一、规划

     

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                  OS:CentOS7 64bit
HAProxy+Keepalived-1:192.168.10.128
HAProxy+Keepalived-2:192.168.10.129
                VIP1:192.168.10.111
                VIP2:192.168.10.222
                WEB1:192.168.10.130:80
                WEB2:192.168.10.131:80


二、配置Keepalived(注:安装及配置详见http://wangzhijian.blog.51cto.com/6427016/1701577)


①配置keepalived主配置文件(配置文件大部相同)

      配置192.168.10.128做192.168.10.111的MASTER,192.168.10.222的BACKUP;

      配置192.168.10.128做192.168.10.111的BACKUP,192.168.10.222的MASTER.


a.192.168.10.128配置如下:

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# vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
   notification_email {
        root@localhost
        zhi@163.com                   ##设置邮件报警地址
   }
   notification_email_from zhi@zhi.com
   smtp_server 127.0.0.1
   smtp_connect_timeout 3
   router_id LVS_DEVEL
}
vrrp_script check_haproxy {                      ##添加haproxy服务监控脚本
      script "/etc/keepalived/check_haproxy.sh"  
      interval 2
      weight 2
}
vrrp_instance VI_1 {                         ##配置vrrp实例1
    state MASTER                     
    interface eno16777736
    virtual_router_id 51               ##实例1虚拟路由标识
    priority 101                      
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
track_script {                                 ##检测执行脚本
     check_haproxy
}
    virtual_ipaddress {
        192.168.10.111
    }
}
vrrp_instance VI_2 {                      ##配置vrrp实例2
    state BACKUP                         
    interface eno16777736
    virtual_router_id 52                 ##实例2虚拟路由标识
    priority 100                          
    advert_int 1
    garp_master_delay 5
    authentication {
        auth_type PASS
        auth_pass 1111
    }
 
virtual_ipaddress {
        192.168.10.222
    }


b.192.168.10.129配置如下:

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# vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
   notification_email {
        root@localhost
        zhi@163.com                   ##设置邮件报警地址
   }
   notification_email_from zhi@zhi.com
   smtp_server 127.0.0.1
   smtp_connect_timeout 3
   router_id LVS_DEVEL
}
vrrp_script check_haproxy {                      ##添加haproxy服务监控脚本
      script "/etc/keepalived/check_haproxy.sh"  
      interval 2
      weight 2
}
vrrp_instance VI_1 {                         ##配置vrrp实例1
    state BACKUP
    interface eno16777736
    virtual_router_id 51                     ##实例1虚拟路由标识
    priority 100
    advert_int 1
    garp_master_delay 5
    authentication {
        auth_type PASS
        auth_pass 1111
    }
 
track_script {                           ##检测执行脚本
     check_haproxy
}
virtual_ipaddress {
        192.168.10.111
    }
 
}
vrrp_instance VI_2 {                       ##配置vrrp实例2
    state MASTER
    interface eno16777736
    virtual_router_id 52                   ##实例2虚拟路由标识
    priority 101
    advert_int 1
    garp_master_delay 5
    authentication {
        auth_type PASS
        auth_pass 1111
    }
 
virtual_ipaddress {
        192.168.10.222
    }


②配置HAProxy检测脚本

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# vi /etc/keepalived/check_haproxy.sh
#!/bin/bash
if [ $(ps -C haproxy --no-header |wc -l) -eq 0 ]
then
    systemctl start haproxy
fi
sleep 2
if [ $(ps -C haproxy --no-header |wc -l) -eq 0 ]
then
    systemctl stop keepalived
fi
# chmod u+x /etc/keepalived/check_haproxy.sh


③开启keepalived并查看

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# systemctl start keepalived


192.168.10.128:

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现

192.168.10.129:

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现_02



三、配置HAProxy(注:安装及配置详见http://wangzhijian.blog.51cto.com/6427016/1702795)

①配置HAProxy主配置文件(配置文件相同)

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# vi /etc/haproxy/haproxy.cfg
# this config needs haproxy-1.1.28 or haproxy-1.2.1
global                                               ##全局配置
        log 127.0.0.1   local0
        log 127.0.0.1   local1 notice
        #log loghost    local0 info
        maxconn 4096
        chroot /usr/share/haproxy
        uid 99
        gid 99
        daemon
        #debug
        #quiet
defaults                                             ##默认配置
        log     global
        mode    http
        option  httplog
        option  dontlognull
        retries 3
        option redispatch
        maxconn 4000
        timeout connect 5000
        timeout client  50000
        timeout server  50000
frontend web                                                  ##前端代理
       bind 0.0.0.0:80
       acl www.zhi.com hdr(host) -i      
       use_backend www.zhi.com if www.zhi.com
       acl www.fly.com hdr(host) -i www.fly.com
       use_backend www.fly.com if  
backend                     ##后端www.zhi.com作用域 
        mode http
        balance source               ##保存session值
        option  httpchk /index.html
        server  192.168.10.130 192.168.10.130:80 check inter 2000 rise 2 fall 1
backend                    ##后端www.fly.com作用域  
        mode http
        balance source                 ##保存session值
        option  httpchk /index.html
        server  192.168.10.131 192.168.10.131:80 check inter 2000 rise 2 fall 1
listen status                           ##监控页面设置
        mode http
        bind 0.0.0.0:80
        stats enable
        stats hide-version
        stats uri     /haproxyadmin
        stats auth    admin:admin
        stats admin if TRUE


②开启HAProxy并查看

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# systemctl start haproxy

①浏览器输入192.168.10.128/haproxyadmin，输入账号密码查看

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现_03

②浏览器输入192.168.10.129/haproxyadmin，输入账号密码查看

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现_04

③浏览器输入192.168.10.111/haproxyadmin，输入账号密码查看

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现_05

④浏览器输入192.168.10.222/haproxyadmin，输入账号密码查看

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现_06



四、测试


①更改Windows的hosts文件

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C:\Windows\System32\drivers\etc\hosts
192.168.10.111     www.zhi.com
192.168.10.111     www.zhi.com
192.168.10.222     www.fly.com
192.168.10.222     www.fly.com


②测试1

ping www.zhi.com

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现_07

ping www.fly.com

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现_08


③测试2

192.168.10.128:

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# systemctl stop keepalived
# ip addr

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现_09

192.168.10.129:

# ip addr

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现_10

虚拟IP192.168.10.111已漂移至192.168.10.129，继续ping，依然通

HAProxy+Keepalived实现双主高可用负载均衡_HAProxy+Keepalived实现_11

OK了

本文出自 “记事本” 博客，请务必保留此出处http://wangzhijian.blog.51cto.com/6427016/1703552