描述：1、前端两台NGINX，通过keepalived虚拟IP漂移，实现前端两台NGINX高可用；2、利用NGINX反向代理功能对后端varnish实现高可用集群,

3、再通过varnish实现动静分离

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注：1、先装Nginx +keepalived

2、装varnish3、装lamp需要6台虚拟机（100-101装Nginx +keepalived：100主，101备）需要联网（102-103装varnish）需要联网（104-105装lamp）需要联网

所有主机必做的步骤systemctl stop firewalld      //关闭防火墙setenforce 0         //关闭监控

1、装Nginx +keepalived（两台机子都要做的）（100主101备）systemctl stop firewalld      //关闭防火墙setenforce 0         //关闭监控cd /etc/yum.repos.d/mv back/* ./

yum install -y epel-release

yum install -y nginx

yum install keepalived -y

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主（80.100）

vi /etc/keepalived/keepalived.conf(把里面内容全删了添加以下内容)! Configuration File for keepalived global_defs {         route_id NGINX-01    }vrrp_script nginx {        script "/opt/nginx.sh"        interval 2        weight -10}vrrp_instance VI_1 {    state MASTER    interface ens32    virtual_router_id 51    priority 150    advert_int 1    authentication {        auth_type PASS        auth_pass 1111    }    track_script {        nginx        }    virtual_ipaddress {        192.168.80.188    }}

scp /etc/keepalived/keepalived.conf root@192.168.80.101:/etc/keepalived/keepalived.conf

备（80.101）

vi /etc/keepalived/keepalived.conf（修改以下画圈部分）

主（80.100）

vi /opt/nginx.sh（添加以下内容）#!/bin/bashA=$(ps -ef | grep keepalived | grep -v grep | wc -l)if [ $A -gt 0 ];then        systemctl start nginxelse        systemctl sop nginxfi

chmod +x /opt/nginx.shll /opt/nginx.sh

netstat -anpt | grep nginxsystemctl start keepalivednetstat -anpt | grep nginx

ip addr show ens32

备（80.101）

vi /opt/nginx.sh（添加以下内容）#!/bin/bashA=$(ip addr | grep 192.168.80.188/32 | grep -v grep | wc -l)if [ $A -gt 0 ];then        systemctl start nginx else        systemctl stop nginxfi

chmod +x /opt/nginx.shsystemctl start keepalivedcat /var/log/messages

主（80.100）

cat /var/log/messages

vi /etc/nginx/nginx.conf（修改以下内容）upstream varnish_pool {              server 192.168.80.102:80;              server 192.168.80.103:80;       }proxy_pass http://varnish_pool;proxy_set_header Host $host;proxy_set_header X-Forwarded-For $remote_addr;

nginx -t

scp /etc/nginx/nginx.conf 192.168.80.101:/etc/nginx/nginx.conf

systemctl restart nginx

2、装varnish（80.102,80.103）（两台机子都需要做）systemctl stop firewalld      //关闭防火墙setenforce 0         //关闭监控cd /etc/yum.repos.d/mv back/* ./yum  install epel-release -y  //需要联网

yum install -y varnish

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vi /etc/varnish/varnish.params（修改环圈部分）

vi /etc/varnish/default.vcl（修改添加以下部分）backend web1 {    .host = "192.168.80.104";    .port = "80";}backend web2 {    .host = "192.168.80.105";    .port = "80";}sub vcl_recv {if (req.url ~ "(?i)\.php$"){    set req.backend_hint = web1;}else{    set req.backend_hint = web2;}

systemctl  start varnishnetstat -anpt | grep varnish

80.103

vi /etc/varnish/varnish.params（修改以下内容）

（80.102）

scp /etc/varnish/default.vcl 192.168.80.103:/etc/varnish/default.vcl

80.103

systemctl start varnishnetstat -anpt | grep varnish

3、装lamp（两台机子都要做的）（100主101备）systemctl stop firewalld      //关闭防火墙setenforce 0         //关闭监控cd /etc/yum.repos.d/mv back/* ./安装wgetyum install -y  wget

yum install -y httpd

systemctl start httpdsystemctl enable httpd获取rpm软件包：wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm

安装rpm包rpm -ivh mysql-community-release-el7-5.noarch.rpm

安装mysqlyum install -y mysql-community-server

启动 systemctl start mysqlsystemctl enable mysql修改root密码并设置允许远程连接进入mysql  mysql -uroot

设置root密码为123456set password for 'root'@'localhost' =password('123456');设置允许用root账户进行远程连接，并设置其密码为123456grant all privileges on *.* to root@'%'identified by '123456';修改的配置立即生效flush privileges;退出：exit

部署phpyum install -y php

安装组件是php支持mysql yum install -y \php-mysql \php-gd \libjpeg* \php-ldap \php-odbc \php-pear \php-xml \php-xmlrpc \php-mbstring \php-bcmath \php-mhash

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80.104

vi /etc/httpd/conf/httpd.conf（修改以下内容）ServerName www.example.com:80去掉#号

systemctl start httpdecho "
192.168.80.101
" > /var/www/html/index.php

80.105

vi /etc/httpd/conf/httpd.conf（修改以下内容）ServerName www.example.com:80去掉#号

systemctl start httpdecho "
192.168.80.102
" > /var/www/html/index.html

任务栏搜索192.168.80.100

任务栏搜索192.168.80.102

任务栏搜索192.168.80.103

任务栏搜索192.168.80.104

任务栏搜索192.168.80.105

任务栏搜索192.168.80.188