adapted demos for new Charmed OpenStack environment

CloudComp-openrc

@@ -0,0 +1,47 @@
+#!/usr/bin/env bash
+# To use an OpenStack cloud you need to authenticate against the Identity
+# service named keystone, which returns a **Token** and **Service Catalog**.
+# The catalog contains the endpoints for all services the user/tenant has
+# access to - such as Compute, Image Service, Identity, Object Storage, Block
+# Storage, and Networking (code-named nova, glance, keystone, swift,
+# cinder, and neutron).
+
+# unset all OPENSTACK ENV VARS
+unset $(env | grep OS_ | cut -d "=" -f 1)
+
+export OS_CACERT=./root-ca.crt
+export GROUP_NUMBER=0
+
+#
+# *NOTE*: Using the 3 *Identity API* does not necessarily mean any other
+# OpenStack API is version 3. For example, your cloud provider may implement
+# Image API v1.1, Block Storage API v2, and Compute API v2.0. OS_AUTH_URL is
+# only for the Identity API served through keystone.
+export OS_AUTH_URL=https://10.32.4.182:5000/v3
+# With the addition of Keystone we have standardized on the term **project**
+# as the entity that owns the resources.
+#export OS_PROJECT_ID=bba62cf6bf0b447491829d207e1b05f9
+export OS_PROJECT_NAME="CloudComp$GROUP_NUMBER"
+unset OS_DOMAIN_NAME
+export OS_USER_DOMAIN_NAME="Default"
+if [ -z "$OS_USER_DOMAIN_NAME" ]; then unset OS_USER_DOMAIN_NAME; fi
+export OS_PROJECT_DOMAIN_ID="default"
+if [ -z "$OS_PROJECT_DOMAIN_ID" ]; then unset OS_PROJECT_DOMAIN_ID; fi
+# unset v2.0 items in case set
+unset OS_TENANT_ID
+unset OS_TENANT_NAME
+# In addition to the owning entity (tenant), OpenStack stores the entity
+# performing the action as the **user**.
+export OS_USERNAME="CloudComp$GROUP_NUMBER"
+# With Keystone you pass the keystone password.
+#echo "Please enter your OpenStack Password for project $OS_PROJECT_NAME as user $OS_USERNAME: "
+#read -sr OS_PASSWORD_INPUT
+#export OS_PASSWORD=$OS_PASSWORD_INPUT
+export OS_PASSWORD="demo"
+# If your configuration has multiple regions, we set that information here.
+# OS_REGION_NAME is optional and only valid in certain environments.
+export OS_REGION_NAME="RegionOne"
+# Don't leave a blank variable, unset it if it was empty
+if [ -z "$OS_REGION_NAME" ]; then unset OS_REGION_NAME; fi
+export OS_INTERFACE=public
+export OS_IDENTITY_API_VERSION=3

