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Introduction Terraform is an infrastructure-as-code tool that lets you define both cloud and on-prem resources in human-readable configuration files that you can version, reuse, and share. You can then use a consistent workflow to provision and manage all of your infrastructure throughout its lifecycle. Terraform can manage low-level components like… Continue Reading How to Create an AWS EC2 Instance Using Terraform in Ubuntu

Introduction This guide explains how to restore an ELK (Elasticsearch, Logstash, Kibana) stack from backup in a clean, structured, and production-safe manner.It is designed as a Disaster Recovery (DR) Runbook, suitable for system administrators managing ELK in production environments. Prerequisites Backup ScopeIncluded in Backup 1. Elasticsearch data (/var/lib/elasticsearch) 2. Elasticsearch… Continue Reading How to Perform ELK Server Backup, Restore, and Recovery (Elasticsearch 7.17.x)

Introduction A Kubernetes Secret is used to store sensitive data (like passwords, tokens, or keys) securely. Creating a Secret from a file is useful when you already have the secret value saved in a file (example: db_password.txt) and you want Kubernetes to manage it and provide it to Pods when… Continue Reading How to create a Kubernetes Secret from a file

Introduction: MySQL uses authentication plugins to verify user identities. Depending on how your server is configured, a user may authenticate with: If the wrong plugin is set, users may be unable to log in using a password, especially from applications like Node.js, PHP, WordPress, Python, etc.This guide shows how to… Continue Reading How to Change MySQL User Authentication Plugin for Password?

Introduction In the modern DevOps and cloud landscape, monitoring and visualization are essential for maintaining reliable and high-performing systems. Manually tracking metrics and logs across servers can be repetitive, unreliable and time-consuming. That’s where Grafana comes in, a powerful open-source tool for creating interactive dashboards and visual metrics. It allows… Continue Reading DEPLOYING A CONTAINERIZED GRAFANA USING DOCKER

Introduction : AVideo is an open-source video streaming and sharing platform that allows you to host and manage videos on your own server. It is widely used for creating private video portals, online courses, and internal company video libraries. In this guide, we’ll walk through the steps to set up… Continue Reading How to Install AVideo/YouPHPTube on Ubuntu Server

Introduction: In this guide, we’ll set up a lightweight Kubernetes cluster using K3s on CentOS 7. K3s is a fast and easy way to run Kubernetes without heavy resource usage. With one master and multiple worker nodes, you can build a clean, efficient, and production-ready cluster in just a few… Continue Reading How to Install Kubernetes Cluster Using K3s on Centos 7

Introduction: Automating application deployment is essential for delivering updates quickly and reliably. Manual deployment often slows down releases and increases the chance of errors. Webhooks offer a simple and powerful way to automate this process by triggering deployments whenever new code is pushed to the repository. This removes manual effort,… Continue Reading Automating Application Deployment with Webhooks

IntroductionWhen managing CI/CD pipelines, it’s common for Jenkins to deploy applications (like Node.js) to remote servers via SSH. Over time, server credentials such as SSH keys or passwords may change — and if Jenkins isn’t updated, your deployments will start failing.In this guide, we’ll walk through how to update Node… Continue Reading How to Update Node Server Credentials in Jenkins