issue running on ubuntu 16.04 (watchman)

OS Info:

± lsb_release -a
No LSB modules are available.
Distributor ID: neon
Description:    KDE neon LTS User Edition 5.8
Release:        16.04
Codename:       xenial

Run:

$ create-react-native-app my-app
$ cd my-app/
$ yarn start

Output:

± yarn start
yarn start v0.21.3
$ react-native-scripts start
Starting packager...
***ERROR STARTING PACKAGER***
Starting React Native packager...
Scanning 777 folders for symlinks in /home/cj/apps/react-native/my-app/node_modules (4ms)

Running packager on port 19001

Looking for JS files in
   /home/cj/apps/react-native/my-app



React packager ready.



jest-haste-map: Watchman crawl failed. Retrying once with node crawler.
  Usually this happens when watchman isn't running. Create an empty `.watchmanconfig` file in your project's root folder or initialize a git or hg repository in your project.
  Error: A non-recoverable condition has triggered.  Watchman needs your help!
The triggering condition was at timestamp=1489464468: inotify-add-watch(/home/cj/apps/react-native/my-app) -> The user limit on the total number of inotify watches was reached; increase the fs.inotify.max_user_watches sysctl
All requests will continue to fail with this message until you resolve
the underlying problem.  You will find more information on fixing this at
https://facebook.github.io/watchman/docs/troubleshooting.html#poison-inotify-add-watch


***ERROR STARTING PACKAGER***
 ERROR  A non-recoverable condition has triggered.  Watchman needs your help!
The triggering condition was at timestamp=1489464468: inotify-add-watch(/home/cj/apps/react-native/my-app) -> The user limit on the total number of inotify watches was reached; increase the fs.inotify.max_user_watches sysctl
All requests will continue to fail with this message until you resolve
the underlying problem.  You will find more information on fixing this at
https://facebook.github.io/watchman/docs/troubleshooting.html#poison-inotify-add-watch



{"watchmanResponse":{"version":"4.7.0","error":"A non-recoverable condition has triggered.  Watchman needs your help!\nThe triggering condition was at timestamp=1489464468: inotify-add-watch(/home/cj/apps/react-native/my-app) -> The user limit on the total number of inotify watches was reached; increase the fs.inotify.max_user_watches sysctl\nAll requests will continue to fail with this message until you resolve\nthe underlying problem.  You will find more information on fixing this at\nhttps://facebook.github.io/watchman/docs/troubleshooting.html#poison-inotify-add-watch\n"}}

***ERROR STARTING PACKAGER***

Error: A non-recoverable condition has triggered.  Watchman needs your help!
The triggering condition was at timestamp=1489464468: inotify-add-watch(/home/cj/apps/react-native/my-app) -> The user limit on the total number of inotify watches was reached; increase the fs.inotify.max_user_watches sysctl
All requests will continue to fail with this message until you resolve
the underlying problem.  You will find more information on fixing this at
https://facebook.github.io/watchman/docs/troubleshooting.html#poison-inotify-add-watch

    at ChildProcess.<anonymous> (/home/cj/apps/react-native/my-app/node_modules/fb-watchman/index.js:207:21)
    at emitTwo (events.js:106:13)
    at ChildProcess.emit (events.js:191:7)
    at maybeClose (internal/child_process.js:877:16)
    at Socket.<anonymous> (internal/child_process.js:334:11)
    at emitOne (events.js:96:13)
    at Socket.emit (events.js:188:7)
    at Pipe._handle.close [as _onclose] (net.js:498:12)

Done in 12.14s.

[cj]

I got it working by running:

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

[oulhafiane]

@cj nice solution