With HAProxy, you could just define a list of target servers. You'd configure your app to talk to the HA IP, and then each request would go to next available server in the pool you have defined.

You could also simply do a DNS round robin if you wanted. All depends on what infrastructure/etc. you have available to you and how resilient it needs to be.

-- Nathan

On 08/06/2013 12:38 PM, SamyGo wrote:

Dear Nathan,

I think I've missed something. I don't understand how HAproxy and Floating IP and KeepAlived will help me? I need to
have all Active FS Servers and some mechanism to send ESL commands to them in round-robin fashion. I've an autodialer
script so that Proxy will help me use many FS Servers at the same time !

Thanks,
Sammy

On Tue, Aug 6, 2013 at 10:22 AM, Nathan Neulinger <nneul@mst.edu <mailto:nneul@mst.edu>> wrote:

    You might look at the keepalived page on wiki, that's what I use to float an IP in the case where only one of the FS
    instances should be online.

    You could also use HAProxy to define a group of systems for it to talk to if you want multiple to be online at once,
    but rotating between them.

    -- Nathan


    On 08/06/2013 12:19 PM, SamyGo wrote:

        Hi Nathan,

        I can only think of Round Robin with failover. I definitely don't want to parallel fork an ESL command.

        --
        Sammy

        On Tue, Aug 6, 2013 at 10:16 AM, Nathan Neulinger <nneul@mst.edu <mailto:nneul@mst.edu> <mailto:nneul@mst.edu

        <mailto:nneul@mst.edu>>> wrote:

             Are you saying "round robin" or "mirrored" for the commands?

             i.e. if you send a command over this proxy, would it be duplicated to all of the FS servers, or sent to "first
             available"?

             -- Nathan


             On 08/06/2013 12:05 PM, SamyGo wrote:

                 Dear Users,

                 I have come up with a requirement to have ESL connection made with multiple FS Servers at the same time
        and send
                 them
                 commands(no event receiving is required for now) The connections to FS should be pooled and monitored
        if any FS
                 goes down.

                 Is there any ESLproxy available to be used readily?

                 Thanks,
                 Sammy


             --

             ------------------------------____----------------------------__--
             Nathan Neulinger nneul@mst.edu <mailto:nneul@mst.edu> <mailto:nneul@mst.edu <mailto:nneul@mst.edu>>

             Missouri S&T Information Technology    (573) 612-1412
             System Administrator - Architect



    --
    ------------------------------__------------------------------
    Nathan Neulinger nneul@mst.edu <mailto:nneul@mst.edu>
    Missouri S&T Information Technology    (573) 612-1412
    System Administrator - Architect

--
------------------------------------------------------------
Nathan Neulinger                       nneul@mst.edu
Missouri S&T Information Technology    (573) 612-1412
System Administrator - Architect