centos/redhat: change open files ulimit without reboot?
25,634
You can just change it as root. For example:
$ ulimit -n
4096
$ ulimit -n 8192
bash: ulimit: open files: cannot modify limit: Operation not permitted
$ sudo bash
# ulimit -n
4096
# ulimit -n 8192
# su - normaluser
$ ulimit -n
8192
Author by
user3531602
Updated on September 18, 2022Comments
-
user3531602 almost 2 years
The hard limit of the number of open files is set to 1024 on my machine.
- I changed /etc/security/limits.conf and added 'idror hard nofile 65000'.
- In my shell I tried ulimit -n 65000. I get 'ulimit: value exceeds hard limit'
- In my shell I tried ulimit -Hn 65000. I get 'ulimit: can't raise hard limits'
So how can I increase the setting for the limit of open files without reboot?
-
Admin over 11 yearsAfter a
limits.conf
change, you need to log out and back in.