Ubuntu

Status: Deprecated> Status: Deprecated # This article covers a version of Ubuntu that is no longer supported. If you are currently operate a server running Ubuntu 12.04, we highly recommend upgrading or migrating to a supported version of Ubuntu:

Introduction> Introduction # The Apache HTTP server is the most widely-used web server in the world. It provides many powerful features including dynamically loadable modules, robust media support, and extensive integration with other popular software.

About Apache Tomcat> About Apache Tomcat # Apache Tomcat is a web server and servlet container that is used to serve Java applications. Tomcat is an open source implementation of the Java Servlet and JavaServer Pages technologies, released by the Apache Software Foundation.

Introduction> Introduction # High availability is a function of system design that allows an application to automatically restart or reroute work to another capable system in the event of a failure.

Introduction> Introduction # High availability is a function of system design that allows an application to automatically restart or reroute work to another capable system in the event of a failure.

Status: Deprecated> Status: Deprecated # This article is deprecated and no longer maintained. Reason> Reason # The techniques in this article are outdated and may no longer reflect Docker best-practices.

Introduction> Introduction # When you first create a new Ubuntu 20.04 server, you should perform some important configuration steps as part of the initial setup. These steps will increase the security and usability of your server, and will give you a solid foundation for subsequent actions.

The author selected the Internet Archive to receive a donation as part of the Write for DOnations program. Introduction> Introduction # The Elastic Stack — formerly known as the ELK Stack — is a collection of open-source software produced by Elastic which allows you to search, analyze, and visualize logs generated from any source in any format, a practice known as centralized logging.

Introduction> Introduction # WordPress is the most popular CMS (content management system) on the internet. It allows you to easily set up flexible blogs and websites on top of a MySQL backend with PHP processing.

Introduction> Introduction # Nginx is a high performance web server capable of serving content with flexibility and power. When designing your web pages, it is often helpful to customize every piece of content that your users will see.

Introduction> Introduction # The mdadm utility can be used to create and manage storage arrays using Linux’s software RAID capabilities. Administrators have great flexibility in coordinating their individual storage devices and creating logical storage devices that have greater performance or redundancy characteristics.

Introduction> Introduction # Linux system administrators often need to look at log files for troubleshooting purposes. This is one of the first things a sysadmin would do. Linux and the applications that run on it can generate all different types of messages, which are recorded in various log files.

Introduction> Introduction # MQTT is a machine-to-machine messaging protocol, designed to provide lightweight publish/subscribe communication to “Internet of Things” devices. It is commonly used for geo-tracking fleets of vehicles, home automation, environmental sensor networks, and utility-scale data collection.

How To Monitor System Logins> How To Monitor System Logins # A fundamental component of authentication management is monitoring the system after you have configured your users. We will be exploring these concepts on a Ubuntu 22.

Status: Deprecated> Status: Deprecated # This article covers a version of Ubuntu that is no longer supported. If you are currently operate a server running Ubuntu 12.04, we highly recommend upgrading or migrating to a supported version of Ubuntu:

Introduction> Introduction # Let’s automate things. Everything. Let’s also figure out a way to do this using a single tool. One that is easy to program, easy to use. And why not do all this with nothing but SSH installed on the remote machine – all commands scripted at a single location for executing locally or on any number of various servers.

The author selected the Free and Open Source Fund to receive a donation as part of the Write for DOnations program. Introduction> Introduction # In this tutorial you will use systemd to configure MySQL to restart automatically after a reboot or crash.

Brief Introduction to Entropy and Randomness> Brief Introduction to Entropy and Randomness # The Linux pseudo random number generator (PRNG) is a special device that generates randomness from hardware interrupts (keyboard, mouse, disk/network I/O) and other operating system sources.

Introduction> Introduction # Ruby on Rails uses sqlite3 as its default database, which works great in many cases, but may not be sufficient for your application. If your application requires the scalability, centralization, and control (or any other feature) that a client/server SQL database, such as PostgreSQL or MySQL, you will need to perform a few additional steps to get it up and running.

Introduction> Introduction # While many users need the functionality of a database management system like MySQL, they may not feel comfortable interacting with the system solely from the MySQL prompt.