HowTos

Install PostgreSQL 13 on Debian 11

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gen_too
HowTos, Automation, Automation, Red Hat Satellite

Automate Red Hat Satellite Content View Publish and Promote After a Sync Plan

Security, Elastic Stack, HowTos, Monitoring

Detect Changes to Critical Files in Linux using Auditbeat and ELK

HowTos, OS

Setting Up Linux VM for Coding: Student Guide

HowTos, Monitoring, Prometheus

Install and Configure Prometheus on Fedora 29/Fedora 28

Containers

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Gracefully Remove Worker Node from Kubernetes Cluster

Gracefully Remove Worker Node from Kubernetes Cluster

In this tutorial, you will learn how to gracefully remove worker node from Kubernetes cluster. If you are managing a …
How to Backup and Restore Applications in OpenShift 4 with OADP (Velero) and ODF

Part 1: How to Install and Configure OADP Operator on OpenShift 4

In this blog post, we cover how to install and configure OADP Operator on OpenShift 4 including preparing object storage, …
Understanding OpenShift Security Context Constraints

Understanding OpenShift Security Context Constraints: The Complete Guide

In this guide, we will explain OpenShift Security Context Constraints (SCCs) in simple terms. SCCs are essential components of OpenShift …
Provisioning Kubernetes Persistent Volumes with CephFS CSI Driver

Step-by-Step: Provisioning Kubernetes Persistent Volumes with CephFS CSI Driver

How to Set Up Alerting in OpenShift 4: Alertmanager, Alert Rules & Notifications

How to Set Up Alerting in OpenShift 4: Alertmanager, Alert Rules & Notifications

install docker ce

Install Docker on Rocky Linux 8|9

Deploy Apps on OpenShift Using BuildConfig

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

backup and restore kubernetes etcd cluster

Disaster Recovery in Kubernetes: etcd Backup and Restore with etcdctl and etcdutl

Static Pods vs Mirror Pods vs DaemonSets

Kubernetes Pod Management: Static Pods vs Mirror Pods vs DaemonSets

Deploy NRPE Agent as a Docker container

Deploy NRPE Agent as a Docker Container

How to Configure Production-Ready Monitoring in OpenShift: Prometheus, Alertmanager & Persistent Storage

How to Configure Production-Ready Monitoring in OpenShift: Prometheus, Alertmanager & Persistent Storage

How to Backup and Restore Applications in OpenShift 4 with OADP (Velero) and ODF

How to Backup and Restore Applications in OpenShift 4 with OADP (Velero) and ODF

Safely Upgrade Kubeadm Kubernetes Cluster: A Step-by-Step Guide

Safely Upgrade Kubeadm Kubernetes Cluster: A Step-by-Step Guide

Kubernetes Ingress Explained

Kubernetes Ingress Explained: How to Manage External Access to Your Services

install docker ce on debian 12

How to Install Docker CE on Debian 12

install docker ce

Install Docker CE on Ubuntu 20.04

role-based access control in kubernetes

Introduction to Role-Based Access Control (RBAC) in Kubernetes

install portainer on Linux

Install Portainer on Rocky Linux

docker hardened images

Why Docker Hardened Images Are a Game-Changer for Software Supply Chain Security

Security

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

Install GVM Vulnerability Scanner on Ubuntu 24.04

Install Zeek on Ubuntu 20.04

Most Popular

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HowTos

Install Microsoft Teams App on Fedora 32/31/30

Install and Setup OCS NG Inventory Server
HowTos, Asset Management, OCS Inventory

Install OCS Inventory Agent on Ubuntu 22.04|20.04|18.04

Bug Tracker, HowTos

Install Mantis Bug Tracker on Debian 10

install haproxy on ubuntu
HowTos, HAProxy, Load Balancers

Install and Configure HAProxy on Ubuntu 24.04

Mastering Kubernetes Autoscaling: Horizontal vs Vertical Scaling
Kubernetes, Containers, HowTos

Mastering Kubernetes Autoscaling: Horizontal vs Vertical Scaling

Ubuntu 20.04, HowTos, OS

Install NetBeans IDE on Ubuntu 20.04

How to Perform System Security Auditing with Lynis on Ubuntu 18.04

Top 10 Colleges with Cyber Security Programs

Install OSSEC HIDS Agent on Ubuntu 20.04

Monitor Changes to Critical Files on Windows Systems using Wazuh and ELK

How to Install Outline VPN on Linux Systems

Install and Setup Lynis Security Auditing tool on Ubuntu 20.04

Install and Setup Nessus Scanner on Ubuntu 20.04

Install MISP on Ubuntu 24.04/Ubuntu 22.04/Ubuntu 20.04

Setup OpenVPN Server on Rocky Linux 8

Check SSL Certificate Expiry Date from Certificate File

How to Enable Ping response On IBM QRadar SIEM

Install Kismet on Ubuntu 18.04

MONITORING

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Configure Nagios Email Notification Using Gmail

Configure Nagios Email Notification Using Gmail

koromicha

This guide will take you through how to configure Nagios Email Notification using Gmail. Nagios …

Install Fleet Osquery Manager on Debian 10

Install Fleet Osquery Manager on Rocky Linux

koromicha

In this tutorial, you will learn how to install Fleet osquery manager on Rocky Linux. …

