搭建双主模型lpvs的高可用集群

一、实验要求：

1、基于LVS-DR模型上实践；

2、调度器高可用（双主模型）；

二、实验拓扑图：

三、实验步骤：

1、  设置RS

(a)设置http主页

Yum install httpd

Vim /var/www/html/index.html

<h1>172.18.24.3 server 1或者172.18.24.5
server 2</h1>

(b)设置RS的VIP

Vim setRS.sh

#!/bin/bash

vip=172.18.24.10                        

vip2=172.18.24.11

mask=’255.255.255.255′

iface=’lo:0’

iface2=’lo:1’

case $1 in

start)

         echo
1 > /proc/sys/net/ipv4/conf/all/arp_ignore

         echo
1 > /proc/sys/net/ipv4/conf/lo/arp_ignore

         echo
2 > /proc/sys/net/ipv4/conf/all/arp_announce

         echo
2 > /proc/sys/net/ipv4/conf/lo/arp_announce

         ifconfig
lo:0 $vip netmask $mask broadcast $vip up

         route
add -host $vip dev $iface

         ifconfig
lo:0 $vip2 netmask $mask broadcast $vip2 up

         route
add -host $vip2 dev $iface2

                                               ;;

stop)

         ifconfig
$iface down

         ifconfig
$iface2 down

echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore

         echo
0 > /proc/sys/net/ipv4/conf/lo/arp_ignore

         echo
0 > /proc/sys/net/ipv4/conf/all/arp_announce

         echo
0 > /proc/sys/net/ipv4/conf/lo/arp_announce

                                               ;;

*)

         echo
“Usage $(basename $0) start|stop”

         exit
1

                                               ;;

         esac

在RS上运行脚本 setRS.sh start

重启httpd服务

2、  配置VS

Yum install httpd Keepalived

Vim /var/www/html/inde.html

Sorry server 1 或者sorry
server2

(a) 设置VS1主从信息

global_defs {

  
notification_email {

       
root@localhost

   }

 

  
notification_email_from keeplived@localhost

  
smtp_server 127.0.0.1

  
smtp_connect_timeout 30

  
router_id test1                         

  
vrrp_mcast_group4 224.0.100.24

}

vrrp_instance myr1 {

   
state MASTER                       

   
interface eth0                        

   
virtual_router_id 67

   
priority 100                           

   
advert_int 1

   
authentication {

       
auth_type PASS

       
auth_pass UIpYPPDI

}

vrrp_instance
myr2 {

    state BACKUP                    

    interface eth0                    

    virtual_router_id 68

    priority 98                    

    advert_int 1

    authentication {

        auth_type PASS

        auth_pass UIpYPPDi

    }

    virtual_ipaddress {

        172.18.24.11/16 dev eth0   

    }

}

   
virtual_ipaddress {

       
172.18.24.10/16 dev eth0            

    }

   
notify_master “/etc/keepalived/notify.sh master”

   
notify_backup “/etc/keepalived/notify.sh backup”

   
notify_fault “/etc/keepalived/notify.sh fault”

}

 

virtual_server 172.18.24.10 80 {                 

   
delay_loop 6

   
lb_algo wrr

   
lb_kind DR

   
protocol TCP

   
sorry_server 127.0.0.1 80

   
real_server 172.18.24.3 80 {

       
weight 1

       
HTTP_GET {

           
url {

              path /

              status_code 200

           
}

           
connect_timeout 3

           
nb_get_retry 3

           
delay_before_retry 3

       
}

}

    real_server 172.18.24.5 80 {

        weight 1

        HTTP_GET {

            url {

              path /

              status_code 200

            }

            connect_timeout 3

            nb_get_retry 3

            delay_before_retry 3

        }

    }

}

(b)设置VS2主从信息

global_defs {

  
notification_email {

       
root@localhost

   }

 

  
notification_email_from keeplived@localhost

  
smtp_server 127.0.0.1

  
smtp_connect_timeout 30

  
router_id test4                        

  
vrrp_mcast_group4 224.0.100.24

}

vrrp_instance myr1 {

   
state   BACKUP             

   
interface ens38                        

   
virtual_router_id 67

   
priority 98                           

   
advert_int 1

   
authentication {

       
auth_type PASS

       
auth_pass UIpYPPDI

}

vrrp_instance
myr2 {

    state MASTER                    

    interface ens38                    

    virtual_router_id 68

    priority 100                   

    advert_int 1

    authentication {

        auth_type PASS

        auth_pass UIpYPPDi

    }

    virtual_ipaddress {

        172.18.24.11/16 dev  ens38  

    }

}

   
virtual_ipaddress {

    172.18.24.10/16 dev ens38

    }

   
notify_master “/etc/keepalived/notify.sh master”

   
notify_backup “/etc/keepalived/notify.sh backup”

   
notify_fault “/etc/keepalived/notify.sh fault”

}

 

virtual_server 172.18.24.11 80 {                  

   
delay_loop 6

   
lb_algo wrr

   
lb_kind DR

   
protocol TCP

   
sorry_server 127.0.0.1 80

   
real_server 172.18.24.3 80 {

       
weight 1

       
HTTP_GET {

           
url {

              path /

              status_code 200

           
}

           
connect_timeout 3

           
nb_get_retry 3

           
delay_before_retry 3

       
}

}

    real_server 172.18.24.5 80 {

        weight 1

        HTTP_GET {

            url {

              path /

              status_code 200

            }

            connect_timeout 3

            nb_get_retry 3

            delay_before_retry 3

        }

    }

}

(c)Systemctl start httpd  Systemctl start keepalived

3、测试 curl http://172.18.24.10  curl http://172.18.24.11

检测结果：不论是访问172.18.24.10还是172.18.24.11，最终显示以下的轮询结果，

<h1>172.18.24.3 server 1</h1>或者<h1>172.18.24.5
server 2</h1>