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stop.py

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  • demo2-instance-with-init-script.py 7.29 KiB
    import getpass
    
    import os
    from libcloud.compute.providers import get_driver
    from libcloud.compute.types import Provider
    
    # Please use 1-25 for X in username, project etc., as coordinated in the lab sessions
    
    # web service endpoint of the private cloud infrastructure
    auth_url = 'https://private-cloud2.informatik.hs-fulda.de:5000'
    # your username in OpenStack
    auth_username = 'CloudCompX'
    # your project in OpenStack
    project_name = 'CloudCompGrpX'
    
    # default region
    region_name = 'RegionOne'
    # domain to use, "default" for local accounts, "hsfulda" for LDAP of DVZ, e.g., using fdaiXXXX as auth_username
    domain_name = "default"
    
    ubuntu_image_name = "Ubuntu 14.04 - Trusty Tahr - 64-bit - Cloud Based Image"
    
    flavor_name = 'm1.small'
    
    network_name = "ai-netlab-pro-net"
    
    keypair_name = 'srieger-pub'
    pub_key_file = '~/.ssh/id_rsa.pub'
    
    
    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 == network_name:
                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://git.openstack.org/cgit/openstack/faafo/plain/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))
    
    
    if __name__ == '__main__':
        main()