3、再通過varnish實現動靜分離

註：1、先裝Nginx +keepalived
2、裝varnish
3、裝lamp
需要6臺虛擬機（100-101裝Nginx +keepalived：100主，101備）需要聯網（102-103裝varnish）需要聯網（104-105裝lamp）需要聯網

所有主機必做的步驟
systemctl stop firewalld      //關閉防火墻
setenforce 0         //關閉監控

1、裝Nginx +keepalived（兩臺機子都要做的）（100主101備）
systemctl stop firewalld      //關閉防火墻
setenforce 0         //關閉監控
cd /etc/yum.repos.d/
mv back/* ./
 

yum install -y epel-release

yum install -y nginx

yum install keepalived -y  

————————————————————————————————

主（80.100）

vi /etc/keepalived/keepalived.conf(把裏面內容全刪了添加以下內容)
! 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 [email protected]:/etc/keepalived/keepalived.conf

備（80.101）

vi /etc/keepalived/keepalived.conf（修改以下畫圈部分）

主（80.100）

vi /opt/nginx.sh（添加以下內容）
#!/bin/bash
A=$(ps -ef | grep keepalived | grep -v grep | wc -l)
if [ $A -gt 0 ];then
        systemctl start nginx
else
        systemctl sop nginx
fi
 

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

netstat -anpt | grep nginx
systemctl start keepalived
netstat -anpt | grep nginx

ip addr show ens32

備（80.101）

vi /opt/nginx.sh（添加以下內容）
#!/bin/bash

A=$(ip addr | grep 192.168.80.188/32 | grep -v grep | wc -l)
if [ $A -gt 0 ];then
        systemctl start nginx 
else
        systemctl stop nginx
fi

chmod +x /opt/nginx.sh
systemctl start keepalived
cat /var/log/messages

主（80.100）

cat /var/log/messages

vi /etc/nginx/nginx.conf（修改以下內容）
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、裝varnish（80.102,80.103）（兩臺機子都需要做）
systemctl stop firewalld      //關閉防火墻
setenforce 0         //關閉監控
cd /etc/yum.repos.d/
mv back/* ./
yum  install epel-release -y  //需要聯網

yum install -y varnish

————————————————————————————————

vi /etc/varnish/varnish.params（修改環圈部分）

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 varnish
netstat -anpt | grep varnish

80.103

vi /etc/varnish/varnish.params（修改以下內容）

（80.102）

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

80.103

systemctl start varnish
netstat -anpt | grep varnish

3、裝lamp（兩臺機子都要做的）（100主101備）
systemctl stop firewalld      //關閉防火墻
setenforce 0         //關閉監控
cd /etc/yum.repos.d/
mv back/* ./
安裝wget
yum install -y  wget

yum install -y httpd

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

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

安裝mysql
yum install -y mysql-community-server

啟動 
systemctl start mysql
systemctl enable mysql

修改root密碼並設置允許遠程連接
進入mysql  
mysql -uroot

設置root密碼為123456
set password for ‘root‘@‘localhost‘ =password(‘123456‘);

設置允許用root賬戶進行遠程連接，並設置其密碼為123456
grant all privileges on *.* to root@‘%‘identified by ‘123456‘;

修改的配置立即生效
flush privileges;

退出：
exit

部署php
yum install -y php

安裝組件是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

————————————————————————————————

80.104

vi /etc/httpd/conf/httpd.conf（修改以下內容）
ServerName www.example.com:80去掉#號

systemctl start httpd
echo "<h1>192.168.80.101</h1>" > /var/www/html/index.php

80.105

vi /etc/httpd/conf/httpd.conf（修改以下內容）
ServerName www.example.com:80去掉#號

systemctl start httpd
echo "<h1>192.168.80.102</h1>" > /var/www/html/index.html

任務欄搜索192.168.80.100

任務欄搜索192.168.80.102

任務欄搜索192.168.80.103

任務欄搜索192.168.80.104

任務欄搜索192.168.80.105

任務欄搜索192.168.80.188

Nginx +keepalived+varnish+lamp實現高可用、負載均衡集群