[lvs-users] IPVSADM + Keepalived

[Bassem Mettichi <mettichi@xxxxxxxxx>]

Hello,
I am looking for some help with an issue with ipvsadm and keepalived.  i
have this configuration:

vrrp_instance VI_LB1 {
    state MASTER
    interface eth1
    virtual_router_id 145
    priority 200
    debug 5

    virtual_ipaddress {
        10.0.2.170 dev eth3

    }


virtual_server  10.0.2.170 80 {
    delay_loop 10
    lb_algo rr
    lb_kind NAT
    nat_mask 255.255.255.240
    #persistence_timeout 300
    #persistence_granularity 255.255.255.255
    protocol TCP

    real_server  10.0.2.162 8000 {
        weight 1
        HTTP_GET {
          url {
               path /alteon.html

               digest a7b8YT-3f1c10e9065bea9e94c9645a53
              }
              connect_timeout 3
              nb_get_retry 3
              delay_before_retry 3
        }
    }



real_server  10.0.2.168 8000 {
        weight 1
        HTTP_GET {
          url {
               path /alteon.html

               digest 2552f777ytRf14237efd294kjy944cac3
              }
              connect_timeout 3
              nb_get_retry 3
              delay_before_retry 3
        }
    }

}


my issue is that when i do a bench test with jmeter my loadbalancer start
dropping requests when i reach more than 270 req/sec, i have tested with
apache loadbalancer the same scenario and i can reach 700 req/sec, i don't
understand why ipvsadm and keepalived drop requests when we have more than
275 req/sec, but the main issue for LVS  and keepalived that there is any
log file except /var/log/messages and on ths file we didn't find any
information about why ipvsadm drop these requests. I hope someone can help
me.


Thanks a lot
Bassem
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