Ubuntu 22.04: install Docker

In this tutorial, I will show you a script to install Docker and Docker Compose on Ubuntu 22.04. Today more and more applications are available in containers with Docker, I regularly have to install a new machine on Ubuntu and have to install Docker and Docker Compose. Personally, I prefer to install Docker from the …

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  Zabbix: monitoring your infrastructure – installation and configuration with Docker

In this tutorial, I will explain how to set up Zabbix with Docker to monitor your server and network infrastructure. For those who follow me regularly, I have long been a fan of PRTG for its “simplicity” but which has certain limits compared to Zabbix. I will come back to it in an article explaining …

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  Crowdsec: secure your web server network – installation and configuration

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 …

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GLPI 10: add a message collector

Présentation The collector in GLPI allows you to retrieve emails from a mailbox and then create a ticket. If in your organization you have a mailbox dedicated to IT incidents, the collector will allow you to collect emails from this mailbox and create a ticket automatically. When message (email) notifications are enabled, if users respond …

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Nginx: compile an external module

In this tutorial, I will explain how to compile an external module for Nginx in order to add additional functionality to the web server. To illustrate this tutorial, I will take as an example the module http-headers-more-filter which allows you to modify the headers (hearders) sent by HTTP requests. Before you begin, make sure you …

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How to upgrade from GLPI 9.5.X to GLPI 10.0.X

In this article, which is not really going to be a tutorial, but rather a guide to help you move from GLPI 9.5.X to GLPI 10.0.X. At the time of writing this guide in 2024, it has now been almost 2 years since GLPI 10 is out. There are still many organizations that have still …

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Docker: change default IP address ranges

In this tutorial, I will explain how to change Docker’s default address range. By default, Docker uses class “B” private addresses from 172.17 to 172.32. For each “stack” or container, it will assign a range with a mask in /16. Here is an example : In some cases, it may be necessary to modify this …

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Proxmox: backup with Proxmox Backup Server

In this tutorial, we will see how to set up a backup in Proxmox with Proxmox Backup Server. Overview of Proxmox Backup Server In addition to providing a free virtualization solution, Proxmox provides a backup solution for its Hypervisor system under the name Proxmox Backup Server. Key features: You can find the full feature list …

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Proxmox: delegate authorizations to users

In this tutorial, we will see how to delegate actions to a user on a virtual machine using roles. Proxmox is a complete hypervisor that allows you to manage authorizations on virtual machines quite finely. We will assume that you need to authorize a person from the support service to be able to manage the …

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Proxmox: create a private network with NAT

In this tutorial, I will explain to you how to create a private network on Proxmox and configure NAT so that the LXC/CT containers and virtual computers in this network have access to the Internet. Using NAT in this situation will bring out the VM and CT to the Internet with the IP address of …

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Proxmox: supervision with Zabbix

In this tutorial, I will explain to you how to monitor a Proxmox server with Zabbix. Supervision of Proxmox with Zabbix is done through the Proxmox API, which also makes it possible to report information on the VMs and CT which operates on the Hypervisor. Supervision is done by importing a model into Zabbix; it …

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