keepalived的VIP实例

实验环境:

两台调度器,一主一备

两台web服务器

IP地址分别为

192.168.200.111

192.168.200.112

192.168.200.113

192.168.200.114

利用keepalived实现主备的故障切换,从而交替提供服务

配置主调度器

1.安装依赖包

yum -y instsall ipvsadm keepalived

2.将配置文件进行备份,避免出错

cd /etc/keepalived

cp keepalived.conf keepalived.conf.bak

3.编辑配置文件

vim keepalived.conf

#全局配置

! 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_MASTER
}
 
#调度器配置
vrrp_instance VI_1 {#实例数
    state MASTER #角色名称
    interface eno16777728 #心跳网卡
    virtual_router_id 51
    priority 100  #优先权
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.200.254
    }
}
virtual_server 192.168.200.254 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR  #转换模式
protocol TCP
 
 
#节点服务器配置
    real_server 192.168.200.113 80 {
        weight 1
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        connect_port 80
        }
    }
real_server 192.168.200.114 80 {
        weight 1
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        connect_port 80
        }
    }
}

4.配置完成后启动服务

systemctl start keepalived 

5.查看VIP端口

ip a

6.查看调度服务

ipvsadm  -Ln

7.将主配置文件发送给备调度器,修改相应内容

scp /etc/keepalived/keepalived.conf 192.168.200.112:/etc/keepalived/

配置节点服务器:

1.安装apache服务

yum -y install httpd

2.添加路由

ifconfig lo:0 192.168.200.254 netmask 255.255.255.255

route  add -host 192.168.200.254 dev lo:0

3.创建测试网页

echo "11111" > /var/www/html/index.html

4.启动apache服务

systemctl start httpd

5.修改配置文件

vim /etc/sysctl.conf

添加内容;

net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.default.arp_ignore = 1
net.ipv4.conf.default.arp_announce = 2
net.ipv4.conf.lo.arp_ignore = 1
net.ipv4.conf.lo.arp_announce = 2

6.加载配置信息

sysctl -p

##每台节点服务器都要进行相同的配置

实验测试:

1.关闭所有服务器的防火墙和Linux安全机制

iptables -F

systemctl stop firewalld

setenforce 0

2.在浏览器中输入虚拟服务器的IP地址

这里我们用的是192.168.200.254

 

 

 

 

实现轮询的结果

posted @ 2019-10-08 14:51  Joshua¥A¥  阅读(1991)  评论(0编辑  收藏  举报