Error: ENOSPC: System limit for number of file watchers reached

Version: 

Domino 4.x 5.x with VSCode

Issue:

When running a workspace with VSCode an error prompt appears:

This is also visible in the support bundle logs with similar errors:

[File Watcher (node.js)] Failed to watch /home/ubuntu/.local/share/code-server/Machine/settings.json
for changes using fs.watch() (Error: ENOSPC: System limit for number of file watchers reached, watch
'/home/ubuntu/.local/share/code-server/Machine/settings.json

Root Cause:

This indicates that the VS Code file watcher is running out of handles because the workspace is large and contains many files

Resolution:

Before adjusting platform limits, make sure that potentially large folders, such as Python .venv, are added to the files.watcherExclude setting (more details below).

// Configure paths or glob patterns to exclude from file watching.
  "files.watcherExclude": {
    "**/.git/objects/**": true,
    "**/.git/subtree-cache/**": true,
    "**/node_modules/*/**": true,
    "**/.hg/store/**": true
  },

You would change this in either one of settings section as described here: 

• User Settings- Settings that apply globally to any instance of VS Code you open.
• Workspace Settings- Settings stored inside your workspace and only apply when the workspace is opened.

See the settings editor section further to make those changes.

*Note - to ensure that you can make change in the settings editor UI, look for the following setting:  

workbench.settings.useSplitJSON and enable this. This will give you two panes, a split pane on the left (read only editor) and a split pane on the right (writeable editor). Make your changes in the right pane and save.

You can also increase the max_user_watches value on the server side:

# insert the new value into the system config
echo fs.inotify.max_user_watches=<insert new watchers value> | sudo tee -a /etc/sysctl.conf && sudo sysctl -p

# check that the new value was applied
cat /proc/sys/fs/inotify/max_user_watches

The max value that could be placed here would be 524288  (maximum number of files that can be watched).

Notes:

https://code.visualstudio.com/docs/setup/linux#_visual-studio-code-is-unable-to-watch-for-file-changes-in-this-large-workspace-error-enospc