项目要求：

(1) 动静分离部署wordpress，动静都要能实现负载均衡，要注意会话的问题；

(2) 设计拓扑；

(3) haproxy的设计要求：

(a) stats page，要求仅能通过本地访问使用管理接口；

(b) 动静分离；

(4) haproxy高可用；

项目需求：

（1） 要实现haproxy高可用，可利用keepalived主备高可用两个haproxy服务器；（2）动态web集群【实现负载均衡，项目实验中使用两台即可】；（3）静态web集群【实现负载均衡，项目实验中使用两台即可】；使用CentOS 7.5镜像虚拟机完成项目试验：wordpress服务器 172.16.75.1 进行NFS共享给集群haproxy1 172.16.75.2haproxy2 172.16.75.2动态web集群 172.16.75.4 172.16.75.5静态web集群 172.16.75.6 172.16.75.7

设计拓扑：

一、两台haproxy主配置文件配置

~]#cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.bck //进行备份防止改错是吧，每次我们在更改主配置文件时最好备份~]# vim /etc/haproxy/haproxy.cfg //两台haproxy主机设置是相同的先将原先配置文件中maxconn这行以下的内容删除，然后添加图示内容即可；~]# systemctl start haproxy //确保之前没有开启httpd服务，此条命令执行后ss -tnl可以看到5000端口打开，查看状态，正常开启即可

二、keepalive配置

haproxy1 172.16.75.3 //要保证这两台haproxy的时间是同步的，且将防火墙以及SElinux关闭~]# hostnamectl set-hostname drct1~]# vim /etc/keepalived/keepalived.confglobal_defs { notification_email {

vrrp_script check_httpd {

script "killall -0 haproxy && exit 0 || exit 1"interval 1notification_email {

vrrp_script check_httpd {

script "killall -0 haproxy && exit 0 || exit 1"interval 1weight -20}vrrp_instance VI_1 { state MASTERinterface ens33virtual_router_id 51priority 100advert_int 1authentication { auth_type PASSauth_pass 1111nopreempt}

virtual_ipaddress {    172.16.72.1}notify_master "/etc/keepalived/notify.sh master"notify_backup "/etc/keepalived/notify.sh backup"notify_fault "/etc/keepalived/notify.sh fault"

}

[root@drct1 ~]# vim /etc/keepalived/notify.sh

#!/bin/bash

case $1 in

master)notify MASTER;;backup)notify BACKUPif ! killall -0 haproxy ; thensystemctl start haproxyfi;;fault)notify FAULT;;*)echo "Usage: $(basename $0) { master | backup | fault}";;esac~]# systemctl start keepalived

haproxy2 172.16.75.4 //注意文件路径呦

~]# hostnamectl set-hostname drct2keepalived]# vim keepalived.conf! Configuration File for keepalivedglobal_defs { notification_email {

notify_master "/etc/keepalived/notify.sh master"notify_backup "/etc/keepalived/notify.sh backup"notify_fault "/etc/keepalived/notify.sh fault"

}

drct2 keepalived]# vim notify.sh

#!/bin/bash

#

CONTACT='root@localhost'

notify() { MAILSUBJECT="$(hostname) changed state to $1, VIP reflact."MAILBODY="$(date +'%F %T'): VRRP STATUS CHANGED, $(hostname) change state to $1"echo "$MAILBODY" | mail -s "$MAILSUBJECT" "$CONTACT"}

case $1 in

master)notify MASTER;;backup)notify BACKUPif ! killall -0 haproxy ; thensystemctl start haproxyfi

;;

fault)

notify FAULTif ! killall -0 haproxy ; thensystemctl start haproxyfi

;;

*)

echo "Usage: $(basename $0) { master | backup | fault}";;esac然后我们这里将haproxy1服务器的keepalived宕掉 然后在haproxy2服务器中开启keepalived可以看到：这时就证明我们所做的高可用成功了；

三、动态主机和静态主机的配置

在172.16.75.1中部署wordpress并用NFS进行共享，这里共享以及wordpress我们不再赘述，因为博主有一篇专门写共享的，不懂的可以看博主的NFS共享的博客；动态主机中：172.16.75.4~]# mount -t nfs 172.16.72.1:/var/www/html /var/www/html~]# vim /var/www/html/health.php

<h1>DynamicServer 1 is Health.</h1>

172.16.75.5~]# mount -t nfs 172.16.72.1:/var/www/html /var/www/html~]# vim /var/www/html/health.php

<h1>DynamicServer 2 is Health.</h1>

静态主机中：

172.16.75.6~]# vim /var/www/html/health.html

<h1>DynamicServer 1 is Health.</h1>

172.16.75.7~]# vim /var/www/html/health.php

<h1>DynamicServer 2 is Health.</h1>

开启http服务并进将防火墙关闭：

~]# systemctl start httpd~]# setenforce 0

三、访问测试

访问：；

访问：

访问： //这是状态检测页面