Unhandled exception. System.IO.IOException: The configured user limit (128) on the number of inot…

在ubuntu上编写asp.net core 程序，编译时出现错误：System.IO.IOException: The configured user limit (128) on the number of inotify instances has been reached.

方案一：

1. sudo vim /etc/sysctl.conf
2. 增加下面内容（环境变量）

• fs.inotify.max_user_watches = 1638400
• fs.inotify.max_user_instances = 1638400

3. save the file
4. sudo sysctl -p

方案二：

1. 增加临时环境变量 export DOTNET_USE_POLLING_FILE_WATCHER=true

方案三

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