Maarten Balliauw@maartenballiauw

Windows Azure Web SitesThings they don’t teach kids in school

Windows Azure Global Bootcamp

Over 60 community-led Windows Azure training events worldwide!

http://globalwindowsazure.azurewebsites.net

• Maarten Balliauw• Technical Evangelist, JetBrains• AZUG• Focus on web

• ASP.NET MVC, Windows Azure, SignalR, ...• MVP Windows Azure & ASPInsider

• Big passion: Windows Azure• http://blog.maartenballiauw.be • @maartenballiauw

Who am I?

Shameless self promotion: Pro NuGet - http://amzn.to/pronuget

Agenda

• Windows Azure Web Sites• Architecture• Project Kudu• Kudu kung-fu

Windows AzureWeb Sites

Start Simplestart free, scale up and out as you go, friction-free and without the headaches

Your waywith asp.net, php or node.js, develop on Windows, OSX or Linux

Go Livedeploy live in seconds,

easily monitor performance, rapidly diagnose and fix issues

Web Sites in Seconds

Windows AzureWeb Sites

demo

Architecture

disclaimer

• Layers• 1st layer: Windows Azure load balancer• 2nd layer: IIS + ARR

• ARR• “Reverse proxy”• Verifies hosting database (plans, quotas, …)• Negotiates best node to run your site on• Site not used much? Put it on a highly loaded machine

Load balancer

• %SYSTEM32%\inetsrv\config\applicationHost.config is taken out of the loop• SQL Azure• No refreshing of all app pools when file is saved

• Storage• “File share” hosted on other machines• Using “WA drive” on blob storage

• Dynamic website activation service• Verifies runtime database (plans, quotas, …)• Site not used for a while? Remove it from the server

Web servers

Web Sites are not in IIS. They only are when a request

comes in!

Azure LB

Runtime DB

Storage Controller

IIS ARR(LB)

Web Worker

Other databases

1

2

3

4

5

5

5

5

1st request (cold site)

Storage Controller

IIS ARR(LB)

Web Worker

Other database

s

1 2

3

3

3

3

xth request (hot site)

Azure LB

Your app not being used for a while?

devopsreactions.tumblr.com

• Provisioning and publishing• Storage and database• != launching a website on web farm

• Metering• By web servers once a site is loaded• Reported back to runtime database

Provisioning, publishing, metering

Runtime DB

Azure LB

Storage Controller

IIS ARR(LB)

Web Worker

X-DriveDeployment Server

Other databas

es

SQL Azure

Blob storage

Windows Azure Worker Role

Provisioning / API Frontend

Metering

DWAS

Site (W3WP.exe)Site (W3WP.exe)

Site (W3WP.exe)

Provisioning, publishing, metering

• Windows Azure Web Sites runs on Windows Azure Cloud Services

• ARR nodes are in fault/update domains• Web Workers are in fault/update domains• Storage nodes are in fault/update domains• Data is on SQL Azure• Files are on blob storage

What I find awesome…

Let’s find some proof…

demo

Need more proof?Windows Azure Services for Windows Server (http://www.microsoft.com/hosting/en/us/services.aspx)

Or:

http://blog.maartenballiauw.be/post/2012/07/24/Hands-on-Windows-Azure-Services-for-Windows.aspx

Project Kudu

• “The engine behind git deployments on Windows Azure”

• Open source (www.github.com/projectkudu/kudu)

• Provides git deployments• Provides builds• Provides sandboxing• Provides hosting

Project Kudu

Project Kudu

demo

Kudukung-fu

Application log streaming

demo

• All logs from the LogFiles/Application folder• Or configure it when querying: azure log tail <site> -p http

• Settings• DIAGNOSTICS_LASTRESORTFILE -> file to log to when diagnostics go

wrong• DIAGNOSTICS_LOGGINGSETTINGSFILE -> settings file (json)• DIAGNOSTICS_TEXTTRACELOGDIRECTORY -> default folder• DIAGNOSTICS_TEXTTRACEMAXLOGFILESIZEBYTES-> log rotation (bytes)• DIAGNOSTICS_TEXTTRACEMAXLOGFOLDERSIZEBYTES -> max log size

(bytes)

Log streaming

Managing settingsand secrets

demo

Staging and production

demo

Multi-tierDeploying a specific project file

demo

• One .deployment file per branch• [config]project=MultiTier.WebApi/MultiTier.WebApi.csproj

• How do I deploy all tiers in a separate website?• .deployment file per branch and every tier in a branch• or customize the build

Multi-tier remarks…

• Check https://github.com/projectkudu/kudu/wiki/Deployment-hooks

• .deployment file• [config]command=<whatever command>

• Write in batch file, bash script, PHP, JavaScript, …

Customizing the build process

Customizing deploymentsan introductiondemo

• A lot :-) (but not too much… there’s a sandbox)

• Environment variables:• DEPLOYMENT_SOURCE• DEPLOYMENT_TARGET• DEPLOYMENT_TEMP• WEBROOT_PATH• MSBUILD_PATH• + everything you feed it through the management portal

What can I do in scripts?

Customizing deploymentssample deployment scriptdemo

• We’ve seen the multi-tier scenario• We can download stuff (NuGet package restore,

pull in external Git repos before build)• We can run stuff (msbuild, nuget.exe, curl, php,

node, …)

Great… but why?

Customizing deploymentswhat about unit tests?demo

Need. Moar!

• REST API https://github.com/projectkudu/kudu/wiki/REST-API

• DropBox support

• Creating a custom handlerhttp://www.windowsazure.com/en-us/develop/python/tutorials/web-sites-with-django/

Moar out of the box

Need. MOAR!!!

A private Kudu build in web sites?

• Build and FTP the artifacts/debug/KuduService to your website

• Add USE_PRIVATE_KUDU=1 app setting• Enjoy the ride! (but don’t call support, you’re on

your own)

See http://blog.davidebbo.com/2012/06/developing-kudu-locally-and-on-azure.html

A private Kudu build in web sites?

Conclusion

• Windows Azure Web Sites are high density• Hosted on Cloud Services• Kudu is our best friend

• Settings and secrets• Muliple environments• Multiple tiers• Build customization• Unit tests• Kudu-in-Kudu

Key takeaways

Thank you!

http://blog.maartenballiauw.be

@maartenballiauw

http://amzn.to/pronuget

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