Error when running watchman

Question

When I run react-native start, I am getting the following message

Error: A non-recoverable condition has triggered. Watchman needs your help! The triggering condition was at timestamp=1489123194: inotify-add-watch(/var/www/html/eventManager/android/app/src/main/res/mipmap-mdpi) -> 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> (/var/www/html/bookLister/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:852:16)
at Socket.<anonymous> (internal/child_process.js:323:11)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at Pipe._handle.close [as _onclose] (net.js:492:12)

Answer 1

echo 256 | sudo tee -a /proc/sys/fs/inotify/max_user_instances
echo 32768 | sudo tee -a /proc/sys/fs/inotify/max_queued_events
echo 65536 | sudo tee -a /proc/sys/fs/inotify/max_user_watches
echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf
sudo sysctl -p

watchman shutdown-server

This one helped

Answer 2

Just run these commands in terminal:

echo 256 | sudo tee -a /proc/sys/fs/inotify/max_user_instances
echo 32768 | sudo tee -a /proc/sys/fs/inotify/max_queued_events
echo 65536 | sudo tee -a /proc/sys/fs/inotify/max_user_watches
watchman shutdown-server  

Other Way make Script in package.json

"scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest",
    "flow": "flow",
    "flow-stop": "flow stop",
    "watch-need-help": "echo 256 | sudo tee -a /proc/sys/fs/inotify/max_user_instances && echo 32768 | sudo tee -a /proc/sys/fs/inotify/max_queued_events && echo 65536 | sudo tee -a /proc/sys/fs/inotify/max_user_watches && watchman shutdown-server"
  },

Run following command on Terminal in project directory

npm run watch-need-help

Answer 3

Increase inotify limit to increase the limit on the number of files you can monitor.

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

Please go through this for more info