HowTos

Configure Postfix to Use Gmail App Passwords

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koromicha
HowTos, Database, FreeBSD, MariaDB, MySQL, Nginx, PHP, phpMyAdmin, Web Servers

Install FEMP Stack on FreeBSD 12

HowTos, Phishing, Security

Install Gophish on Ubuntu 18.04/Debian 9.8

HowTos, Monitoring, Zabbix

Install Zabbix Server on Debian 10 Buster

HowTos, NTP, ntpd

Setup NTP server Using NTPd on Debian 10 Buster

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 …
OpenBao Kubernetes Auth on OpenShift: Eliminate Static Secrets from Your Workloads

OpenBao Kubernetes Auth on OpenShift: Eliminate Static Secrets from Your Workloads

If your OpenShift workloads are still reading database passwords from Kubernetes Secrets that someone base64 -w0‘d into a YAML manifest …
Scale OpenShift Data Foundation Storage on Bare Metal

ODF Ceph Storage Full: Recover and Expand OpenShift Data Foundation Storage on Bare Metal

In this guide, you will learn how to recover and expand OpenShift Data Foundation storage on bare metal from diagnosing …
deploy WordPress using Docker compose

Deploy WordPress using Docker Compose

Configuring Shared Filesystem for Kubernetes on Rook Ceph Storage

Configuring Shared Filesystem for Kubernetes on Rook Ceph Storage

Deploy OpenBao on OpenShift with HA Raft, TLS, and Static Key Auto-Unseal: No Cloud KMS Needed

Deploy OpenBao on OpenShift with HA Raft, TLS, and Static Key Auto-Unseal: No Cloud KMS Needed

How to Configure Centralized Logging in OpenShift with LokiStack and ODF

How to Configure Centralized Logging in OpenShift with LokiStack and ODF

Quickly Install MySQL 8 on Debian 12

Quickly Install MySQL 8 on Debian 12

kubernetes kubeconfig

What is Kubeconfig File in a Kubernetes Cluster?

OpenBao Kubernetes Auth on OpenShift: Eliminate Static Secrets from Your Workloads

OpenBao Kubernetes Auth on OpenShift: Eliminate Static Secrets from Your Workloads

kubernetes states: declared vs actual state

Understanding Kubernetes States: Declared vs Observed states Explained

kubernetes drain vs cordon nodes

Kubernetes Nodes Maintenance: Drain vs. Cordon Demystified

Install Kubernetes Dashboard on Ubuntu

Easy Way to Install Kubernetes Dashboard on Ubuntu 22.04/20.04

How to Deploy WordPress as a Docker Container

How to Deploy WordPress as a Docker Container

Kubernetes cluster high availability

Setup Highly Available Kubernetes Cluster with Haproxy and Keepalived

Install Metrics Server on Kubernetes

Install Kubernetes Metrics Server on a Kubernetes Cluster

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

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

How to Install Docker Resource Usage Extension

How to Install Docker Resource Usage Extension

using configmaps in kubernetes

Step-by-Step Guide to Using ConfigMaps in Kubernetes

Security

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Install and Setup OpenVAS 9 Vulnerability Scanner on Ubuntu 18.04

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

Install GVM 21.04 on Rocky Linux 8

Most Popular

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Sending Multiple Messages at Once: Top Tech Tips to Help You Understand the Process
HowTos

Sending Multiple Messages at Once: Top Tech Tips to Help You Understand the Process

squid proxy
Security, HowTos

Install and Setup Squid Proxy on Debian 11/10

basic auth 1
HowTos, Apache, Web Servers

Configure LDAP Based HTTP Basic Authentication

bitwarden
HowTos, Security

Install Bitwarden Password Manager on Ubuntu 22.04

Install Filebeat on FreeBSD
Monitoring, Elastic Stack, FreeBSD, HowTos

Install Filebeat on FreeBSD

Configuring Shared Filesystem for Kubernetes on Rook Ceph Storage
HowTos, Ceph, Containers, Kubernetes, Storage

Configuring Shared Filesystem for Kubernetes on Rook Ceph Storage

How to Enable Basic Authentication on ELK Stack

Install OSSEC Agent on CentOS 8

Install Bitwarden Password Manager on Ubuntu 22.04

Install Fleet Osquery Manager on Ubuntu 20.04/Ubuntu 22.04

Install and Setup Lynis Security Auditing tool on CentOS 8

Basic Operation of Firewalld in Linux

Visualize ClamAV Scan Logs on ELK Stack Kibana

Essential Cybersecurity Measures for Small Businesses

Enforce Password Complexity Policy On Ubuntu 18.04

Integrate sysPass with OpenLDAP for Authentication

How to Install OSSEC Agent on Mac OS

Windows Server Security Essentials from Experienced System Administrators

MONITORING

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Install Sensu Go Ubuntu/debian/rocky

