Integration Archives - Page 2 of 3

Using the OPNsense API with Python

Makson Lee / September 12, 2025

The OPNsense firewall exposes a REST API for automation and integration. This post shows how to use the API from […]

Zabbix Agent Active vs Passive: What They Mean and When to Use Each

Makson Lee / September 9, 2025

TL;DR How Active Works How Passive Works Quick Comparison Aspect Active Passive Connection Agent → Server :10051 Server → Agent

Data Platforms & Analytics

Fixing Huge /var/log/syslog Caused by Debezium Cassandra Connector

Makson Lee / August 28, 2025

When I followed my earlier guide End-to-End Stream: Cassandra 5.0.5 CDC → Kafka 4.0 (SASL/SSL) → Spark 3.5.6 → Delta

Data Platforms & Analytics

Enable Spark Connect (systemd) + Set Hive Catalog on Spark 4.0

Makson Lee / August 23, 2025

This post is a follow-up to:Upgrade Apache Spark 3.5.6 → 4.0 on Ubuntu 24.04 (Single Node, Classic Mode) What you’ll

Data Platforms & Analytics

Upgrade Apache Spark 3.5.6 → 4.0 on Ubuntu 24.04 (Single Node, Classic Mode)

Makson Lee / August 22, 2025

Goal: Install Spark 4.0.0 (Hadoop 3, Connect build) at /opt/spark, but keep Classic mode for now by setting SPARK_CONNECT_MODE=0.We’ll remove

Observability & Operations

Zabbix 7.4 + Keycloak (SAML 2.0): End-to-End Setup with JIT Provisioning

Makson Lee / August 20, 2025

This guide connects Zabbix 7.4 at https://zabbix.maksonlee.com to Keycloak at https://keycloak.maksonlee.com (realm maksonlee.com) using SAML 2.0, and enables Just-in-Time (JIT)

Networking & Connectivity

Simulating Geo-Distributed Network Latency with tc on Ubuntu 24.04

Makson Lee / July 31, 2025

When deploying Ceph RGW Multisite, it’s common to span zones across different regions—Asia, Europe, America—connected by wide-area networks. These connections

DevOps & Software Delivery