Simos Xenitellis

Author's posts

Nov 15 2017

New Firefox stats, how will they change?

Firefox 57 has been released and it has quite a few features that make it a very compelling browser to use. Most importantly, Firefox 57 has a new browser engine that makes the best use of a multi-core/multi-threaded CPU. Therefore, let’s write down the browser market share stats of today, and compare again in November …

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Permanent link to this article: https://blog.simos.info/new-firefox-stats-how-will-they-change/

Nov 07 2017

How to use Sysdig and Falco with LXD containers

Sysdig (.org) is an open-source container troubleshooting tool and it works by capturing system calls and events directly from the Linux kernel. When you install Sysdig, it adds a new kernel module that it uses to collect all those system calls and events. That is, compared to other tools like strace, lsof and htop, it …

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Permanent link to this article: https://blog.simos.info/how-to-use-sysdig-and-falco-with-lxd-containers/

Nov 06 2017

How to install a Node.js app in a LXD container

Update #1: Added working screenshot and some instructions. Update #2: Added instructions on how to get the app to autostart through systemd. Installing a Node.js app on your desktop Linux computer is a messy affair, since you need to add a new repository and install lots of additional packages. The alternative to messing up your …

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Permanent link to this article: https://blog.simos.info/how-to-install-a-node-js-app-in-a-lxd-container/

Nov 01 2017

How to run Docker in a LXD container

We are running Ubuntu 16.04 and LXD 2.18 (from the lxd-stable PPA). Let’s get Docker (docker-ce) to run in a container! General instructions on running Docker (docker.io, from the Ubuntu repositories) in an LXD container can be found at LXD 2.0: Docker in LXD [7/12].   First, let’s launch a LXD container in a way …

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

Oct 31 2017

Online course about LXD containers

If you want to learn about LXD, there is a good online course at LinuxAcademy (warning: referral). It is the LXC/LXD Deep Dive online course by Chad Miller. Here is a review of this LXC/LXD online course by bmullan. There is a 7-day unlimited trial on LinuxAcademy, then $29 per month (bank card or Paypal). …

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Permanent link to this article: https://blog.simos.info/online-course-about-lxd-containers/

Sep 26 2017

How to set up LXD on Packet.net (baremetal servers)

Packet.net has premium baremetal servers that start at $36.50 per month for a quad-core Atom C2550 with 8GB RAM and 80GB SSD, on a 1Gbps Internet connection. On the other end of the scale, there is an option for a 24-core (two Intel CPUs) system with 256GB RAM and a total of 2.8TB SSD disk …

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Permanent link to this article: https://blog.simos.info/how-to-set-up-lxd-on-packet-net-baremetal-servers/

Sep 26 2017

How to use Ubuntu and LXD on Alibaba Cloud

Alibaba Cloud is like Amazon Web Services as they offer quite similar cloud services. They are part of the Alibaba Group, a huge Chinese conglomerate. For example, the retailer component of the Alibaba Group is now bigger than Walmart. Here, we try out the cloud services. The main reason to select Alibaba Cloud is to …

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Permanent link to this article: https://blog.simos.info/how-to-use-ubuntu-and-lxd-on-alibaba-cloud/

Jun 06 2017

Πως χρησιμοποιούμε περιέκτες LXD (LXD containers) στο Ubuntu και άλλες διανομές

Ξέρουμε για τις εικονικές μηχανές (virtual machines) όπως Virtualbox και VMWare, υπάρχουν όμως και οι περιέκτες (containers) όπως Docker και LXD (προφέρεται λεξ ντι). Εδώ θα δούμε για τους περιέκτες LXD (LXD containers), με την υποστήριξη να είναι ήδη διαθέσιμη σε όσους έχουν Ubuntu 16.04 ή νεότερο. Για τις υπόλοιπες διανομές χρειάζεται εγκατάσταση του πακέτου …

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Permanent link to this article: https://blog.simos.info/%cf%80%cf%89%cf%82-%cf%87%cf%81%ce%b7%cf%83%ce%b9%ce%bc%ce%bf%cf%80%ce%bf%ce%b9%ce%bf%cf%8d%ce%bc%ce%b5-%cf%80%ce%b5%cf%81%ce%b9%ce%ad%ce%ba%cf%84%ce%b5%cf%82-lxd-lxd-containers-%cf%83%cf%84%ce%bf-u/

May 03 2017

How to run graphics-accelerated GUI apps in LXD containers on your Ubuntu desktop

In How to run Wine (graphics-accelerated) in an LXD container on Ubuntu we had a quick look into how to run GUI programs in an LXD (Lex-Dee) container, and have the output appear on the local X11 server (your Ubuntu desktop). In this post, we are going to see how to generalize the instructions in …

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Permanent link to this article: https://blog.simos.info/how-to-run-graphics-accelerated-gui-apps-in-lxd-containers-on-your-ubuntu-desktop/

May 01 2017

How to run Wine (graphics-accelerated) in an LXD container on Ubuntu

Update #1: Added info about adding the gpu configuration device to the container, for hardware acceleration to work (required for some users). Update #2: Added info about setting the permissions for the gpu device. Wine lets you run Windows programs on your GNU/Linux distribution. When you install Wine, it adds all sort of packages, including 32-bit …

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Permanent link to this article: https://blog.simos.info/how-to-run-wine-graphics-accelerated-in-an-lxd-container-on-ubuntu/

Apr 28 2017

A closer look at the new ARM64 Scaleway servers and LXD

Update #1: I posted at the Scaleway Linux kernel discussion thread to add support for the Ubuntu Linux kernel and Add new bootscript with stock Ubuntu Linux kernel #349. Scaleway has been offering ARM (armv7) cloud servers (baremetal) since 2015 and now they have ARM64 (armv8, from Cavium) cloud servers (through KVM, not baremetal). But …

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Permanent link to this article: https://blog.simos.info/a-closer-look-at-the-new-arm64-scaleway-servers-and-lxd/

Mar 15 2017

How to initialize LXD again

LXD is the pure-container hypervisor that is pre-installed in Ubuntu 16.04 (or newer) and also available in other GNU/Linux distributions. When you first configure LXD, you need to make important decisions. Decisions that relate to where you are storing the containers, how big that space will be and also how to set up networking. In …

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Permanent link to this article: https://blog.simos.info/how-to-initialize-lxd-again/

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