On Sat, Jun 06, 2020 at 02:32:19PM +0800, Tiezhu Yang wrote: > It is important to ensure that files that are opened always get closed. > Failing to close files can result in file descriptor leaks. One common > answer to this problem is to just raise the limit of open file handles > and then restart the server every day or every few hours, this is not > a good idea for long-lived servers if there is no leaks. > > If there exists file descriptor leaks, when file-max limit reached, we > can see that the system can not work well and at worst the user can do > nothing, it is even impossible to execute reboot command due to too many > open files in system. In order to reboot automatically to recover to the > normal status, introduce a new cmdline argument exceed_file_max_panic for > user to control whether to call panic in this case. ulimit -n is your friend.
