Mysql server has gone away - Fix

Mysql server has gone away – Fix

The MySQL server has gone away error can occur when you have an established connection to the MySQL server and for one reason or another, the connection times out or otherwise goes down. In the context of a Linux system, the error can sometimes be seen from the MySQL client. In this tutorial, we will show several solutions for dealing with and troubleshooting the MySQL error.

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Allowing MySQL connections through firewall and creating a new user that allows connections from all hosts

MySQL: Allow all hosts

If you wish to access your MySQL server remotely, it will be necessary to configure one or more users to allow access from remote hosts. If you do not know all the IP addresses of the connecting hosts, then you can simply allow connections from all hosts.

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LAMP server setup on Ubuntu 22.04 Jammy Jellyfish

Ubuntu 22.04 LAMP installation

A LAMP stack is an assortment of software that contains everything you need in order to serve a website, show dynamic content, and store or retrieve data from a database. The software is all within the LAMP acronym, namely the Linux operating system, Apache web server, MySQL database (or MariaDB alternatively), and PHP programming language.

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Backing up a MySQL database on Linux

Linux commands to back up and restore MySQL database

It’s always a good idea to take frequent backups of your MySQL or MariaDB databases. They can potentially contain thousands of lines of irreplaceable data. Many users may be confused on how to back up their databases at first, as the process differs quite a bit from backing up ordinary files. The process of restoring a backup must also be known, as there’s no point in having a backup if the user cannot reliably restore it.

In this guide, we’ll go over various command line examples to back up and restore MySQL or MariaDB databases on a Linux system. You can then use these commands to make regular backups of your databases, or even add them to a Bash script that can do most of the work for you. Another option is to configure cron to make regularly scheduled backups of your databases.

In this tutorial you will learn:

  • How to back up MySQL or MariaDB database (one or multiple)
  • How to restore a MySQL or MariaDB database backup

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WordPress admin menu

WordPress Installation on Ubuntu Linux with Apache and MySQL

WordPress has remained one of the best and easiest ways to get a sleek site up and running ever since its inception in 2003. As a matter of fact, current trends only show its popularity continuing to increase. WordPress is simple to use, and even hosting it yourself isn’t that hard, as we’ll prove to you in this article.

In this guide, we’ll show you how to get your site hosted with WordPress on Ubuntu Linux. We’ll use Apache as our HTTP server, and also install PHP and MariaDB (an open source implementation of MySQL) since WordPress requires them in order to function. This assortment of packages is commonly referred to as a LAMP stack (Linux, Apache, MySQL, PHP). Once those packages are installed, we’ll go over the configuration of Apache and MySQL, including initial setup of a database and user, before installing WordPress itself. Towards the end, we’ll also show you how to configure a self signed SSL certificate, or get a free one from Let’s Encrypt, which enables your site to utilize HTTPS.

In this tutorial you will learn:

  • How to install and configure Apache
  • How to install and configure MariaDB for MySQL
  • How to setup a MySQL user and database for WordPress
  • How to download and install WordPress
  • How to configure a self signed SSL certificate for your WordPress site
  • How to configure a free SSL certificate from Let’s Encrypt

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