Reverse Proxy with 500k connections

[larsg]

Hi Reinis,

yes, IPs exist:

ifconfig 
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.130  netmask 255.255.255.0  broadcast 192.168.1.255
        ether fa:16:3e:1e:ad:da  txqueuelen 1000  (Ethernet)
...
eth1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.131  netmask 255.255.255.0  broadcast 192.168.1.255

okay, I enabled net.ipv4.ip_nonlocal_bind=1 because nginx complained with an
error message "cannot bind/assign address".
net.ipv4.ip_nonlocal_bind solved that problem.
But now with our other kernel adjustments (Reverse Path Forwarding mode 2 —
Loose mode as defined in RFC 3704) this option does not have any effect.
So I disabled net.ipv4.ip_nonlocal_bind again.
But same result....upstream timed out...

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,272808,272862#msg-272862