DNS Resolution: From Root Servers to DNS Caching
When a user enters a website address (e.g., www.example.com) into a web browser, the system must resolve the domain name into an IP address before establishing a connection. This process,…
Set Up MySQL 8.4 Replication for Zabbix Using Percona XtraBackup
MySQL replication is a powerful way to create a reliable and scalable database environment for Zabbix. One effective method for setting up replication is to use Percona XtraBackup, a robust…
HTTPS transaction process
In this post I am walking through the HTTPS transaction process starting from the ClientHello request until the encryption of real data. 1. TCP Handshake The client initiates a three-way…
VM clone from template by Terraform and vSphere provider
In this post I will walk through the creation of VM clone from template using Terraform and vSphere provider. I have created a new VM with HCP Packer following the…
Ubuntu 24.04 VM using HashiCorp Packer and vSphere ISO Plugin
In this post I am going to create an Ubuntu 24.04 virtual machine image using HashiCorp Packer, Autoinstall, Cloud-init and the Ansible provisioner. Running Packer command, the vSphere builder will…
AlmaLinux 9 VM using HashiCorp Packer and vSphere ISO Plugin
This guide walks through the process of setting up a virtual machine (VM) with AlmaLinux 9 using HashiCorp Packer and the vSphere ISO plugin. I will create a Packer template,…