HowTos, , Postfix

Configure Postfix to Use Gmail SMTP on Ubuntu 20.04

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gen_too
HAProxy, HowTos, Load Balancers

Install and Setup HAProxy on CentOS 8

HowTos, Security

Cyber Security: 6 Reasons Why It Is Crucial for Your Business

Monitoring, Elastic Stack

Install Elasticsearch 7.x on Ubuntu 18.04/Debian 9.8

HowTos

Here’s Why You Should Let a Professional Design Your Website

Containers

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Kubernetes Resource Optimization with Vertical Pod Autoscaler (VPA)

Kubernetes Resource Optimization with Vertical Pod Autoscaler (VPA)

This blog post will take you through Kubernetes resource optimization with Vertical Pod Autoscaler. Managing resource allocation efficiently in Kubernetes …
Deploy Apps on OpenShift Using BuildConfig

How to Deploy Apps on OpenShift Using BuildConfig: A Step-by-Step Guide (2025)

In this tutorial, I will walk you through how to deploy apps on OpenShift using BuildConfig. OpenShift has become the …
deploy multinode OpenShift cluster using UPI

How to Deploy Multinode OpenShift Cluster Using UPI/User Provisioned Infrastructure

In this blog post, you’ll learn how to deploy multinode OpenShift cluster using UPI (User Provisioned Infrastructure). UPI is one …
check Docker container RAM and CPU usage

How to Check Docker Container RAM and CPU Usage

Assign Roles to Users and Groups in Kubernetes Cluster

Assign Roles to Users and Groups in Kubernetes Cluster

Kubernetes Architecture: A High-level Overview of Kubernetes Cluster Components

Kubernetes Architecture: A High-level Overview of Kubernetes Cluster Components

automate OpenShift Deployments with GitLab CI/CD pipelines

Automate OpenShift Deployments with GitLab CI/CD Pipelines

monitor Docker containers metrics using Grafana

Monitor Docker Containers Metrics using Grafana

Extend OpenShift CoreOS /sysroot Root Filesystem

Extend OpenShift CoreOS /sysroot Root Filesystem

deploy AWX on Kubernetes cluster using AWX Operator

Working Guide: Deploy AWX on Kubernetes Cluster with AWX Operator

Setup Kubernetes Cluster on Ubuntu

Install and Setup Kubernetes Cluster on Ubuntu 24.04

how to Install Docker Desktop on Ubuntu

How to Install Docker Desktop on Ubuntu 22.04/Ubuntu 20.04

Monitor Docker Swarm Node Metrics using Grafana

Monitor Docker Swarm Node Metrics using Grafana

Install and Run MariaDB as a Docker Container

How to Install Docker on Ubuntu 24.04

How to Install Docker on Ubuntu 24.04

How to Integrate MinIO S3 Storage with Kubernetes/OpenShift

How to Integrate MinIO S3 Storage with Kubernetes/OpenShift

docker elk

Deploy a Single Node ELK Stack Cluster on Docker Containers

Quickly Install MySQL 8 on Debian 12

Quickly Install MySQL 8 on Debian 12

Deploy NRPE Agent as a Docker container

Deploy NRPE Agent as a Docker Container

Security

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Tips For Secure Gaming: Why Do You Need a VPN While Playing? 

Fix AlienVault HIDS Events Displaying 0.0.0.0 as IP Address

Install and Configure AIDE on Ubuntu 18.04

Most Popular

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How To Create An Excellent Business Marketing Plan
HowTos

How To Create An Excellent Business Marketing Plan

Install Cortex on Ubuntu 22.04/Ubuntu 20.04
Security, HowTos, Monitoring

Install Cortex on Ubuntu 22.04/Ubuntu 20.04

Graylog, HowTos, Monitoring

Create Squid Logs Extractors on Graylog Server

Install BackupPC
HowTos

Install BackupPC on Debian 11

shrink KVM virtual machine LVM partitioned disk
Storage, HowTos, KVM, Virtualization

Shrink KVM Virtual Machine LVM Partitioned Disk

Configure Host-Based Access Control on FreeIPA Server
HowTos, Directory Server, FreeIPA

