Domain – Haproxy and CNAME

domainhaproxyip

I want to create a simple load balancer for the two servers.

The problem is with CNAME records, I think.

Let's say I have two the same applications on AppFog.com.

app1.aws.af.cm and app2.aws.af.cm

Here is my haproxy.cfg file:

global
    maxconn 2000
    daemon

defaults
    mode http
    clitimeout 60000
    srvtimeout 30000
    contimeout 4000
    option httpclose

listen http_proxy 
    bind [myip]:80
    mode http
    stats enable
    stats auth user:passwd
    stats uri /stats
    balance source
    option httpchk
    option forwardfor
    server host01 app1.aws.af.cm:80 maxconn 300 check
    server host02 app2.aws.af.cm:80 maxconn 300 check

But this only resolving IP for domain app1.aws.af.cm and app2.aws.af.cm, which obviously doesn't work if I open this IP in web browser.

The problem is that AppFog doesn't have public IP for application (same as OpenShift).

How to do that Haproxy to perform a proper connection between Load Balancer and this two servers?

Example:

This is real app – http://freechat.eu01.aws.af.cm

Haproxy only resolves IP for this domain which is 46.51.204.8:80

Of course this IP will not show my application, only an error page.

Sorry for my poor English.

Best Answer

Having a little trouble following your issue. However, one thing to keep in mind is that HTTP requests have the requested domain name as the Host field in the HTTP header.

Therefore load balancers and web servers will generally direct the request or respond to the request if the name binding matches the host header.

Perhaps this clears things up a little, or maybe you can try to rephrase your question?

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