oar-team/nixos-compose

Ease reproducible experiments of distributed systems

NixOS Compose

The goal of NixOS-Compose is to reduce the burden of setting up ephemeral distributed systems thanks to Nix functional package manager and Nixos

The main common use cases are:

• Testing/developing for different targets (vm, container, baremetal).
• Rapid Infrastructure as Code prototyping.
• Evaluating and Benchmarking w/ reproducibility guarantee.
• Advanced experiment for research studies in DS, HPC, Cloud/Edge/Fog, ...

The NixOS-Compose project takes inspiration and code from NixOS Tests, nixos-generators and Arion.

Documentation is located here

Academic Publication

• Painless Transposition of Reproducible Distributed Environments with NixOS Compose, IEEE Cluster'22 conference, 2022, [pdf][bibtex].

nixos-compose's Issues

/etc/hosts is incomplete in Docker

In the VM and G5K flavours, the /etc/hosts file contains information about all deployed nodes, but in the Docker flavour, there is only information about the current node.

Being able to set the VM memory size permanently

Hi!

My composition needs VMs with 2GB of memory, but the default value is 1GB. I found out that I can set the VM memory using the MEM environment variable, but this is not very reproducible and I'd like to have a more permanent way to set this value.

Is it possible to set it in the composition directly? Or in the setup.toml?

Thanks!

NixOS compose for building docker issue

It seems that the commit 905e3fd9395e43aa4aee3675d8a8b133b629de97 would be the last working commit on building a docker image from a basic template. After that commit, errors received such as:

error: undefined variable 'buildEnv'

The reproducing flow, would be:

nxc init -t basic
nxc build -f docker