HowTos, NTP, ntpd

Setup NTP server Using NTPd on Debian 10 Buster

BY
koromicha
HowTos, Ansible, Automation, Monitoring, Nagios

Deploy Nagios NRPE Agents using Ansible

Security, HowTos, modsecurity

Intercept Malicious File Upload with ModSecurity and ClamAV

OpenStack, Ansible, Automation, Cloud Compute, Containers, Docker, HowTos, Virtualization

Deploy All-in-One OpenStack with Kolla-Ansible on Ubuntu 22.04

HowTos, Remote Desktop

Install and Setup Chrome Remote Desktop on Ubuntu 18.04

Containers

More
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, …
automate tasks in OpenShift with Kubernetes jobs and cron jobs

Automate Tasks in OpenShift with Kubernetes Jobs and Cron Jobs: A Practical Guide

In this guide, we’ll explore how to set up and automate tasks in OpenShift with Kubernetes jobs and cron jobs. …
install docker ce

Install and Use Docker CE on CentOS 8

Welcome to our guide on how to install and use docker ce on CentOS 8. Docker is a platform that enables …
Kubernetes Architecture: A High-level Overview of Kubernetes Cluster Components

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

monitor Docker containers metrics using Grafana

Monitor Docker Containers Metrics using Grafana

Install Portainer Extension on Docker Desktop

Install Portainer Extension on Docker Desktop

Kubernetes Ingress Explained

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

Kubernetes cluster high availability

Setup Highly Available Kubernetes Cluster with Haproxy and Keepalived

Deploy ELK Stack 8 Cluster on Docker using Ansible

Deploy ELK Stack 8 Cluster on Docker using Ansible

How to Configure Centralized Logging in OpenShift with LokiStack and ODF

How to Configure Centralized Logging in OpenShift with LokiStack and ODF

Monitor Docker Swarm and Container metrics using Metricbeat

Monitor Docker Swarm and Container metrics using Metricbeat

Creating Users in Kubernetes

Kubernetes User Management: Creating Users, Groups and Service Accounts

Configure CloudBees CI High Availability for Managed Controllers on OpenShift

How to Configure CloudBees CI High Availability for Managed Controllers on OpenShift

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

Part 3: How to Restore and Validate Application Backups in OpenShift with OADP

Configure OpenShift 4 Image Registry Persistent Storage with ODF

Configure OpenShift 4 Image Registry Persistent Storage with ODF: 2026 Step-by-Step Guide

Install Fedora CoreOS on KVM Using an ISO File

Install Fedora CoreOS on KVM Using an ISO File: A Step-by-Step Guide

kubernetes states: declared vs actual state

Understanding Kubernetes States: Declared vs Observed states Explained

Backup and Restore etcd in OpenShift 4 with Automated Scheduling & S3 Storage Integration

Backup and Restore etcd in OpenShift 4 with Automated Scheduling & S3 Storage Integration

kubernetes kubeconfig

What is Kubeconfig File in a Kubernetes Cluster?

Security

More

Setup Secure SSH Access on Linux Servers using Teleport

What You Can Do to Get Work as a Security Guard

Install WPScan on Ubuntu 20.04

Most Popular

More
install and setup openvpn server in Linux
Security, HowTos, OpenVPN, VPN

Step-by-Step Guide: Install and Setup OpenVPN Server on Ubuntu 22.04

HowTos, Networking, OpenVPN

Install and Setup OpenVPN Server on Fedora 29/CentOS 7

Install OpenNMS Network Monitoring tool on Ubuntu 20.04
Monitoring, HowTos

Install OpenNMS Network Monitoring tool on Ubuntu 20.04

velociraptor
Security, HowTos

Install and Setup Velociraptor on Debian 10

Install PostgreSQL 15 on Debian 12
HowTos, Database

Install PostgreSQL 15 on Debian 12

install haproxy on ubuntu
HowTos, HAProxy, Load Balancers

Install and Configure HAProxy on Ubuntu 24.04

WordPress: Fix Updating failed. The response is not a valid JSON response

Install WireGuard VPN Server on Ubuntu 24.04

6 Little-Known Things You Can Do With a VPN

How to Integrate TheHive with MISP

What You Can Do to Get Work as a Security Guard

Setup OpenVPN Server on CentOS 8

Install Cortex on Ubuntu 22.04/Ubuntu 20.04

Import Saved Passwords From Firefox to Chrome on Ubuntu 18.04

Install Osquery on Ubuntu 20.04

Install Wazuh Agent on pfSense

Configure Nginx with SSL/TLS certificates on CentOS 8

Configure APT Proxy on Debian 10 Buster

MONITORING

More
Install OSSEC HIDS Agent

Install OSSEC Agent on CentOS 8

koromicha

This guide presents a step-by-step tutorial on how to install OSSEC Agent on CentOS 8. …

auditbeat 1

Detect Changes to Critical Files in Linux using Auditbeat and ELK

gen_too

In this tutorial, you will learn how to detect changes to critical files in Linux …

