Kudu voodoo slideshare
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- Project Kudu is an open source .NET Foundation project that powers deployments and hosting for Azure Web Apps, WebJobs, and Mobile Services. It provides features like configurable build steps, diagnostic tools, and APIs. - Azure Web Apps provides auto-scaling, high availability, continuous deployment from sources like Git, and supports languages like .NET, Java, PHP, Node.js, and Python. - Kudu provides access to sites through its console and APIs, allowing diagnostic dumps, file browsing, and customizing deployment pipelines through scripts.
![Customising the deployment pipeline
The Azure CLI command “$ azure site deploymentscript ” generates
deployment scripts that are used by kudu, you can customise these files
• .deployment file
[config]
command=<whatever command>
• Write in batch file, bash script, PHP, JavaScript, …
Can do things like
download extra tools
pull in external repos / packages
shell out to command line tools ( msbuild, nugget, curl etc)](https://image.slidesharecdn.com/kuduvoodoo-slideshare-160226080001/85/Kudu-voodoo-slideshare-19-320.jpg)
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Kudu voodoo slideshare
- 1. Kudu Voodoo –Project Kudu Overview & Advanced Azure Web Apps Features Azure Dublin Meetup | Feb 2016
- 2. Aidan Casey |Microsoft Azure MVP| @AIDANJCASEY
- 3. Azure Web Apps • PaaS – fully managed web application hosting • Supports .NET, Java, PHP, Node.js, and Python • Autoscale and load balancing • High availability with auto patching • Continuous deployment with Git, TFS, GitHub, Dropbox, and Visual Studio Team Services • Many ways to work with the platform - Azure Portal, Azure CLI, Azure SDK’s
- 4. Project Kudu • Open source .NET Foundation https://github.com/projectkudu/kudu • Powers deployments for WebApps / WebSites WebJobs Mobile Services • Can also run outside of Azure • Git deployments • Configurable build steps • Sandboxing • Hosting & Metering • Diagnostic tools & API’s
- 5. Architecture… http://www.slideshare.net/kashifx/azure-websites-40718659
- 6. Azure LB Runtime DB Storage Controller IIS ARR (LB) Web Worker Other databases 1st request (cold site)
- 7. Storage Controller IIS ARR (LB) Web Worker Other databases xth request (hot site) Azure LB
- 8. Service Plans and Features free shared basic standard Premium When to use spikes , goofing around dev - test with SSL production low traffic workloads production with advanced autoscale & traffic management production more advances – biztalk connectors etc # cores Shared, 60 mins CPU per day shared, 240 mins CPU per day 1-4 1-4 1-8 RAM 1GB .5GB 1.75-7GB 1.75-7GB 1.75-14GB SLA 99.95% 99.95% 99.95% custom domain & certs no yes yes yes yes Remote profiling no no no yes yes
- 9. Deployment Slots • Standard and Premium Mode Only • Hot swap with no requests dropped • Custom warm up application hooks • Rollback • AppSettings can be made slot specific • Can configure auto swapping • % traffic routing via Azure Traffic Routing
- 10. Demo zero downtime with deployment slots
- 11. Auto Healing • Standard and Premium Mode Only • Auto detect certain conditions and automatically recover - Recycle based on Request Count - Recycling based on slow requests - If you have multiple instances of your web site, it will only restart the worker process for the instance that has hit this trigger and not all instances.
- 12. Application Log Streaming • 3 types of logs Detailed Error Logging Failed Request Tracing Web Server Logging (W3C extended log format) • Can log to the file system (rolling files) , table storage or blob storage • When you enable application logging in azure websites its on for 12 hours….
- 13. Demo log tailing from the Azure CLI
- 14. Kudu Site {yoursite}.scm.azurewebsites.net • The Kudu site runs in the same sandbox as your real site. This has some important implications • It cannot do anything that the site itself wouldn't be able to do itself • It shares the same quotas as the site. That is, the CPU/RAM/Disk used by the Kudu service is counted toward the site's quota • It relies on the security model of the Azure Web Site runtime
- 15. Kudu Console & API both command line and file browser access to your sites • Diagnostic dumps • Process Explorer • WebHooks • File Explorer • Site Extensions • Runtime Environment & Variables
- 17. Demo remote profiling a .NET Web App
- 18. Demo remote debugging a .NET Web App
- 19. Customising the deployment pipeline The Azure CLI command “$ azure site deploymentscript ” generates deployment scripts that are used by kudu, you can customise these files • .deployment file [config] command=<whatever command> • Write in batch file, bash script, PHP, JavaScript, … Can do things like download extra tools pull in external repos / packages shell out to command line tools ( msbuild, nugget, curl etc)
- 20. Demo running unit tests in Azure as part of a deployment pipeline
- 21. Site Extensions • Add additional tools to your website • Install site extensions through the portal or the kudu site • Site Extension Gallery : http://www.siteextensions.net • Build & publish your own !
- 22. Demo Using site extensions -visual studio online monaco code editor
- 23. Best Practices • Autoscale on & Stick sessions off • Back up your database • Load test before going live • Configure automatic failover using Azure Global Traffic Manager • Automate deployments using slots • Test site recovery • Use azure resource groups • Set billing alerts • Bundle & minify web resources • Use Azure CDN to edge cache static files • Implement the appropriate DB retry policies
- 24. Key Takeaways • Azure Web Apps features- deploy slots, hot swapping, auto scaling, git deployments , customisable pipeline, remote profiling, site extensions • Your Web App is only loaded into IIS when its in use • Kudu is the open source deployment engine behind web apps • Advanced support for .NET apps via remote profiling and remote debugging • No SLA availale for basic of free tier offering