azure function on containerapps

Question

Good morning, I have a bicep files azurefunction.bice and env.bicep. the provisioning works fine. once I am trying to deploy the functionapp service (ref in azure.yaml) on the function hosted on containerapp I am getting the following error:
Error: Deploying services (azd deploy)

(x) Failed: Deploying service functionapp

ERROR: error executing step command 'deploy --all': failed deploying service 'functionapp': validating target resource: resource 'func-gfne4osnh4yxi' with type 'Microsoft.Web/sites' does not match expected resource type 'Microsoft.App/containerApps'

azurefunction.bicep
resource`` functionapp 'Microsoft.Web/sites@2023-01-01' = {

``name: 'func-${uniqueString(prefix, subscription().id)}'

location``: location

kind``: 'functionapp,linux,container,azurecontainerapps'

identity``: identityInfo

tags``: tags

properties``: {

managedEnvironmentId``: environmentId

siteConfig``: {

linuxFxVersion``: 'DOCKER|${acrUrl}/azurefunctionsimage:v1.0.0'

acrUseManagedIdentityCreds``: !useSystemIdentity

acrUserManagedIdentityID``: useSystemIdentity ? '': identityResourceId

minimumElasticInstanceCount``: 1

functionAppScaleLimit``: 5

appSettings``: [

{

name``: 'AzureWebJobsStorage'

value``: 'DefaultEndpointsProtocol=https;AccountName=${storageAccount.name};EndpointSuffix=${environment().suffixes.storage};AccountKey=${listKeys(storageAccount.id, storageAccount.apiVersion).keys[0].value}'

}

{

name``: 'FUNCTIONS_EXTENSION_VERSION'

value``: '~4'

}

{

name``: 'APPLICATIONINSIGHTS_CONNECTION_STRING'

value``: appInsights.properties.ConnectionString

}

{

name``: 'DOCKER_REGISTRY_SERVER_URL'

value``: acrUrl

}

{

name``: 'WEBSITES_ENABLE_APP_SERVICE_STORAGE'

value``: 'false'

}

{

name``: 'AzureWebJobsStorage__clientId'

value``: identityClientId

}

]

}

}

}

env.bicep
resource`` environment 'Microsoft.App/managedEnvironments@2023-05-01' = {

``name: '${envResourceNamePrefix}-env'

location``: location

properties``: {

daprAIInstrumentationKey``: appInsightsInstrumentationKey

appLogsConfiguration``: {

destination``: 'log-analytics'

logAnalyticsConfiguration``: {

customerId``: customerId

sharedKey``: logAnalyticsSharedKey

}

}

workloadProfiles``: [

{

name``: 'Consumption'

workloadProfileType``: 'consumption'

}

{

name``: 'd4'

workloadProfileType``: 'D4'

minimumCount``: 1

maximumCount``: 3

}

]

}

}

output`` environmentId string = environment.id

azure.yaml
name``: postgres-timescale

metadata``:

template``: postgres-timescale@0.0.2-beta

requiredVersions``:

azd``: ">= 1.9.5"

services``:
functionapp``:

``project: ./src/azure_functions_app

language``: py

module``: functionapp

host``: containerapp

docker``:

path``: ./Dockerfile

context``: .

registry``: ${AZURE_CONTAINER_REGISTRY_ENDPOINT}

image``: azurefunctionsimage

tag``: v1.0.0

hooks``:

predeploy``:

posix``:

shell``: sh

run``: |

echo "Building Docker image for the functionapp service..."

docker build -t ${AZURE_CONTAINER_REGISTRY_ENDPOINT}/azurefunctionsimage:v1.0.0 .

echo "Tagging Docker image for the functionapp service..."

docker tag ${AZURE_CONTAINER_REGISTRY_ENDPOINT}/azurefunctionsimage:v1.0.0 ${AZURE_CONTAINER_REGISTRY_ENDPOINT}/azurefunctionsimage:v1.0.0

echo "Pushing Docker image to Azure Container Registry..."

