CentOS7配置VIP

　　CentOS7 两台做vip飘逸，实现虚拟ip的跳转

两台机器

首先下载ipvsadm 和 keepalived

yum -y install ipvsadm keepalived

　　vim /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
   vrrp_skip_check_adv_addr
   vrrp_strict
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}

vrrp_instance VI_1 {
    state MASTER    #配置主 、 从  master backup
    interface ens33  #查看自己主机真实ip
    virtual_router_id 51
    priority 100   #优先级
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.189.181  #填写自己的虚拟ip
    }
}

virtual_server 192.168.189.181 80 {  #虚拟ip
    delay_loop 6
    lb_algo rr
    lb_kind DR   #DR模式
    net_mask 255.255.255.0 #网关
    protocol TCP

    real_server 192.168.189.137 80 {  #真实地址ip1
        weight 1
        TCP_CHECK {
            connect_port 80  # 端口
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
    real_server 192.168.189.138 80 {  #真实地址ip2
        weight 1
        TCP_CHECK {
            connect_port 80
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}　　

这一步完成即可看到vip的飘逸

下一步查看ipvsadm是否存在虚拟ip  （vip 和 ip）

  ipvsadm -a -t 192.168.189.181:80 -r 192.168.189.137:80 -g
  ipvsadm -a -t 192.168.189.181:80 -r 192.168.189.138:80 -g
  ipvsadm -Ln