Azure WebApp Deployment Slots
- 1. BLUE/GREEN DEPLOYMENT ON AZURE DEPLOYMENT SLOT EBRU CUCEN 11/12/2017
- 2. AGENDA ▸ What is Deployment Slot? ▸ How it works? ▸ Why you should use it? ▸ When you should be careful?
- 4. WHAT? BEFORE App v1.0 slot=production App v1.1 slot=staging ConnectionString Application Settings Handler Mappings Monitoring and Diagnostics Settings WebJob Content SHARED
- 5. WHAT? BEFORE App v1.0 slot=production App v1.1 slot=staging ConnectionString Application Settings Publishing endpoints Custom Domain Names SSL Certificates and bindings Scale Settings WebJob Schedulers Site Extensions Handler Mappings Monitoring and Diagnostics Settings WebJob Content PRODUCTIONONLYSHARED
- 6. APPLY CONFIG WARM UP WHAT? BEFORE AFTER App v1.0 slot=production App v1.1 App v1.0 App v1.1 slot=staging AUTO-SWAP MULTI- PHASE SWAP OPTIONS PROCESS SWAP HOSTNAMES
- 7. New-AzureRmWebAppSlot -ResourceGroupName $rg -name $site -slot $slotName Switch-AzureRmWebAppSlot -ResourceGroupName $rg -Name $site -SourceSlotName $slotName -DestinationSlotName production -SwapWithPreviewAction ApplySlotConfig Source slot warms up Run tests Switch-AzureRmWebAppSlot -ResourceGroupName $rg -Name $site -SourceSlotName $slotName -DestinationSlotName production -SwapWithPreviewAction CompleteSlotSwap Switch-AzureRmWebAppSlot -ResourceGroupName $rg -Name $site -SourceSlotName $slotName -DestinationSlotName production -SwapWithPreviewAction ResetSlotSwap HOW? PORTAL AZURE CLI POWERSHELL AZURE MANAGEMENT API Pass? Fail?
- 8. WHY? ▸ Minimum Downtime ▸ Testable ▸ Rollbackable
- 9. EXTRA CARE HICCUPS Staging Slot Url : publicly accessible Can be avoided with a rewrite rule Warm up : extra warm up needed? Application Initialization Module Sharing same Service Plan : slots not auto-scalable Use only for sanity testing, not a test environment ! ! !
- 10. EXTRA CARE HICCUPS Service Plan Requires Pricing Tier Standard+ Service Plan can be upgraded before deployment, downgraded after deployment Will the non-prod deployment slots use - Prod Database? - Azure Search? - Application Services? ! !?
- 11. REFERENCES ▸ MS Docs: ▸ https://docs.microsoft.com/en-gb/azure/app-service/web- sites-staged-publishing ▸ Warm Up with Application Initialization Module : http://ruslany.net/2015/09/how-to-warm-up-azure-web- app-during-deployment-slots-swap/ ▸ PowerShell Examples: http://ruslany.net/2016/10/using-powershell-to-manage- azure-web-app-deployment-slots/
- 12. THANK YOU!