LVS + Keepalived2016/06/12

global_defs {
    notification_email {
        root@dlp.srv.world
    }
    notification_email_from root@dlp.srv.world
    smtp_server 127.0.0.1
    smtp_connect_timeout 30
    router_id LVS_Server
}
vrrp_instance VI_1 {
    state BACKUP
    # monitored interface
    interface eth0
    # virtual router's ID
    virtual_router_id 51
    # set priority (change this value on each server)
    # (large number means priority is high)
    priority 100
    nopreempt
    # VRRP sending interval
    advert_int 1
    # authentication info between Keepalived servers
    authentication {
        auth_type PASS
        auth_pass password
    }

    virtual_ipaddress {
        # virtual IP address
        10.0.0.40 dev eth0
    }
}
virtual_server 10.0.0.40 80 {
    # monitored interval
    delay_loop 3
    # distribution method
    lvs_sched rr
    # routing method
    lvs_method DR
    protocol TCP

    # backend server#1
    real_server 10.0.0.51 80 {
        weight 1
        HTTP_GET {
            url {
                # monitored path
                path /
                # status code for normally state
                status_code 200
            }
            # timeout(sec)
            connect_timeout 3
        }
    }
    # backend server#2
    real_server 10.0.0.52 80 {
        weight 1
        HTTP_GET {
            url {
                path /
                status_code 200
            }
            connect_timeout 3
        }
    }
}