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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
Section 19 – Malicious Activity: Overview
A Practical Guide To Basic WordPress Security
CompTIA Section - Section 3 Threat Actors
CompTIA Section 8 - Cryptographic Solutions
CompTIA Security - Section 6 Malware
CompTIA Security Plus - Section 24: Incident Response Study Guide
CompTIA Security Plus - Section 26: Automation and Orchestration Study Guide
CompTIA Security Plus: Section 9 Risk Management
CompTIA Security+ Section 7: Data Protection
CompTIA: Security Plus - Section 15: Security Architecture Study Guide
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
Section 10 - Third Party Vendor Risks
Section 12 - Asset and Change Management
Section 16 - Security Infrastructure Section 16
Section 17 - IAM Identity and Access Management
Section 2 Fundamentals of Security
Section 20 - Hardening
Section 22 - Security Tools
Section 22 Vulnerability Management
Section 23: Alerting and Monitoring
Section 24 - Incident Response
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
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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 )
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Monitoring
LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson Monit
LPIC3 DIPLOMA Linux Clustering - LAB NOTES: Lesson SMARTMONTOOLS
Network Speed Testing Using iperf3
Section 23: Alerting and Monitoring
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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 )
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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 )
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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 )
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Emailservers
Forwarding Email Using Postfix
Installation and Configuration of Postfix Emailserver
Installing Dovecot IMAP Server
Postfix Commands
Show all articles ( 1 )
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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 )
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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
Show all articles ( 6 )
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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
Show all articles ( 1 )
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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
Show all articles ( 10 )
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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
Show all articles ( 4 )
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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
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AWS Containers
AWS Containers
AWS Message Queueing
AWS SQS Standard Queueing System
AWS Services
AWS - Core Services
AWS - Elastic Beanstalk
AWS CloudFront
AWS Lambda
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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
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Automation - Satellite
Using RedHat Satellite Server
Comptia Security Plus
Section 19 – Malicious Activity: Overview
CompTIA Section - Section 3 Threat Actors
CompTIA Section 8 - Cryptographic Solutions
CompTIA Security - Section 6 Malware
CompTIA Security Plus - Section 24: Incident Response Study Guide
CompTIA Security Plus - Section 26: Automation and Orchestration Study Guide
CompTIA Security Plus: Section 9 Risk Management
CompTIA Security+ Section 7: Data Protection
CompTIA: Security Plus - Section 15: Security Architecture Study Guide
Section 10 - Third Party Vendor Risks
Section 12 - Asset and Change Management
Section 16 - Security Infrastructure Section 16
Section 17 - IAM Identity and Access Management
Section 2 Fundamentals of Security
Section 20 - Hardening
Section 22 - Security Tools
Section 22 Vulnerability Management
Section 23: Alerting and Monitoring
Section 24 - Incident Response
Show all articles ( 16 )
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