Shell

• Command to rename all files in a directory in numerical sequence
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Monit
• Switching from Windows to Linux Ubuntu

Security

• A Practical Guide To Basic WordPress Security
• Digital Security Threats in 2017
• How To Configure PAM (Pluggable Authentication Modules)
• How To Configure Wireguard
• How To Install fail2ban
• How To Install LUKS on LVM
• How To Obtain An SSL Certificate From Lets Encrypt
• How to Password Protect a Folder into a Compressed Password Protected Archive File
• How To Secure WordPress Against Brute Force Password Attacks
• How to Secure Your Laptop
• How To Set Up An SSH Reverse Tunnel
• Important Google Authenticator App 2FA Action when Summertime Changes!
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson APCUPSD
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Monit
• Renewing SSL Certificates for Apache Virtual Domains
• Setting Up a VPN Network Using Zerotier-One
• SSH Reverse Tunnel - A Practical Example - Public Internet Server to Client Laptop on NAT WiFi
• SSH Security Hardening Notes
• SSL Certificate Renewal Using Lets Encrypt and Certbot
• Using Metasploit for System Penetration Testing and Security Hardening
• What is Shellshock?
• Your Computer Security - Or Why You Should Escape From PRISM
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Storage

• Configuring NFS
• Einführung in das Thema RAID (auf Deutsch)
• How To Backup Your Website
• How To Configure ISCSI Target Server
• How To Configure The ISCSI Client Initiator
• How To Create a dm-crypt LUKS Volume Without LVM
• How To Install LVM
• Installing and Configuring NFS
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: GlusterFS
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: GlusterFS Configuration on Ubuntu
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Basic Ceph Installation and Config
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph CRUSH Map
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph RDB Block Devices
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph RGW Gateway
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Pools & Placement Groups
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson SMARTMONTOOLS
• LPIC3-306 COURSE NOTES: GlusterFS
• LPIC3-306 COURSE NOTES: CEPH - An Overview
• MDADM RAID Commands
• RAID10 Lab: RAID Setup and Disk Failure Simulation
• RAID50 Lab: Creating a RAID50 Using MDADM
• ZFS: Installing & Configuring ZFS on CentOS
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Virtualization

• How To Configure KVM Virtualization on Ubuntu v20.04 Hosts
• How To Create a dm-crypt LUKS Volume Without LVM
• How to Install and Use KVM libvirt on Ubuntu
• How To install Cluster Fencing Using Libvert on KVM Virtual Machines
• How To Resolve Oracle VirtualBox error : kernel driver not installed(rc=-1908)
• How To Set Static or Permanent IP Addresses for Virtual Machines in KVM
• Installing Docker on Ubuntu
• Introduction to cloud-init
• Setting up NAT Networking on Oracle Virtualbox on CentOS
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Web Server

• How To Automate the Replication of a WordPress System from an Online Server to an Offline  Localhost Domain
• How To Create an HTML Flatfile Instance of a Website
• How To Install Apache2 on Linux Ubuntu
• How To Install PHP on Linux Ubuntu
• How To Install PHPMyAdmin
• How to Install the SSLH Multiplexer
• How To Install WordPress Plugins On Your Website
• How To Install WordPress WP-CLI (command line interface)
• How To Obtain An SSL Certificate From Lets Encrypt
• How To Replicate A WordPress Website From Server To Localhost
• How To Reset WordPress Permalinks Using WP-CLI
• LAMP Server Migration
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson HAProxy
• MySQL-Wordpress Problem: "Error Connecting to Database"
• SSL Certificate Renewal Using Lets Encrypt and Certbot
• The Ultimate .htaccess Apache File Guide
• Website Not Rendering Correctly (including the Wordpress Admin Dashboard)
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Networking

