Creating a Function App on Linux, using the Portal, Results in a non-functional App Service

Creating a Function App on Linux, using the Portal, Results in a non-functional App Service

It is possible to create a Function App on Linux via the Azure CLI and by using the Portal.

However…

1. If I create a Function App on Linux via the CLI I end up with a working app
2. If I create a Function App on Linux via the Portal I end up with a non-functional app

Either there are some steps that need better documenting, or the Azure Portal needs to do a better job of setting these Function apps up.

Repro Steps

The following describes the steps followed to create a Function App on Linux using the CLI and using the Portal. Prior to performing these steps there are some common steps that need to be followed.

Common Steps

• Using the functions CLI, create a new docker based function app (func init –docker)
• Using the functions CLI, add a single JavaScript HTTP trigger endpoint, leaving the default “hello” code in place (func function new)
• Tag and push the docker image to Docker Hub (the same issue is present if you use Azure Container Registry)
• Create a resource group (mine is called xyzazfuncdocker)
• Create a storage account within the resource group (mine is called xyzazfuncdocker)

My docker image can be found here: https://hub.docker.com/r/martinpeck/azfuncdocker/

Steps to Create a Function App for Linux using CLI

1. Create an App Service Plan

az appservice plan create --name xyzazfuncdocker8 --resource-group xyzazfuncdocker --sku S1 --is-linux

1. Create a Function App, using the App Service Plan

az functionapp create --name xyzazfuncdocker8 --storage-account xyzazfuncdocker --resource-group xyzazfuncdocker --plan xyzazfuncdocker8 --deployment-container-image-name martinpeck/azfuncdocker:v1.0.0

1. Test the API using curl

curl -i https://xyzazfuncdocker8.azurewebsites.net/api/http-trigger\?name\=Martin

1. Observe that the function app responds with an HTTP 200 and the test “Hello Martin”

Steps to Create a Function App for Linux using Portal

1. Create new Function App using the Portal

1. Provide all of the information required to create the Function App, illustrated here with instructions

2. Give it a name

3. Use the resource group we’ve previously created

4. Switch to Linux (Preview)

5. Click on Service Plan

6. Create a new Service Plan

7. Name the Service Plan, set the location, then click OK

8. Select the storage account we’ve previously created, and click “Create”

1. Once deployed, observe that the Portal shows the two Function Apps using different icons. The one created using the CLI has the Functions logo, while the portal one has a generic logo.

1. Open the App Service Plan and configure it to use your container, making sure you select Docker Hub and provide the tag for your container. Additionally, turn on CD

1. Test the API using curl and observe that an HTTP 404 is returned.

curl -i https://xyzazfuncdocker10.azurewebsites.net/api/http-trigger\?name\=Martin
HTTP/1.1 404 Not Found
Server: Kestrel
Date: Wed, 04 Apr 2018 15:40:49 GMT
Content-Length: 0

[martinpeck]

Set that app setting to false on your app that you created from portal, and reload the app. It should work.

I’ll give this a go and confirm whether it works after this change.

I wasn’t sure is this was purely a Functions portal issue, or something else, hence I ended up logging it here.

[ahmelsayed]

I think that was unrelated to this issue. The original issue reported here has been fixed for a while in the UX now. I’ll close this one.