Configure Host-Based Access Control on FreeIPA Server

How to Add and Scan a Target for Vulnerabilities on OpenVAS Scanner

How to Enable HTTPS for Request Tracker on Linux

Generate Wildcard SSL Certificates for Elasticsearch

Install and Use Nikto Web Scanner on Ubuntu 18.04

What Should Companies Do To Increase IT Safety

Install and Use Nikto Web Scanner on Ubuntu 20.04

Install Passbolt Password Manager on Rocky Linux 8

Install and Setup GVM 11 on Ubuntu 20.04

Install OSSEC Agent on CentOS 8

How to Install Arkime with Elasticsearch 8 on Ubuntu 24.04

Installing Metasploit on Ubuntu 18.04 LTS

Windows Server Security Essentials from Experienced System Administrators

MONITORING

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How to Measure CPU Usage in Linux

How to Measure CPU Usage in Linux

koromicha

This simple guide will take you through how to Measure CPU Usage in Linux. CPU …

Setup Multi-node Elasticsearch Cluster

Setup Multinode Elasticsearch 8.x Cluster

gen_too

Follow through this tutorial to learn how to setup multinode Elasticsearch 8.x cluster. As of …

filebeat

Install Filebeat on Fedora 30/Fedora 29/CentOS 7

Jay Decrame

In this guide, we are going to learn how to install Filebeat on Fedora 30/Fedora …

Setup Kibana Elasticsearch and Fluentd on CentOS 8

koromicha

Hello there. In this tutorial, you will learn how to setup Kibana Elasticsearch and Fluentd …

Process and Visualize ModSecurity Logs on ELK Stack

Visualize ClamAV Scan Logs on ELK Stack Kibana

gen_too

In this tutorial, you will learn how to visualize ClamAV scan logs on ELK stack …

Install LibreNMS on Linux

Install LibreNMS on Debian 11/Debian 10

koromicha

Follow through this tutorial to learn how to install LibreNMS on Debian 11/Debian 10. LibreNMS …

install zabbix agent

Install Zabbix Agent on CentOS 7 for Zabbix Monitoring

koromicha

Learn how to install Zabbix Agent on CentOS 7 for Zabbix monitoring. In our previous …

Install Filebeat 9 on Ubuntu/Debian

Install Filebeat 9 on Ubuntu/Debian

Kifarunix

How can I install Filebeat 9 on Ubuntu/Debian? Well, the installation of Filebeat 9 on …

wazuh agents

Install Wazuh Agent on Rocky Linux 8

gen_too

In this tutorial, you will learn how to install Wazuh agent on Rocky Linux 8. …

How to Install Osquery on Ubuntu 18.04

koromicha

In this guide, we are going to learn how to install osquery on Ubuntu 18.04. …

Install and Configure Tripwire Security Monitoring tool on CentOS 8

In this tutorial, you will learn how to install and configure Tripwire security monitoring tool on CentOS 8. Tripwire is …
nagios

Add Hosts to Nagios Server For Monitoring

In this guide, we are going to learn how to add hosts to Nagios Server for monitoring. Well, in order …
install and configure snmp on Linux

Install and Configure SNMP on Rocky Linux 8/9

Follow through this tutorial to learn how to install and configure SNMP on Rocky Linux 8/9. SNMP stands for Simple Network Management Protocol. It …

NETWORKING

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Easy way to Test Internet Speed on Linux Terminal

Easy way to Test Internet Speed on Linux Terminal

In this tutorial, we will show you an easy way to test Internet speed on Linux terminal. More often than …
Useful Facts About Setting Up Mobile Rugged Servers

Useful Facts About Setting Up Mobile Rugged Servers

Modern warfare is evolving. Having boots on the ground is still the most important component of winning any conflict, however, …
install Malcolm network traffic analysis tool on Ubuntu

Analyze PCAP Files using Malcolm Network Traffic Analysis tool

In this tutorial, you will learn how to analyze PCAP files using Malcolm network traffic analysis tool. Malcolm can be …
Install and use NMCLI tool on Debian Linux

Install and use NMCLI tool on Debian Linux

In this tutorial, we provide a step by step guide on how to install and use NMCLI tool on Debian …

Install and Setup OpenVPN Server on Fedora 29/CentOS 7

In this guide, we are going to learn how to Install and Setup OpenVPN Server on Fedora 29/CentOS 7. OpenVPN …
install wireshark on Linux

Install Latest Wireshark on Ubuntu 18.04

In this guide, we are learn how to install latest Wireshark on Ubuntu 18.04. Wireshark is the world’s foremost and …
Set Static Routes via an Interface/IP on CentOS/Ubuntu

Set Static Routes via an Interface/IP on CentOS/Ubuntu

In this tutorial, you will learn how to set static routes via an interface/IP on CentOS/Ubuntu systems. In a network, …
Create Virtual/Secondary IP addresses on an Interface in Linux

