[javascript] Node.JS: Getting error : [nodemon] Internal watch failed: watch ENOSPC

I just installed Node.js on my Ubuntu 14.04 operating system for the first time. I also installed npm. The next step in my installation process was installing nodemon. This all worked out fine.

But, when I run nodemon by typing nodemon app.js in my command line, I get the following error...

[nodemon] 1.8.1 [nodemon] to restart at any time, enterrs [nodemon] watching: *.* [nodemon] startingnode app.js [nodemon] Internal watch failed: watch ENOSPC

In the command line below the error...

alopex@Alopex:~/Desktop/coding_dojo/week-9/javascript/node/testing_node$ Hello World

Why is this happening? Is this normal behavior for nodemon? If not, how can I fix it?

Side notes...

1) app.js is a Javascript file with console.log(111) inside of it.
2) node version is v0.10.25
3) npm version is 1.3.10
4) nodemon version is 1.8.1
5) ubuntu version is...

Distributor ID: Ubuntu
Description:    Ubuntu 14.04.3 LTS
Release:    14.04
Codename:   trusty

Add a nodemon.json configuration file in your root folder and specify ignore patterns for example:

nodemon.json

{
  "ignore": [
    "*.test.js", 
    "dist/*"
  ]
}

• Note that by default .git, node_modules, bower_components, .nyc_output, coverage and .sass-cache are ignored so you don't need to add them to your configuration.

Explanation: This error happens because you exceeded the max number of watchers allowed by your system (i.e. nodemon has no more disk space to watch all the files - which probably means you are watching not important files). So you ignore non-important files that you don't care about changes in them for example the build output or the test cases.

echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p

This worked for me

[nodemon] Internal watch failed: watch /home/Document/nmmExpressServer/bin ENOSPC
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] start: `nodemon ./bin/www`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the [email protected] start script.

This is the error I got when running nodemon ./bin/www.

The solution was closing an Atom window that had a entire directory of folders open in the project window.

I don't know why, but I'm assuming Atom and nodemon use similar processes to watch files/folders.

Try this....

echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p?

Will defiantly work

As per discussion over here, ENOSPC means Error No more hard-disk space available. Reason why this much memory required by nodemon or gulp-nodemon (in my case) is that it was watching contents of a folder which it shouldn't. To fix that nodemon has ignore setting that can be used to tell nodemon what not to watch. Have a look at nodemon sample config here.

Try reopening VS code or Atom with more specific directory where your app.js is present. I had a lot of folders opened and this problem occured. But once I opened my specific folder and tried once again, it worked.

in my case closing the visual studio code then starting the server did the trick

Operating system - ubuntu 16.4 lts

node.js version - 8.11.1

npm version - 6.0.0

Erik, You can just kill all the other node processes by

pkill -f node

and then restart your server again. It'll work just fine then.

I had the same error, but in Ubuntu 14.04 inside Windows 10 (Bash on Ubuntu on Windows). All I did to overcome the error was to update the Creators update, which then allowed me to install 16.04 version of Ubuntu bash and then after installing newest version of node (by this steps) I installed also the newest version of npm and then the nodemon started to work properly.

Instead of specifying a list of directories to ignore (e.g. negative), you can also specify a list of directories to watch (e.g positive):

nodemon --watch dir1 --watch dir2  dir1/examples/index.js

In my particular case, I had one directory I wanted to watch and about nine I wanted to ignore, so specifying '--watch' was much simpler than specifying '--ignore'

On running node server shows Following Errors and solutions:

nodemon server.js

[nodemon] 1.17.2

[nodemon] to restart at any time, enter rs

[nodemon] watching: .

[nodemon] starting node server.js

[nodemon] Internal watch failed: watch /home/aurum304/jin ENOSPC

sudo pkill -f node

or

echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p

If the operating system is Linux then just use it will work

 sudo npm run server