Azure devops deploy to function app with access restrictions - azure-devops

Question

I am trying to deploy a function app via an Azure DevOps pipeline, however I am receiving the following error:
##[error]Failed to deploy web package to App Service.
##[error]To debug further please check Kudu stack trace URL : $URL_REMOVED
##[error]Error: Error: Failed to deploy web package to App Service. Ip Forbidden (CODE: 403)
From some googling a suggested solution seems to be to whitelist agent IP before the deployment, and then remove it after. I have added this to my pipeline, and I can see the agent IP get added to access restrictions, however the deployment still fails.
Here is my pipeline file:
# Node.js Function App to Linux on Azure
# Build a Node.js function app and deploy it to Azure as a Linux function app.
# Add steps that analyze code, save build artifacts, deploy, and more:
# https://learn.microsoft.com/azure/devops/pipelines/languages/javascript
trigger:
- main
variables:
# Azure Resource Manager connection created during pipeline creation
azureSubscription: 'xxx'
# Function app name
functionAppName: 'xxx'
# Environment name
environmentName: 'xxx'
# Agent VM image name
vmImageName: 'ubuntu-latest'
stages:
- stage: Build
displayName: Build stage
jobs:
- job: Build
displayName: Build
pool:
vmImage: $(vmImageName)
steps:
- task: NodeTool#0
inputs:
versionSpec: '10.x'
displayName: 'Install Node.js'
- script: |
if [ -f extensions.csproj ]
then
dotnet build extensions.csproj --runtime ubuntu.16.04-x64 --output ./bin
fi
displayName: 'Build extensions'
- script: |
npm install
npm run build --if-present
npm run test --if-present
displayName: 'Prepare binaries'
- task: ArchiveFiles#2
displayName: 'Archive files'
inputs:
rootFolderOrFile: '$(System.DefaultWorkingDirectory)'
includeRootFolder: false
archiveType: zip
archiveFile: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip
replaceExistingArchive: true
- upload: $(Build.ArtifactStagingDirectory)/$(Build.BuildId).zip
artifact: drop
- stage: Deploy
displayName: Deploy stage
dependsOn: Build
condition: succeeded()
jobs:
- deployment: Deploy
displayName: Deploy
environment: $(environmentName)
pool:
vmImage: $(vmImageName)
strategy:
runOnce:
deploy:
steps:
- task: AzureCLI#2
inputs:
azureSubscription: '$(azureSubscription)'
scriptType: 'bash'
scriptLocation: 'inlineScript'
inlineScript: |
agentIP=$(curl -s https://api.ipify.org/)
az functionapp config access-restriction add -g xxx -n xxx --action Allow --ip-address $agentIP --priority 200
- task: AzureFunctionApp#1
displayName: 'Azure Functions App Deploy: xxx'
inputs:
azureSubscription: '$(azureSubscription)'
appType: functionAppLinux
appName: $(functionAppName)
package: '$(Pipeline.Workspace)/drop/$(Build.BuildId).zip'
Is anyone able to advise where I am going wrong?

Answer 1

I've had a simmilar issue while adding the agent IP to the network restrictions of an storage account (using Powershell but you'll understand the idea), we added a 60s sleep to be sure that the setting are taken into account by Azure.
$sa_name = "sapricer$env_prefix"
if ($null -ne (Get-AzStorageAccount -ResourceGroupName $sa_rg -AccountName $sa_name -ErrorAction Ignore)) {
Write-Output "Storage account '$sa_name' exists"
if ($enable) {
Write-Output "Add ip rule for $current_ip on $sa_name..."
Add-AzStorageAccountNetworkRule -ResourceGroupName $sa_rg -AccountName $sa_name -IPAddressOrRange $current_ip
}
else {
Write-Output "Remove ip rule for $current_ip on $sa_name..."
Remove-AzStorageAccountNetworkRule -ResourceGroupName $sa_rg -AccountName $sa_name -IPAddressOrRange $current_ip
}
}
Start-Sleep -Seconds 60

Answer 2

I found the solution to this.
Function Apps have two IP Restriction sections, one for the App and one for the SCM site. The SCM site is the one that requires the IP to be whitelisted in order for the deployment to work:
az functionapp config access-restriction add --scm-site true -g xxx -n xxx --action Allow --ip-address $agentIP --priority 200

Answer 3

You can deploy Azure function app to azure devops pipeline using azure function app task from Azure devops pipeline tasks
Here is the sample snippet for deploying azure function app
variables:
azureSubscription: Contoso
# To ignore SSL error, uncomment the below variable
# VSTS_ARM_REST_IGNORE_SSL_ERRORS: true
steps:
- task: AzureFunctionApp#1
displayName: Azure Function App Deploy
inputs:
azureSubscription: $(azureSubscription)
appName: samplefunctionapp
package: $(System.DefaultWorkingDirectory)/**/*.zip
Here is the Microsoft Document for deploying azure function app.