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Lesson 1 - Overview of Keycloak

Keycloak is an open-source solution for managing and authenticating users. In this lesson, we will learn about Keycloak, how to install and configure Keycloak on Ubuntu Linux, helping you manage and authenticate users easily and effectively.

#keycloak #oauth2

Lesson 3 - Exploring Project Structure and Managing Dependencies

In this lesson, we will explore the default project structure of a Spring Boot project and how to manage dependencies in a Spring Boot project, helping you understand how Spring Boot projects are organized and dependencies are managed.

#spring-boot #spring-framework

Lesson 2 - Installation and Development Environment Setup

In this lesson, we will install and set up the Spring Boot development environment on your personal computer, so you can start developing Spring Boot applications without having to install many things.

#spring-boot #spring-framework

Lesson 10 - Backup and Restore on Ubuntu

In this lesson, we will learn how to back up and restore data on an Ubuntu Server. Data backup is an essential part of protecting your critical data from loss and corruption, while helping you recover data quickly when needed, using tools like `tar` and `rsync`, setting up automated backups with `cron`, and restoring data from a backup.

#ubuntu-server #virtualbox

Lesson 9 - Managing Packages with APT on Ubuntu

In this lesson, we will learn how to manage software packages on an Ubuntu Server using APT, a popular package management tool on Debian-based operating systems, including Ubuntu, that helps you install, update, and remove software efficiently.

#ubuntu-server #virtualbox

Lesson 6 - Basic Linux Commands on Ubuntu

Learn how to use basic Linux commands to manage your system and interact with the operating system, including navigating directories, managing files and directories, and viewing and editing files.

#ubuntu-server #virtualbox

Lesson 6 - User and Group Management on Ubuntu

In this lesson, we will learn how to manage users and groups in the Linux system. Managing users and groups is an important part of ensuring security and organization in the system. We will learn how to create and manage users, manage groups, and set access permissions using basic commands such as `adduser`, `deluser`, `usermod`, `groupadd`, `groupdel`, `groupmod`, `chmod`, `chown`, and `chgrp`.

#ubuntu-server #virtualbox

Lesson 7 - Managing Services and Processes on Ubuntu

Learn how to manage services and processes on Ubuntu Server to start, stop, and manage services, as well as view and manage running processes on the system.

#ubuntu-server #virtualbox

Lesson 8 - Network Configuration on Ubuntu

Learn how to configure network settings on Ubuntu Server to connect to the internet and other devices on the network.

#ubuntu-server #virtualbox

Lesson 1 - Introduction to Spring and Spring Boot

This lesson will introduce Spring Framework and Spring Boot, two important technologies in Java programming. You will learn about the development history of Spring Framework and Spring Boot, as well as their key features.

#spring-boot #spring-framework

Lesson 4 - Installing Ubuntu Server on VirtualBox

Learn how to install Ubuntu Server on VirtualBox, the first step to creating a virtual server on your personal computer.

#ubuntu-server #virtualbox

Lesson 3 - Creating a Virtual Machine in VirtualBox

In this article, we will explore how to create a virtual machine in Oracle VM VirtualBox to install the Ubuntu Server operating system.

#ubuntu-server #virtualbox

Lesson 2 - Installing VirtualBox

In this article, we will learn how to install Oracle VM VirtualBox on Windows.

#ubuntu-server #virtualbox

Lesson 1 - Introduction to Ubuntu Server and VirtualBox

In this lesson, you will learn about Ubuntu Server and VirtualBox, as well as how to install them on your computer. Ubuntu Server is a Linux operating system based on Debian, designed to run on servers and virtual machines. VirtualBox is an open-source virtualization application, allowing you to create and manage virtual machines on your personal computer.

#ubuntu-server #virtualbox

Install and Secure Memcached on Ubuntu 22.04

Learn how to install and secure Memcached on Ubuntu 22.04. Memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load.

#cache #memcached

Pgpool-II Admin Ubuntu

Pgpool Admin is a configuration management and monitoring tool for PGpool-II, helping you manage and monitor the performance of your PostgreSQL database. In this guide, we will go through the steps to install and configure Pgpool Admin on Ubuntu Linux, helping you manage and monitor the performance of your database.

#database #postgreSQL

Lesson 1 - Install Pgpool-II on Ubuntu

PGpool-II is a unique middleware solution, specially designed to optimize and scale the capabilities of the PostgreSQL database management system. It brings many benefits such as optimizing connections, load balancing, and performing data replication, making PGpool-II an indispensable tool in managing PostgreSQL deployments. In this detailed guide, we will go through the steps to install and configure PGpool-II on the Ubuntu Linux operating system, helping you to maximize the performance and high availability of your database.

#database #postgresql

Lesson 2 - Load Balancing and Replication

PGpool-II is a unique middleware solution specifically designed to optimize and enhance the capabilities of the PostgreSQL database management system. It offers various benefits such as connection optimization, load distribution, and data replication, making PGpool-II an indispensable tool in managing PostgreSQL deployments. In this detailed guide, we will walk through the steps to install and configure PGpool-II on an Ubuntu Linux operating system, helping you maximize the performance and high availability of your database.

#database #postgresql

Lesson 4 - PostgreSQL 16 Replication Setup

PostgreSQL has a layer replication feature, allowing data to be copied from one DB to another, creating multiple copies of data. This feature helps distribute data, ensure the latest data, and support replacing the primary server.

