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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Hyper-V Cluster: Installation and Configuration

Introduction Through this tutorial, we will see how to set up a Hyper-v cluster under Windows Server (2012R2 / 2016/2019) step by step. Each step requires it, will take you on a tutorial to guide you in setting up a Hyper-V cluster. Prerequisites Be in an Active Directory environment, ideally having a server-side domain controller …

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Hyper-V: Live Migration configuring Kerberos delegation

Microsoft Hyper-v

In this tutorial, I’ll walk you through how to configure Live Migration on Hyper-V using Kerberos instead of CredSSP. By default CredSSP is used for authentication during a live migration between the two hosts, which requires logging into both Hyper-V servers simultaneously. The use of Kerberos means that you do not need to open your …

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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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PowerShell: automatically delete files older than X days

In this tutorial, we will see how to delete files older than X day using PowerShell. This type of script is often used in businesses on servers to rotate logs. If we take the example of IIS, the logs are never deleted, which means that after 3 years, we end up with more than 1,000 …

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Exchange 2013/2016/on-line: Add an alias to a mailbox

Exchange ajouter un alias

In this article, we will have how to add an alias to a ball through the Exchange administrative interface (ECP). 1. Go to the Exchange administration interface (2013/2016/on-line). 2. Select box 1 then click on style 2. In the new window go to email address 3 and click on + 4. This opens another pop-up, choose …

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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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Nextcloud: configure the LDAP/Active Directory link

In this new tutorial dedicated to Nextcloud, I will explain to you how to link Nextcloud and an Active Directory or LDAP directory. Linking to an external directory allows Nextcloud to be used without the need to create accounts in the local database and it also allows users to use their Windows ID in the …

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ARR: Block PowerShell access to Exchange

In this tutorial, I will show you how to block PowerShell remote access to Exchange with ARR. As a security measure, if you use IIS ARR to publish Exchange servers to the Internet, you must block PowerShell remote access. By default, it is possible to remotely administer an Exchange server with PowerShell, we find all …

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ARR – HTTP to HTTPS redirection

In this tutorial, I will explain to you how to set up a redirection of a site from HTTP to HTTPS with ARR. If you don’t yet know IIS ARR, I’ll let you discover it in this tutorial: IIS ARR: Installation and configuration. This type of redirection is often implemented when using ARR with an …

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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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