I've follow the instructions what I've found here, and I saw it in a lot of posts.
The /etc/security/limits.conf
* hard nofile 500000
* soft nofile 500000
root hard nofile 500000
root soft nofile 500000
The end of tye sysctl.conf
fs.file-max = 2097152
Restart the machine and after all here is the ulimit
root@my-machine:/etc# ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 31333
max locked memory (kbytes, -l) 16384
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 31333
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
Can somebody tell me why open files is 1024 and my changes why do not effects?