In this “‘little” tutorial, I will explain how to view and analyze the space in the command line on Linux with ncdu. If you are adapted from WinDirStat or TreeSize on Windows, the ncdu utility on Linux allows you to have the “same” thing in a terminal. The first thing to do is to install …
In this tutorial, I will explain how to extend a disk’s partition and then the LVM disk. To understand what we are going to do in this tutorial, I have a virtual machine with Ubuntu Server 20.04 installed on an LVM disk, following the addition of data, I must increase the storage capacity, for that …
Here is how to display the default gateway on Ubuntu from the command line. Ubuntu 20.04 + (without net tools) Ubuntu 18.04 – (with net-tools)
In this tutorial, I will explain to you how to secure the network part of your web servers with Crowdsec. The tutorial is made on Ubuntu 20.04 Crowdsec overview Crowdsec is an open source tool that allows you to “secure” or rather add a layer of security to your Linux servers (soon Windows too) by …
In this tutorial, I will explain how to connect to a linux server / computer in SSH without password using a key pair (private / public). Generate the key pair with ssh-keygen To generate a pair of keys, you must have an SSH client available, it is possible to do it from Windows 10 or …
Small memo to create a user on Ubuntu and add it to the sudo group: Enter the password for the current user (sudo) if necessary, then enter the password for the new account twice and enter additional information as required. Confirm the information by pressing Enter. Now we add the user to the sudo group. …
In this tutorial dedicated to Nginx, I will explain how to configure it in order to have a reverse proxy. Before getting to the heart of the matter, I will quickly introduce you to Nginx and what a reverse proxy. For this tutorial, I used an Ubuntu 20.04 machine. Introducing Nginx Nginx is a web …
Ansible is open source multi-platform configuration management software (Linux, Windows, network equipment, etc.). In other words, Ansible will allow you to manage, deploy or even execute actions on a group of computers in a “single command line”. Actions / configuration are written to a YAML format file also called playbook. Through this tutorial, I will …
In this tutorial, I will explain how to install the FusionInventory agent on Ubuntu in order to bring it up in your GLPI inventory. Installation is done from the command line. Installation of prerequisites To function correctly, it is necessary to install several packages first. Enter the command line below to install all dependencies : …
In this tutorial, I will explain to you how to install and configure the SNMP service on Ubuntu, which will then allow you to monitor the server using PRTG or Centreon for example. We will first install the service on the Ubuntu server and then configure it so that it is accessible by the network …