demo1_getting_started.py

@@ -0,0 +1,144 @@
+"""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 start an instance, list all instances, and then destroy the instance again.
+#
+# The script uses the libcloud library to interact with the OpenStack API.
+# Need to install libcloud first: pip install apache-libcloud
+#
+# libCloud: https://libcloud.apache.org/
+# libCloud API documentation: https://libcloud.readthedocs.io/en/latest/
+# OpenStack API documentation: https://developer.openstack.org/
+# this code was initially based on the former tutorial:
+#   https://developer.openstack.org/firstapp-libcloud/
+
+# Only needed for the password prompt:
+# import getpass
+
+from libcloud.compute.providers import get_driver
+from libcloud.compute.types import Provider
+
+# For our new Charmed OpenStack private cloud, we need to specify the path to the
+# root CA certificate
+import libcloud.security
+libcloud.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 for 0 in the following variable to specify your group number.
+# (will be used for the username, project etc., as coordinated in the lab sessions)
+
+GROUP_NUMBER = 0
+
+
+###############################################################################################
+#
+#  no changes necessary below this line in this example
+#
+###############################################################################################
+
+# 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 OpenStack
+AUTH_USERNAME = 'CloudComp' + str(GROUP_NUMBER)
+# your project in OpenStack
+PROJECT_NAME = 'CloudComp' + str(GROUP_NUMBER)
+# A network in the project the started instance will be attached to
+PROJECT_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"
+
+# default region
+REGION_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 the password from user
+    # auth_password = getpass.getpass("Enter your OpenStack password:")
+    auth_password = "demo"
+
+    # instantiate a connection to the OpenStack private cloud
+    # make sure to include ex_force_auth_version='3.x_password', as needed in our environment
+    provider = get_driver(Provider.OPENSTACK)
+
+    print(f"Opening connection to {AUTH_URL} as {AUTH_USERNAME}...")
+
+    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)
+
+    print("Getting images and selecting desired one...")
+    print("=========================================================================")
+
+    # get a list of images offered in the cloud context (e.g. Ubuntu 20.04, cirros, ...)
+    images = conn.list_images()
+    image = ''
+    for img in images:
+        if img.name == UBUNTU_IMAGE_NAME:
+            image = img
+            print(img)
+
+    print("Getting flavors...")
+    print("=========================================================================")
+
+    # get a list of flavors offered in the cloud context (e.g. m1.small, m1.medium, ...)
+    flavors = conn.list_sizes()
+    for flavor in flavors:
+        print(flavor)
+
+    print("Selecting desired flavor...")
+    print("=========================================================================")
+
+    # get the flavor with id 2
+    flavor_id = '2'
+    flavor = conn.ex_get_size(flavor_id)
+    print(flavor)
+
+    print("Selecting desired network...")
+    print("=========================================================================")
+
+    # get a list of networks in the cloud context
+    networks = conn.ex_list_networks()
+    network = ''
+    for net in networks:
+        if net.name == PROJECT_NETWORK:
+            network = net
+
+    print("Create instance 'testing'...")
+    print("=========================================================================")
+
+    # create a new instance with the name "testing"
+    # make sure to provide networks (networks={network}) the instance should be attached to
+    instance_name = 'testing'
+    testing_instance = conn.create_node(name=instance_name, image=image, size=flavor,
+                                        networks={network})
+    print(testing_instance)
+
+    print("Showing all running instances...")
+    print("=========================================================================")
+
+    # show all instances (running nodes) in the cloud context
+    instances = conn.list_nodes()
+    for instance in instances:
+        print(instance)
+
+    print("Destroying instance...")
+    print("=========================================================================")
+
+    # destroy the instance we have just created
+    conn.destroy_node(testing_instance)
+
+
+# method that is called when the script is started from the command line
+if __name__ == '__main__':
+    main()

