[lvs-users] Connection Synchronisation for HA

M.Rajender rajender at visolve.com
Tue Dec 9 12:33:54 GMT 2014

Thanks for the information.

What you mean to say is that, we can synchronise the connections between 
*virtual/firewall* servers only and not between *application* servers. 
i.e, servers which acts as intermediate between two machines (client & 
internet) and which just forwards the request from one to another server.

Please correct me if i am wrong.

On 12/09/2014 03:31 AM, Jonathan Petersson wrote:
> I presume you're looking for something like this:
> http://backreference.org/2013/04/03/firewall-ha-with-conntrackd-and-keepalived/
> Although they're using keepalived in this example but you still want to get
> conntrackd going
> On Mon, Dec 8, 2014 at 11:09 AM, M.Rajender <rajender at visolve.com> wrote:
>> Hello All,
>> I have two Linux servers configured for High availability using
>> Heartbeat and everything is working fine.
>> But few of our applications use RPC calls for communication, which is a
>> state-ful connection. So when the fail-over happens we need to
>> re-connect the application since the connection gets terminated.
>> While checking the internet, I found that *ipvsadm* does Connection
>> Synchronisation between the servers.
>> This feature is wonderful; When a stand-by server becomes the active, it
>> will have all the information about the currently active connections and
>> will be able to continue to process the requests.
>> My goal is not achieving Linux Virtual Server and want to achieve HA for
>> state-full connection.
>> Please let me know whether the above will be possible using the LVS and
>> if possible, then can you provide me some tutorial (or) configuration
>> steps to achieve the same.
>> Thanks in advance.
>> --
>> Regards,
>> Rajender.M
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