Service Unavailable : 503


#1

Hi,

Here is our haproxy setup and haproxy setup and ha proxy is just acting proxy server(no load balancing)

example confguration

frontend http-in-ssl
bind *:80
bind *:443 ssl crt /etc/haproxy/ssl
log 127.0.0.1 local1 notice
option httplog
reqadd X-Forwarded-Proto:\ https
reqadd X-Forwarded-Proto:\ http

    acl alpha hdr(host) -i alpha.example.com
    acl beta hdr(host) -i beta.example.com
    redirect scheme https if !{ ssl_fc } alpha
    redirect scheme https if !{ ssl_fc } beta
    use_backend alpha-backend if { ssl_fc_sni alpha.verizon.com }
    use_backend beta-backend if { ssl_fc_sni beta.verizon.com }

backend alpha-backend
server alpha-server-server 192.168.1.100:8080 check inter 2000 maxconn 500 rise 2 fall 3
backend beta-backend
server beta-server-server 192.168.1.200:8090 check inter 2000 maxconn 500 rise 2 fall 3

==This is working fine if any one hits to the haproxy from external IP. Even curl is working fine when i exececute curl from my computer.

But When i try to curl alpha.example.com from beta.example.com it is not working. Here is the out put i am getting

root@test-betahost:~# curl -vvv -L http://beta.example.com

  • Rebuilt URL to: http:/beta.example.com/
  • Hostname was NOT found in DNS cache
  • Trying 192.168.1.10…
  • Connected to beta.example.com (192.168.1.10) port 80 (#0)

GET / HTTP/1.1
User-Agent: curl/7.35.0
Host: beta.example.com
Accept: /

< HTTP/1.1 302 Found
< Cache-Control: no-cache
< Content-length: 0
< Location: https://beta.example.com/
< Connection: close
<

CONNECTbeta.example.com:443 HTTP/1.1
Host: beta.example.com:443
User-Agent: curl/7.35.0
Proxy-Connection: Keep-Alive

< HTTP/1.1 503 Service Unavailable
< Cache-Control: no-cache
< Pragma: no-cache
< Content-Type: text/html; charset=utf-8
< Proxy-Connection: close
< Connection: close
< Content-Length: 1019
<

  • Received HTTP code 503 from proxy after CONNECT
  • Connection #1 to host proxy.ebiz.example.com left intact
    curl: (56) Received HTTP code 503 from proxy after CONNECT

Could some one please help me for this?


#2

curl is not connecting to beta.example.com, but trying to connect to a proxy called “proxy.ebiz.example.com”. The proxy is sending the 503, as you can see:

* Received HTTP code 503 from proxy after CONNECT
* Connection #1 to host proxy.ebiz.example.com left intact
curl: (56) Received HTTP code 503 from proxy after CONNECT