demo2_instance_with_init_script.py

@@ -0,0 +1,268 @@
+"""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 create and install a new SSH key pair, create a security group, start an instance
+# and deploy a demo app (faafo) using cloud-init and assign a floating IP to the instance.
+#
+# cloud-init is a multi-distribution package that handles early initialization of a cloud instance.
+# It is supported by many major cloud providers, including OpenStack.
+# cloud-init documentation: https://cloudinit.readthedocs.io/en/latest/
+
+# Needed if the password should be prompted for:
+# import getpass
+import os
+import sys
+
+from libcloud.compute.providers import get_driver
+from libcloud.compute.types import Provider
+
+# For our new Charmed OpenStack private cloud, we need to specify the path to the root
+# CA certificate
+import libcloud.security
+libcloud.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 OpenStack
+AUTH_USERNAME = 'CloudComp' + str(group_number)
+print(f'Using username: {AUTH_USERNAME}\n')
+# your project in OpenStack
+PROJECT_NAME = 'CloudComp' + str(group_number)
+# A network in the project the started instance will be attached to
+PROJECT_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"
+
+# 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@HOSTNAME
+
+KEYPAIR_NAME = 'srieger-pub'
+PUB_KEY_FILE = '~/.ssh/id_rsa.pub'
+
+FLAVOR_NAME = 'm1.small'
+
+
+# default region
+REGION_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
+
+    ###########################################################################
+    #
+    # 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
+    #
+    ###########################################################################
+
+    hsfd_faafo_cloud_init_script = 'https://gogs.informatik.hs-fulda.de/srieger/cloud-computing-msc-ai-examples/raw/master/faafo/contrib/install.sh'  # noqa: E501 pylint: disable=line-too-long
+    # testing / faafo dev branch:
+    # hsfd_faafo_cloud_init_script = 'https://gogs.informatik.hs-fulda.de/srieger/cloud-computing-msc-ai-examples/raw/branch/dev_faafo/faafo/contrib/install.sh'  # noqa: E501 pylint: disable=line-too-long
+
+    userdata = '#!/usr/bin/env bash\n' \
+               f'curl -L -s {hsfd_faafo_cloud_init_script} | bash -s -- ' \
+               '-i faafo -i messaging -r api -r worker -r demo\n'
+    print('\nUsing cloud-init userdata:\n"' + userdata + '"\n')
+
+    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.')
+        exit()
+    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(f'Private IP found: {private_ip}')
+
+    public_ip = None
+    if len(testing_instance.public_ips):
+        public_ip = testing_instance.public_ips[0]
+        print(f'Public IP found: {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(f'Allocating new Floating IP from pool: {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('\n\n#### Deployment finished\n\n')
+    print('After some minutes, as soon as cloud-init installed required packages and the\n'
+          'faafo app, (First App Application For OpenStack) fractals demo will be available\n'
+          f'at http://{actual_ip_address}\n')
+
+    print('You can use ssh to login to the instance using your private key. Default user name for official Ubuntu\n'
+          f'Cloud Images is: ubuntu, so you can use, e.g.: "ssh -i ~/.ssh/id_rsa ubuntu@{actual_ip_address}" if your\n'
+          'private key is in the default location.\n\n'
+          'After login, you can list available fractals using "faafo list". \n'
+          'To request the generation of new fractals, you can use "faafo create".\n\n'
+          'You can also see other options to use the faafo example cloud service using "faafo -h".\n\n'
+          'If you cannot start faafo command and/or do not see the webpage, you can check the Instance Console Log of\n'
+          'the instance, e.g., in OpenStack web interface or look at "tail -f /var/log/cloud-init*.log" for the\n'
+          'cloud-init log files.\n')
+
+
+if __name__ == '__main__':
+    main()

