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Re: [lvs-users] real_server on the same machine where keepalived runs

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] real_server on the same machine where keepalived runs
From: "SJ Stanaitis" <sj.stanaitis@xxxxxxxxxxxx>
Date: Mon, 14 Nov 2011 08:43:25 -0500
I've done that before I actually had a dedicated LVS box running.  I
only used a standard TCP check at the time (port open, server up, port
closed, server down).  We had keepalived running on 2 boxes.  I'll see
if I can dig up the old configs for you if they might help.

--SJ



-----Original Message-----
From: lvs-users-bounces@xxxxxxxxxxxxxxxxxxxxxx
[mailto:lvs-users-bounces@xxxxxxxxxxxxxxxxxxxxxx] On Behalf Of dousti
Sent: Friday, October 28, 2011 2:37 PM
To: lvs-users@xxxxxxxxxxxxxxxxxxxxxx
Subject: [lvs-users] real_server on the same machine where keepalived
runs


Hi,

I have two hosts (10.175.151.157/22 and 10.175.151.158/22) that run a
udp
service. In order to provide HA, I'm using keepalived
(10.175.148.242/22) on
these two hosts. This is the conf of one of the hosts (the other one is
similar (with necessary changed):

vrrp_instance VI_1 {
        interface eth0
        state MASTER
        virtual_router_id 51
        priority 101
        authentication {
            auth_type PASS
            auth_pass PASS123
        }
        virtual_ipaddress {
                10.175.148.242
        }
}

virtual_server 10.175.148.242 4342 {
        delay_loop 30
        lb_algo wrr
        lb_kind DR
        protocol UDP

        real_server 10.175.151.157 4342 {
                weight 1
                MISC_CHECK {
                        misc_path /tmp/nc0.sh
                        }
        }
        real_server 10.175.151.158 4342 {
                weight 100
                MISC_CHECK {
                        misc_path /tmp/nc0.sh
                        }
        }

}

However the packets destined for 10.175.148.242:4342 do not seem to make
it
to any of the two servers. My question, can keepalived run on the same
hosts
as where the real_server runs? I even tried lb_kind NAT and it doesn't
seem
to be working.

Thanks for the help.

Ramin
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