OpenStack - Launch your First VM

Some notes on how to get started with a freshly baked OpenStack (Liberty)

• First, an image needs to be uploaded:

wget -qO - http://download.cirros-cloud.net/0.3.5/cirros-0.3.5-x86_64-disk.img | openstack image create cirros --public --container-format=bare --disk-format=qcow2

• Then we need to create a network:

openstack network create testnetwork

• Within the network, a subnet needs to be created:

neutron subnet-create --name testsubnet testnetwork 192.168.37.0/24

• Please note that a more recent version of OpenStack might support the openstack subnet create command as well.

• Let's create a router now:

neutron router-create testrouter

• Now set the router's default gateway by connecting it to a network:

neutron router-gateway-set testrouter floating

• And link the router to the subnet:

neutron router-interface-add testrouter testsubnet

• Now launch your instance:

nova boot --flavor m1.tiny --image cirros --nic net-id=a6a6c271-a391-4bff-9eda-79a97a8e1154 i1

• Create a floating IP:

neutron floatingip-create floating
nova floating-ip-associate i1 192.168.122.131

• Add rules to security group for icmp and ssh

openstack security group rule create --proto icmp default
openstack security group rule create --proto tcp --dst-port 22:22 default