Python applications on Azure and Azure in Python applications.

1. Michał Smereczyński | Cloudeon AS
Cloud Solution Architect
Aplikacje Python na platformie Microsoft
Azure
i platforma Microsoft Azure w aplikacjach
Python

2. @smereczynski
https://lnx.azurewebites.net
Michał Smereczyński
Linux Guy
DevOps
(czasami) Dev
Architekt
Konsultant

3. Aplikacje Python na platformie Microsoft Azure

4. Opcje:
IaaS
VM
Linux
Windows
PaaS
WebApp
Windows
Linux
Service Fabric
Guest exec
Container
Container Services
DC/OS
Swarm
Kubernetes

5. PaaS
WebApp
Windows
Linux

6. PaaS
WebApp
Windows
WSGI

7. Projekt
app.py
requirements.txt
runtime.txt
web.config
ptvs_virtualenv_proxy.py
WSGI Handler
Package Management
Virtual Env + Python version
App + Server config
Virtual Environment Proxy

8. App.py
def wsgi_app(environ, start_response):
status = '200 OK’
response_headers = [('Content-type', 'text/plain')]
start_response(status, response_headers)
response_body = 'Hello World’
yield response_body.encode()
if __name__ == '__main__':
from wsgiref.simple_server import make_server
httpd = make_server('localhost', 5555, wsgi_app)
httpd.serve_forever()

9. requirements.txt
flask<1
requests==2.12.3

10. runtime.txt
python-3.4

11. web.config
<?xml version="1.0"?>
<configuration>
<appSettings>
<add key="WSGI_ALT_VIRTUALENV_HANDLER" value="app.wsgi_app" />
<add key="WSGI_ALT_VIRTUALENV_ACTIVATE_THIS" value="D:homesitewwwrootenvScriptspython.exe" />
<add key="WSGI_HANDLER" value="ptvs_virtualenv_proxy.get_venv_handler()" />
<add key="PYTHONPATH" value="D:homesitewwwroot" />
</appSettings>
<system.webServer>
<modules runAllManagedModulesForAllRequests="true" />
<handlers>
<remove name="Python27_via_FastCGI" />
<remove name="Python34_via_FastCGI" />
<add name="Python FastCGI" path="handler.fcgi" verb="*" modules="FastCgiModule"
scriptProcessor="D:Python34python.exe|D:Python34Scriptswfastcgi.py" resourceType="Unspecified"
requireAccess="Script" />
</handlers>
</system.webServer>
</configuration>

12. ptvs_virtualenv_proxy.py
„The following script is used to retrieve the WSGI handler,
activate the virtual environment and log errors. It is
designed to be generic and used without modifications.”

13. Wdrożenie
push
1. KuduSync 2. Select Python version 3. Create virtual environment
4. Install packages5. Copy web.config6. Django collectstatic

14. aplikacja.azurewebsites.net

15. DEMO

16. Platforma Microsoft Azure w aplikacjach Python

18. Azure Resource Manager

19. CONSISTENT
MANAGEMENT
LAYER
AZURE RESOURCE MANAGER API

20. Azure SDK for Python
https://github.com/Azure/azure-sdk-for-python
pip install azure

21. from azure.mgmt.common import SubscriptionCloudCredentials
import azure.mgmt.compute
import azure.mgmt.network
import azure.mgmt.resource
import azure.mgmt.storage

22. import requests
def get_token_from_client_credentials(endpoint, client_id, client_secret):
payload = {
'grant_type': 'client_credentials',
'client_id': client_id,
'client_secret': client_secret,
'resource': 'https://management.core.windows.net/'
}
response = requests.post(endpoint, data=payload).json()
return response['access_token']
auth_token = get_token_from_client_credentials(
endpoint='https://login.microsoftonline.com/160012ea-8f27-427f-9d00-030d66b90d0f/oauth2/token',
client_id='47bb44d3-c6da-4974-9df8-88598a10eb55',
client_secret='ijoijoufo2'
)
subscription_id = '420288c3-b6f0-45e4-a3f6-e70fe2c18f50'
creds = SubscriptionCloudCredentials(subscription_id, auth_token)

23. result = compute_client.virtual_machines.create_or_update(
GROUP_NAME,
azure.mgmt.compute.VirtualMachine(
location=REGION,
name=VM_NAME,
os_profile=azure.mgmt.compute.OSProfile(
admin_username=ADMIN_USERNAME,
admin_password=ADMIN_PASSWORD,
computer_name=COMPUTER_NAME,
),
hardware_profile=azure.mgmt.compute.HardwareProfile(
virtual_machine_size=azure.mgmt.compute.VirtualMachineSizeTypes.standard_a0
),
network_profile=azure.mgmt.compute.NetworkProfile(
network_interfaces=[
azure.mgmt.compute.NetworkInterfaceReference(
reference_uri=nic_id,
),
],
),
storage_profile=azure.mgmt.compute.StorageProfile(
os_disk=azure.mgmt.compute.OSDisk(
caching=azure.mgmt.compute.CachingTypes.none,
create_option=azure.mgmt.compute.DiskCreateOptionTypes.from_image,
name=OS_DISK_NAME,
virtual_hard_disk=azure.mgmt.compute.VirtualHardDisk(
uri='https://{0}.blob.core.windows.net/vhds/{1}.vhd'.format(
STORAGE_NAME,
OS_DISK_NAME,
),
),
),
image_reference = azure.mgmt.compute.ImageReference(
publisher=IMAGE_PUBLISHER,
offer=IMAGE_OFFER,
sku=IMAGE_SKU,
version=IMAGE_VERSION,
),
),
),
)
TWORZENIEVM

24. result = network_client.public_ip_addresses.get(GROUP_NAME, PUBLIC_IP_NAME)
print('VM available at {}'.format(result.public_ip_address.ip_address))
Zasoby jako obiekty

25. DEMO