Unhandled exception. System.IO.IOException: The configured user limit (128) on the number of inotify instances has been reached, or the per-process limit on the number of open file descriptors has been reached.

统信UOS问题

• 系统版本  (cat /proc/version)
  Linux version 4.19.0-arm64-desktop (deepin@deepin-PC) (gcc version 8.3.0 (Debian 8.3.0-6)) #1825 SMP Thu Sep 3 15:15:48 CST 2020
• docker 启动容器报错
  在统信UOS上部署.net core 程序，启动容器时出现错误：Unhandled exception. System.IO.IOException: The configured user limit (128) on the number of inotify instances has been reached, or the per-process limit on the number of open file descriptors has been reached.

解决方案

• 方案一
  sudo vim /etc/sysctl.conf
  增加下面内容（环境变量）

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

  sudo sysctl -p
• 方案二
  增加临时环境变量 export DOTNET_USE_POLLING_FILE_WATCHER=true
• 方案三(推荐)

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