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# import getpass# import os
from libcloud.compute.providers import get_driverfrom libcloud.compute.types import Provider
# Please use 1-29 for X in the following variable to specify your group number. (will be used for the username,# project etc., as coordinated in the lab sessions)
group_number = 30
# web service endpoint of the private cloud infrastructureauth_url = 'https://private-cloud.informatik.hs-fulda.de:5000'# your username in OpenStackauth_username = 'CloudComp' + str(group_number)# your project in OpenStackproject_name = 'CloudComp' + str(group_number)# A network in the project the started instance will be attached toproject_network = 'CloudComp' + str(group_number) + '-net'
# The image to look for and use for the started instanceubuntu_image_name = "Ubuntu 18.04 - Bionic Beaver - 64-bit - Cloud Based Image"
# 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 = 'm1.small'
# default regionregion_name = 'RegionOne'# domain to use, "default" for local accounts, "hsfulda" for RZ LDAP, e.g., using fdaiXXXX as auth_usernamedomain_name = "default"
def main(): ########################################################################### # # get credentials # ###########################################################################
# if "OS_PASSWORD" in os.environ: # auth_password = os.environ["OS_PASSWORD"] # else: # auth_password = getpass.getpass("Enter your OpenStack password:") auth_password = "demo"
########################################################################### # # create connection # ###########################################################################
provider = get_driver(Provider.OPENSTACK) conn = provider(auth_username, auth_password, ex_force_auth_url=auth_url, ex_force_auth_version='3.x_password', ex_tenant_name=project_name, ex_force_service_region=region_name, ex_domain_name=domain_name)
########################################################################### # # get image, flavor, network for instance creation # ########################################################################### images = conn.list_images() image = '' for img in images: if img.name == ubuntu_image_name: image = img
flavors = conn.list_sizes() flavor = '' for flav in flavors: if flav.name == flavor_name: flavor = conn.ex_get_size(flav.id)
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 security group...') security_group_name = 'all-in-one' security_group_exists = False all_in_one_security_group = '' for security_group in conn.ex_list_security_groups(): if security_group.name == security_group_name: all_in_one_security_group = security_group security_group_exists = True
if security_group_exists: print('Security Group ' + all_in_one_security_group.name + ' already exists. Skipping creation.') else: all_in_one_security_group = conn.ex_create_security_group(security_group_name, 'network access for all-in-one application.') conn.ex_create_security_group_rule(all_in_one_security_group, 'TCP', 80, 80) conn.ex_create_security_group_rule(all_in_one_security_group, 'TCP', 22, 22)
for security_group in conn.ex_list_security_groups(): print(security_group)
########################################################################### # # create all-in-one instance # ###########################################################################
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 -i messaging -r api -r worker -r demo '''
print('Checking for existing instance...') instance_name = 'all-in-one' instance_exists = False testing_instance = '' for instance in conn.list_nodes(): if instance.name == instance_name: testing_instance = instance instance_exists = True
if instance_exists: print('Instance ' + testing_instance.name + ' already exists. Skipping creation.') else: print('Starting new all-in-one instance and wait until it is running...') testing_instance = conn.create_node(name=instance_name, image=image, size=flavor, networks=[network], ex_keyname=keypair_name, ex_userdata=userdata, ex_security_groups=[all_in_one_security_group]) conn.wait_until_running(nodes=[testing_instance], timeout=120, ssh_interface='private_ips')
########################################################################### # # assign all-in-one instance floating ip # ###########################################################################
private_ip = None if len(testing_instance.private_ips): private_ip = testing_instance.private_ips[0] print('Private IP found: {}'.format(private_ip))
public_ip = None if len(testing_instance.public_ips): public_ip = testing_instance.public_ips[0] print('Public IP found: {}'.format(public_ip))
print('Checking for unused Floating IP...') unused_floating_ip = None for floating_ip in conn.ex_list_floating_ips(): if not floating_ip.node_id: unused_floating_ip = floating_ip break
if not unused_floating_ip and len(conn.ex_list_floating_ip_pools()): pool = conn.ex_list_floating_ip_pools()[0] print('Allocating new Floating IP from pool: {}'.format(pool)) unused_floating_ip = pool.create_floating_ip()
if public_ip: print('Instance ' + testing_instance.name + ' already has a public ip. Skipping attachment.') elif unused_floating_ip: conn.ex_attach_floating_ip_to_node(testing_instance, unused_floating_ip)
actual_ip_address = None if public_ip: actual_ip_address = public_ip elif unused_floating_ip: actual_ip_address = unused_floating_ip.ip_address elif private_ip: actual_ip_address = private_ip
print('The Fractals app will be deployed to http://{}'.format(actual_ip_address))
print('You can use ssh to login to the instance 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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