Install Sensu Go on Ubuntu 22.04

koromicha

In this tutorial to learn how to install Sensu Go on Ubuntu 22.04. Sensu is …

Install OSSEC Agent on Solaris

How to Install OSSEC Agent on Solaris 11.4

koromicha

In this tutorial, we are going to learn how to install OSSEC agent on Solaris …

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

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

Kifarunix

In this blog post, we will run through how to set up alerting in OpenShift …

Install GoAccess on Ubuntu 18.04/Debian 10 Buster

koromicha

In this guide, we are going to learn how to install GoAccess on Ubuntu 18.04/Debian …

Install Nagios Core on Debian 10 Buster

koromicha

In this guide, we are going to learn how to install Nagios Core on Debian …

Monitor Linux Hosts using Nagios check_by_ssh Plugin

Monitor Linux Hosts using Nagios check_by_ssh Plugin

koromicha

Welcome to our tutorial on how to monitor Linux Hosts using Nagios check_by_ssh plugin. This …

Backup and Restore Elasticsearch Index Data

Backup and Restore Elasticsearch Index Data

gen_too

In this blog post, you will learn how to backup and restore Elasticsearch Index data. …

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 Zabbix

Install Zabbix 4.x from Sources on Debian 10 Buster

koromicha

Welcome again to our yet another guide on how to install Zabbix 4.x from sources …

Configure Filebeat 8 to Write Logs to Specific Index

Configure Filebeat 8 to Write Logs to Specific Index

Kifarunix

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

How to Install Osquery on Ubuntu 18.04

In this guide, we are going to learn how to install osquery on Ubuntu 18.04. Osquery is an opensource tool …
Install OSSEC HIDS Agent

Install and Setup OSSEC agent on Ubuntu 18.04/CentOS 7

In this guide, we are going to learn how to install and configure OSSEC agent on Ubuntu 18.04/CentOS 7. OSSEC …
Process and Visualize ModSecurity Logs on ELK Stack

Visualize ClamAV Scan Logs on ELK Stack Kibana

In this tutorial, you will learn how to visualize ClamAV scan logs on ELK stack Kibana. ClamAV is an opensource …

NETWORKING

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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 …
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 …
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 …
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 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 …
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 …
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, …
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 …

STORAGE

More

Configuring Shared Filesystem for Kubernetes on Rook Ceph Storage

Install ownCloud Server on Ubuntu 22.04

How to Upgrade ownCloud 9 to ownCloud 10 on Ubuntu 16.04

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

Part 3: Integrate OpenStack with Ceph Storage Cluster

How to Move Linux OS Installation to Another Drive

Create LVM Logical Volumes in Linux

ODF Ceph Storage Full: Recover and Expand OpenShift Data Foundation Storage on Bare Metal

VIRTUALIZATION

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Install Rocky Linux 9 on VirtualBox

Install Rocky Linux 9 on VirtualBox

koromicha

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

Install Debian 10 Buster on VirtualBox

koromicha

In this guide, we are going to learn how to install Debian 10 Buster on …

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 …

kali linux 2021.3 desktop

Install VirtualBox Guest Additions on Kali Linux 2020.3

koromicha

In order to set your Kali Linux running on VirtualBox in fullscreen mode, you need …

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 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 Linux Mint 21

Install VirtualBox Guest Additions on Linux Mint 21

Kifarunix

Follow through this tutorial to learn how you can easily install VirtualBox guest additions on …

deploy HAProxy as a Docker container

Deploy HAProxy as a Docker Container

gen_too

Follow through this tutorial to learn how to deploy HAProxy as a Docker container. HAProxy …

bullseye 11

Install Debian 11 on VirtualBox

gen_too

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

genymotion login

Install Genymotion Android Emulator on Ubuntu 20.04

gen_too

Follow through this guide to learn how to install Genymotion Android emulator on Ubuntu 20.04. …

kali linux 2021.3 desktop

Upgrade Kali Linux 2021.3 to 2021.4

Learn how to upgrade Kali Linux 2021.3 to 2021.4. Kali Linux 2021.4 has just been released. According to the release …

Install Ubuntu 20.04 on VirtualBox

Follow through this guide to learn how to install Ubuntu 20.04 on VirtualBox. Well, Ubuntu 20.04 is the next major …
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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