Add SVG support to php-imagick.
By default, php-imagick does not have support for SVG. To enable it, an additional package must be installed. # apt install libmagickcore-6.q16-6-extra
Copy files and directories between host and a LXD container?
In this tutorial, we will show you how to use the “push” and “pull” command to easily copy files and directories between a host server and a LXC container and visa versa. In this example, on the host server, we will first create a file “myfile.txt” in the “tmp” directory. # touch /tmp/myfile.txt Now copy…
Rezising a loop-based BTRFS storage pool for LXD.
ZFS is without a doubt the best storage pool for use with LXD containers, mainly because of its advanced features, error correction and its great performance. However, in some cases it is better not to use ZFS because of conflicts or poor performance. This is the case, for example, when you want to run Docker…
Automatically update all your running LXD containers.
While you could perform common management of multiple LXD containers with tools like Ansible or Puppet, in this tutorial we are going to show how to work with a simple script that runs on the host and automatically updates/upgrades all running Debian/Ubuntu-based containers. We could extend the script to perform other tasks or include updates/upgrades…
Upgrading Mautic from v3 to v4
In a previous post we showed you how to upgrade Mautic from v2 to v3. In this tutorial, we will go through the steps you need to take to upgrade Mautic from v3 to v4. If you are running Mautic on a VPS or in a LXC/LXD container, it is highly recommended to take a…
PowerDNS Admin reset lost password
PowerDNS Admin is a powerful web administration tool that we use for easily managing domain zones on our PowerDNS servers. Although PowerDNS Admin offers extensive features it lacks a “lost password” feature. So if you happen to lose your password, you are forced to reset it via the command line. In this tutorial, we’ll show…
Set email alerts for root login on Linux servers.
As a Linux system administrator, it is important to know when someone logs into your server, especially as root. Unauthorized logins can cause serious security issues, as they can gain full access to the system and install unwanted and malicious software on it, among other things. Therefore, it is recommended to set up an automatic…
Upgrading Mautic from v2 to v3
A new client recently asked to upgrade a still functioning Mautic 2.15.3 running on Ubuntu 18.04 to the latest Mautic v3. In this guide, we will look at how this can be achieved and what to look out for. If you are running Mautic on a VPS or in a LXC/LXD container, it is highly…
How to convert a LXC container to a LXD container.
Until recently, we were still running a number of legacy LXC containers, which for years performed important mission-critical tasks very stably and with no significant problems. However, we decided to convert them to LXD containers to create a more homogeneous server environment and to simplify management. Switching to LXD also means more functionality and the…
- Ubuntu | SSH | Ubuntu 22.04
How to Set Up SSH Keys on Ubuntu 22.04.
By default Ubuntu SSH root login is disabled and root password has not been set. However, many system administrators prefer to work as root to avoid having to use “sudo” for almost every command and enter passwords over and over again. To allow root login over SSH we first need to set the root password…