cloud-computing-msc-ai-examples/demo4-scale-out-add-worker.py

# import getpass
# import os
# import libcloud.security

import time
from libcloud.compute.providers import get_driver
from libcloud.compute.types import Provider

# reqs:
#   services: nova, glance, neutron
#   resources: 2 instances (m1.small), 2 floating ips (1 keypair, 2 security groups)

# 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"
#ubuntu_image_name = "Ubuntu 18.04 - Bionic Beaver - 64-bit - Cloud Based Image"

flavor_name = 'm1.small'

network_name = "CloudCompGrpX-net"

keypair_name = 'srieger-pub'
pub_key_file = '~/.ssh/id_rsa.pub'

api_1_ip  = "192.168.0.x"
services_ip = "192.168.0.y"


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
    #
    ###########################################################################

    # libcloud.security.VERIFY_SSL_CERT = False

    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)

    ###########################################################################
    #
    # create worker instances
    #
    ###########################################################################

    userdata_worker = '''#!/usr/bin/env bash
    curl -L -s https://git.openstack.org/cgit/openstack/faafo/plain/contrib/install.sh | bash -s -- \
        -i faafo -r worker -e 'http://%(api_1_ip)s' -m 'amqp://guest:guest@%(services_ip)s:5672/'
    ''' % {'api_1_ip': api_1_ip, 'services_ip': services_ip}

    # userdata-api-2 = '''#!/usr/bin/env bash
    # curl -L -s https://git.openstack.org/cgit/openstack/faafo/plain/contrib/install.sh | bash -s -- \
    #     -i faafo -r worker -e 'http://%(api_2_ip)s' -m 'amqp://guest: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])

if __name__ == '__main__':
    main()