Configure ELK Stack Alerting with ElastAlert

Configure ELK Stack Alerting with ElastAlert

gen_too

Welcome to our tutorial on how to configure ELK Stack alerting with ElastAlert. As much …

Setup Multi-node Elasticsearch Cluster

How to Setup Multinode Elasticsearch 9 Cluster

Kifarunix

Follow through this tutorial to learn how to setup multinode Elasticsearch 9 cluster. As of …

Install and Configure Prometheus on CentOS 8

koromicha

Welcome to our guide on how to install and configure Prometheus on CentOS 8. Prometheus …

Monitor Changes to Critical Files on Windows Systems using Wazuh and ELK

Monitor Changes to Critical Files on Windows Systems using Wazuh and ELK

gen_too

In this tutorial, you will learn how to monitor changes to critical files on Windows …

install icinga2/icingaweb2

How to Install Icinga 2 and Icinga Web 2 on Ubuntu 18.04 LTS

koromicha

In this tutorial, we are going to learn how to install Icinga 2 and Icinga …

Monitor Squid logs with Grafana and Graylog

koromicha

In this guide, we are going to learn how to monitor squid logs with Grafana …

Monitor Squid Access Logs with Graylog Server

koromicha

Welcome to our tutorial on how to monitor squid access logs with Graylog server. Graylog is …

Generate Wildcard SSL Certificates for Elasticsearch

Generate Wildcard SSL Certificates for Elasticsearch

Kifarunix

Is there an easy way to generate wildcard SSL certificates for Elasticsearch? Yes, definitely. The …

enroll Windows systems into Osquery Fleet Manager

Enroll Windows Systems into Osquery Fleet Manager

Welcome to our guide on how to enroll Windows systems into Osquery Fleet Manager. Fleet is the most widely used open …
Install Wazuh Agent on RHEL

How to Install Wazuh Agent on RHEL 8/9/10

In this tutorial, you will learn how to install Wazuh agent on RHEL 8/9/10. Our previous setup was on setting …

Fix AlienVault HIDS Events Displaying 0.0.0.0 as IP Address

In this guide, we are going to show you how to fix AlienVault HIDS events displaying 0.0.0.0 as IP address. …

NETWORKING

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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 …
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 …

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 …
Securing OpenShift Networking with Network Policies: Default Deny, Cross-Namespace Rules, and Egress Filtering

Securing OpenShift Networking with Network Policies: Default Deny, Cross-Namespace Rules, and Egress Filtering

Securing OpenShift networking with network policies is one of the most critical steps in moving from a flat, permissive cluster …
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, …
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 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 …
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 …
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 …
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 …
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

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 …

STORAGE

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Setup Software RAID on Rocky Linux 8

Setup GlusterFS Distributed Replicated Volume on CentOS 8

Configuring Shared Filesystem for Kubernetes on Rook Ceph Storage

Backup Windows System with BackupPC Using Rsyncd

Extend OpenShift CoreOS /sysroot Root Filesystem

Install and Setup GlusterFS on Ubuntu 18.04

Part 3: Integrate OpenStack with Ceph Storage Cluster

Provision Block Storage for Kubernetes on Rook Ceph Cluster

VIRTUALIZATION

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Install VirtualBox Guest Additions on Ubuntu 20.04

koromicha

If you have installed Ubuntu 20.04 on VirtualBox, you realize that it is not in …

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 …

install portainer on Linux

Install Portainer on Rocky Linux

koromicha

In this tutorial, you will learn how to install Portainer on Rocky Linux. Portainer is a …

kvm and terraform

Automate Virtual Machine Creation on KVM with Terraform

Kifarunix

In this tutorial, you will learn how to automate Virtual Machine creation on KVM with …

Install Ubuntu 24.04 on VirtualBox

Install Ubuntu 24.04 on VirtualBox

Kifarunix

This guide will take you through how to install Ubuntu 24.04 on VirtualBox. Ubuntu 24.04, …

bullseye 11

Install Debian 11 on VirtualBox

gen_too

Follow through this tutorial to learn how to install Debian 11 on VirtualBox. The Debian …

Screenshot from 2021 01 13 22 50 51 1

Install VirtualBox 6.1 on Fedora 33

kaptotonindet

In this tutorial, you will learn how to install VirtualBox 6.1 on Fedora 33. VirtualBox …

deploy OpenStack using DevStack on Ubuntu 22.04/Ubuntu 20.04

Deploy OpenStack using DevStack on Ubuntu 22.04/Ubuntu 20.04

koromicha

In this tutorial, you will learn how to deploy OpenStack using DevStack on Ubuntu 22.04/Ubuntu …

Install KVM on Debian 12

Install KVM on Debian 12

Kifarunix

In this tutorial, you will learn how to install KVM on Debian 12. KVM, an …

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 …

List Running and Stopped VMS on KVM

List Running and Stopped VMS on KVM

Follow through this guide to learn how to list running and stopped vms on KVM. KVM, an acronym for Kernel-based …

Install Debian 10 Buster on VirtualBox

In this guide, we are going to learn how to install Debian 10 Buster on VirtualBox. Debian 10 Buster has …
AutoStart VirtualBox VMs on System Boot on Linux

AutoStart VirtualBox VMs on System Boot on Linux

In this guide, we are going to learn how to autostart VirtualBox VMs on system boot on Linux. On a …

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