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# OpenStack Container Infra (Magnum) Example
require 'fog/openstack'
# Initialize a connection to the Magnum API
params = {
openstack_auth_url: 'https://example.net/v3/auth/tokens',
openstack_username: 'username',
openstack_api_key: 'password',
openstack_project_name: 'magnum'
}
container_infra = Fog::ContainerInfra::OpenStack.new(params)
# Get the Fedora Atomic image
image = Fog::OpenStack::Image.new(params)
unless image.images.map(&:name).include?("fedora-atomic-latest")
puts "Couldn't find Fedora Atomic. Uploading to Glance..."
fedora = image.images.create name: "fedora-atomic-latest",
disk_format: "qcow2",
visibility: 'public',
container_format: 'bare',
copy_from: 'https://fedorapeople.org/groups/magnum/fedora-atomic-latest.qcow2',
properties: {'os_distro' => 'fedora-atomic'}.to_json
fedora.wait_for { status == "active" }
end
# Create a cluster template for using Docker Swarm and Fedora Atomic
params = {
name: 'swarm-cluster-template',
image_id: 'fedora-atomic-latest',
keypair_id: 'YOUR_KEYPAIR_NAME',
external_network_id: 'public',
master_flavor_id: 'm1.small',
flavor_id: 'm1.small',
coe: 'swarm',
docker_volume_size: 3,
dns_nameserver: '8.8.8.8',
tls_disabled: true
}
cluster_template = container_infra.cluster_templates.create(params)
puts "Created cluster template #{cluster_template.name} (#{cluster_template.uuid})"
# Create a swarm cluster and wait for it to build
params = {
name: 'swarm-cluster',
cluster_template_id: 'swarm-cluster-template',
master_count: 1,
node_count: 1
}
cluster = container_infra.clusters.create(params)
start = Time.now
puts "Building cluster #{cluster.name} (#{cluster.uuid})"
cluster.wait_for { status != 'CREATE_IN_PROGRESS' }
puts "Finished building #{cluster.name} in #{(Time.now - start).round} seconds. Status: #{cluster.status}."
puts "More info: #{cluster.status_reason}" if cluster.status == 'CREATE_FAILED'
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