• Can’t ping or access devices on a Zerotier VPN
• Configuring NFS
• How to Install the SSLH Multiplexer
• How To Set Up An SSH Reverse Tunnel
• Installing and Configuring NFS
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson BGP
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Monit
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Network Bonding
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson RSTP
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson VLANs
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson VRRP
• LPIC3-306 COURSE NOTES: BGP Border Gateway Protocol
• Mounting Remote File Systems With SSHFS
• Network Speed Testing Using iperf3
• Procedure for installing a driver for the Realtek RTL8821CE wifi adapter
• Setting Up a VPN Network Using Zerotier-One
• Setting up NAT Networking on Oracle Virtualbox on CentOS
• SSH Reverse Tunnel - A Practical Example - Public Internet Server to Client Laptop on NAT WiFi
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Databases

• How To Automate the Replication of a WordPress System from an Online Server to an Offline  Localhost Domain
• How To Install MariaDB on Ubuntu 20.04 LTS
• How To Install Mysql/Mariadb
• How To Install PHPMyAdmin
• How To Install WordPress WP-CLI (command line interface)
• How To Reset WordPress Permalinks Using WP-CLI
• LAMP Server Migration
• MySQL-Wordpress Problem: "Error Connecting to Database"
• Problems Starting Mariadb/Mysql on Ubuntu 20.10 After Installing
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Desktop

• How To Access An iPhone From A Linux Device
• How To Install Brave Browser on Ubuntu
• Procedure for installing a driver for the Realtek RTL8821CE wifi adapter

Clustering

• Cluster Fencing Overview
• Configuring Cluster Resources and Properties
• Configuring SBD Cluster Node Fencing
• GlusterFS Lab on Centos7
• How To install Cluster Fencing Using Libvert on KVM Virtual Machines
• How To Install Pacemaker and Corosync on Centos
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES LESSON 14: OCFS2 (Oracle Cluster File System 2)
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Ceph on Centos8
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: GlusterFS
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: GlusterFS Configuration on Centos
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: GlusterFS Configuration on Ubuntu
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Basic Ceph Installation and Config
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph CRUSH Map
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph RDB Block Devices
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph RGW Gateway
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Pools & Placement Groups
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Network Bonding
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson VLANs
• LPIC3-306 COURSE NOTES: GlusterFS
• LPIC3-306 COURSE NOTES: CEPH - An Overview
• Overview of Multiple or Redundant Fencing
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LPIC3 Linux Cluster Labs

• LPIC3 DIPLOMA Linux Clustering - LAB NOTES LESSON 14: OCFS2 (Oracle Cluster File System 2)
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES LESSON 4 & 5: Installing Pacemaker and Corosync on SuSe
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES LESSON 6: Configuring SBD Fencing on SUSE
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES LESSON 9 DRBD on SUSE
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Ceph on Centos8
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: GlusterFS
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: GlusterFS Configuration on Ubuntu
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson - Overview of HA Load-Balancing Solutions
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson APCUPSD
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson BGP
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Basic Ceph Installation and Config
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph CRUSH Map
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph RDB Block Devices
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph RGW Gateway
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson HAProxy
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Monit
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Network Bonding
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson RSTP
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson SMARTMONTOOLS
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson VLANs
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson VRRP
• LPIC3-306 COURSE NOTES: GlusterFS
• LPIC3-306 High Availability Clustering Exam Syllabus 2021
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Ceph Cluster

• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Ceph on Centos8
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Basic Ceph Installation and Config
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph CRUSH Map
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph RDB Block Devices
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Ceph RGW Gateway
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - CephFS
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Ceph Centos7 - Pools & Placement Groups
• LPIC3-306 COURSE NOTES: CEPH - An Overview
Show all articles ( 5 ) Collapse Articles

ISCSI

• How To Configure ISCSI Target Server
• How To Configure The ISCSI Client Initiator

VLANs

• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson VLANs

UPS

• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson APCUPSD

Load Balancing

• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson - Overview of HA Load-Balancing Solutions
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson HAProxy

Routing

• How To Connect To The DN42 BGP Global Test Network
• How To Install Quagga
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson BGP
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson RSTP
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson VRRP
• LPIC3-306 COURSE NOTES: BGP Border Gateway Protocol
Show all articles ( 3 ) Collapse Articles

