moved start of worker-3, changed var names to reflect their usage

demo4-scale-out-add-worker.py

@@ -0,0 +1,96 @@
+# 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()