server2(haproxy):安装 haproxy
server3(静态服务器):在apache的默认发布目录下创建一个 images目录,并放一张图片
server4(动态服务器):安装php ,修改回 80 端口(之前做过端口转发,所以需要改回来)
【1】安装php
【2】/etc/httpd/conf/httpd.con 中修改端口 【3】vim index.php
【4】在页面中进行访问
【1】创建一个/var/www/html/images 放置图片
【2】在浏览器中访问
server2(haproxy):安装 haproxy
server3(读服务器):所有读取的动作都在server3
举例:上传图片时,在未点击上传时,一直时在server3中 安装PHP 读文件:在http默认发布目录中建立upload目录,并修改权限 ;将读写的php代码放入默认发布目录中server4(写服务器):写入都在server4
举例:点击上传后,是在server4中 写文件:在http默认发布目录中建立upload目录,并修改权限 ;将读写的php代码放入默认发布目录中【1】建立upload目录 此处以server4中为例,需要注意server3中也需要做此操作.
删除之前做动静分离实验时创建的index.php文件,将upload文件中的文件已到apache的默认发布目录中 【2】可读写的php代码 [root@server2 html]# /var/www/html/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" /> </form> </body> </html> [root@server2 html]# /var/www/html/upload_file.php <?php if ((($_FILES["file"]["type"] == "image/gif") || ($_FILES["file"]["type"] == "image/jpeg") || ($_FILES["file"]["type"] == "image/pjpeg")) && ($_FILES["file"]["size"] < 60000000)) { 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"; } ?>【3】修改配置文件
server2: vim /etc/haproxy/haproxy.cfg [root@server3 haproxy]# vim /etc/haproxy/haproxy.cfg acl read_request method GET acl read_request method HEAD acl write_request method PUT acl write_request method POST use_backend static if read_request use_backend app if write_request default_backend static # default_backend app #--------------------------------------------------------------------- # static backend for serving up images, stylesheets and such #--------------------------------------------------------------------- backend static balance roundrobin server static 172.25.15.3:80 check #--------------------------------------------------------------------- # round robin balancing between the various backends #--------------------------------------------------------------------- backend app balance roundrobin # balance source # balance static-rr server app1 172.25.15.3:80 check # server app2 172.25.14.5:80 check server backup 127.0.0.1:8000 backup【4】测试
选择想要上传的图片(读操作是在server3中)
点击Submit上传后出现如下信息,显示上传成功(写入到server4中了)
图片是被上传到了server4中的upload目录中