ENOSPC: System limit for number of file watchers reached | Ubuntu | Emberjs

Shajahan A — Thu, 23 Jan 2020 15:23:12 +0000

If you are facing this issues

Stack Trace and Error Report: /tmp/error.dump.9d22f10a74fb98f66d5b433d74cf4b9c.log
internal/fs/watchers.js:173
    throw error;
    ^

Error: ENOSPC: System limit for number of file watchers reached, watch '/home/mymachine/ember-app/tests/helpers'
    at FSWatcher.start (internal/fs/watchers.js:165:26)
    at Object.watch (fs.js:1329:11)
    at NodeWatcher.watchdir (/home/home/mymachine/node_modules/sane/src/node_watcher.js:159:22)
    at Walker.<anonymous> (/home/home/mymachine/node_modules/sane/src/common.js:109:31)
    at Walker.emit (events.js:223:5)
    at Walker.EventEmitter.emit (domain.js:475:20)
    at /home/home/mymachine/node_modules/walker/lib/walker.js:69:16
    at FSReqCallback.oncomplete (fs.js:146:23) {
  errno: -28,
  syscall: 'watch',
  code: 'ENOSPC',
  path: 'home/mymachine/tests/helpers',
  filename: 'home/mymachine/tests/helpers'
}

while working with emberjs in ubunut? Don't worry! We can fix it. It is just hitting your system's file watchers limit.

To increase the file watchers limit we need to do certain things, first
enter the following command in your terminal

cat /proc/sys/fs/inotify/max_user_watches

You might get output like this some integer.
8192

Now increase the limit by entering the next command

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

The above command will set your file watcher limit to 524288. To see whether it is set or not, type

sudo sysctl -p

output
fs.inotify.max_user_watches = 524288

Now, again run your ember server and it'll work fine.

I hope this post is helful to you, if yes then give a heart. Please comment if you have any issues. Do let me know if you need more emberjs related posts.

How to setup emberjs in ubuntu? | Ember 101

Shajahan A — Wed, 15 Jan 2020 15:29:04 +0000

This post covers a simple apporach on how to setup emberjs in unbutu.

Prerequisites
This guide assumes that you are using Ubuntu 18.04. Note: Throughout this post, we are gonna install either LTS or latest version of the packages.

Step 1: Install Nodejs

First refresh your local pacakge index

sudo apt update

Then copy-paste the following line to install LTS version of nodejs which is 12.14.1 at the time of writing.

curl -sL https://deb.nodesource.com/setup_12.14.1 | sudo -E bash - sudo apt install -y nodejs

Step 2: Install NPM

Now type the following line in your terminal to install the npm

sudo apt install npm

NPM helps you with installing and managing nodejs modules.
Now time to check both nodejs and npm are installed successfully or not by typing the following line in your terminal.

node -v
output:
12.14.1
npm -v
output:
6.13.4

Step 3: Install Emberjs

we are almost there, now you can install emberjs by using this single line command.

npm install -g ember-cli

Please verify the ember installation by typing this command in your terminal

ember --version

output:
ember-cli: 3.15.1 node: 12.14.1 os: linux x64

If you see the above output in your terminal, Congrats you are succesfully installed Emberjs in your machine.

Step 4: Create an new ember app

You can use the following command to create a new ember app.

ember new ember-hello-app

Once its done, now go into the application directory

cd ember-hello-app

Run

ember serve

After couple of seconds you will see the output like below

Livereload server on http://localhost:7020 Serving on http://localhost:4200/

Check the app by opening the url http://localhost:4200/