MySQL operating system configuration optimization (TCP connection number / file open limit)

 

Set the number of TCP connections

 

 

 

Set the number of open files

 

View the number of open files

ulimit -a

Modify the file here

vi /etc/security/limits.conf

Modify the value of Soft nofile and Hard nofile 

 

After the modification is complete, restart, enter ulimit -a again to view the various limits of the directory

The unsuccessful modification may be that there is no modification permission to this file, or the firewall is open