Monitoring

• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Monit
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson SMARTMONTOOLS
• Network Speed Testing Using iperf3

Hardware

• Procedure for installing a driver for the Realtek RTL8821CE wifi adapter

Filesystems

• Configuring NFS
• How To Access An iPhone From A Linux Device
• How To Create a dm-crypt LUKS Volume Without LVM
• Installing and Configuring NFS
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES LESSON 14: OCFS2 (Oracle Cluster File System 2)
• LPIC3-306 COURSE NOTES: GlusterFS
• Mounting Remote File Systems With SSHFS
• Using mount - - bind
• ZFS: Installing & Configuring ZFS on CentOS
Show all articles ( 6 ) Collapse Articles

Versioning

• Installing Git & Gitea

VPN

• Can’t ping or access devices on a Zerotier VPN
• How To Configure Wireguard
• Setting Up a VPN Network Using Zerotier-One

Automation

• An Overview of Puppet
• How To Automate the Replication of a WordPress System from an Online Server to an Offline  Localhost Domain
• How To Get Started With Vagrant
• How to Install Ansible on Ubuntu
• How To Install Puppet Server and Clients
• How To Install WordPress WP-CLI (command line interface)
• How To Use Puppet
• Installing Jenkins on Ubuntu
• Using Ansible - Getting Started
• Using Ansible Galaxy
• Using Ansible Molecule
• Using GitHub - Git Commands
• Using RedHat Satellite Server
• Using the gh Command with GitHub
Show all articles ( 11 ) Collapse Articles

GlusterFS

• GlusterFS Lab on Centos7
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: GlusterFS Configuration on Centos
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES: GlusterFS Configuration on Ubuntu

LAMP

• How To Automate the Replication of a WordPress System from an Online Server to an Offline  Localhost Domain
• How To Install PHPMyAdmin
• How To Install WordPress WP-CLI (command line interface)
• How To Reset WordPress Permalinks Using WP-CLI
• LAMP Server Migration
• Problems Starting Mariadb/Mysql on Ubuntu 20.10 After Installing
Show all articles ( 3 ) Collapse Articles

Emailservers

• Forwarding Email Using Postfix
• Installation and Configuration of Postfix Emailserver
• Installing Dovecot IMAP Server
• Postfix Commands
Show all articles ( 1 ) Collapse Articles

Cloud (Non-AWS)

• Introduction to cloud-init

RAID Storage

• Einführung in das Thema RAID (auf Deutsch)
• MDADM RAID Commands
• RAID10 Lab: RAID Setup and Disk Failure Simulation
• RAID50 Lab: Creating a RAID50 Using MDADM
• ZFS: Installing & Configuring ZFS on CentOS
Show all articles ( 2 ) Collapse Articles

NFS

• Installing and Configuring NFS
• NFS mounts do not work: Error message: mount: bad option
• Using mount - - bind

SSH

• How To Set Up An SSH Reverse Tunnel
• Mounting Remote File Systems With SSHFS
• SSH Reverse Tunnel - A Practical Example - Public Internet Server to Client Laptop on NAT WiFi

Pacemaker Cluster

• Cluster Fencing Overview
• Configuring Cluster Resources and Properties
• Configuring SBD Cluster Node Fencing
• How To install Cluster Fencing Using Libvert on KVM Virtual Machines
• How To Install Pacemaker and Corosync on Centos
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES LESSON 14: OCFS2 (Oracle Cluster File System 2)
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES LESSON 4 & 5: Installing Pacemaker and Corosync on SuSe
• LPIC3 DIPLOMA Linux Clustering - LAB NOTES LESSON 6: Configuring SBD Fencing on SUSE
• Overview of Multiple or Redundant Fencing
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AWS Storage

• AWS - Setting Up A Billing Budget
• AWS EBS & EFS Elastic Block Storage & Elastic File System
• AWS S3 Storage
• AWS Snow Family
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AWS Networking

