I've upgraded freeipa 4.6.x environment on Fedora 27 to 4.8.4 on fedora 31.

- remove old replica

- install fedora 31

- connect as new replica...

now:

389-ds-base-1.4.2.8-3.fc31.x86_64
freeipa-server-4.8.4-2.fc31.x86_64

after that, I have many errors: 

setup_pr_read_pds - Not listening for new connections - too many fds open

It looks like fd limit 1024

I've checked:

nsslapd-maxdescriptors:

ldapsearch -xLLL -b "cn=config" -D 'cn=Directory Manager' -W cn=config nsslapd-maxdescriptors
Enter LDAP Password:
dn: cn=config
nsslapd-maxdescriptors: 524288

/proc/limits:

cat /proc/2164872/limits
Limit                     Soft Limit           Hard Limit           Units    
Max cpu time              unlimited            unlimited            seconds  
Max file size             unlimited            unlimited            bytes    
Max data size             unlimited            unlimited            bytes    
Max stack size            8388608              unlimited            bytes    
Max core file size        unlimited            unlimited            bytes    
Max resident set          unlimited            unlimited            bytes    
Max processes             515206               515206               processes
Max open files            524288               524288               files    
Max locked memory         65536                65536                bytes    
Max address space         unlimited            unlimited            bytes    
Max file locks            unlimited            unlimited            locks    
Max pending signals       515206               515206               signals  
Max msgqueue size         819200               819200               bytes    
Max nice priority         0                    0                    
Max realtime priority     0                    0                    
Max realtime timeout      unlimited            unlimited            us        

dirsrv log:

[17/Mar/2020:09:12:18.119324801 +0100] - INFO - main - Setting the maximum file descriptor limit to: 524288

find /proc/2164872/fd | wc -l
1037

It looks like 1024 is connection limit.

Any idea what I've done wrong?

Best regards,

Ender - Lukasz Jaworski