Question on HAProxy

Good afternoon.
Recently faced with the fact that HAProxy has fallen under a load of 8,000 simultaneous connections.
When allowed traffic directly to web server — everything went fine.
The server was originally optimized network stack and OS.

Characteristic under load — web srever marked as offline, although in direct address, they worked very, very quickly.

If anyone has done this, happy to discuss options for resolving the issue.

Thank you.
October 8th 19 at 03:04
1 answer
October 8th 19 at 03:06
IMHO the number of sockets exceeded the permissible norm, see configure sysctl.
what's in the logs then? what if you try the Telnet from the host to the haproxy server?
I have haproxy holds about 20K at the peak of the old servers. - Rae_Altenwer commented on October 8th 19 at 03:09
I guess the reason is somewhere in the limits of the OS. The server is RHEL6.1
Is it possible to see your sysctl settings?
Thank you - Hanna62 commented on October 8th 19 at 03:12

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