How to change the 'open file' for root permanently?

thomas2004ch · 11-20-2009, 02:14 AM

I will increase the number of 'open file' for root from default (1024) to 5000. I did first as follow:

Code:

ulimit -n 5000

Seems working. But as I login again the number returns to 1024. It seems in this way the number cannot be changed permanently.

Then I try edit the /etc/security/limits.conf as follow:

Code:

#<domain>      <type>  <item>         <value>
root             -     nofile       5000

But it doesn't work. The number is still 1024 as I list it with ulimit -a

Someone has idea?

centosboy · 11-20-2009, 02:29 AM

Quote:

Originally Posted by thomas2004ch

I will increase the number of 'open file' for root from default (1024) to 5000. I did first as follow:

Code:

ulimit -n 5000

Seems working. But as I login again the number returns to 1024. It seems in this way the number cannot be changed permanently.

Then I try edit the /etc/security/limits.conf as follow:

Code:

#<domain>      <type>  <item>         <value>
root             -     nofile       5000

But it doesn't work. The number is still 1024 as I list it with ulimit -a

Someone has idea?

If using bash, set this in the .bash_profile assuming it is for a certain user.
If system wide, set in /etc/profile.
After setting in either of those files the activate it.

Code:

source .bash_profile or /etc/profile

then logout and back in again to test

bigrigdriver · 11-20-2009, 02:31 AM

I found this at http://www.logos.ic.i.u-tokyo.ac.jp/...Linux%2Fulimit

Quote:

↑
Changing the User Max File Descriptor Limit †
add the following lines to /etc/security/limits.conf
* soft nofile 8192
* hard nofile 8192
soft limit, is the default max value you get when you login
hard limit, is the max value to which you can raise using the ulimit command.

Change the number 8192 to 5000 in the example above, then see if it works for you.

thomas2004ch · 11-20-2009, 04:26 AM

Quote:

Originally Posted by bigrigdriver

I found this at http://www.logos.ic.i.u-tokyo.ac.jp/...Linux%2Fulimit

Change the number 8192 to 5000 in the example above, then see if it works for you.

Your example

Code:

* soft nofile 8192

is not good. This will change all the other user's 'OpenFile' limit.

thomas2004ch · 11-20-2009, 04:31 AM

Quote:

Originally Posted by centosboy

If using bash, set this in the .bash_profile assuming it is for a certain user.
If system wide, set in /etc/profile.
After setting in either of those files the activate it.

Code:

source .bash_profile or /etc/profile

then logout and back in again to test

You mean set the 'open file' limit in .bash_profile?