Install OpenNMS Network Monitoring tool on Ubuntu 20.04

Install OpenNMS Network Monitoring tool on Ubuntu 20.04

koromicha

Follow through the guide to install OpenNMS network monitoring tool on Ubuntu 20.04. OpenNMS is …

Install and Configure Zabbix

Add Hosts to Zabbix Server for Monitoring

koromicha

This guide will take you through how you can be able to add hosts to …

Install and Setup Nagios

Install Nagios Server on CentOS 8

koromicha

In this guide, you will learn how to install Nagios Server on CentOS 8. Nagios provides …

Install Wazuh SIEM Server on RHEL 9/RHEL 10

How to Install Wazuh SIEM Server on RHEL 9/RHEL 10

Kifarunix

In this tutorial, you will learn how to install Wazuh SIEM server on RHEL 9/RHEL …

install and configure snmp on Linux

Install and Configure SNMP on Debian 10 Buster

koromicha

This guide will take you through how to install and configure SNMP on Debian 10 …

Install Logstash 7 on Fedora 30/Fedora 29/CentOS 7

Install Logstash 8 on Ubuntu/Debian

koromicha

This guide is about how to install and configure Logstash 8 on Ubuntu/Debian as a …

Install and Configure Tripwire Security Monitoring tool on CentOS 8

Jay Decrame

In this tutorial, you will learn how to install and configure Tripwire security monitoring tool …

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 …

Install Monitorix on Ubuntu 20.04

How to Install Monitorix on CentOS 8

In this guide, we are going to learn how to install Monitorix on CentOS 8. Monitorix is an open source, system monitoring …
docker elk

Deploy a Single Node ELK Stack Cluster on Docker Containers

How to run ELK stack on Docker? In this tutorial, we are going to learn how to deploy a single …
Install TheHive on Ubuntu 22.04/Ubuntu 20.04

Install TheHive on Ubuntu 22.04/Ubuntu 20.04

Follow through this tutorial to learn how to install TheHive on Ubuntu 22.04/Ubuntu 20.04 server. TheHive, according to their documentation …

NETWORKING

More
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 …
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 …
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 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 …
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 …
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 …
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 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 …
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 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 …
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 …
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, …

STORAGE

More

Setup Replicated GlusterFS Volume on Ubuntu

Deploy Ceph Storage Cluster in Kubernetes using Rook

Install ownCloud Desktop Client on CentOS 8

Install and setup GlusterFS on Ubuntu 22.04/Ubuntu 20.04

How to Upgrade ownCloud 9 to ownCloud 10 on Ubuntu 16.04

Install ownCloud Server on Debian 10 Buster

Configure and Use Ceph Block Device on Linux Clients

Install ownCloud Desktop Client on Ubuntu 20.04

VIRTUALIZATION

More
Install VirtualBox Guest Additions on AlmaLinux

Install VirtualBox Guest Additions on AlmaLinux

Kifarunix

Follow through this tutorial to learn how to install VirtualBox guest additions on AlmaLinux. We …

shrink KVM virtual machine LVM partitioned disk

Shrink KVM Virtual Machine LVM Partitioned Disk

Kifarunix

Is it possible to shrink KVM virtual machine LVM partitioned disk? Well, to be honest, …

Install VirtualBox Guest Additions on Ubuntu 21.04

Install VirtualBox Guest Additions on Ubuntu 21.04

koromicha

If you have installed Ubuntu 21.04 on VirtualBox, you realize that it is not in …

kali linux 2021.3 desktop

Install Kali Linux 2020.3 on VirtualBox

koromicha

In this tutorial, you will learn how to install Kali Linux 2020.3 on VirtualBox. Kali …

Install VirtualBox 7 on Debian 12 Desktop

Install VirtualBox 7 on Debian 12

Kifarunix

This guide will take you through how to install VirtualBox 7 on Debian 12. VirtualBox …

Install KVM on Oracle Linux

Install KVM on Oracle Linux

koromicha

In this tutorial, you will learn how to install KVM on Oracle Linux. KVM, an …

Install Kali Linux 2022.2 on VirtualBox

Install Kali Linux 2022.2 on VirtualBox

koromicha

In this tutorial, you will learn how to install Kali Linux 2022.2 on VirtualBox. Kali Linux is …

kali linux 2021.3 desktop

Upgrade Kali Linux 2021.3 to 2021.4

koromicha

Learn how to upgrade Kali Linux 2021.3 to 2021.4. Kali Linux 2021.4 has just been …

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 …

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 …

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 …
Install Rocky Linux 9 on VirtualBox

Install Rocky Linux 9 on VirtualBox

In this tutorial, you will learn on how to easily install Rocky Linux 9 on VirtualBox. With Rocky Linux 9 …

How to Clone a Virtual Machine on VMware ESXi

Having trouble with cloning a virtual machine in VMware ESXi? Worry no more. This guide will take you through how …

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