keepalived ,lvs，tomcat 高可用，高併發，高效能  應用架構的搭建

keepalived ,lvs 搭建在同一臺伺服器上，兩個tomcat 分別在一個tomcat上 

四臺伺服器版本 ：  centos 6.5

yum install ipvsadm -y

keepalived : etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
   notification_email {
     [email protected]
   }
   notification_email_from

[email protected]
   smtp_server 192.168.184.178
   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 {
        192.168.184.222/24 dev eth0 label eth0:A
    }
}

virtual_server 192.168.184.222 80 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
    nat_mask 255.255.255.0
    persistence_timeout 50
    protocol TCP

    real_server 192.168.184.188 80 {
        weight 1
        HTTP_GET {
            url {
              path /
              status_code 200
        }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }  
    real_server 192.168.184.168 80 {
        weight 1
        HTTP_GET {
            url {
              path /
              status_code 200
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 2
        }
    }
}

=================

! Configuration File for keepalived

global_defs {
   notification_email {
     [email protected]
   }
   notification_email_from [email protected]
   smtp_server 192.168.184.178
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 51
    priority 10
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.184.222/24 dev eth0 label eth0:A
    }
}

virtual_server 192.168.184.222 80 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
    nat_mask 255.255.255.0
    persistence_timeout 50
    protocol TCP

    real_server 192.168.184.188 80 {
        weight 1
        HTTP_GET {
            url {
              path /
              status_code 200
        }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
    real_server 192.168.184.168 80 {
        weight 1
        HTTP_GET {
            url {
              path /
              status_code 200
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 2
        }
    }
}


   

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  tomcat 伺服器上需要配置 在裝置上配置lo:A  IP地址