打开的文件太多 - 无法初始化 inotify：已达到 inotify 实例总数的用户限制

Question

如何解决以下问题？我正在使用指南针。

   Too many open files - Failed to initialize inotify: the user limit on the total number of inotify instances has been reached.
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/rb-inotify-0.9.5/lib/rb-inotify/notifier.rb:64:in `initialize'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/adapters/linux.rb:66:in `initialize_worker'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/adapter.rb:87:in `initialize'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/adapters/linux.rb:31:in `initialize'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/adapter.rb:226:in `works?'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/adapter.rb:190:in `usable_and_works?'
org/jruby/RubyEnumerable.java:1425:in `all?'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/adapter.rb:190:in `usable_and_works?'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/adapter.rb:57:in `select_and_initialize'
org/jruby/RubyArray.java:1613:in `each'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/adapter.rb:55:in `select_and_initialize'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/listener.rb:291:in `initialize_adapter'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/listener.rb:283:in `setup'
    /home/rmack/Downloads/compass.app/lib/ruby/jruby/listen-1.3.1-patched/lib/listen/listener.rb:65:in `start!'
    /home/rmack/Downloads/compass.app/lib/ruby/compass_1.0/sass-3.4.13/lib/sass/plugin/compiler.rb:405:in `listen_to'
    /home/rmack/Downloads/compass.app/lib/ruby/compass_1.0/sass-3.4.13/lib/sass/plugin/compiler.rb:338:in `watch'
    /home/rmack/Downloads/compass.app/lib/ruby/compass_1.0/compass-1.0.3/lib/compass/sass_compiler.rb:46:in `watch!'
    /home/rmack/Downloads/compass.app/lib/ruby/compass_1.0/compass-1.0.3/lib/compass/commands/watch_project.rb:41:in `perform'
file:/home/rmack/Downloads/compass.app/compass-app.jar!/app_watcher.rb:12:in `watch!'
file:/home/rmack/Downloads/compass.app/compass-app.jar!/ui/tray.rb:447:in `watch'

Answer 1

对于 Linux：

检查

max_user_instances

的当前值：

$ cat /proc/sys/fs/inotify/max_user_instances

增加该值：

$ echo 256 | sudo tee /proc/sys/fs/inotify/max_user_instances

为了使更改永久添加一行到

/etc/sysctl.conf

：

fs.inotify.max_user_instances = 256

Answer 2

这通常是 linux 配置问题。 增加打开文件的数量

/etc/security/limits.conf

：

看起来你正在使用 Mac OS，在这种情况下你应该使用 sysctl。 将以下添加到

/etc/sysctl.conf

：

kern.maxfiles=your new value kern.maxfilesperproc=your new value

Answer 3

为我解决：https://github.com/guard/rb-inotify/issues/23#issuecomment-22997846

# increase inotify file watch limit
ofile=/proc/sys/fs/inotify/max_user_instances
sudo sh -c "echo 8192 > $ofile"
cat $ofile
rerun app.rb

Answer 4

对于 Ubuntu 22.04，它不起作用：

sudo sh -c 'echo 256 > /proc/sys/fs/inotify/max_user_instances'

为了临时改变它必须使用这个：

sudo sysctl fs.inotify.max_user_instances=8192

它确实像之前评论的那样工作：

获取当前值：

cat /proc/sys/fs/inotify/max_user_instances

为了永久保存，添加这一行：

fs.inotify.max_user_instances = 256

用这个命令：

sudo vi /etc/sysctl.conf

Answer 5

如其他评论中所述，您可以尝试查找无法与文件系统正常工作的应用程序。

但在某些情况下没关系，只有某些应用程序（在我的例子中是 Felix OSGI 缓存）打开的文件太多并且限制太低。

然后打开

/etc/security/limits.conf

并为用户或组添加限制行，即：

dmatej          soft    nofile          10000