Linux, Infrastructure & Web Engineering Blog

Building a Retro-Modern Terminal OS Web App: Architecture, Visuals, and Privacy-First IP Geolocation

Explore the tech stack behind a modern glassmorphic terminal IP checker. Featuring a Mondaine SBB clock, xeyes emulation, and real-time edge geolocation.

2026.06.15

WordPress/Web

ZABBIX module Hello World

A minimal “Hello World” example for Zabbix modules, showing the basic structure,how modules are loaded by the Zabbix server, and a clean starting point for custom module development.

2026.01.26 2026.01.27

ZABBIX/Monitoring

How Zabbix HA Really Works:No VIP, No Heartbeat, Just the Database

This article explains how Zabbix HA actually works by observing realfailover behavior, database coordination, and web frontend behavior.

2026.01.17 2026.01.25

ZABBIX/Monitoring

How to install Homer using yum command.

Homer is work on Web browser.It able to showing lists of CDRs and displaying SIP flow for each call.And you can see raw SIP packet for each call from browser.

2023.03.28 2025.07.01

VoIP

Microsoft Azure: In case of 2 NICs receiving same packets same time.

Explain about accelerated networking function of Azure.

2023.03.11 2023.03.13

Cloud/Virtualization

Linux shell: Using xargs with put argument to specified place

Explain for Using xargs with option -i for put argument to specified place.

2023.03.04 2023.03.07

Linux

How to send ping from zabbix-agent

There is a demand for ping monitoring from monitoring to another target.I will explain how to send ping from monitored host using UserParamater.

2023.02.25 2023.03.07

ZABBIX/Monitoring

How to make newline for bash output on CGI/bash

Run Linux commands from a website using CGI and see the results. It also explains how to deal with multi-line output.

2022.12.23 2023.04.01

Linux

How to install ZABBIX Proxy on CentOS

ZABBIX Proxy is a child ZABBIX Server without GUI.Proxy collects information from monitoring targets that cannot be directly accessed from ZABBIX Server (cannot access ZABBIX Server) and sends it to parent ZABBIX Server.

2022.10.08 2023.04.03

ZABBIX/Monitoring

How to decode SIP/TLS with Wireshark and Decrypting SRTP

IP-PBX that communicates with SIP may use UDP or may be encrypted with TCP/TLS.If it's encrypted, you can't see it with Wireshark.You can see decrypted SIP packets with importing key to Wireshark.

2022.06.30 2023.04.02

VoIP