HowTos, Ceph, Storage

Install and Setup Ceph Storage Cluster on Ubuntu 20.04

BY
koromicha
Kubernetes, Containers, HowTos

Assign Roles to Users and Groups in Kubernetes Cluster

HowTos

Create Your First Digital Business: 7 Technical Tips to Follow

HowTos

Install NetBeans IDE on Debian 10

Monitoring, HowTos, Nagios

Install Nagios NRPE Agents on Debian 11/Debian 10

Containers

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backup and restore kubernetes etcd cluster

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

In this blog post, we will dive into Kubernetes disaster recovery strategies, backup and restore etcd, using etcdctl and etcdutl …
Connect to Remote Docker Environment on Docker Desktop

Connect to Remote Docker Environment on Docker Desktop

Can docker Desktop connect to remote host? Yes. Follow through this guide to learn how to connect to Remote Docker …
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

In this guide, you will learn how to restore and validate application backups in OpenShift with OADP. This is Part …
kubernetes states: declared vs actual state

Understanding Kubernetes States: Declared vs Observed states Explained

upgrade openshift 4

How to Upgrade OpenShift Cluster: Seamless Steps for Success

Setup Portainer with SSL Certificates

Setup Portainer with SSL Certificates

automate OpenShift Deployments with GitLab CI/CD pipelines

Automate OpenShift Deployments with GitLab CI/CD Pipelines

Patch Sudo CVEs 2025-32462 & 2025-32463 using Ansible AWX

Patch Sudo CVEs 2025-32462 & 2025-32463 using Ansible AWX

openstack on ubuntu 24.04

Install OpenStack on Ubuntu 24.04 using Kolla Ansible

Deploy NRPE Agent as a Docker container

Deploy NRPE Agent as a Docker Container

Mastering Kubernetes Autoscaling: Horizontal vs Vertical Scaling

Mastering Kubernetes Autoscaling: Horizontal vs Vertical Scaling

Configure CloudBees CI High Availability for Managed Controllers on OpenShift

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

Gracefully Remove Worker Node from Kubernetes Cluster

Gracefully Remove Worker Node from Kubernetes Cluster

Install Fedora CoreOS on KVM Using an ISO File

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

kubernetes drain vs cordon nodes

Kubernetes Nodes Maintenance: Drain vs. Cordon Demystified

Kubernetes Kustomize 101: Introduction and Basics

Kubernetes Kustomize 101: Introduction and Basics

install portainer on Linux

Install Portainer on Ubuntu 22.04

deploy multinode OpenShift cluster using UPI

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

Assign Roles to Users and Groups in Kubernetes Cluster

Assign Roles to Users and Groups in Kubernetes Cluster

Security

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Easily Install ModSecurity with Apache on Rocky Linux 8

Install ModSecurity 3 with Apache in a Docker Container

Install and Setup Passbolt Password Manager on Ubuntu 20.04

Most Popular

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upgrade single package ubuntu
Linux Commands, HowTos

Upgrade a Single package on Ubuntu

How to Integrate ELK Stack with TheHive
HowTos, Monitoring, Security

How to Integrate ELK Stack with TheHive

Backup and Restore Elasticsearch Index Data
Elastic Stack, Monitoring

Restore Elasticsearch Snapshot to another Cluster

6 Facts You Should Know About Global Cloud Communications
HowTos

6 Facts You Should Know About Global Cloud Communications

HowTos

How to Install Programs from Source on Ubuntu 18.04

HowTos, Security, Ubuntu 18.04

Import Saved Passwords From Firefox to Chrome on Ubuntu 18.04

Install ClamAV on Debian 11

How to Install and Setup GRR clients on Ubuntu 18.04/Debian 9

Install reNgine on Ubuntu 20.04|Ubuntu 18.04

Install ModSecurity with Apache on Debian 12

How to Scan a Remote Host using Nessus Vulnerability Scanner

Install and Setup VeraCrypt on Linux Mint 21

Install and Setup Suricata on CentOS 8

List  of top 10 Tips to Protect your Privacy Online

Easily Install ModSecurity with Apache on Rocky Linux 8

Configure Availability Monitoring on AlienVault USM/OSSIM using Nagios

Install LibModsecurity with Apache on Ubuntu 18.04

What Should Companies Do To Increase IT Safety

MONITORING

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Install Kubernetes Dashboard on Ubuntu

Easy Way to Install Kubernetes Dashboard on Ubuntu 22.04/20.04

Kifarunix

This step-by-step guide provides an easy way to install Kubernetes dashboard on Ubuntu 22.04/20.04. Installing …

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

How to Debug Logstash Grok Filters

Jay Decrame

Welcome to our guide on how to debug Logstash Grok filters. Grok filter uses regular …

