It is not recommended to run LXD containers in privileged mode because this can seriously compromise the isolation and/or security of the host system. A privileged container can do things that affect the entire host – for example, it can use things in /sys to reset the network card, which will reset it for the…
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…
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…
If you try to delete a LXD container, you may get a “dataset is busy” error message because the dataset the container uses in the ZFS storage pool remains mounted in the namespace used by LXD. In this example, we will simulate this problem by trying to delete a container “alpine”. # lxc delete alpine…
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…
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…
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…
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…
By default, a new LXD container is assigned a dynamic IPv4 address by the internal LXD DHCP server. However, in many cases it is necessary to assign a static IP address, for example to make a web server available on a separate container behind a proxy server running on another container on the same host,…
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