Simos Xenitellis

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Setting up the ESP32 in LXD on Ubuntu

The ESP32 is a dual-core microcontroller that has both WiFi and Bluetooth. The ESP32 is the next generation of the older single-core microcontroller ESP8266 that only had WiFi. You can perform most tasks that you did with the various Arduinos but with the ESP32 (or ESP8266) and you also have WiFi embedded into the microcontroller. …

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Permanent link to this article: https://blog.simos.info/setting-up-the-esp32-in-lxd-on-ubuntu/

How to run Julia on Jupyter in a LXD container

Julia is a computer language well-suited for scientists, engineers and students. I wrote the following introduction a couple of days ago. In this post we are going to see how to use Julia in the Jupyter interactive environment. This means that you run Julia commands in your browser and get the output in your browser. …

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Permanent link to this article: https://blog.simos.info/how-to-run-julia-on-jupyter-in-a-lxd-container/

Learning the Julia computer language on Ubuntu

There is yet another computer language, called Julia. What’s special with Julia, you may ask? It is a language specifically suited for tasks of scientists, engineers and students. Compared to a general purpose programming language, Julia has built-in those complex data types that you need in science. For example, multidimensional matrices are built-in in Julia. …

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Permanent link to this article: https://blog.simos.info/learning-the-julia-computer-language-on-ubuntu/

How to manage LXD from within one of its containers

In a LXD (lex-dee) installation there is the host (where the LXD service is running) and there are the containers that you create. On the host, you can run the various lxc subcommands (like lxc list to get a list of the containers). The containers, on the other hand, are by default confined and isolated …

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Permanent link to this article: https://blog.simos.info/how-to-manage-lxd-from-within-one-of-its-containers/

Configuring public IP addresses on cloud servers for LXD containers

You have a cloud server and you got more than one public IP addresses. How do you get those additional IP addresses to associate to specific LXD containers? That is, how do you get your LXD container to use a public IP address? This post has been tested with a packet.net baremetal server. Prerequisites You …

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Permanent link to this article: https://blog.simos.info/configuring-public-ip-addresses-on-cloud-servers-for-lxd-containers/

A closer look at Minimal Ubuntu for LXD

Here is the announcement of the release of Minimal Ubuntu for public clouds and Docker Hub. Minimal Ubuntu is similar to Ubuntu Server, but with much less packages. Among the packages that are gone, it’s documentation packages, locales and other user-oriented packages. Obviously, you can install whichever packages you need. That is, for any package …

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Permanent link to this article: https://blog.simos.info/a-closer-look-at-minimal-ubuntu-for-lxd/

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