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138 lines
4.8 KiB
138 lines
4.8 KiB
#Python 2 to Python 3 conversion made by "Usama Tahir"
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# Example for Cloud Computing Course Master AI / GSD
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#
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# uses libCloud: https://libcloud.apache.org/
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# libCloud API documentation: https://libcloud.readthedocs.io/en/latest/
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# OpenStack API documentation: https://developer.openstack.org/
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# this code was initially based on the former tutorial: https://developer.openstack.org/firstapp-libcloud/
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import getpass
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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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# Please use 1-29 for X in the following variable to specify your group number. (will be used for the username,
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# project etc., as coordinated in the lab sessions)
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group_number = 30
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########################################################################################################################
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#
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# no changes necessary below this line in this example
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#
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########################################################################################################################
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# web service endpoint of the private cloud infrastructure
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auth_url = 'https://private-cloud.informatik.hs-fulda.de:5000'
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# your username in OpenStack
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auth_username = 'CloudComp' + str(group_number)
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# your project in OpenStack
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project_name = 'CloudComp' + str(group_number)
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# A network in the project the started instance will be attached to
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project_network = 'CloudComp' + str(group_number) + '-net'
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# The image to look for and use for the started instance
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ubuntu_image_name = "Ubuntu 18.04 - Bionic Beaver - 64-bit - Cloud Based Image"
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# TODO: Ubuntu >18.04 would require major updates to faafo example again/better option: complete rewrite of example?
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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 RZ LDAP, e.g., using fdaiXXXX as auth_username
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# domain_name = "default"
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def main():
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# get the password from user
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# auth_password = getpass.getpass("Enter your OpenStack password:")
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auth_password = "demo"
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# instantiate a connection to the OpenStack private cloud
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# make sure to include ex_force_auth_version='3.x_password', as needed in our environment
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provider = get_driver(Provider.OPENSTACK)
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print(("Opening connection to %s as %s..." % (auth_url, auth_username)))
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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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print("Getting images and selecting desired one...")
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print("=========================================================================")
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# get a list of images offered in the cloud context (e.g. Ubuntu 20.04, cirros, ...)
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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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print(img)
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print("Getting flavors...")
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print("=========================================================================")
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# get a list of flavors offered in the cloud context (e.g. m1.small, m1.medium, ...)
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flavors = conn.list_sizes()
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for flavor in flavors:
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print(flavor)
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print("Selecting desired flavor...")
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print("=========================================================================")
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# get the flavor with id 2
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flavor_id = '2'
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flavor = conn.ex_get_size(flavor_id)
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print(flavor)
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print("Selecting desired network...")
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print("=========================================================================")
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# get a list of networks in the cloud context
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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 == project_network:
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network = net
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print("Create instance 'testing'...")
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print("=========================================================================")
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# create a new instance with the name "testing"
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# make sure to provide networks (networks={network}) the instance should be attached to
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instance_name = 'testing'
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testing_instance = conn.create_node(name=instance_name, image=image, size=flavor, networks={network})
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print(testing_instance)
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print("Showing all running instances...")
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print("=========================================================================")
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# show all instances (running nodes) in the cloud context
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instances = conn.list_nodes()
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for instance in instances:
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print(instance)
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print("Destroying instance...")
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print("=========================================================================")
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# destroy the instance we have just created
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conn.destroy_node(testing_instance)
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# method that is called when the script is started from the command line
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if __name__ == '__main__':
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main()
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