Keepalived系列一：Keepalived.conf 详解

接上一篇博客：

http://www.cnblogs.com/xiaoit/p/4499703.html

1：按照上篇博客安装后的配置文件在

/usr/local/etc/keepalived/keepalived.conf

默认内容如下：

! Configuration File for keepalived

#全局定义块，以下模版不能省略
global_defs {
   #如有故障，发邮件的地址。
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1

   #邮件服务链接超时的最长时间
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

#前面定义的后备的负载均衡服务器名称
vrrp_instance VI_1 {
    #只有MASTER和BACKUP 两种状态，都必须大写。
    state MASTER
    #进行通信的端口
    interface eth0

    #同一个vrrp实例的唯一标识。即同一个vrrp_stance,MASTER和BACKUP的virtual_router_id是一致的。在整个vrrp内也唯一。
    virtual_router_id 51

    #权重，数值越大，权重越大。MASTER大于SLAVE
    priority 100

    #MASTER和SLAVE负载均衡器之间同步检查的时间间隔。单位是：秒
    advert_int 1

    #MASTER和SLAVE的认证方式
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.200.16
        192.168.200.17
        192.168.200.18
    }
}

#virtual_ipaddress，需要添加端口
virtual_server 192.168.200.100 443 {
    #服务健康检查周期，6秒
    delay_loop 6

    #负载均衡调度算法rr|wrr|lc|wlc|sh|dh|lblc
    lb_algo rr

    #负载均衡转发规则NAT|DR|TUN
    lb_kind NAT
    nat_mask 255.255.255.0

    #回话保持时间，如果是动态服务，建议开启。默认50秒
    persistence_timeout 50
    protocol TCP

    #真是IP
    real_server 192.168.201.100 443 {

        #权重，数值越大，权重越高。分发的可能越大
        weight 1
        SSL_GET {
            url {
              path /
              digest ff20ad2481f97b1754ef3e12ecd3a9cc
            }
            url {
              path /mrtg/
              digest 9b3a0c85a887a256d6939da88aabd8cd
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}

virtual_server 10.10.10.2 1358 {
    delay_loop 6
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP

    sorry_server 192.168.200.200 1358

    real_server 192.168.200.2 1358 {
        weight 1
        HTTP_GET {
            url {
              path /testurl/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334d
            }
            url {
              path /testurl2/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334d
            }
            url {
              path /testurl3/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334d
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }

    real_server 192.168.200.3 1358 {
        weight 1
        HTTP_GET {
            url {
              path /testurl/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334c
            }
            url {
              path /testurl2/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334c
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}

virtual_server 10.10.10.3 1358 {
    delay_loop 3
    lb_algo rr
    lb_kind NAT
    nat_mask 255.255.255.0
    persistence_timeout 50
    protocol TCP

    real_server 192.168.200.4 1358 {
        weight 1
        HTTP_GET {
            url {
              path /testurl/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334d
            }
            url {
              path /testurl2/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334d
            }
            url {
              path /testurl3/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334d
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }

    real_server 192.168.200.5 1358 {
        weight 1
        HTTP_GET {
            url {
              path /testurl/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334d
            }
            url {
              path /testurl2/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334d
            }
            url {
              path /testurl3/test.jsp
              digest 640205b7b0fc66c1ea91c463fac6334d
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}

参考：

http://www.keepalived.org/documentation.html