LVS+keepalived+httpd高可用集群

https://pan.baidu.com/s/1-CQpVGPsxLJveUxo_9ZPmQ //软件百度网盘连接

环境：
主keepalived服务器：192.168.80.100
从keepalived服务器:   192.168.80.101

Web服务器:192.168.80.102
		  192.168.80.103

---

在80.100虚拟机上

systemctl stop firewalld  //关闭防火墙
setenforce 0   //关闭监控

yum install lrz* -y   //安装上传软件 

tar xf keepalived-1.4.2.tar.gz -C/opt/  //解压keepalived-1.4.2.tar.gz文件到/opt/

cd /opt/ keepalived-1.4.2/

yum -y install gcc gcc-c++ make popt-devel kernel-devel openssl-devel

./configure --prefix=/
make && make install
cd /etc/
ls | grep keepalived

cd keepalived/
vi keepalived.conf 
把里面内容全删掉换成

! Configuration File for keepalived
global_defs {
   router_id LVS_01            //本服务器的名称
}
vrrp_instance VI_1 {            //定义VRRP热备实例
    state MASTER             //热备状态，MASTER表示主服务器，BACKUP表示从服务器
    interface ens32            //承载VIP地址的物理接口
    virtual_router_id 51        //虚拟路由器的ID号，每个热备组保持一致
    priority 150               //优先级，数值越大优先级越高
    advert_int 1               //通告间隔秒数（心跳频率）
    authentication {            //热备认证信息，每个热备组保持一致
        auth_type PASS        //认证类型
        auth_pass 6666        //密码字符串
    }
    virtual_ipaddress {          //指定漂移地址（VIP），可以有多个
        192.168.80.188
    }
}
virtual_server 192.168.80.188 80 {      //虚拟服务器地址（VIP）、端口
        delay_loop 6               //健康检查的间隔时间（秒）
        lb_algo rr                  //轮询（rr）调度算法
        lb_kind DR                 //直接路由（DR）群集工作模式
        persistence_timeout 60       //连接保持时间（秒）
        protocol TCP                //应用服务器采用的是TCP协议
real_server 192.168.80.102 80 {         //第一个Web服务器节点的地址、端口
        weight 1                   //节点的权重
        TCP_CHECK {                //健康检查方式
        connect_port 80             //检查的目标端口
        connect_timeout 3           //连接超时（秒）
        nb_get_retry 3              //重试次数
        delay_before_retry 3          //重试间隔
        }
}
real_server 192.168.80.103 80 {           //第二个Web服务器节点的地址、端口
        weight 1
        TCP_CHECK {
             connect_port 80
             connect_timeout 3
             nb_get_retry 3
             delay_before_retry 3
     }
  }
}
:wq

service keepalived start
systemctl status keepalived

ip add show ens32

modprobe ip_vs
yum install ipvsadm -y
service keepalived restart
ipvsadm -Ln

---

在80.101虚拟机上

systemctl stop firewalld  //关闭防火墙
setenforce 0   //关闭监控

yum install lrz* -y   //安装上传软件

tar xf keepalived-1.4.2.tar.gz -C/opt/  //解压keepalived-1.4.2.tar.gz文件到/opt/
cd /opt/ keepalived-1.4.2/

yum -y install gcc gcc-c++ make popt-devel kernel-devel openssl-devel

./configure --prefix=/
make && make install
modprobe ip_vs
yum install ipvsadm -y

vi /etc/keepalived/keepalived.conf
删掉里面的所有内容添加以下内容
! Configuration File for keepalived
global_defs {
   router_id LVS_02
}
vrrp_instance VI_1 {
    state BACKUP
    interface ens32
    virtual_router_id 51
    priority 105
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 6666
    }
    virtual_ipaddress {
        192.168.80.188
    }
}
virtual_server 192.168.80.188 80 {
        delay_loop 6
        lb_algo rr
        lb_kind DR
        persistence_timeout 60
        protocol TCP
real_server 192.168.80.102 80 {
        weight 1
        TCP_CHECK {
        connect_port 80
        connect_timeout 3
        nb_get_retry 3
        delay_before_retry 3
        }
}
real_server 192.168.80.103 80 {
        weight 1
        TCP_CHECK {
             connect_port 80
             connect_timeout 3
             nb_get_retry 3
             delay_before_retry 3
     }
  }
}
:wq

service keepalived start
service keepalived status

---

在80.102虚拟机上

systemctl stop firewalld  //关闭防火墙
setenforce 0   //关闭监控

yum install httpd -y        //安装httpd

vi /etc/httpd/conf/httpd.conf 
找到#ServerName www.example.com:80吧#去掉

cd /var/www/html/      //进入目录
echo "SERVER AA" > index.html       //在index.html添加内容
 systemctl start httpd         //重启httpd
 ./web.sh
ifconfig

---

在80.103虚拟机上

systemctl stop firewalld  //关闭防火墙
setenforce 0   //关闭监控

yum install httpd -y        //安装httpd

vi /etc/httpd/conf/httpd.conf 
找到#ServerName www.example.com:80吧#去掉

cd /var/www/html/        //进入目录
echo "SERVER BB" > index.html       //在index.html上添加内容
 systemctl start httpd      //重启httpd

vi web.sh
 添加以下内容
 #!/bin/bash
#haha
ifconfig lo:0 192.168.80.188 broadcast 192.168.80.188 netmask 255.255.255.255 up
route add -host 192.168.80.188 dev lo:0
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
sysctl -p &>/dev/null
:wq
 chmod +x web.sh
./web.sh      //执行脚本

ifconfig      //查看网卡

scp web.sh root@192.168.80.102:/root/
yes
自己设的root密码

效果网页输入192.168.80.188