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"""Example for Cloud Computing Course Master AI / GSD"""
# This script demonstrates how to use libcloud to start an instance in an OpenStack environment.# The script will add an additional worker to a running faafo example application
# Needed if the password should be prompted for:# import getpassimport osimport sys# import time
from libcloud.compute.providers import get_driverfrom libcloud.compute.types import Provider
# For our new Charmed OpenStack private cloud, we need to specify the path to the root# CA certificateimport libcloud.securitylibcloud.security.CA_CERTS_PATH = ['./root-ca.crt']# Disable SSL certificate verification (not recommended for production)# libcloud.security.VERIFY_SSL_CERT = False
# Please use 1-29 as environment variable GROUP_NUMBER to specify your group number.# (will be used for the username, project etc., as coordinated in the lab sessions)
group_number = os.environ.get('GROUP_NUMBER')if group_number is None: sys.exit('Please set the GROUP_NUMBER environment variable to your group number,\n' 'e.g., on Windows:\n' ' "$env:GROUP_NUMBER=0" or "set GROUP_NUMBER=0"\n' 'or on Linux/MacOS:\n' ' "export GROUP_NUMBER=0" or "set GROUP_NUMBER=0"')
# web service endpoint of the private cloud infrastructure# auth_url = 'https://private-cloud.informatik.hs-fulda.de:5000'AUTH_URL = 'https://10.32.4.182:5000'# auth_url = 'https://private-cloud2.informatik.hs-fulda.de:5000'# your username in OpenStackAUTH_USERNAME = 'CloudComp' + str(group_number)print(f'Using username: {AUTH_USERNAME}\n')# 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 instance# ubuntu_image_name = "Ubuntu 18.04 - Bionic Beaver - 64-bit - Cloud Based Image"#UBUNTU_IMAGE_NAME = "auto-sync/ubuntu-jammy-22.04-amd64-server-20240319-disk1.img"UBUNTU_IMAGE_NAME = "ubuntu-22.04-jammy-x86_64"
# 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@HOSTNAMEKEYPAIR_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, formerly "hsfulda" for LDAP accounts etc.# domain_name = "default"
def main(): # noqa: C901 pylint: disable=too-many-branches,too-many-statements,too-many-locals,missing-function-docstring ########################################################################### # # 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
########################################################################### # # get fixed a ip for service and api instance # (better would be shared IP for the cluster etc.) # ###########################################################################
# find service instance for instance in conn.list_nodes(): if instance.name == 'app-services': services_ip = instance.private_ips[0] print(('Found app-services fixed IP to be: ', services_ip)) if instance.name == 'app-api-1': api_1_ip = instance.private_ips[0] print(('Found app-api-1 fixed IP to be: ', api_1_ip))
########################################################################### # # 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 # ###########################################################################
def get_security_group(connection, security_group_name): """A helper function to check if security group already exists""" print(('Checking for existing ' + security_group_name + ' security group...')) for security_grp in connection.ex_list_security_groups(): if security_grp.name == security_group_name: print(('Security Group ' + security_group_name + ' already exists. Skipping creation.')) return security_grp return False
if not get_security_group(conn, "worker"): worker_security_group = conn.ex_create_security_group( 'worker', 'for services that run on a worker node') conn.ex_create_security_group_rule(worker_security_group, 'TCP', 22, 22) else: worker_security_group = get_security_group(conn, "worker")
for security_group in conn.ex_list_security_groups(): print(security_group)
########################################################################### # # create worker instances # ###########################################################################
userdata_worker = '#!/usr/bin/env bash\n' \ 'curl -L -s https://gogs.informatik.hs-fulda.de/srieger/' \ 'cloud-computing-msc-ai-examples/raw/master/faafo/contrib/' \ 'install.sh | bash -s -- ' \ f'-i faafo -r worker -e "http://{api_1_ip}" '\ f'-m "amqp://faafo:guest@{services_ip}:5672/"' print('\nUsing cloud-init userdata for worker:\n"' + userdata_worker + '"\n')
# userdata-api-2 = '''#!/usr/bin/env bash # curl -L -s ''' + hsfd_faafo_cloud_init_script + ''' | bash -s -- \ # -i faafo -r worker -e 'http://%(api_2_ip)s' -m 'amqp://faafo:guest@%(services_ip)s:5672/' # ''' % {'api_2_ip': api_2_ip, 'services_ip': services_ip}
print('Starting new app-worker-3 instance and wait until it is running...') instance_worker_3 = conn.create_node(name='app-worker-3', image=image, size=flavor, networks=[network], ex_keyname=KEYPAIR_NAME, ex_userdata=userdata_worker, ex_security_groups=[worker_security_group])
print(instance_worker_3)
if __name__ == '__main__': main()
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