To change the maximum number of opened files in the ubuntu system

This article describes how to modify the maximum number of files opened by the system in ubuntu. For more information, see Ubuntu.

Step 1: Configure/etc/security/limits. conf

Sudo vim/etc/security/limits. conf
Append at the end of a file

Copy codeThe code is as follows:
* Hard nofile 40960
* Soft nofile 40960

Step 2:/etc/pam. d/su (official) or/etc/pam. d/common-session (network)

Copy codeThe code is as follows:
Sudo vim/etc/pam. d/su

Remove the comments of pam_limits.so.

Copy codeThe code is as follows:
Sudo vim/etc/pam. d/common-session

Add the following line

Copy codeThe code is as follows:
Session required pam_limits.so

Step 3: Configure/etc/profile

Add the last line

Copy codeThe code is as follows:
Ulimit-SHn 40960

Last step: Restart

Ulimit-n verification. if it is displayed as 40960, it is OK.