demo3_microservice.py

@@ -0,0 +1,317 @@
+"""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 create start multiple instances splitting up the faafo monolithic application into
+# a (minimalistic but already scalable) microservice architecture.
+# Also introduces the concept of different security groups and corresponding frontend/backend
+# separation.
+
+# Needed if the password should be prompted for:
+# import getpass
+import os
+import sys
+
+from libcloud.compute.providers import get_driver
+from libcloud.compute.types import Provider
+
+# For our new Charmed OpenStack private cloud, we need to specify the path to the root
+# CA certificate
+import libcloud.security
+libcloud.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 OpenStack
+AUTH_USERNAME = 'CloudComp' + str(group_number)
+print(f'Using username: {AUTH_USERNAME}\n')
+# your project in OpenStack
+PROJECT_NAME = 'CloudComp' + str(group_number)
+# A network in the project the started instance will be attached to
+PROJECT_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"
+
+# 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@HOSTNAME
+
+KEYPAIR_NAME = 'srieger-pub'
+PUB_KEY_FILE = '~/.ssh/id_rsa.pub'
+
+FLAVOR_NAME = 'm1.small'
+
+
+# default region
+REGION_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
+
+    ###########################################################################
+    #
+    # 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 worker security group...')
+    security_group_name = 'worker'
+    security_group_exists = False
+    worker_security_group = ''
+    for security_group in conn.ex_list_security_groups():
+        if security_group.name == security_group_name:
+            worker_security_group = security_group
+            security_group_exists = True
+
+    if security_group_exists:
+        print('Worker Security Group ' + worker_security_group.name + ' already exists. '
+              'Skipping creation.')
+    else:
+        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)
+
+    print('Checking for existing controller security group...')
+    security_group_name = 'control'
+    security_group_exists = False
+    controller_security_group = ''
+    for security_group in conn.ex_list_security_groups():
+        if security_group.name == security_group_name:
+            controller_security_group = security_group
+            security_group_exists = True
+
+    if security_group_exists:
+        print('Controller Security Group ' + controller_security_group.name + ' already exists. '
+              'Skipping creation.')
+    else:
+        controller_security_group = conn.ex_create_security_group('control', 'for services that '
+                                                                  'run on a control node')
+        conn.ex_create_security_group_rule(controller_security_group, 'TCP', 22, 22)
+        conn.ex_create_security_group_rule(controller_security_group, 'TCP', 80, 80)
+        conn.ex_create_security_group_rule(controller_security_group, 'TCP', 5672, 5672,
+                                           source_security_group=worker_security_group)
+
+    for security_group in conn.ex_list_security_groups():
+        print(security_group)
+
+    ###########################################################################
+    #
+    # create app-controller
+    #
+    ###########################################################################
+
+    # https://git.openstack.org/cgit/openstack/faafo/plain/contrib/install.sh
+    # is currently broken, hence the "rabbitctl" lines were added in the example
+    # below, see also https://bugs.launchpad.net/faafo/+bug/1679710
+    #
+    # Thanks to Stefan Friedmann for finding this fix ;)
+    # TODO: still needed for new version of faafo and Ubuntu 22.04?
+
+    userdata = '#!/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 -- ' \
+               '-i messaging -i faafo -r api\n' \
+               'rabbitmqctl add_user faafo guest\n' \
+               'rabbitmqctl set_user_tags faafo administrator\n' \
+               'rabbitmqctl set_permissions -p / faafo ".*" ".*" ".*"\n'
+    print('\nUsing cloud-init userdata:\n"' + userdata + '"\n')
+
+    print('Starting new app-controller instance and wait until it is running...')
+    instance_controller_1 = conn.create_node(name='app-controller',
+                                             image=image,
+                                             size=flavor,
+                                             networks=[network],
+                                             ex_keyname=KEYPAIR_NAME,
+                                             ex_userdata=userdata,
+                                             ex_security_groups=[controller_security_group])
+
+    conn.wait_until_running(nodes=[instance_controller_1], timeout=120, ssh_interface='private_ips')
+
+    ###########################################################################
+    #
+    # assign app-controller floating 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:
+        pool = conn.ex_list_floating_ip_pools()[0]
+        print(f'Allocating new Floating IP from pool: {pool}')
+        unused_floating_ip = pool.create_floating_ip()
+
+    conn.ex_attach_floating_ip_to_node(instance_controller_1, unused_floating_ip)
+    print(f'Controller Application will be deployed to http://{unused_floating_ip.ip_address}')
+    actual_ip_address = unused_floating_ip.ip_address
+
+    ###########################################################################
+    #
+    # getting id and ip address of app-controller instance
+    #
+    ###########################################################################
+
+    # instance should not have a public ip? floating ips are assigned later
+    instance_controller_1 = conn.ex_get_node_details(instance_controller_1.id)
+    ip_controller = ''
+    if instance_controller_1.public_ips:
+        ip_controller = instance_controller_1.public_ips[0]
+    else:
+        ip_controller = instance_controller_1.private_ips[0]
+
+    ###########################################################################
+    #
+    # create app-worker-1
+    #
+    ###########################################################################
+
+    userdata = '#!/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://{ip_controller}" -m "amqp://faafo:guest@' \
+               f'{ip_controller}:5672/\n'
+    print('\nUsing cloud-init userdata:\n"' + userdata + '"\n')
+
+    print('Starting new app-worker-1 instance and wait until it is running...')
+    instance_worker_1 = conn.create_node(name='app-worker-1',
+                                         image=image,
+                                         size=flavor,
+                                         networks=[network],
+                                         ex_keyname=KEYPAIR_NAME,
+                                         ex_userdata=userdata,
+                                         ex_security_groups=[worker_security_group])
+
+    conn.wait_until_running(nodes=[instance_worker_1], timeout=120, ssh_interface='private_ips')
+
+    ###########################################################################
+    #
+    # assign app-worker floating 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:
+        pool = conn.ex_list_floating_ip_pools()[0]
+        print(f'Allocating new Floating IP from pool: {pool}')
+        unused_floating_ip = pool.create_floating_ip()
+
+    conn.ex_attach_floating_ip_to_node(instance_worker_1, unused_floating_ip)
+    print(f'The worker will be available for SSH at {unused_floating_ip.ip_address}')
+
+    print('\n\n#### Deployment finished\n\n')
+    print('After some minutes, as soon as cloud-init installed required packages and the\n'
+          'faafo app, (First App Application For OpenStack) fractals demo will be available\n'
+          f'at http://{actual_ip_address}\n')
+
+    print('You can use ssh to login to the controller using your private key.\n'
+          f'E.g., "ssh -i ~/.ssh/id_rsa ubuntu@{actual_ip_address}". After login,\n'
+          'you can list available fractals using "faafo list". To request the generation of\n'
+          'new fractals, you can use "faafo create". \n'
+          'You can also see other options to use the faafo example cloud service using '
+          '"faafo -h".')
+
+
+if __name__ == '__main__':
+    main()

