October 21, 2019

Build a single-app rootfs for Firecracker MicroVMs

Spawning applications in the cloud has been made super easy using container frameworks such as docker. For instance running a simple command like the following docker run --rm -v /path/to/nginx-files:/etc/nginx nginx spawns an NGINX web server, provided you customize config files and the actual HTML files to be served. This process, inherits NGINX’s stock docker hub rootfs, and spawns it as a docker container in a generic Linux container host.
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October 21, 2019

Porting Firecracker to a Raspberry Pi 4

Since we got our hands on the new Raspberry Pi 4, we started exploring how various virtualization technologies behave on the board. First thing we tried is how to run Nabla on it and how it compares to native KVM. Next thing we wanted to try is firecracker, the notorious micro-VMM that Amazon Lambda & Fargate run on. To our disappointment, firecracker was not yet running on RPi4. So we started looking into coding in the necessary changes :)
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July 14, 2019 | Last update: Oct 17, 2019

Build a 64bit bootable image for a Raspberry Pi 4

Given the traction our previous post got, we thought we should jot down the steps to build a 64-bit bootable image for a RPi4. The distro we’re most familiar with is Debian, so we’ll go with a debian-like distro like Ubuntu. If you don’t feel like playing with kernel compilation and FS images, just grab the binary and dd it to an SD card! First step, download the 64-bit ubuntu server distro for the RPi3:
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July 10, 2019 | Last update: Oct 17, 2019

Playing with a Raspberry Pi 4 64-bit

Lightweight virtualization is a natural fit for low power devices and, so, seeing that the extremely popular Raspberry Pi line got an upgrade, we were very keen on trying the newly released Raspberry Pi 4 model B. Getting the board up and running with a 64bit kernel (and a 64bit userland) proved to be kind of a challenge, given that currently there is a number of limitations (SD card not fully working for > 1GB RAM, coherent memory allocations etc.
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February 23, 2019 | Last update: Feb 24, 2019

How to build a python snippet for running in a Nabla container

In our previous posts, we saw how to build the toolchain for a Nabla container, and also how we can use this toolchain to run applications as unikernels using Nabla. In this post, we will be focusing on the steps we need to take into running something actually useful using Nabla. More specifically, we will go through all the steps for building Python3 into a Rumprun unikernel, suitable for running in a Nabla container, and cooking a filesystem that includes a Python script that we wish to run within.
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