineering field notes
Practical DevOps, Infrastructure, and Platform Engineering Notes
Tested walkthroughs from real lab and production-style setups across Linux, cloud, Kubernetes, networking, security, observability, data platforms, IoT, Android, and self-hosted services.
Data Platforms & Analytics
Fix cqlsh “unsupported version of Python” on Ubuntu 24.04 (Cassandra 5.0.5) with pyenv
Symptom Ubuntu 24.04 ships Python 3.12, but cqlsh 6.2.0 (Cassandra 5.0.x) only supports up to Python 3.11. This post shows
Cloud, Linux & Virtualization
Install Python 3.11 on Ubuntu 24.04 (Keep System 3.12) with pyenv
Need Python 3.11 on Ubuntu 24.04 (which ships 3.12)? Use pyenv to install 3.11 side-by-side without touching /usr/bin/python3. At a
Cloud, Linux & Virtualization
Fixing PCIe AER Errors on Minisforum Venus Series (AMD Ryzen 9 7940HS)
Introduction If you own a Minisforum Venus series mini PC with an AMD Ryzen 9 7940HS and run heavy workloads
Data Platforms & Analytics
How to Enable Ceph RGW Kafka Bucket Notifications
This guide shows you how to configure Ceph RGW to send bucket event notifications to Kafka over HTTPS using SASL/PLAIN
Data Platforms & Analytics
How to Install Kafbat UI for Kafka 4.0 with SASL/PLAIN and HAProxy SSL Termination
In this post, we’ll set up Kafbat UI, a modern web-based Kafka management interface, to work with a secure Kafka
Data Platforms & Analytics
How to Enable Username/Password Authentication (SASL/PLAIN) in Kafka 4.0 with HAProxy SSL Termination
In the previous post, How to Install Kafka 4.0 on a Single Ubuntu 24.04 Node with HAProxy SSL Termination, we
Data Platforms & Analytics
How to Install Kafka 4.0 on a Single Ubuntu 24.04 Node with HAProxy SSL Termination
Introduction Apache Kafka 4.0 introduces KRaft mode (ZooKeeper-free) as the default. In this guide, we’ll install Kafka 4.0 on a
Cloud, Linux & Virtualization
Testing Object Versioning and Synchronization in Ceph RGW Multisite
Introduction In the previous post, How to Configure Ceph RGW Multisite with HAProxy and Let’s Encrypt on Ubuntu 24.04, we
Networking & Connectivity
Simulating Geo-Distributed Network Latency with tc on Ubuntu 24.04
When deploying Ceph RGW Multisite, it’s common to span zones across different regions—Asia, Europe, America—connected by wide-area networks. These connections