Listen error 错误和 limit of inotify watches was reached

今天在生产环境中报错rails c中报了一个错误：

FATAL: Listen error: unable to monitor directories for changes.
Visit https://github.com/guard/listen/wiki/Increasing-the-amount-of-inotify-watchers for info on how to fix this.

　　报错后想看一下错误日志显示如下：

tailf: log/xxxxxx.log: cannot add inotify watch (limit of inotify watches was reached).

　　其实这个错误直接访问提示网站告诉的挺详细的。

解决方案：

• If you are running Debian, RedHat, or another similar Linux distribution, run the following in a terminal:

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

• If you are running ArchLinux, run the following command instead (see here for why):

echo fs.inotify.max_user_watches=524288 | sudo tee /etc/sysctl.d/40-max-user-watches.conf && sudo sysctl --system