az acr login --name ${AZURE_CONTAINER_REGISTRY_NAME}

docker push ${AZURE_CONTAINER_REGISTRY_ENDPOINT}/azurefunctionsimage:v1.0.0

postdeploy``:

posix``:

shell``: sh

run``: |

echo "Deploying Event Grid subscription..."

az deployment group create \

--name eventGridSubscriptionDeployment \

--resource-group $(azd env get-values RESOURCE_GROUP_NAME) \

--template-file ./infra/core/eventgrid/eventgrid.bicep \

--parameters \

eventGridTopicName=$(azd env get-values AZURE_EVENTGRID_TOPIC_NAME) \

functionAppName=$(azd env get-values AZURE_FUNCTIONAPP_NAME) \

location=$(azd env get-values AZURE_LOCATION)

I would appreciate some help. I have read the docs, checked azure-samples on github but most of them are using appservice as host. Thank you.

Answer 1

Hi ,

Thanks for reaching out to Microsoft Q&A.

The error indicates a mismatch between the resource type expected (Microsoft.App/containerApps) and the one deployed (Microsoft.Web/sites). This occurs because you are trying to use Azure Container Apps as the hosting environment, but your azurefunction.bicep file is configured for a Function App running on App Service.

Here’s how you can resolve this issue:

1. Review and Update azurefunction.bicep

To use Azure Functions with Azure Container Apps, your resource definition should point to the Microsoft.App/containerApps resource type, not Microsoft.Web/sites.

Replace your existing functionapp resource definition with one that uses Microsoft.App/containerApps.

For example:

resource functionApp 'Microsoft.App/containerApps@2023-05-01' = {
    name: 'func-${uniqueString(prefix, subscription().id)}'
    location: location
    properties: {
        managedEnvironmentId: environmentId
        configuration: {
            secrets: [
                {
                    name: 'AzureWebJobsStorage'
                    value: 'DefaultEndpointsProtocol=https;AccountName=${storageAccount.name};EndpointSuffix=${environment().suffixes.storage};AccountKey=${listKeys(storageAccount.id, storageAccount.apiVersion).keys[0].value}'
                }
            ]
            activeRevisionsMode: 'Single'
            ingress: {
                external: true
                targetPort: 80
                transport: 'auto'
            }
            registries: [
                {
                    server: acrUrl
                    username: ''
                    passwordSecretRef: 'acr-password'
                }
            ]
            dapr: {
                enabled: false
            }
        }
        template: {
            containers: [
                {
                    name: 'functionapp'
                    image: '${acrUrl}/azurefunctionsimage:v1.0.0'
                    resources: {
                        cpu: 0.25
                        memory: '0.5Gi'
                    }
                    env: [
                        {
                            name: 'AzureWebJobsStorage'
                            value: 'DefaultEndpointsProtocol=https;AccountName=${storageAccount.name};EndpointSuffix=${environment().suffixes.storage};AccountKey=${listKeys(storageAccount.id, storageAccount.apiVersion).keys[0].value}'
                        }
                        {
                            name: 'FUNCTIONS_EXTENSION_VERSION'
                            value: '~4'
                        }
                    ]
                }
            ]
        }
    }
}

2. Ensure env.bicep Is Correct

Ensure the managedEnvironments resource in your env.bicep is correctly configured and that environmentId in azurefunction.bicep references the correct managed environment.

3. Update azure.yaml

The host: containerapp configuration is correct. Ensure the docker section aligns with the updated resource definition and paths.

4. Verify Dependencies

• Ensure that the azd CLI version is compatible with your configuration (>= 1.9.5 is required).
• Ensure the container image (azurefunctionsimage:v1.0.0) exists in your Azure Container Registry and is correctly referenced.

5. Deploy Again

Run the following command to redeploy your environment -->azd deploy

6. Debugging Tips

• If the error persists, validate all resource configurations in the Azure Portal.
• Use az resource list to confirm that resources are created under the expected types (Microsoft.App/containerApps).

These steps should align your deployment with the hosting requirements for Azure Container Apps.

Please feel free to click the 'Upvote' (Thumbs-up) button and 'Accept as Answer'. This helps the community by allowing others with similar queries to easily find the solution.