Socket error, info "Invalid Argument"

From: John Helliwell <>
Date: Wed, 30 Mar 2011 12:42:28 +0100

Hi all,

We are using HAproxy as a L7 load balancer on our busy phpBB3 based forums, and we are finding it excellent.
We would like to upgrade to haproxy-1.5-dev in order to use the rate limiting as described in

However, this has not been possible, due to the fact that in haproxy-1.5-dev the httpchk fails, and all backend servers are marked down.

Mar 30 11:30:19 localhost haproxy[24995]: Server to-slow-queue/forum-admin1 is DOWN, reason: Socket error, info: "Invalid argument", check duration: 0ms. 1 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.

Also, it cannot syslog due to

[ALERT] 088/120607 (26987) : sendto logger #0 failed: Invalid argument (errno=22)

The relevant config extract for this is

   option httpchk GET /health.html

backend webservers

    server forum-web1 minconn 6 maxconn 10 weight 12 check inter 2s fastinter 500ms downinter 10s slowstart 60000

The machine is a Sun Fire V125 with an UltraSPARC-IIIi processor, compiled locally using gcc version 3.4.3 using
gmake TARGET=solaris ARCH=ultrasparc USE_PCRE=1

I can provide full haproxy.cfg if required.

Is this a known issue? I hope someone can assist.

Kind Regards

John Helliwell Received on 2011/03/30 13:42

This archive was generated by hypermail 2.2.0 : 2011/03/30 13:45 CEST