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I am trying to increase the hard/soft open files limit on an Ubuntu 22.04

After reviewing questions such as this one, this one or that one and tutos such as this one or that one, I have made the following changes to my system:

  1. Modify /etc/security/limits.conf to include two lines
* soft nofile 8192
* hard nofile 8192
  1. Created /etc/security/limits.d/10-openfiles.conf with that same two lines
* soft nofile 8192
* hard nofile 8192
  1. Added session required pam_limits.so to /etc/pam.d/common-session*
  2. Uncommented DefaultLimitNOFILE on the section [Manager] of /etc/systemd/user.conf and set it to 8192
  3. Uncommented DefaultLimitNOFILE on the section [Manager] of /etc/systemd/system.conf and set it to 8192
  4. systemctl daemon-reexec then reboot (init 6)

No matter what, ulimit -Sn shows 1024 and ulimit -Hn shows 1048576

cat /proc/sys/fs/file-max is huge, 9223372036854775807

That makes me think there must be another config file taking precedence...

System is an Azure VM with an standard Ubuntu 22 server image

Any help greatly appreciated

UPDATE

This answer points to a user-related config file in /home or /etc/profile.d/ but both grep -rnw '/etc/profile.d/' -e '1048576' and grep -rnw '/home/' -e '1048576' show empty results

UPDATE 2

cat /proc/sys/fs/nr_open shows 1048576, so I guess that's from where the hard limit is coming. Question remains, though. How can I change the soft limit to 8192 files?

jmcollantes
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0 Answers0