Reverse Proxy with 500k connections

[larsg]

Hi Guys,

we solved the problem and I wanted to give you feedback about the solution.
Finally it was an problem with our linux ip routes.
After implementing source based policy routing this nginx configuration
worked.

Thank you for your support!

Kind Regards
Lars

Summary of Solution:

split_clients "${remote_addr}${remote_port}AAAA" $source_ip {
  10% 192.168.1.130;
  10% 192.168.1.131;
...
  * 192.168.1.139;
}

server {
  listen              443 ssl backlog=163840;
  proxy_bind          $source_ip;
...

ip rule ls
0:	from all lookup local 
32754:	from 192.168.1.139 lookup es-source-eth9 
...
32756:	from 192.168.1.130 lookup es-source-eth0 
32766:	from all lookup main 
32767:	from all lookup default 

ip route list table es-source-eth9
192.168.1.0/24 dev eth9  scope link

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,272808,272915#msg-272915