企业项目实战----HAProxy（动静分离 | 读写分离）

ゞ浴缸里的玫瑰 2022-02-16 09:39 227阅读 0赞

## 实验环境 ##

继HAProxy负载均衡一文，详情点击这---->[点我查看详情][Link 1]

server1	172.25.64.1		haproxy			企业六
    server2	172.25.64.2		httpd			企业六
    server3	172.25.64.3		httpd			企业六
    客户端	172.25.64.250

## 一、动静分离 ##

server1(haproxy端)

[root@server1 mnt]# vim /etc/haproxy/haproxy.cfg 
    #################整个文件############
    加了##的是重点改动的！
    global
            maxconn         10000
            stats socket    /var/run/haproxy.stat mode 600 level admin
            log             127.0.0.1 local0
            uid             200
            gid             200
            chroot          /var/empty
            daemon
    
    defaults										##
            mode            http
           # option prefer-last-server
            retries         2
           # option redispatch
            timeout connect 5s
            timeout server  5s
    
    
    # The public 'www' address in the DMZ
    frontend public
            bind            *:80 name clear
            #bind            192.168.1.10:443 ssl crt /etc/haproxy/haproxy.pem
            mode            http
            log             global
            option          httplog
            option          dontlognull
            monitor-uri     /monitoruri
            maxconn         8000
            timeout client  30s
    
            stats uri       /admin/stats
           # use_backend     static if { hdr_beg(host) -i img }
            use_backend     dynamic if { path_end php }			##动态访问backend  dynamic
    
            default_backend static
    
    # The static backend backend for 'Host: img', /img and /css.
    backend static
            balance         roundrobin
           # option httpchk  HEAD /favicon.ico
            server          server2 172.25.64.2:80 check inter 1000
    
    # the application servers go here
    backend dynamic
            balance         roundrobin
            timeout queue   30s
           # option httpchk  HEAD /login.php
           # cookie          DYNSRV insert indirect nocachei
            server          server3 172.25.64.3:80 check inter 1000		##动态服务器
            fullconn        4000 # the servers will be used at full load above this number of connections
    #        server          dynsrv1 192.168.1.1:80 minconn 50 maxconn 500 cookie s1 check inter 1000
    
    [root@server1 mnt]# /etc/init.d/haproxy restart

server3（web服务器）

[root@server3 html]# yum install php -y
    [root@server3 html]# ls
    index.php								#动态
    [root@server3 html]# cat index.php 	
    <?php
    
    phpinfo();
    
    ?>
    [root@server3 html]# /etc/init.d/httpd restart

测试

静态：  
![在这里插入图片描述][20190422164219689.png]  
动态：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDI5NzMwMw_size_16_color_FFFFFF_t_70]

## 二、读写分离 ##

server1(haproxy端)

[root@server1 mnt]# vim /etc/haproxy/haproxy.cfg 
    ##################添加########################
     44         acl write method POST
     45         acl write method PUT
     46 
     47         acl read method GET
     48         acl read method HEAD
     49 
     50         use_backend     dynamic if write
     51 
     52         default_backend static
    
    [root@server1 mnt]# /etc/init.d/haproxy restart

server2（web服务器）

[root@server2 html]# yum install php -y
    [root@server2 html]# ls
    index.php  upload_file.php					#编写这两个文件
    [root@server2 html]# chmod 644 *
    [root@server2 html]# mkdir upload		
    [root@server2 html]# chmod 777 upload/
    [root@server2 html]# /etc/init.d/httpd restart
    [root@server2 upload]# scp -rp  /var/www/html/* root@172.25.64.3:/var/www/html/
    					#将/var/www/html/下的所有文件传到server3的/var/www/html/下
    
    
    [root@server2 html]# cat index.php			#index.php里的内容
    ##################################################################
    <html>
    <body>
    
    <form action="upload_file.php" method="post" 
    enctype="multipart/form-data">
    <label for="file">Filename:</label>
    <input type="file" name="file" id="file" />
    <br />
    <input type="submit" name="submit" value="Submit" />	#注意这，一会儿为了视觉效果会改
    </form>
    
    </body>
    </html>
    ################################################################
    
    [root@server2 html]# cat upload_file.php 		#upload_file.php里的内容
    ###############################################################
    <?php
    if ((($_FILES["file"]["type"] == "image/gif")
    || ($_FILES["file"]["type"] == "image/jpeg")
    || ($_FILES["file"]["type"] == "image/pjpeg"))
    && ($_FILES["file"]["size"] < 2000000))
      {
      if ($_FILES["file"]["error"] > 0)
        {
        echo "Return Code: " . $_FILES["file"]["error"] . "<br />";
        }
      else
        {
        echo "Upload: " . $_FILES["file"]["name"] . "<br />";
        echo "Type: " . $_FILES["file"]["type"] . "<br />";
        echo "Size: " . ($_FILES["file"]["size"] / 1024) . " Kb<br />";
        echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br />";
    
        if (file_exists("upload/" . $_FILES["file"]["name"]))
          {
          echo $_FILES["file"]["name"] . " already exists. ";
          }
        else
          {
          move_uploaded_file($_FILES["file"]["tmp_name"],
          "upload/" . $_FILES["file"]["name"]);
          echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
          }
        }
      }
    else
      {
      echo "Invalid file";
      }
    ?>
    ###############################################################

server3（web服务器）

[root@server3 html]# yum install php -y
    [root@server3 html]# ls
    index.php  upload  upload_file.php
    [root@server3 html]# /etc/init.d/httpd restart

**为了观看效果，在server2上微改：**

[root@server2 html]# rm -fr upload
    [root@server2 html]# ls
    index.php  upload_file.php
    [root@server2 html]# vim index.php 
    <html>
    <body>
    
    <form action="upload_file.php" method="post" 
    enctype="multipart/form-data">
    <label for="file">Filename:</label>
    <input type="file" name="file" id="file" />
    <br />
    <input type="submit" name="submit" value="Submit_server2_only_read" />	#此处改动
    </form>
    
    </body>
    </html>
    [root@server2 html]# /etc/init.d/httpd restart

测试

server3中的upload下啥都没有！  
![在这里插入图片描述][20190422174742943.png]  
server2中没有upload！  
![在这里插入图片描述][20190422174802786.png]  
**浏览器访问server1：**

有没有看到server2\_only\_read，读的时候访问的server2  
![在这里插入图片描述][20190422174945759.png]  
上传了一个图片：  
![在这里插入图片描述][20190422175135516.png]  
在server3中写入：

![在这里插入图片描述][20190422175231209.png]  
实现读写分离！

[Link 1]: https://blog.csdn.net/weixin_44297303/article/details/89445672
[20190422164219689.png]: /images/20220216/80f0828d61964a8c97ad42b79165c245.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDI5NzMwMw_size_16_color_FFFFFF_t_70]: /images/20220216/3f591ed98c1746f694614c54aeb59203.png
[20190422174742943.png]: /images/20220216/6ee449459bce4d72a6865c237c29676b.png
[20190422174802786.png]: /images/20220216/cee242b57cdd464fae922cd05620162c.png
[20190422174945759.png]: /images/20220216/09977970c5524c00b05873bfb613f1a3.png
[20190422175135516.png]: /images/20220216/09baf287d8e44aa392d6ee2be47c4e36.png
[20190422175231209.png]: /images/20220216/3e043e54cf424d20841d056368f4dd6f.png