我无法更改 Azure 中的节点版本

Question

I'm running the node server on Azure and need to change the default version of node because it's 0.8.28, or to set the specific version for the app.

At the first time, I thought that I can specify the version using deployment file (deploy.cmd) and package.json like following;

deploy.cmd

:: Force use of the latest NPM
SET NPM_JS_PATH=%ProgramFiles(x86)%\npm\6.12.0\node_modules\npm\bin\npm-cli.js
SET NODE_PATH=%ProgramFiles(x86)%\nodejs\8.9.4\node.exe

package.json

"engines": {
  "node": "8.9.4",
  "npm": "6.12.0"
},

And when the app is deployed, it shows specified versions are set.

2019-12-05T15:36:17    Selected node.js version 8.9.4. Use package.json file to choose a different version.
2019-12-05T15:36:17    Selected npm version 6.12.0
2019-12-05T15:36:17    Updating iisnode.yml at D:\home\site\wwwroot\App_Data\config\scripts\iisnode.yml

That's why I expected the app will be running on node@8.9.4 but when i consoled process.version , it's still 0.8.28. It looks like the version is being overwritten by default version at the end when it's deployed.

Additionally, I tried to edit WEBSITE_NODE_DEFAULT_VERSION variable in Configuration (Settings > Configuration > WEBSITE_NODE_DEFAULT_VERSION) but I couldn't save because the host name doesn't include "azurewebsites.net".

Is there any way to specify the node version or edit WEBSITE_NODE_DEFAULT_VERSION?

Answer 1

Node Version for your app Kudu needs to know which version of node you want to run your app and deployment. It will try to find the version you want by following these steps. If not satisfied, goes to the next step:

1. If there is an iisnode.yml and nodeProcessCommandLine property inside: it will run that exact path of node.
2. If in your package.json, there is an "engines":{"node":version} specification, Azure will use the specified version
3. In Application Settings on the Azure portal, you have WEBSITE_NODE_DEFAULT_VERSION set as one of the environment variables
4. The default Node version for Azure. The exact version changes over time.

I think iisnode.yml does not have node version which you require.create iisnode.yml and include below line

nodeProcessCommandLine: "D:\\Program Files (x86)\\nodejs\\8.9.4\\node.exe"

More deatils read here:

• https://blog.lifeishao.com/2017/03/24/custom-nodejs-deployment-on-azure-web-app/
• Upgrading Node on an Azure website?