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import getpass# import os
from libcloud.compute.providers import get_driverfrom libcloud.compute.types import Provider
# reqs:# services: EC2 (nova, glance, neutron)# resources: 2 instances, 2 elastic ips (1 keypair, 2 security groups)
# The image to look for and use for the started instanceubuntu_image_name = 'ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-server-20200408'# ubuntu_image_id = "ami-0e342d72b12109f91" # local ami id for resent ubuntu 18.04 20200408 in eu-central-1
# The public key to be used for SSH connection, please make sure, that you have the corresponding private key## id_rsa.pub should look like this (standard sshd pubkey format):# ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAw+J...F3w2mleybgT1w== user@HOSTNAME
keypair_name = 'srieger-pub'pub_key_file = '~/.ssh/id_rsa.pub'
flavor_name = 't2.nano'
# default region# region_name = 'eu-central-1'# region_name = 'ap-south-1'
# AWS Educate only allows us-east-1 see our AWS classroom at https://www.awseducate.com# e.g., https://www.awseducate.com/student/s/launch-classroom?classroomId=a1v3m000005mNm6AAE
region_name = 'us-east-1'
def main(): ########################################################################### # # get credentials # ###########################################################################
# see AWS Educate classroom, Account Details
# access_id = getpass.win_getpass("Enter your access_id:") # secret_key = getpass.win_getpass("Enter your secret_key:") # session_token = getpass.win_getpass("Enter your session_token:") access_id = "ASIAU..." secret_key = "7lafW..." session_token = "IQoJb3JpZ...EMb//..."
########################################################################### # # create connection # ###########################################################################
provider = get_driver(Provider.EC2) conn = provider(access_id, secret_key, token=session_token, region=region_name)
########################################################################### # # get image, flavor, network for instance creation # ###########################################################################
print("Fetching images (AMI) list from AWS region. This will take a lot of seconds (AWS has a very long list of " "supported operating systems and versions)... please be patient...") images = conn.list_images()
# image = '' # for img in images: # # if img.name == ubuntu_image_name: # if img.extra['owner_alias'] == 'amazon': # print(img) # if img.id == ubuntu_image_name: # image = img
# fetch/select the image referenced with ubuntu_image_name above image = [i for i in images if i.name == ubuntu_image_name][0] print(image)
flavors = conn.list_sizes() flavor = [s for s in flavors if s.id == flavor_name][0] print(flavor)
# networks = conn.ex_list_networks() # network = '' # for net in networks: # if net.name == project_network: # network = net
########################################################################### # # create keypair dependency # ###########################################################################
print('Checking for existing SSH key pair...') keypair_exists = False for keypair in conn.list_key_pairs(): if keypair.name == keypair_name: keypair_exists = True
if keypair_exists: print('Keypair ' + keypair_name + ' already exists. Skipping import.') else: print('adding keypair...') conn.import_key_pair_from_file(keypair_name, pub_key_file)
for keypair in conn.list_key_pairs(): print(keypair)
########################################################################### # # create security group dependency # ###########################################################################
print('Checking for existing worker security group...') worker_security_group_exists = False worker_security_group_name = 'worker' for security_group in conn.ex_get_security_groups(): if security_group.name == worker_security_group_name: worker_security_group_id = security_group.id worker_security_group_exists = True
if worker_security_group_exists: print('Worker Security Group ' + worker_security_group_name + ' already exists. Skipping creation.') else: worker_security_group_result = conn.ex_create_security_group('worker', 'for services that run on a worker node') worker_security_group_id = worker_security_group_result['group_id'] conn.ex_authorize_security_group_ingress(worker_security_group_id, 22, 22, cidr_ips=['0.0.0.0/0'], protocol='tcp')
print('Checking for existing controller security group...') controller_security_group_exists = False controller_security_group_name = 'control' controller_security_group_id = '' for security_group in conn.ex_get_security_groups(): if security_group.name == controller_security_group_name: controller_security_group_id = security_group.id controller_security_group_exists = True
