Dec 09 2019
Update February 2021: See the Notes below for extra steps when trying this on the Raspberry Pi 4. Updated instructions for LXD 4.5 (September 2020) LXD 4.5 has added features that make proxy devices more secure in the sense that if something goes wrong on the proxy device, your system is safer. Specifically, the proxy …
Permanent link to this article: https://blog.simos.info/running-x11-software-in-lxd-containers/
Dec 08 2019
With LXD, you can create system containers. These system containers are similar to virtual machines, while at the same time they are very lightweight. In a VM, you boot a full Linux kernel and you run your favorite Linux distribution in a virtualized environment that has a fixed disk size and dedicated allocation of RAM …
Permanent link to this article: https://blog.simos.info/discussion-on-running-x11-applications-from-within-lxd-system-containers/
Dec 08 2019
More, but on the same hardware Traditionally, we would have a physical computer and expect to run a single operating system on it. One way to go over this limitation, is to use virtualization, which allows us to run multiple operating systems (virtual machines) on a computer. For virtualization to work efficiently, we would need …
Permanent link to this article: https://blog.simos.info/comparison-between-lxc-and-lxd/
Nov 10 2019
In LXD, you can add multiple settings in a single command line. For example, to both limit the memory to 2GB and the CPUs to a single core, you would run the following in a single line. Obviously, you can set these separately as well. lxc config set mycontainer limits.memory=2GB limits.cpu=1 See the LXD key/value …
Permanent link to this article: https://blog.simos.info/how-to-add-multi-line-raw-lxc-configuration-to-lxd/
Nov 04 2019
Netdata does real-time health monitoring and performance troubleshooting for systems and applications. It helps you instantly diagnose slowdowns and anomalies in your infrastructure with thousands of metrics, interactive visualizations, and insightful health alarms. When you set it up on your system, Netdata sets up a Web page where you can view real-time information, including CPU …
Permanent link to this article: https://blog.simos.info/how-to-setup-netdata-in-a-lxd-container-for-real-time-monitoring/
Oct 28 2019
CVE-2019-11043 is a buffer overflow in php-fpm that under certain conditions, can lead to remote execution. There is an exploit at PHuiP-FPizdaM that targets certain nginx and php-fpm configurations. On their page, the describe how to use Docker to test this exploit. In this post, we use LXD to test the exploit and verify whether …
Permanent link to this article: https://blog.simos.info/testing-cve-2019-11043-php-fpm-security-vulnerability-with-lxd-system-containers/
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