az webapp config set --linux-fx-version always deploys "PHP version : 8.0.30" and not the specified linux-fx-version

[zockette]

Describe the bug

When trying to change the stack (full switch like java => python or just version change python 3.12 => 3.8) with: _az webapp config set --name APP_NAME --slot SLOT_NAME --resource-group RG_NAME --subscription SUB_NAME --linux-fx-version "LINUX_FXVERSION", the deployed container always ends-up being a PHP container ("PHP version : 8.0.30").

Related command

az webapp config set --name APP_NAME --slot SLOT_NAME --resource-group RG_NAME --subscription SUB_NAME --linux-fx-version "LINUX_FX_VERSION"

Errors

Deploying anything else than a PHP linux-version still deploys a PHP container.

az webapp config set --name APP_NAME --slot SLOT_NAME --resource-group RG_NAME --subscription SUB_NAME --linux-fx-version "PYTHON|3.12" az webapp config set --name APP_NAME --slot SLOT_NAME --resource-group RG_NAME --subscription SUB_NAME --linux-fx-version "PYTHON:3.12" az webapp config set --name APP_NAME --slot SLOT_NAME --resource-group RG_NAME --subscription SUB_NAME --linux-fx-version "NODE|18-lts" az webapp config set --name APP_NAME --slot SLOT_NAME --resource-group RG_NAME --subscription SUB_NAME --linux-fx-version "NODE:18-lts"

They all cause this:

Issue script & Debug output

Pick a linux-fx-version from: az webapp list-runtimes --os-type linux (which seems to give outdated values by the way since JAVA 21is not listed there but can be picked from the Azure Portal). Run: _az webapp config set --name APP_NAME --slot SLOT_NAME --resource-group RG_NAME --subscription SUBNAME --linux-fx-version "PYTHON:3.12" Ssh to App Service Container and check what the deployed container is from the welcome message.

Expected behavior

Setting --linux-fx-version as a value from az webapp list-runtimes --os-type linux in az webapp config set should have the right container deployed.

Environment Summary

az --version azure-cli 2.54.0 core 2.54.0 telemetry 1.1.0 Extensions: bastion 0.3.0 Dependencies: msal 1.24.0b2 azure-mgmt-resource 23.1.0b2

Additional context

I tried using the values from function apps as well as linux-fx-version, it doesn't work either (_az functionapp list-runtimes --os linux --query "[].{stack:join(' ', [runtime, version]), LinuxFxVersion:linux_fx_version, SupportedFunctionsVersions:to_string(supported_functionsversions[])}" --output table, coming from https://learn.microsoft.com/en-us/azure/azure-functions/functions-app-settings#linuxfxversion. I also tried fiddling around with --python-version but it seems to have no effect.

[azure-client-tools-bot-prd[bot]]

Hi @zockette,

2.54.0 is not the latest Azure CLI(2.58.0).

If you haven't already attempted to do so, please upgrade to the latest Azure CLI version by following https://learn.microsoft.com/en-us/cli/azure/update-azure-cli.

[yonzhan]

Thank you for opening this issue, we will look into it.

[microsoft-github-policy-service[bot]]

Thanks for the feedback! We are routing this to the appropriate team for follow-up. cc @AzureAppServiceCLI, @antcp.

[Arthusmeng]

Yes, i have the same issues. I think this is App service frame issues. maybe you container is running. you can see it when you in azure resource explorer. Go to app service resource ,maybe see some run-time os have. like this Az cli have not command az webapp config delete only have az webapp config set --windows-fx-version. I find fix it only using ARM . i hope microsoft add new command to fix it easy.