Zabbix is one of the most popular open-source monitoring software tools. With Zabbix you can monitor virtual machines, cloud services, networks and other various IT components. Zabbix collects large amounts of data and helps with better understanding it by displaying it in a more readable format. Some of the metrics Read more…
In case you’re running Ubuntu 18.04 ( or earlier versions as well, such as 16.04, 14.04 ), you may be encountering a locales warning or error while trying to update your package index or installing a package. As the locales package configuration states: Locales are a framework to switch between Read more…
In this tutorial we’ll be installing the latest version of NextCloud (15 at the time of writing) on an Ubuntu 18.04 server, with Nginx and PHP7.3. We’ll also secure our NextCloud installation with free SSL/TLS certificates provided by Let’s Encrypt. NextCloud is a free and open-source self-hosted cloud storage solution, Read more…
MariaDB is a free and open-source relational database system, that has come to be one of the most popular and widely used in the world. Development is lead by some of the original developers of MySQL, who forked MariaDB from MySQL in 2009, due to concerns over MySQL’s acquisition by Read more…
phpMyAdmin is a free and open-source MySQL and MariaDB management tool. It allows you to manage databases, execute SQL queries, manage user accounts, export and import data, and much more – all over a web interface. It is, and has been for a long time, one of the most popular Read more…
In Unix-like system, which includes Linux, there are sets of rules for each file, which defines who can access that file and how they can access that file. These rules are called permissions or modes. That brings us to the chmod command, which stands for change mode. Before using chmod, Read more…
What is FreeRADIUS? FreeRADIUS is an authentification, authorization and accounting protocol. It was built in the dial-up era to manage users and keep track of the bandwidth usage by each connection for billing purposes. It is still a very strong tool to use even today. It is fast to set Read more…
Let’s Encrypt is a Certificate Authority (CA), developed by the Internet Security Research Group, that provides free and easily obtainable SSL/TLS certificates. Such certificates are required to enable HTTPS on web servers. Let’s Encrypt also provides a very convenient software client, called Certbot, that automates most of the process of Read more…
UFW, also called Uncomplicated Firewall or sometimes Ubuntu Firewall, is an easy to use interface for iptables, that’s great for filtering traffic and has good documentation. It’s main purpose is to simplify managing iptables. In this tutorial you’ll learn how to set up and use UFW on Ubuntu 18.04. Prerequisites Read more…
Docker Compose is a tool that helps you define and run multi-container applications. Instead of you building, running and connecting containers from separate Dockerfiles, it allows you to use a YAML file (called the Compose file) to define all of your application’s services, after which you can create and start Read more…