7 changed files with 1161 additions and 957 deletions
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BINaws-cloudformation-demo/cloudcomp-counter-demo-with-vpc-designer.png
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11demo3-microservice.py
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179demo4-scale-out-add-worker.py
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4demo4-scale-out-destroy.py
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48demo4-scale-out.py
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# import getpass |
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# import os |
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# import libcloud.security |
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import time |
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from libcloud.compute.providers import get_driver |
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from libcloud.compute.types import Provider |
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# reqs: |
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# services: nova, glance, neutron |
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# resources: 2 instances (m1.small), 2 floating ips (1 keypair, 2 security groups) |
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# Please use 1-25 for X in username, project etc., as coordinated in the lab sessions |
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# web service endpoint of the private cloud infrastructure |
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auth_url = 'https://private-cloud2.informatik.hs-fulda.de:5000' |
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# your username in OpenStack |
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auth_username = 'CloudCompX' |
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# your project in OpenStack |
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project_name = 'CloudCompGrpX' |
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# default region |
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region_name = 'RegionOne' |
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# domain to use, "default" for local accounts, "hsfulda" for LDAP of DVZ, e.g., using fdaiXXXX as auth_username |
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domain_name = "default" |
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ubuntu_image_name = "Ubuntu 14.04 - Trusty Tahr - 64-bit - Cloud Based Image" |
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#ubuntu_image_name = "Ubuntu 18.04 - Bionic Beaver - 64-bit - Cloud Based Image" |
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flavor_name = 'm1.small' |
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network_name = "CloudCompGrpX-net" |
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keypair_name = 'srieger-pub' |
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pub_key_file = '~/.ssh/id_rsa.pub' |
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def main(): |
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########################################################################### |
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# |
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# get credentials |
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# |
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########################################################################### |
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# if "OS_PASSWORD" in os.environ: |
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# auth_password = os.environ["OS_PASSWORD"] |
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# else: |
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# auth_password = getpass.getpass("Enter your OpenStack password:") |
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auth_password = "demo" |
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########################################################################### |
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# |
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# create connection |
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# |
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########################################################################### |
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# libcloud.security.VERIFY_SSL_CERT = False |
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provider = get_driver(Provider.OPENSTACK) |
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conn = provider(auth_username, |
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auth_password, |
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ex_force_auth_url=auth_url, |
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ex_force_auth_version='3.x_password', |
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ex_tenant_name=project_name, |
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ex_force_service_region=region_name, |
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ex_domain_name=domain_name) |
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########################################################################### |
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# |
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# get image, flavor, network for instance creation |
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# |
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########################################################################### |
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images = conn.list_images() |
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image = '' |
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for img in images: |
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if img.name == ubuntu_image_name: |
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image = img |
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flavors = conn.list_sizes() |
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flavor = '' |
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for flav in flavors: |
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if flav.name == flavor_name: |
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flavor = conn.ex_get_size(flav.id) |
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networks = conn.ex_list_networks() |
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network = '' |
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for net in networks: |
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if net.name == network_name: |
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network = net |
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########################################################################### |
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# |
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# get fixed a ip for serivice and api instance |
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# (better would be shared IP for the cluster etc.) |
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# |
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########################################################################### |
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# find service instance |
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for instance in conn.list_nodes(): |
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if instance.name == 'app-services': |
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services_ip = instance.private_ips[0] |
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print('Found app-services fixed IP to be: ', services_ip) |
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if instance.name == 'app-api-1': |
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api_1_ip = instance.private_ips[0] |
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print('Found app-api-1 fixed IP to be: ', api_1_ip) |
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########################################################################### |
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# |
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# create keypair dependency |
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# |
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########################################################################### |
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print('Checking for existing SSH key pair...') |
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keypair_exists = False |
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for keypair in conn.list_key_pairs(): |
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if keypair.name == keypair_name: |
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keypair_exists = True |
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if keypair_exists: |
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print('Keypair ' + keypair_name + ' already exists. Skipping import.') |
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else: |
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print('adding keypair...') |
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conn.import_key_pair_from_file(keypair_name, pub_key_file) |
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for keypair in conn.list_key_pairs(): |
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print(keypair) |
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########################################################################### |
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# |
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# create security group dependency |
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# |
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########################################################################### |
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def get_security_group(connection, security_group_name): |
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"""A helper function to check if security group already exists""" |
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print('Checking for existing ' + security_group_name + ' security group...') |
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for security_grp in connection.ex_list_security_groups(): |
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if security_grp.name == security_group_name: |
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print('Security Group ' + security_group_name + ' already exists. Skipping creation.') |
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return security_grp |
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return False |
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if not get_security_group(conn, "worker"): |
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worker_security_group = conn.ex_create_security_group('worker', 'for services that run on a worker node') |
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conn.ex_create_security_group_rule(worker_security_group, 'TCP', 22, 22) |
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else: |
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worker_security_group = get_security_group(conn, "worker") |
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for security_group in conn.ex_list_security_groups(): |
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print(security_group) |
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########################################################################### |
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# |
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# create worker instances |
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# |
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########################################################################### |
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userdata_worker = '''#!/usr/bin/env bash |
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curl -L -s https://git.openstack.org/cgit/openstack/faafo/plain/contrib/install.sh | bash -s -- \ |
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-i faafo -r worker -e 'http://%(api_1_ip)s' -m 'amqp://guest:guest@%(services_ip)s:5672/' |
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''' % {'api_1_ip': api_1_ip, 'services_ip': services_ip} |
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# userdata-api-2 = '''#!/usr/bin/env bash |
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# curl -L -s https://git.openstack.org/cgit/openstack/faafo/plain/contrib/install.sh | bash -s -- \ |
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# -i faafo -r worker -e 'http://%(api_2_ip)s' -m 'amqp://guest:guest@%(services_ip)s:5672/' |
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# ''' % {'api_2_ip': api_2_ip, 'services_ip': services_ip} |
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print('Starting new app-worker-3 instance and wait until it is running...') |
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instance_worker_3 = conn.create_node(name='app-worker-3', |
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image=image, size=flavor, |
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networks=[network], |
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ex_keyname=keypair_name, |
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ex_userdata=userdata_worker, |
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ex_security_groups=[worker_security_group]) |
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if __name__ == '__main__': |
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main() |
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