Number of Linux open files too many open file solution

The reason for this is that the program opened the file/socket the number of connections exceeds the system set value.
View the maximum number of open files per user
Ulimit-a
where open files (-N) 1024 indicates that the maximum number of files allowed per user is 1024

Maximum number of current system file handles, only for viewing, Cannot set modification
Cat/proc/sys/fs/file-max

To view the number of open file limits for a process
cat/proc/10446 (PID)/limits

Set the open files numeric method
Ulimit-n 4096 Setup methods revert to their default values after they are restarted.

Permanent setting Method:
Vim/etc/security/limits.conf
At the end of the join
* Soft nofile 4096
* Hard Nofile 4096
Effective requires a reboot of the system

Number of Linux open files too many open file solution