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import configparserfrom os.path import expanduser
from libcloud.compute.base import NodeImagefrom libcloud.compute.providers import get_driverfrom libcloud.compute.types import Provider
home = expanduser("~")
# requirements:# services: EC2# resources: 2 instances (1 keypair, 2 security groups)# optionally also elastic ip (comparable to floating ip) offering a persistent public# IP, but elastic ips are expensive - make sure to delete them after you used them
# The image to look for and use for the started instanceubuntu_image_name = 'ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-server-20210128'# TODO: 18.04, currently still needed for faafo, need to port faafo demo app to 20.04 or higher and python3...
# The public key to be used for SSH connection, please make sure, that you have the corresponding private key
# use existing vockey in AWS Lab env from vocareum, enables login directly# from the lab's terminal:## ssh -i ~/.ssh/labuser.pem ubuntu@<public-ip>
keypair_name = "vockey"
# keypair_name = 'srieger-pub'pub_key_file = home + '/.ssh/id_rsa.pub'
# id_rsa.pub should look like this (standard sshd pubkey format):# ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAw+J...F3w2mleybgT1w== user@HOSTNAME
# flavor_name = 't2.nano'# t2.nano only has 512 MB RAM, pip install will cause out of memory (OOM), install-aws.sh cloud-init script uses swap# to circumvent this issue, but t2.micro is also cheap and has 1 GB RAM which is sufficient for faafo exampleflavor_name = 't2.micro'
# default region# region_name = 'eu-central-1'# region_name = 'ap-south-1'
# AWS Academy Labs only allow us-east-1 see our AWS Academy Lab Guide, https://awsacademy.instructure.com/login/region_name = 'us-east-1'
# starting instances in AWS Academy takes significantly longer compared to paid AWS accounts, allow ~ >2 minutes timeouttimeout = 600
def main(): ########################################################################### # # get credentials # ###########################################################################
# see AWS Academy Lab for Account Details # read credentials from file config = configparser.ConfigParser() config.read_file(open(home + '/.aws/credentials')) aws_access_key_id = config['default']['aws_access_key_id'] aws_secret_access_key = config['default']['aws_secret_access_key'] aws_session_token = config['default']['aws_session_token']
# hard coded AWS credentials using vars # aws_access_key_id = "ASIAX..." # aws_secret_access_key = "WLxxXK+..." # aws_session_token = "FwoGZXIvYXdzEMb//////////wEaDE5rX.......0SleZ+L75I9iEri9LA4hovWul8HvexhCBK8.......................Ae/T+VkUbcQRtJEDwg+gYCABuk0JlSj5Wk7YA65r3BSNJXZFpkhbek6VBjvE/cEt5fKZEhENcdFxjAcAJLd6bOWi/oGXU5e3PX3mcXgm0oJpz6h3wqD1LvSDtw5GDwn0BHiF1Mu.......................cm/VukK5F"
########################################################################### # # create connection # ###########################################################################
provider = get_driver(Provider.EC2) conn = provider(aws_access_key_id, aws_secret_access_key, token=aws_session_token, region=region_name)
########################################################################### # # get image, flavor, network for instance creation # ###########################################################################
print("Search for AMI...") image = conn.list_images(ex_filters={"name": ubuntu_image_name})[0] print("Using image: %s" % image)
# 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...") # 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)
# select image directly to save time, as retrieving the image list takes several minutes now, # need to change ami id here if updated or for other regions, id is working for course in # summer term 2022, in region: us-east-1 and pointing to ubuntu 18.04 used in the instance wizard, # to update AMI id use the create instance wizard and copy amd64 image id for ubuntu 18.04 in the # desired region # image = NodeImage(id="ami-0e472ba40eb589f49", # name=ubuntu_image_name, # driver="hvm")
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-aws.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 (can take several minutes in free AWS' ' academy accounts compared to seconds when using a regular paid AWS account), timeout %i seconds...' % timeout) 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])
wait_until_running_result = conn.wait_until_running(nodes=[instance_controller_1], timeout=timeout, ssh_interface='public_ips') instance_controller_1, node_addresses = wait_until_running_result[0]
########################################################################### # # 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 ;) so I commented out elastic IP creation to # save your AWS academy budget
# 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_controller_1 = conn.list_nodes(ex_node_ids=instance_controller_1.id) public_ip_controller = instance_controller_1.public_ips[0] print('Controller Application %s will be reachable after cloud-init has run at http://%s, you can also connect' % (instance_controller_1.id, public_ip_controller) + ' via ssh ubuntu@%s' % public_ip_controller)
# get private IP of instance to use in worker/service instances to connect to the controller private_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-aws.sh | bash -s -- \ -i faafo -r worker -e 'http://%(ip_controller)s' -m 'amqp://faafo:guest@%(ip_controller)s:5672/' ''' % {'ip_controller': private_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])
wait_until_running_result = conn.wait_until_running(nodes=[instance_worker_1], timeout=timeout, ssh_interface='public_ips') instance_worker_1, node_addresses = wait_until_running_result[0] print('Worker instance %s has private ip: %s ' % (instance_worker_1.id, instance_worker_1.private_ips[0]))
########################################################################### # # 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 ;) so I commented out elastic IP creation to # save your AWS academy budget # 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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