Configure Filebeat 8 to Write Logs to Specific Data Stream

Configure Filebeat 8 to Write Logs to Specific Data Stream

Kifarunix

This guide will take you through how to configure Filebeat 8 to write logs to …

Install Prometheus on Linux

How to Install Prometheus on Ubuntu 24.04

Kifarunix

In this guide, you will learn how to install Prometheus on Ubuntu 24.04. Prometheus is an open-source …

Install and Configure Zabbix

Install Zabbix Server on Ubuntu 22.04

koromicha

In this guide, we are going to learn how to install Zabbix server on Ubuntu …

install sensu agent ubuntu/debian

Install Sensu Agent on Rocky Linux

koromicha

This guide will take you through how to install Sensu agent on Rocky Linux systems. …

Install and Setup TIG Stack on Ubuntu 20.04

gen_too

In this tutorial, we are going to learn how to install and setup TIG Stack …

Monitor Docker Swarm Node Metrics using Grafana

Monitor Docker Swarm Node Metrics using Grafana

Kifarunix

How can I monitor Docker swarm node metrics? In this tutorial, you will learn how …

Install Monitorix on Ubuntu 20.04

How to Install Monitorix on CentOS 8

koromicha

In this guide, we are going to learn how to install Monitorix on CentOS 8. Monitorix is …

How to Copy Kibana Dashboard to Another Kibana Space

How to Copy Kibana Dashboard to Another Kibana Space

koromicha

Is it possible to copy Kibana dashboard to another Kibana Space? Yes, definitely. In this …

install icinga2/icingaweb2

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

In this tutorial, we are going to learn how to install Icinga 2 and Icinga Web 2 on Ubuntu 18.04 …
nagios nrpe

Install Nagios NRPE Agent on Rocky Linux 8

Follow through this guide to learn how to install Nagios NRPE agent on Rocky Linux 8. In order to execute Nagios plugins …
Setup Multi-node Elasticsearch Cluster

How to Setup Multinode Elasticsearch 9 Cluster

Follow through this tutorial to learn how to setup multinode Elasticsearch 9 cluster. As of this writing, Elastic Stack 9.0 …

NETWORKING

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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

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 …
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, …
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 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 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 …
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 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 …
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 …
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 …
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 …

STORAGE

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Configure and Use Ceph Block Device on Linux Clients

Install and Configure BackupPC on Debian 10

Provision Block Storage for Kubernetes on Rook Ceph Cluster

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

Backup Windows System via SMB Using BackupPC

How Install and Configure iSCSI Storage server on CentOS 7

Extend OpenShift CoreOS /sysroot Root Filesystem

VIRTUALIZATION

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How to Create And Delete OpenStack Project

How to Create And Delete OpenStack Project

koromicha

In this blog post, we’ll provide a step by step tutorial on how to create …

Install VirtualBox Guest Additions on Debian 10 Buster

koromicha

So if you have installed Debian 10 Buster on VirtualBox, you might have realized that …

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 …

Create and Upload Custom Linux Image into OpenStack

Create and Upload Custom Linux Image into OpenStack

koromicha

In this tutorial, you will learn how to create and upload custom Linux image into …

Easy Way to Extend KVM Virtual Machine Disk Size

Easy Way to Extend KVM Virtual Machine Disk Size

kaptotonindet

This is a simple tutorial on an easy way to extend KVM virtual machine disk …

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 …

install kvm on ubuntu

How to Install KVM on Ubuntu 24.04

Kifarunix

In this tutorial, you will learn how to install KVM on Ubuntu 24.04. KVM (Kernel-based …

Install and Configure Endian Firewall on VirtualBox

Install and Configure Endian Firewall on VirtualBox

koromicha

Welcome to our guide on how to install and configure Endian Firewall on VirtualBox. Endian …

upgrade virtualbox 6.0 6.1

Upgrade VirtualBox 6.0 to 6.1 on Ubuntu Systems

koromicha

With the release of VirtualBox 6.1 and its new major features, you should be planning …

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 …

Install Ubuntu 21.04 Desktop on VirtualBox

Install Ubuntu 21.04 Desktop on VirtualBox

In this tutorial, you learn how to install Ubuntu 21.04 Desktop on VirtualBox. The latest stable release of Ubuntu, Ubuntu …
Easy Way to Extend KVM Virtual Machine Disk Size

Easy Way to Extend KVM Virtual Machine Disk Size

This is a simple tutorial on an easy way to extend KVM virtual machine disk size. Disk usage in a …
upgrade virtualbox 6.0 6.1

Upgrade VirtualBox 6.0 to 6.1 on Ubuntu Systems

With the release of VirtualBox 6.1 and its new major features, you should be planning to upgrade your VirtualBox 6.0. …

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