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docs: handling "System limit for number of file watchers reached" error (#25551) 

Co-authored-by: Sam Firke <sfirke@users.noreply.github.com>
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nitish-samsung-jha 2023-11-16 21:30:42 +05:30 committed by GitHub
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@ -610,6 +610,31 @@ Then put this:
export NODE_OPTIONS=--no-experimental-fetch
```
If while using the above commands you encounter an error related to the limit of file watchers:
```bash
Error: ENOSPC: System limit for number of file watchers reached
```
The error is thrown because the number of files monitored by the system has reached the limit.
You can address this this error by increasing the number of inotify watchers.
The current value of max watches can be checked with:
```bash
cat /proc/sys/fs/inotify/max_user_watches
```
Edit the file /etc/sysctl.conf to increase this value.
The value needs to be decided based on the system memory [(see this StackOverflow answer for more context)](https://stackoverflow.com/questions/535768/what-is-a-reasonable-amount-of-inotify-watches-with-linux).
Open the file in editor and add a line at the bottom specifying the max watches values.
```bash
fs.inotify.max_user_watches=524288
```
Save the file and exit editor.
To confirm that the change succeeded, run the following command to load the updated value of max_user_watches from sysctl.conf:
```bash
sudo sysctl -p
```
#### Webpack dev server
The dev server by default starts at `http://localhost:9000` and proxies the backend requests to `http://localhost:8088`.