Unikernels

Sources

Qui suis-je ?

@maxigaud

M aximeGaudin

merde.svbtle.com

Unikernels ?

Specialised Operating System designed for the cloud

But Why ? There is Docker

Fast to boot

Huge Community

Can handle complex topologies (w/ Compose)

Yeah but...

Huge attack surface

Big images

No system optimization

Need host machine

Not so simple to use

	Docker	Unikernel
Boot time	Fast	Fast
Community	Huge	18 personnes (~)
Complex topologies	Nice !	Hypervisor's job !
Attack surface	Do me !	Minimal
Image sizes	What is our mascot again ?	< 70 Mb for Java8
Host	Another machine	Xen
Simple to use	Medium	Easy
Performance	Good	Optimal

Use-cases

Network appliances

Performance critical applications (IO)

Hypervisor dependant infrastructures

Short lived/Sandbox environments

Micro-services ?

How ?

Clive (Go)

HaLVM (Haskell)

LING (Erlang)

MirageOS (OCaml)

OSv

How ?

base: cloudius/osv-openjdk8
cmdline: /java.so -jar /server.jar
build: mvn package
files:
  /server.jar: target/echo-1.0-SNAPSHOT-jar-with-dependencies.jar

STOP !

DEMO TIME

Deployment ?

QEmu

VirtualBox

VMWare

Google Compute Engine

Amazon

Merci !

https://medium.com/@darrenrush/after-docker-unikernels-and-immutable-infrastructure-93d5a91c849e

https://en.wikipedia.org/wiki/Unikernel

https://queue.acm.org/detail.cfm?id=2566628

https://www.linux.com/news/enterprise/cloud-computing/821243-unikernel-use-cases-containers

http://www.skjegstad.com/blog/2015/03/25/mirageos-vm-per-url-experiment/