destroy_all_demo_instances.py

@@ -0,0 +1,126 @@
+"""Example for Cloud Computing Course Master AI / GSD"""
+
+
+# This script demonstrates how to use libcloud to cleanup all instances used in the demos
+# for our OpenStack private cloud environment.
+
+# import getpass
+import os
+import sys
+
+import time
+from libcloud.compute.providers import get_driver
+from libcloud.compute.types import Provider
+
+# For our new Charmed OpenStack private cloud, we need to specify the path to the
+# root CA certificate
+import libcloud.security
+libcloud.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 for X in the following variable 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"')
+
+
+###############################################################################################
+#
+#  no changes necessary below this line in this example
+#
+###############################################################################################
+
+# 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 OpenStack
+AUTH_USERNAME = 'CloudComp' + str(group_number)
+# your project in OpenStack
+PROJECT_NAME = 'CloudComp' + str(group_number)
+# A network in the project the started instance will be attached to
+PROJET_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"
+
+# default region
+REGION_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
+    #
+    ###########################################################################
+
+    # 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)
+
+    ###########################################################################
+    #
+    # clean up resources from previous demos
+    #
+    ###########################################################################
+
+    # destroy running demo instances
+    for instance in conn.list_nodes():
+        if instance.name in ['all-in-one', 'app-worker-1', 'app-worker-2', 'app-worker-3',
+                             'app-controller',
+                             'app-services', 'app-api-1', 'app-api-2']:
+            print(f'Destroying Instance: {instance.name}')
+            conn.destroy_node(instance)
+
+    # wait until all nodes are destroyed to be able to remove depended security groups
+    nodes_still_running = True
+    while nodes_still_running:
+        nodes_still_running = False
+        time.sleep(3)
+        instances = conn.list_nodes()
+        for instance in instances:
+            # if we see any demo instances still running continue to wait for them to stop
+            if instance.name in ['all-in-one', 'app-worker-1', 'app-worker-2', 'app-worker-3',
+                                 'app-controller', 'app-services', 'app-api-1', 'app-api-2']:
+                nodes_still_running = True
+                print('There are still instances running, waiting for them to be destroyed...')
+
+    # delete security groups
+    for group in conn.ex_list_security_groups():
+        if group.name in ['control', 'worker', 'api', 'services']:
+            print(f'Deleting security group: {group.name}')
+            conn.ex_delete_security_group(group)
+
+
+if __name__ == '__main__':
+    main()

root-ca.crt

@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----