How to Limit Resources on a LXD Container?

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…

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Fix “dataset is busy” error when deleting container in LXD.

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…

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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…

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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…

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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…