Create deployment slot for WebApp in Azure DevOps pipeline

Question

I would like to perform the following operations from an Azure DevOps pipeline:

• Create new deployment slot for an existing WebApp (staging)
• Deploy application to new slot
• Swap staging slot with production
• Delete former production, now staging slot

What I have so far is:

• Deploy application to new slot
• Swap staging slot with production
• Delete former production, now staging slot

The YAML:

- task: AzureRmWebAppDeployment@4
  inputs:
    ConnectionType: 'AzureRM'
    azureSubscription: 'BizSpark(...)'
    appType: 'webApp'
    WebAppName: 'foo'
    deployToSlotOrASE: true
    ResourceGroupName: 'Default-WestEurope'
    SlotName: 'staging'
    packageForLinux: '$(Build.ArtifactStagingDirectory)/**/*.zip'

- task: AzureAppServiceManage@0
  inputs:
    azureSubscription: 'BizSpark(..)'
    Action: 'Swap Slots'
    WebAppName: 'foo'
    ResourceGroupName: 'Default-WestEurope'
    SourceSlot: 'staging'

- task: AzureAppServiceManage@0
  inputs:
    azureSubscription: 'BizSpark(..)'
    Action: 'Delete Slot'
    WebAppName: 'foo'
    ResourceGroupName: 'Default-WestEurope'
    Slot: 'staging'

However, AzureAppServiceManage task does not provide a method to create a deployment slot.

How can this be done?

Answer 1

I could create a WebbApp slot in azure devops pipeline by using powershell and Microsft Hosted Agent, here is the task:

as per documentation example:

- task: AzureCLI@2
    displayName: Azure CLI   
     inputs:
      azureSubscription: <Name of the Azure Resource Manager service connection>
      scriptType: ps
      scriptLocation: inlineScript
      inlineScript: |
          az --version
          az account show

and for the inline script i used "az webapp deployment slot create" Azure CLI Command:

az webapp deployment slot create --name
                                 --resource-group
                                 --slot
                                 [--configuration-source]
                                 [--subscription]

does this help?

Answer 2

Create deployment slot for WebApp in Azure DevOps pipeline

I am afraid there is no such out of box way to Create deployment slot for WebApp in Azure DevOps pipeline.

As the state of the task Azure App Service Management, we could to know:

The Azure App Service Management task is used to Start/Stop/Restart App Service, Swap Slot, Install Extentions, Enable Continuous Monitoring or Start/Stop all continuous WebJobs on an Azure App Service.

It does not support creating deployment slot for WebApp in the Azure devops pipeline. And AFAIK, no other task currently supports this feature in Azure devops pipeline.

As the solution for this question, just like juunas comment, Usually this is achieved with an ARM template deployment.

We could using the following ARM template to provision Deployment Slots for Azure App Service:

{
    "$schema": "http://schema.management.azure.com/schemas/2014-04-01-preview/deploymentTemplate.json#",
    "contentVersion": "1.0.0.0",
    "parameters": {
        "siteName": {
            "type": "string"
        },
        "slotName": {
            "type": "string"
        }
    },
    "resources": [
        {
            "apiVersion": "2015-04-01",
            "type": "Microsoft.Web/Sites/Slots",
            "name": "[concat(parameters('siteName'), '/', parameters('slotName'))]",
            "location": "[resourceGroup().location]",
            "properties": {},
            "resources": []
        }
    ]
}

Then, we could deploy ARM templates using Azure devops.

You could check this blog and this blog for some more details.

Hope this helps.