init-snapshot VS nixpacks

Compare init-snapshot vs nixpacks and see what are their differences.

nixpacks

App source + Nix packages + Docker = Image (by railwayapp)
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init-snapshot nixpacks
5 17
240 2,062
0.0% 4.7%
0.0 8.8
almost 3 years ago 3 days ago
Rust Rust
MIT License MIT License
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.

init-snapshot

Posts with mentions or reviews of init-snapshot. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-02-27.
  • Firecracker internals: deep dive inside the technology powering AWS Lambda(2021)
    9 projects | news.ycombinator.com | 27 Feb 2023
    At CodeSandbox we use Firecracker to run our VMs (more info here: https://codesandbox.io/blog/how-we-clone-a-running-vm-in-2-s...).

    To answer the questions:

    > what version of the kernel do you use (the github page says 5.10 but isn't that quite old?)

    Right, they have tested with 5.10, but it also works with higher kernel versions. Our host currently runs 5.19 and we're planning to upgrade to 6.1 soon. The guest runs 5.15.63, we use a config very similar to the recommended config by FC team (it's in the FC repo). It's important to mention that we had to disable async pagefaulting (a KVM feature) with more modern kernel versions, as VMs could get stuck waiting for an PF resolve.

    > What do you use to build the 'micro' images

    We created a CLI that creates a rootfs from a Docker image. It pulls the image, creates a container and then extracts the fs from it to an ext4 disk. For the init, we forked the open sourced init from the Fly team (https://github.com/superfly/init-snapshot) and changed/added some functionality.

    > How do you keep timesync of you're not using a timesync daemon?

    IIRC we expose the time as a PTP device (handled by kvm) and run phc2sys to sync the time in an interval. Firecracker has some documentation on this, where it recommends chrony. It can also be done with vsock, but it would be more manual.

    > Handle kernel and app logs without adding an log daemon, and same through vsocks, etc?

    The init forwards stdout/stderr of the command it runs to its own stdout, which Firecracker then logs out by itself. A supervisor reads these and writes the logs to files.

  • Fly.io: The Reclaimer of Heroku's Magic
    5 projects | news.ycombinator.com | 15 May 2022
    Unless they’ve changed things, there is no containerization within the VM a la kata. They run their own custom init inside the VM and use it to start the entry point. https://github.com/superfly/init-snapshot is the source.
  • Docker without Docker
    5 projects | dev.to | 2 Jun 2021
    Jerome wrote our init in Rust, and, after being cajoled by Josh Triplett, [we released the code (https://github.com/superfly/init-snapshot), which you can go read.

nixpacks

Posts with mentions or reviews of nixpacks. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-01-16.

What are some alternatives?

When comparing init-snapshot and nixpacks you can also consider the following projects:

sidekiq - Sidekiq worker on Render

web3.storage - DEPRECATED ⁂ The simple file storage service for IPFS & Filecoin

heroku-deploy - A simple github action that dynamically deploys an app to heroku

cog - Containers for machine learning

engine - The Orchestration Engine To Deliver Self-Service Infrastructure Faster ⚡️

piku - The tiniest PaaS you've ever seen. Piku allows you to do git push deployments to your own servers.

Dokku - A docker-powered PaaS that helps you build and manage the lifecycle of applications

templates - Railway starters

copilot-cli - The AWS Copilot CLI is a tool for developers to build, release and operate production ready containerized applications on AWS App Runner or Amazon ECS on AWS Fargate.

wikinewsfeed - News aggregator powered by Wikipedia

decap-cms - A Git-based CMS for Static Site Generators

strapi-railway-deploy