keepalived+lvs實(shí)驗(yàn)中l(wèi)vs的rr機(jī)制沒有輪詢

yangqwer123

使用倆臺(tái)主機(jī)安裝keepalived+lvs,倆臺(tái)主機(jī)做real server，lvs為DR模式，采用rr機(jī)制，測(cè)試時(shí)發(fā)現(xiàn)對(duì)于vip：192.168.122.100的請(qǐng)求都只能發(fā)送到其中一臺(tái)real server上，不能交替的發(fā)給后端倆臺(tái)real server ，沒有實(shí)現(xiàn)輪詢的機(jī)制，請(qǐng)指導(dǎo)~


keepalived配置文件
! Configuration File for keepalived

global_defs {

   router_id director1
}



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 {
       192.168.122.100
    }
}

virtual_server 192.168.122.100 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    nat_mask 255.255.255.0
    persistence_timeout 50
    protocol TCP
real_server 192.168.122.4 80 {
        weight 1
        HTTP_GET {
            url {
              path /test1.html
              digest 2ee55cb8cb23a5db1580d14aa37a5d27
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }

    real_server 192.168.122.5 80 {
        weight 1
        HTTP_GET {
            url {
              path /test2.html
              digest 8145db84654bc4c9dc5fa077a788c9db
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }

}

測(cè)試
# ab -c 100 -n 100 http://192.168.122.100/

ipvsadm查詢
Every 0.5s: ipvsadm -Lnc                                                            Sun Nov 17 06:16:34 2013

IPVS connection entries
pro expire state       source             virtual            destination
TCP 01:26  FIN_WAIT    192.168.122.1:39157 192.168.122.100:80 192.168.122.4:80
TCP 01:26  FIN_WAIT    192.168.122.1:39142 192.168.122.100:80 192.168.122.4:80
TCP 01:26  FIN_WAIT    192.168.122.1:39105 192.168.122.100:80 192.168.122.4:80
TCP 01:26  FIN_WAIT    192.168.122.1:39099 192.168.122.100:80 192.168.122.4:80
TCP 01:27  FIN_WAIT    192.168.122.1:39191 192.168.122.100:80 192.168.122.4:80
TCP 01:26  FIN_WAIT    192.168.122.1:39155 192.168.122.100:80 192.168.122.4:80
TCP 01:26  FIN_WAIT    192.168.122.1:39123 192.168.122.100:80 192.168.122.4:80
TCP 01:27  FIN_WAIT    192.168.122.1:39180 192.168.122.100:80 192.168.122.4:80
TCP 01:27  FIN_WAIT    192.168.122.1:39188 192.168.122.100:80 192.168.122.4:80
TCP 01:26  FIN_WAIT    192.168.122.1:39150 192.168.122.100:80 192.168.122.4:80
TCP 01:26  FIN_WAIT    192.168.122.1:39109 192.168.122.100:80 192.168.122.4:80
TCP 01:27  FIN_WAIT    192.168.122.1:39175 192.168.122.100:80 192.168.122.4:80
TCP 01:27  FIN_WAIT    192.168.122.1:39194 192.168.122.100:80 192.168.122.4:80
TCP 01:27  FIN_WAIT    192.168.122.1:39195 192.168.122.100:80 192.168.122.4:80
TCP 01:26  FIN_WAIT    192.168.122.1:39146 192.168.122.100:80 192.168.122.4:80
..............................

yangqwer123

查到問題了，是persistence_timeout 50保持時(shí)間引起的，設(shè)置了保持時(shí)間，模擬的批量請(qǐng)求在保持時(shí)間內(nèi)都被定向到同一臺(tái)機(jī)器了。