#database #replication

Install Open VPN Server on ubuntu 22.04

Open VPN là một phần mềm mã nguồn mở giúp tạo ra một mạng riêng ảo (VPN) giữa các máy tính. OpenVPN có thể chạy trên nhiều hệ điều hành khác nhau, bao gồm cả Linux, Windows, Mac OS X, và các thiết bị di động.

#vpn

Lesson 1 - Introduction to Docker

Docker is one of the most popular tools for containerizing applications. It offers efficiency and operational cost reduction, enabling any developer in any development environment to build stable and reliable applications.

#docker

Lesson 2 - Installing Docker on Mac M1

To install and use Docker on Mac M1 efficiently, you need to carefully follow these steps in detail. Mac M1 uses ARM architecture, so there are a few things to note to ensure Docker operates smoothly.

#docker #apple-m1-silicon

Lesson 3 - Building Docker Image

To efficiently build Docker Images, understanding each step and applying optimization techniques is crucial. Here is a more detailed guide with additional examples on how to create Dockerfile, build Images, optimize, and share Docker Images.

#docker #apple-m1-silicon

Lesson 4 - Running a Docker Container

A detailed guide on how to run a Docker container. You will learn how to choose a Docker image, use the `docker run` command, and common options like `-it`, `--rm`, `-p`, and `-v`.

#docker #apple-m1-silicon

Lesson 5 - Docker Compose

Docker Compose is a powerful tool that helps you define and run multiple Docker containers easily and efficiently. You will learn how to use Docker Compose to manage your application with a simple YAML configuration file.

#docker

Lesson 6 - Docker Security

Docker Security is an important topic that everyone using Docker should be concerned about. In this lesson, we will explore issues related to Docker security and how to solve them.

#docker

Lesson 7 - Docker Networking

Docker Networking is an important topic that everyone using Docker should be concerned about. In this lesson, we will explore issues related to Networking in Docker and how to solve them.

#docker

Lesson 8 - Docker Storage

Docker Storage is an important part of Docker, helping manage data and storage within containers. In this article, we will explore the types of storage in Docker, how to manage and use storage within containers.

#docker

Lesson 9 - Docker Swarm

#docker

An Overview of TCP/IP

TCP/IP is the main network protocol suite behind the Internet, including TCP (Transmission Control Protocol) and IP (Internet Protocol), ensuring reliable and efficient data transmission.

#tcp-ip #network-protocol

What is GraalVM?

GraalVM is a unique multi-language virtual machine platform developed by Oracle, supporting Java and many other languages such as JavaScript, Ruby, and Python. It provides ahead-of-time (AOT) compilation and significantly optimizes performance for applications. GraalVM is suitable for developing microservices, cloud applications, and enhancing interaction between programming languages.

#graal-vm #java-virtual-machine

Installation and Configuration of MAAS (Metal as a Service) on Ubuntu 22.04 LTS

Installing and configuring MAAS (Metal as a Service) on Ubuntu 22.04 LTS provides an efficient physical hardware management solution, with automation capabilities and easy scalability. This process optimizes server configuration and resource management, supporting cloud environments and data center operations

#maas #ubuntu-22.04-lts

Introduction to MAAS (Metal as a Service)

MAAS (Metal as a Service) is a solution that provides direct hardware, enabling automation of operating system deployment on physical servers. It provides the ability to remotely manage hardware in a flexible and efficient way, supporting cloud and data center environments. MAAS helps optimize operations, reduce installation and configuration time, thereby improving performance and stability for IT infrastructure.

#maas #ubuntu-22.04

Creating a new partition in Ubuntu 22.04

This post guides you on how to create a new partition in Ubuntu 22.04. The post includes steps from checking the hard disk partition, identifying the disk, creating a new partition, creating a Physical Volume, creating a mount point, checking the Volume Group (VG), creating a Logical Volume (LV), creating a File System, and finally mounting the Logical Volume. Each step is detailed with necessary commands and illustrative images.

#Ubuntu #hard-disk-partitioning

Lesson 2 - PostgreSQL vs. Other Databases

How does PostgreSQL compare with other databases?

#database #postgreSQL

Lesson 1 - Introduction to PostgreSQL Database

PostgreSQL is a powerful and open-source Object-Relational Database Management System (ORDBMS), known for its stability, scalability, and SQL compliance. Initially developed at the University of California, Berkeley, in the 1980s, it has since become one of the most popular open-source databases worldwide.

#database #postgresql

What is ACID?

ACID (an acronym for Atomicity, Consistency, Isolation, Durability) is a database concept that experts often look for when evaluating databases and application architectures. For a reliable database, all four properties need to be achieved.

#ACID #What is ACID

What is MVCC?

MVCC

#MVCC #What is MVCC

Lesson 3 - Object Model PostgreSQL

PostgreSQL is an object-relational database management system (ORDBMS). This means it combines features of both relational databases (RDBMS) and object-oriented databases (OODBMS). The object model in PostgreSQL provides features such as user-defined data types, inheritance, and polymorphism, enhancing its capabilities beyond a typical SQL-based RDBMS.

#Database #PostgreSQL

Extend LVM Disk on Linux Ubuntu 22.04

LVM (Logical Volume Manager) is a tool on the Linux operating system that allows more flexible management of drives and drive partitions. Instead of dividing the drive into fixed partitions, LVM allows the creation of virtual volumes (logical volumes) that can be resized, creating many smaller storage blocks to make the most of free space.

#extend-disk #lvm-ubuntu

Install and secure PostgreSQL 14 on Ubuntu 22.04