kubernetes-handbook/etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
   notification_email {
     root@localhost
   }
   notification_email_from kaadmin@localhost
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        172.20.0.119
    }
}

virtual_server 172.20.0.119 80{
    delay_loop 6
    lb_algo loadbalance
    lb_kind DR
    nat_mask 255.255.255.0
    persistence_timeout 0
    protocol TCP

    real_server 172.20.0.113 80{
        weight 1
        TCP_CHECK {
            connect_timeout 3
        }
    }
    real_server 172.20.0.114 80{
        weight 1
        TCP_CHECK {
            connect_timeout 3
        }
    }
    real_server 172.20.0.115 80{
        weight 1
        TCP_CHECK {
            connect_timeout 3
        }
    }
}