Create Virtual/Secondary IP addresses on an Interface in Linux

Follow through this tutorial to learn how to create virtual/secondary IP addresses on an interface in Linux. This enables you …
Install and use NMCLI tool on Debian Linux

Connect to WiFi in Linux Using NMCLI command

This tutorial will guide you on how to connect to WiFi in Linux using NMCLI command. NMCLI is a command-line …
Configure Static IP Addresses using Netplan on Ubuntu

Configure Static IP Addresses using Netplan on Ubuntu

How to set static IP addresses using Netplan on Ubuntu? In this tutorial, you will learn how to configure static …
How to fix Cisco Catalyst 8000v Edge Stuck on Bootloader upgrade not Necessary

Cisco Catalyst 8000v Edge Stuck on Bootloader upgrade not Necessary

How to fix Cisco Catalyst 8000v Edge Stuck on Bootloader upgrade not Necessary? Well, in one way or another, you …
install wireshark on Linux

Install Wireshark on Ubuntu 22.04

In this guide, you will learn how to install Wireshark on Ubuntu 22.04. Wireshark is the world’s foremost and widely-used …

STORAGE

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Quick Way to Setup Samba File Server on Debian 10

Install and Setup Ceph Storage Cluster on Ubuntu 20.04

Configure ownCloud OpenLDAP Authentication

How to Upgrade ownCloud 9 to ownCloud 10 on Ubuntu 16.04

Create RAID Level 10 (RAID 1+0) on Ubuntu 20.04

Shrink KVM Virtual Machine LVM Partitioned Disk

Extend Existing LUKS-Encrypted LVM by Adding Physical Volume

Install ownCloud Server on Debian 12

VIRTUALIZATION

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Install VirtualBox Guest Additions on Ubuntu 18.04

Jay Decrame

In this guide, we are going to learn how to install VirtualBox Guest Additions on …

AutoStart VirtualBox VMs on System Boot on Linux

AutoStart VirtualBox VMs on System Boot on Linux

koromicha

In this guide, we are going to learn how to autostart VirtualBox VMs on system …

How to Upload ISO File to VMware ESXi Datastore using vSphere Client

koromicha

Hello there, welcome to this tutorial on how to upload an ISO file to VMware …

virtualbox ubuntu 20.04

Install Latest VirtualBox on Ubuntu 20.04

koromicha

In this tutorial, you will learn how to install latest VirtualBox on Ubuntu 20.04. As …

Upgrade VirtualBox 6.x to VirtualBox 7.x on Ubuntu/Debian

Upgrade VirtualBox 6.x to VirtualBox 7.x on Ubuntu/Debian

koromicha

In this tutorial, you will learn how to upgrade VirtualBox 6.x to VirtualBox 7.x on …

Install Ubuntu 21.04 Desktop on VirtualBox

Install Ubuntu 21.04 Desktop on VirtualBox

koromicha

In this tutorial, you learn how to install Ubuntu 21.04 Desktop on VirtualBox. The latest …

Install VirtualBox Guest Additions on Fedora 31/32

koromicha

In this guide, we are going to learn how to install VirtualBox Guest Addition on …

Install NixOS with Gnome Desktop on VirtualBox

Install NixOS with Gnome Desktop on VirtualBox

Kifarunix

In this tutorial, you will learn how to install NixOS with Gnome Desktop on VirtualBox. …

Start and Stop KVM Virtual Machines from Command Line

Start and Stop KVM Virtual Machines from Command Line

koromicha

This guide will take you through how to start and stop KVM virtual machines from …

Creating KVM Virtual Machines with Kickstart: A Step-by-Step Guide

Creating KVM Virtual Machines with Kickstart: A Step-by-Step Guide

Kifarunix

In this tutorial, we will walk you through the steps of creating KVM virtual machines …

shrink KVM virtual machine LVM partitioned disk

Easy Way to Decrease/Shrink KVM Virtual Machine Disk Size

In this tutorial, you will learn an easy way to decrease/shrink KVM virtual machine disk size. In most cases, there …
install ubuntu 25.04 on virtualbox

How to Install Ubuntu 25.04 on VirtualBox: A Step-by-Step Guide

Wondering how to install Ubuntu 25.04 on VirtualBox? Ubuntu 25.04, codenamed “Plucky Puffin,” is the latest iteration of Canonical’s renowned …
Install VirtualBox Guest Additions on Oracle Linux 9

Install VirtualBox Guest Additions on Oracle Linux 9

Follow through this tutorial to learn how to install VirtualBox guest additions on Oracle Linux 9. VirtualBox guest additions “consist …

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