lvs+keepalived

一）环境

主/备_director   ip 主  192.168.0.122    备   192.168.0.123      vip 192.168.0.125  (多vip 192.168.0.126)

source_real_server  ip  192.168.0.218  192.168.0.219  vip  lo: 192.168.0.125 192.168.0.126

二）real_server准备(两台服务器都执行)

#yum -y install httpd  

# ip addr add dev lo 192.168.0.126/32

# ip addr add dev lo 192.168.0.125/32

# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore 
# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce

# sysctl -p

注：测试所有的real_server服务器web的可实用行

三）director调度器配置

# yum -y install keepalived ipvsadm

#  cat /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
   router_id director2        
}
vrrp_script check_net {
   script "/etc/keepalived/keep.sh"
   interval 5
}

vrrp_instance VI_1 {
    state MASTER
    interface eth0        
   virtual_router_id 80
    priority 100        
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.0.125
        192.168.0.126
    }
track_script {
        check_net
    }
}

virtual_server 192.168.0.125 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    nat_mask 255.255.255.0
    protocol TCP
  

    real_server 192.168.0.218 80 {
        weight 1
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
    }
     
    real_server 192.168.0.219 80 {
        weight 1
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 80
        }
     }
}
virtual_server 192.168.0.126 8080 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    nat_mask 255.255.255.0
    protocol TCP
  

    real_server 192.168.0.218 8080 {
        weight 1
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port 8080
        }
    }
     
}

注：备director只需吧 MASTER 改成 BACKUP   pricoity  100 改成 priority  50

# service keepalived start

# ipvsadm -Ln  

IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  192.168.0.125:80 rr
  -> 192.168.0.218:80             Route   1      0          0     
  -> 192.168.0.219:80             Route   1      0          0

TCP 192.168.0.126:8080 rr 
  -> 192.168.0.218:8080           Route   1      0          0