By default ZFS uses 50 % of the host memory for the “Adaptive Replacement Cache” (ARC). Allocating enough memory for the ARC is crucial for IO performance, so reduce it with caution. As a general rule of thumb, allocate at least 2 GiB Base + 1 GiB/TiB-Storage. For example, if you have a pool with…
In this tutorial, you will learn how to use Rsync to backup your LXD containers running on a ZFS storage pool to a remote host. Backing up your containers is an essential step in protecting your data and ensuring business continuity in case of any disaster. With Rsync, you can easily transfer the snapshot of…
Nginx is a high-performance web server, load balancer, and reverse proxy that powers some of the most visited websites in the world. If you’re looking to improve the performance and security of your web applications, you can’t go wrong with Nginx. In this guide, we’ll show you how to install the latest version of Nginx…
When using Nginx as a reverse proxy for Apache, among others, you may get timeouts with error code 504 if an application takes longer to complete a request than the default Nginx request timeout which is 60 seconds. To increase the request timeout in Nginx to serve long-running requests, we need to change the default…
LXD containers are lightweight virtual machines that provide isolated environments for applications to run. While they are designed to be lightweight and resource-efficient, it is still possible for applications to consume excessive resources and affect the overall performance of the system. To ensure that the resources of your LXD containers are used efficiently, it is…
A new standard has been proposed that will allow web sites to provide a way to communicate security-related issues. A “security.txt” file containing the relevant information should be placed in the “.well-known” directory of the web server. The securitytxt.org website has a form that allows you to quickly generate the text to be included in…
In a previous post, we looked at creating a BTRFS loop device. In this tutorial, we are going to add an existing BTRFS storage pool to LXD. # storage create new-btrfs btrfs source=/mnt/btrfs Check the configuration # lxc storage show new-btrfs config: source: /mnt/btrfs volatile.initial_source: /mnt/btrfs description: “” name: new-btrfs driver: btrfs used_by: [] status:…
In this tutorial, we will learn how to create a BTRFS loop device (virtual block device) and how to mount this device permanently so that it is available when the system reboots. We will further see how to expand a BTRFS loop device without losing the data already stored. # mkdir /btrfs-dir Create a new…
It often happens that a domain is moved to another web server or is simply no longer registered and the corresponding certificate needs to be removed from the list of domains that acme.sh maintains. This can be done easily with the following command: # acme.sh –remove -d my_domain.com [Wed Feb 1 15:10:58 CEST 2022] my_domain.com…
ERPNext is a promising Open Source ERP solutions that, unlike similar products such as Odoo is completely Open Source and as such does not require paying modules to use all its functionalities. ERPNext is built on the Frappé Framework that can be managed with the cli tool “bench”. Although somewhat cumbersome, installation is not really…
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