• ASG Auto Scaling Groups
• AWS - Accessing AWS
• AWS - Connecting to AWS
• AWS - VPC Gateways
• AWS CIDR - Classless Inter-Domain Routing
• AWS CloudFront
• AWS EC2 Networking Basics
• AWS Gateways
• AWS Load Balancers
• AWS NACLs - Network Access Control Lists
• AWS NAT Gateways and NAT Instances
• AWS SSH Troubleshooting
• AWS VPC Peering
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AWS Databases

• AWS - Choosing an AWS Database
• AWS Aurora
• AWS DB Parameters
• AWS DynamoDB
• AWS ElastiCache for Redis/Memcached
• AWS RDS
• Elasticache
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AWS Security

• AWS - Identity Federation
• AWS IAM - Identity and Access Management
• AWS NACLs - Network Access Control Lists
• AWS Security Groups
• AWS Security Groups (SGs) and Network Access Control Lists (NACLs) - What's the Difference?
• AWS Security Services
Show all articles ( 3 ) Collapse Articles

AWS Containers

• AWS Containers

AWS Message Queueing

• AWS SQS Standard Queueing System

AWS Services

• AWS - Core Services
• AWS - Elastic Beanstalk
• AWS CloudFront
• AWS Lambda
Show all articles ( 1 ) Collapse Articles

AWS Monitoring

• AWS Additional Monitoring Tools
• AWS CloudTrail, CloudWatch, and Config Compared
• AWS CloudWatch Monitoring Overview

AWS Migration

• AWS - Migration of On-Premises Infrastructure to AWS Cloud

AWS All AWS Posts

• ASG Auto Scaling Groups
• AWS - Accessing AWS
• AWS - Choosing an AWS Database
• AWS - CloudFormation
• AWS - Connecting to AWS
• AWS - Core Services
• AWS - Elastic Beanstalk
• AWS - Identity Federation
• AWS - Setting Up A Billing Budget
• AWS - Solutions Architect - Associate Level Syllabus
• AWS - The AWS Well-Architected Framework
• AWS - VPC Gateways
• AWS Additional Monitoring Tools
• AWS Aurora
• AWS CIDR - Classless Inter-Domain Routing
• AWS CloudFront
• AWS CloudTrail, CloudWatch, and Config Compared
• AWS CloudWatch Monitoring Overview
• AWS Containers
• AWS DB Parameters
• AWS DynamoDB
• AWS EBS & EFS Elastic Block Storage & Elastic File System
• AWS EC2 Elastic Cloud Compute
• AWS EC2 Networking Basics
• AWS ElastiCache for Redis/Memcached
• AWS Gateways
• AWS How To Create A New User With SSH Access For An EC2 Instance
• AWS IAM - Identity and Access Management
• AWS Lambda
• AWS Load Balancers
• AWS NAT Gateways and NAT Instances
• AWS Pricing & Billing
• AWS RDS
• AWS Route 53
• AWS S3 Storage
• AWS Security Groups
• AWS Security Groups (SGs) and Network Access Control Lists (NACLs) - What's the Difference?
• AWS Security Services
• AWS Snow Family
• AWS Solutions Architect Associate Diploma Cheat Sheet
• AWS SQS Standard Queueing System
• AWS SSH Troubleshooting
• Elasticache
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AWS Route 53

• AWS Route 53

AWS Automation

• AWS - CloudFormation
• AWS - Elastic Beanstalk

AWS Cheat Sheets

• AWS Solutions Architect Associate Diploma Cheat Sheet

Backup & Restore

• Using rsync for backup and restore

AWS Certification & Training

• AWS - Core Services
• AWS - Solutions Architect - Associate Level Syllabus
• AWS - The AWS Well-Architected Framework

AWS EC2

• AWS EC2 Elastic Cloud Compute
• AWS How To Create A New User With SSH Access For An EC2 Instance

AWS Pricing

• AWS Pricing & Billing

Automation - Ansible

• How to Install Ansible on Ubuntu
• Using Ansible - Getting Started
• Using Ansible Galaxy
• Using Ansible Molecule
Show all articles ( 1 ) Collapse Articles

Automation - Satellite

• Using RedHat Satellite Server