Create-react-native-app: issue running on ubuntu 16.04 (watchman)

[cj]

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

[anp]

@cj Thanks so much for the detailed report! You did identify the correct fix for this. I'll make a note to add watchman troubleshooting to the user guide.

[pauleonardo]

+1 nice solution!

[george-martin]

@cj thank you so much! +1

[jayabhar]

@cj Awesome !!

[asprazz]

@CJ Seriously Thank You so much You saved a lot of time of mine.

[Biplovkumar]

it really works fine.
but every day we launch webstorm and every day show error then every day this command giving by me.

plzz give permanent solution ,,,
i think it is temporary.
thanku cj.
your command really well work in ubuntu 16.04 but it is temporary solution.

[ide]

@Biplovkumar it sounds like your /etc/sysctl.conf file might be getting overwritten. Make sure you have those fs.inotify settings in your config file and that they persist as you use your computer, restart it, etc.

[Biplovkumar]

thanku so much sir @ide.
well i try to do it.

[mateusdotcc]

@ide Thanks for the solution!
After apply this, it was necessary todo this too:

https://facebook.github.io/watchman/docs/troubleshooting.html#ive-changed-my-limits-how-can-i-clear-the-error

[Biplovkumar]

thanku so much,it works fine.

Thanks & Regards.
Biplov kumar

Student
Mca
Vivekananda Institute of Professional Studies
https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=0ahUKEwiv8qXam_nLAhVWC44KHT3AA1cQFggcMAA&url=http%3A%2F%2Fwww.vips.edu%2F&usg=AFQjCNEKnNl-jafsVVUbN7tTK-CWiPRlFQ&sig2=lUiba0eZIFSPdVFZWg5Z5g&bvm=bv.118443451,d.c2E
New Delhi, IndiaMob: [phone]

Email:[email protected]
Email:[email protected]

On Mon, Feb 12, 2018 at 6:53 PM, Mateus Henrique [e-mail]
wrote:

@ide https://github.com/ide Thanks for the solution!
After apply this, it was necessary todo this too:

https://facebook.github.io/watchman/docs/troubleshooting.
html#ive-changed-my-limits-how-can-i-clear-the-error

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[LUCASNDIAS]

@cj Top!!!!

[satish11nov]

@cj worked for me. Thanks a lot.

[oulhafiane]

@cj nice solution

[oulhafiane]

@cj nice solution