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demo4-scale-out-add-worker.py 7.40 KiB
# 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 1-29 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 = X
# web service endpoint of the private cloud infrastructure
auth_url = 'https://private-cloud.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 20.04 - Focal Fossa - 64-bit - Cloud Based Image"
#UBUNTU_IMAGE_NAME = "auto-sync/ubuntu-jammy-22.04-amd64-server-20240319-disk1.img"
UBUNTU_IMAGE_NAME = "ubuntu-22.04-jammy-x86_64"
# 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 = 'CloudComp30-keypair'
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, "hsfulda" for RZ LDAP, e.g., using fdaiXXXX as auth_username
domain_name = "default"
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)
###########################################################################
#
# 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
###########################################################################
#
# get fixed a ip for service and api instance
# (better would be shared IP for the cluster etc.)
#
###########################################################################
# find service instance
for instance in conn.list_nodes():
if instance.name == 'app-services':
services_ip = instance.private_ips[0]
print(('Found app-services fixed IP to be: ', services_ip))
if instance.name == 'app-api-1':
api_1_ip = instance.private_ips[0]
print(('Found app-api-1 fixed IP to be: ', api_1_ip))
###########################################################################
#
# 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
#
###########################################################################
def get_security_group(connection, security_group_name):
"""A helper function to check if security group already exists"""
print(('Checking for existing ' + security_group_name + ' security group...'))
for security_grp in connection.ex_list_security_groups():
if security_grp.name == security_group_name:
print(('Security Group ' + security_group_name + ' already exists. Skipping creation.'))
return security_grp
return False
if not get_security_group(conn, "worker"):
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)
else:
worker_security_group = get_security_group(conn, "worker")
for security_group in conn.ex_list_security_groups():
print(security_group)
###########################################################################
#
# create worker instances
#
###########################################################################
#hsfd_faafo_cloud_init_script = 'https://gogs.informatik.hs-fulda.de/srieger/cloud-computing-msc-ai-examples/raw/master/faafo/contrib/install.sh'
# 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'
userdata_worker = '''#!/usr/bin/env bash
curl -L -s ''' + hsfd_faafo_cloud_init_script + ''' | bash -s -- \
-i faafo -r worker -e 'http://%(api_1_ip)s' -m 'amqp://faafo: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 ''' + hsfd_faafo_cloud_init_script + ''' | bash -s -- \
# -i faafo -r worker -e 'http://%(api_2_ip)s' -m 'amqp://faafo: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])
print(instance_worker_3)
if __name__ == '__main__':
main()