if controller_security_group_exists: print('Controller Security Group ' + controller_security_group_name + ' already exists. Skipping creation.') else: controller_security_group_result = conn.ex_create_security_group('control', 'for services that run on a control node') controller_security_group_id = controller_security_group_result['group_id'] conn.ex_authorize_security_group_ingress(controller_security_group_id, 22, 22, cidr_ips=['0.0.0.0/0'], protocol='tcp') conn.ex_authorize_security_group_ingress(controller_security_group_id, 80, 80, cidr_ips=['0.0.0.0/0'], protocol='tcp') conn.ex_authorize_security_group_ingress(controller_security_group_id, 5672, 5672, group_pairs=[{'group_id': worker_security_group_id}], protocol='tcp')
# for security_group in conn.ex_list_security_groups(): # print(security_group)
########################################################################### # # create app-controller # ###########################################################################
# https://git.openstack.org/cgit/openstack/faafo/plain/contrib/install.sh # is currently broken, hence the "rabbitctl" lines were added in the example # below, see also https://bugs.launchpad.net/faafo/+bug/1679710 # # Thanks to Stefan Friedmann for finding this fix ;)
userdata = '''#!/usr/bin/env bash
curl -L -s https://gogs.informatik.hs-fulda.de/srieger/cloud-computing-msc-ai-examples/raw/master/faafo/contrib/install.sh | bash -s -- \ -i messaging -i faafo -r api rabbitmqctl add_user faafo guest rabbitmqctl set_user_tags faafo administrator rabbitmqctl set_permissions -p / faafo ".*" ".*" ".*" '''
print('Starting new app-controller instance and wait until it is running...') instance_controller_1 = conn.create_node(name='app-controller', image=image, size=flavor, ex_keyname=keypair_name, ex_userdata=userdata, ex_security_groups=[controller_security_group_name])
conn.wait_until_running(nodes=[instance_controller_1], timeout=120, ssh_interface='public_ips')
########################################################################### # # assign app-controller elastic ip # ###########################################################################
# AWS offers elastic ips, that have the same function as floating IPs in OpenStack. However elastic IPs cost money, # and instances typically already have public IP in AWS, what a luxury ;) print('Checking for unused Elastic IP...') unused_elastic_ip = None for elastic_ip in conn.ex_describe_all_addresses(): if not elastic_ip.instance_id: unused_elastic_ip = elastic_ip break
if not unused_elastic_ip: print('Allocating new Elastic IP') unused_elastic_ip = conn.ex_allocate_address() conn.ex_associate_address_with_node(instance_controller_1, unused_elastic_ip) print('Controller Application will be deployed to http://%s' % unused_elastic_ip.ip)
########################################################################### # # getting id and ip address of app-controller instance # ###########################################################################
# instance should not have a public ip? floating ips are assigned later # instance_controller_1 = conn.ex_get_node_details(instance_controller_1.id) # if instance_controller_1.public_ips: # ip_controller = instance_controller_1.public_ips[0] # else: ip_controller = instance_controller_1.private_ips[0]
########################################################################### # # create app-worker-1 # ###########################################################################
userdata = '''#!/usr/bin/env bash
curl -L -s https://gogs.informatik.hs-fulda.de/srieger/cloud-computing-msc-ai-examples/raw/master/faafo/contrib/install.sh | bash -s -- \ -i faafo -r worker -e 'http://%(ip_controller)s' -m 'amqp://faafo:guest@%(ip_controller)s:5672/' ''' % {'ip_controller': ip_controller}
print('Starting new app-worker-1 instance and wait until it is running...') instance_worker_1 = conn.create_node(name='app-worker-1', image=image, size=flavor, ex_keyname=keypair_name, ex_userdata=userdata, ex_security_groups=[worker_security_group_name])
conn.wait_until_running(nodes=[instance_worker_1], timeout=120, ssh_interface='public_ips')
########################################################################### # # assign app-worker elastic ip # ###########################################################################
# AWS offers elastic ips, that have the same function as floating IPs in OpenStack. However elastic IPs cost money, # and instances typically already have public IP in AWS, what a luxury ;) print('Checking for unused Elastic IP...') unused_elastic_ip = None for elastic_ip in conn.ex_describe_all_addresses(): if not elastic_ip.instance_id: unused_elastic_ip = elastic_ip break
if not unused_elastic_ip: print('Allocating new Elastic IP') unused_elastic_ip = conn.ex_allocate_address() conn.ex_associate_address_with_node(instance_worker_1, unused_elastic_ip) print('The worker will be available for SSH at %s' % unused_elastic_ip.ip)
print('You can use ssh to login to the controller using your private key. After login, you can list available ' 'fractals using "faafo list". To request the generation of new fractals, you can use "faafo create". ' 'You can also see other options to use the faafo example cloud service using "faafo -h".')
if __name__ == '__main__': main()
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