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azureazure-functionsazure-functions-runtimeazure-functions-core-tools

How do I determine what version of the Azure Function runtime I'm using locally?

I've download azure-functions-core-tool@3 and when I run a newly created function project using the Azure Tools it appears to be running v2, though I'm not sure .

The settings.json file is the following:

{
  "azureFunctions.deploySubpath": ".",
  "azureFunctions.postDeployTask": "npm install",
  "azureFunctions.projectLanguage": "JavaScript",
  "azureFunctions.projectRuntime": "~3",
  "debug.internalConsoleOptions": "neverOpen",
  "azureFunctions.preDeployTask": "npm prune"
}

However, when I run the Azure functions with "npm start" or "func start", the header portion reports:

Azure Functions Core Tools (2.7.2184 Commit hash: 5afacc827c2848e4debc23bb96604f1ffce09cc7)
Function Runtime Version: 2.0.12961.0

and later in the log I see:

[warn] The Node.js version you are using (v12.17.0) is not fully supported by Azure Functions V2. We recommend using one the following major versions: 8, 10.

which seems to imply that the functions are still running in a 2.0 mode.

How can you determine which version of the runtime is executing?

Solution

  • If you see

    Function Runtime Version: 2.0.12961.0

    you're running runtime V2.

    Run npm install -g azure-functions-core-tools@3 to explicitly install the V3 runtime and you'll be running V3 locally.

    Azure Functions runtim V3

    Version 2.x and 3.x
    Version 2.x/3.x of the tools uses the Azure Functions runtime that is built on .NET Core. This version is supported on all platforms .NET Core supports, including Windows, macOS, and Linux.

    More information: Work with Azure Functions Core Tools