Q: Plesk How to install additional modules? i have troubles using Node Js with Plesk. I have a Root Server (Ubuntu + Plesk Onyx) and installed Node Js. My API runs well. But now I have a new API Build, and must install new Node modules. (Hummus.js) When I want to install it through my package.json I get = 

Execution filemng has failed with exit code 1, stdout:
  hummus@1.0.81 install /var/www/vhosts/XXX/api.XXX/node_modules/hummus
  node-pre-gyp install --fallback-to-build

I think the problem is failed dependencies for Hummus. 
So I want to do
npm install -g node-gyp

But how can I run it with plesk? I have only a "NPM Install" button but it run install package.json 

A: Plesk locates npm for its node versions under /opt/plesk/node. Like /opt/plesk/node/6 or /opt/plesk/node/7 So to install modules you should run:
/opt/plesk/node/7/bin/npm install -g node-gyp  

