New Nova hypervisor in HavanaDeploy Containers instead of VMs

by Sam Alba@sam_alba

sam@dotcloud.com

Sep 2013

What is all of that?● Nova is a computing controller for OpenStack

● Havana is the name of the next release (10/17/2013)

● Nova already supports several hypervisors:○ KVM (through qemu), Xen, VMWare, HyperV, PowerVM, etc...

○ Docker

Sep 2013

Nova is not just for Virtual Machines...it’s a computing controller!

Under the hood...

Sep 2013

Source: https://wiki.openstack.org/wiki/Docker

How to use it? (with DevStack)

Sep 2013

Prerequisites:● Ubuntu Precise 12.04

● Kernel >3.2 supporting AUFS

● >=1.5 GB of RAM available

● Check that socat and git installed

sudo apt-get install socat git

How to use it? (with DevStack)

Sep 2013

Install devstack and docker

… and test that everything went well

git clone https://github.com/openstack-dev/devstack.git

cd devstack

echo VIRT_DRIVER=docker >> localrc

./tools/docker/install_docker.sh

./stack.sh

./exercises/docker.sh

How to use it? (with DevStack)

Sep 2013

Start a container!

cd devstack

. openrc

nova boot --image "docker-busybox:latest" \

--flavor m1.nano myinstance

nova show myinstance

docker ps

How to use it? (with DevStack)

Sep 2013

Use public images!

It requires to duplicate images to Glance (by using docker)

cd devstack

. openrc

docker pull vieux/goplay

HOST_IP=$(docker images | grep :5042/docker-busybox \

| cut -d: -f1)

docker tag vieux/goplay $HOST_IP:5042/vieux/goplay

docker push $HOST_IP:5042/vieux/goplay

Horizon (web UI)Launch a new instance...

Sep 2013

Horizon (web UI)Launch a new instance...

Sep 2013

Questions?

Sep 2013

Run it yourself!

Sep 2013

Read the documentation:https://wiki.openstack.org/wiki/Docker

… and please ask for help:#docker on irc.freenode.org