https://github.com/rubiojr/essex-fog

Fog OpenStack Tutorial, Essex Edition
https://github.com/rubiojr/essex-fog

Last synced: 3 months ago
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Fog OpenStack Tutorial, Essex Edition

Host: GitHub
URL: https://github.com/rubiojr/essex-fog
Owner: rubiojr
Created: 2012-04-28T19:14:03.000Z (about 13 years ago)
Default Branch: master
Last Pushed: 2012-04-29T17:10:35.000Z (about 13 years ago)
Last Synced: 2025-01-26T11:09:24.364Z (5 months ago)
Language: Ruby
Size: 102 KB
Stars: 1
Watchers: 2
Forks: 0
Open Issues: 0
Metadata Files:
- Readme: README.md

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README

# Getting started with Fog and OpenStack Essex

Before we start, make sure you have Essex support in Fog.

Essex support has not been merged into Fog upstream so you'll need
a custom Fog build to work through the tutorial.

Get the custom gem build from http://rubiojr.frameos.org/fog-1.3.1-essex.gem or build fog
yourself from https://github.com/MorphGlobal/fog/tree/morph_merge.

Follow the merge here if you are interested:

https://github.com/fog/fog/issues/848

It's a good idea to have OpenStack clients installed to explore other commands.
You can install them in Ubuntu with the following command:

sudo apt-get install python-novaclient glance-client python-keystoneclient

Let's get started:

require 'fog'

## Connect and authenticate

conn = Fog::Compute.new({
:provider => 'OpenStack',
:openstack_api_key => "changeme",
:openstack_username => "[email protected]",
:openstack_auth_url => "http://auth.myfoobar-stack.net:5000/v2.0/tokens"
})

**openstack_auth_url** is the URL of the Keystone authentication server in this case.

**openstack_api_key** is the password I use to login to the dashboard (Horizon) and use the API.

## Find the server flavor we want.

flavor = conn.flavors.find { |f| f.name == 'm1.tiny' }

m1.tiny has 512 MB of RAM and no additional ephemeral storage. List the flavors available with the command 'nova flavor-list'.

## Find the server image/template we want

image = conn.images.find { |i| i.name == 'ubuntu-precise-amd64' }

List the images available with 'nova image-list' or glance index.

## Create the server

server = conn.servers.create :name => "fooserver-#{Time.now.strftime '%Y%m%d'}",
:image_ref => image.id,
:flavor_ref => flavor.id,
:key_name => 'my-foo-keypair' # optional

This will create the server asynchronously, since waiting for server.ready? is optional.
key_name is optional and is used to inject the specified keypair
to the instance if cloud-init is present. You can then login via SSH without
password, among other things (https://help.ubuntu.com/community/CloudInit)

List currently available keypairs with 'nova keypair-list'

Wait for the server to be ready (optional, wait for state == 'ACTIVE'):

server.wait_for { ready? }

You can also check the status of the server with 'nova list':

conn.servers.each do |s|
puts s.name # server name
puts s.state
puts s.id
end

## Associate a public IP to the server

ip = conn.addresses.find { |ip| ip.instance_id.nil? }

If we find a free IP, not being used by any instance, use that. Otherwise, create it:

if ip.nil?
puts 'Creating IP...'
ip = conn.addresses.create
end

Associate the IP address to the server:

ip.server = server

## Cleanup or regret it, @geemus dixit

ip.destroy
server.destroy

ecosyste.ms

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https://github.com/rubiojr/essex-fog

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