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Unikraft

DORS/CLUC 24, Zagreb, May 15-19, 2024

Răzvan Deaconescu <razvand@unikraft.org>

A POSIX-Compliant Unikernel for the Cloud

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KraftCloud

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KraftCloud

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build

package

push

pull

unpack

run

Application Workflows

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Using VMs & Containers

run everywhere

no dependency issues

isolation

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VMs

overhead
difficult to create recipes

good isolation
good resource control

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Containers

isolation issues
often provisioned inside VMs

recipes (Dockerfile)
registries (DockerHub)
tooling (Docker, Podman)
good performance

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What We Want

good isolation
recipes
registries
tooling
good performance
deployment on cloud: fast, low cost, scale

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Unikernels in the Cloud

good isolation: VMs
recipes: Dockerfile, Kraftfile, compose.yaml
registry: Unikraft OCI images
tooling: KraftKit
good performance, extreme specialization: Unikraft
cloud deployment done right: KraftCloud

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Application Support

languages: Go, Python, JavaScript, Java, Rust, C, C++, Ruby, Per, PHP, .NET …

frameworks: Flask, Django, Rails, SpringBoot, Tokio, Rocket, Boost, NextJS …

databases: SQLite, MariaDB, MongoDB, DragonflyDB, Memcached, Redis …

web / proxies: Nginx, Traefik, Caddy, Skipper, HAproxy …

https://github.com/unikraft/catalog

h ttps://github.com/kraftcloud/examples

other apps: Hugo, Bun, Minio, Llama2, WASM, Imaginary …

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build with

run with

deploy on

KraftKit

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March 2021

September 2022

939 GitHub Stars

~ 200 GitHub stars

~ 100 Mattermost users

455 Discord users

5 releases (since 2017)

10 releases

avg. 34 commits/month

avg. 31 commits/month

avg. 3400 LoC/month

avg. 2800 LoC/month

July 2023

1435 GitHub Stars

997 Discord users

13 releases (14 soon)

avg. 34 commits/month

avg. 2700 LoC/month

May 2024

2353 GitHub Stars

1467 Discord users

16 releases (17 soon)

avg. 40 commits/month

avg. 2421 LoC/month

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Unikraft POSIX Compatibility

…

socket()

…

SYS_socket

…

syscall_shim

posix-socket

lwip

app ELF

libc ELF

unikraft

unikraft core support libs

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KraftKit

Unikraft companion tool

configure, build, setup, run, package, pull, push, deploy

Golang

Docker, BuildKit, Compose, K8s, Terraform

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The only unikernel platform: millisecond cold starts, autoscale & scale to zero

The only “don’t pay for idle” platform

The simplest and most elegant way to manage bursty workloads

kraftcloud

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KraftCloud

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Zagreb Unikraft Hackathon

Saturday + Sunday, May 18-19, 2024

1 day training / tutoring, 1 day your app / project

deployment on KraftCloud, publish your idea as open source

hacking, pizza, team work, mentoring

https://unikraft.org/hackathons/2024-05-zagreb

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KraftCloud: http://kraft.cloud/

Docs: https://docs.kraft.cloud/

Unikraft: https://unikraft.org/

Discord: https://bit.ly/UnikraftDiscord

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Unikernels in the Cloud

good isolation: VMs
recipes: Dockerfile, Kraftfile, compose.yaml
registry: Unikraft OCI images
tooling: KraftKit
good performance, extreme specialization: Unikraft
cloud deployment done right: KraftCloud

http://kraft.cloud/

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