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  • 系统结构实践第三次作业

    1.完成Docker-compose的安装

    由于是Mac os,安装docker时已经捆绑安装了docker-compose,用docker --version即可查看版本

    2.dockerfile以及配置文件等

    2.1基础文件建立

    brew install tree
    

    先安装好tree以后新建文件夹以及dockerfile等文件

    mkdir docker-compose
    touch docekr-compose.yml
    touch dockerfile_mysql
    touch dockerfile_php
    touch dockerfile_nginx
    mkdir web
    mkdir mysql_data
    touch default.conf
    

    2.2编写文件内容

    docker-compose.yml

    version: "3"
    services:
     nginx:
        image: mynginx_image               
        container_name: mynginx             
        build:
          context: .
          dockerfile: dockerfile_nginx      #指定dockerfile文件
        ports:
          - "80:2020"                       
        volumes:
          - ./web:/web/html                
          - ./default.conf:/etc/nginx/conf.d/default.conf     
    
     php:
        image: myphp_image 
        container_name: myphp 
        build:
          context: .
          dockerfile: dockerfile_php 
        environment:
          MYSQL_PASSWORD: 123            
        volumes:
          - ./web:/web/php                  
    
     mysql:
       image: mysql_image 
       container_name: mysql
       build:
          context: .
          dockerfile: dockerfile_mysql
       ports:
         - "3306:3306"
       volumes:
         - ./mysql_data:/var/lib/mysql       
    

    docekrfile_nginx

    FROM nginx
    
    EXPOSE 2020
    

    dockerfile_mysql

    FROM mysql
    
    ENV MYSQL_ROOT_PASSWORD 123
    
    ENV MYSQL_ALLOW_EMPTY_PASSWORD no
    

    dockerfile_php

    FROM php:7.4-fpm
    FROM php:7.4-fpm
    RUN apt-get update && apt-get install -y 
            libfreetype6-dev 
            libjpeg62-turbo-dev 
            libpng-dev 
        && docker-php-ext-install pdo_mysql 
        && docker-php-ext-configure gd --with-freetype --with-jpeg 
        && docker-php-ext-install -j$(nproc) gd
    

    default.conf

    server {
        listen       2020;        
        server_name  localhost;
    
        location / {
            root   /web/html;     
            index  index.html index.htm;
        }
    
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /usr/share/nginx/html;
        }
    
        location ~ .php$ {
            root           /web/php;          
            fastcgi_pass   myphp:9000;        
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name; 
            include        fastcgi_params;
        }
    }
    

    3.使用Compose实现多容器运行机制

    docker-compose up -d
    


    之前出现error是因为mysql的3306端口被占用,原因是本机打开了sqlserver服务,从本机设置里关闭sqlserver即可

    4.修改php

    <?php
    $servername = "mysql_container";
    $username = "root";
    $password = "123456";
      
    try {
        $conn = new PDO("mysql:host=$servername;", $username, $password);
        echo "连接成功";
    }
    catch(PDOException $e)
    {
        echo $e->getMessage();
    }
    ?>
    

    5.数据库相关操作

    <?php
    $servername = "mysql";
    $username = "root";
    $password = "123";
     
    try {
        $conn = new PDO("mysql:host=$servername", $username, $password);
        echo "连接成功"; 
    
        $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        $sql = "CREATE DATABASE myDB";
        $conn->exec($sql);
    
        echo "数据库创建成功<br>";
    }
    catch(PDOException $e)
    {
        echo $sql . "<br>" . $e->getMessage();
    }
    $conn = null;
    ?>
    

    建表

    <?php
    $servername = "mysql";
    $username = "root";
    $password = "123";
    $dbname="myDB";        
     
    try {
        $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);    #选择数据库
        $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        // 使用 sql 创建数据表
        $sql = "CREATE TABLE user(
        id INT(8) UNSIGNED PRIMARY KEY, 
        name VARCHAR(30) NOT NULL
    )";
        
        $conn->exec($sql);
        echo "数据表 user 创建成功";
    }
    catch(PDOException $e)
    {
        echo $sql . "<br>" . $e->getMessage();
    }
     
    $conn = null;
    ?>
    

    向表中插入数据

    <?php
    $servername = "mysql";
    $username = "root";
    $password = "123";
    $dbname="myDB";
     
    try {
        $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
        $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        // 开始事务
        $conn->beginTransaction();
        // SQL 语句
        $conn->exec("INSERT INTO user (id,name) 
        VALUES (031702145, 'mlz',)");
        $conn->exec("INSERT INTO user (id,name) 
        VALUES (031702140, 'pwz',)");
     
        // 提交事务
        $conn->commit();
        echo "新记录插入成功!";
    }
    catch(PDOException $e)
    {
        // 如果执行失败回滚
        $conn->rollback();
        echo $sql . "<br>" . $e->getMessage();
    }
     
    $conn = null;
    ?>
    

    6.小节

    因为用的Mac os,很多东西感觉都和linux不一样,自己也在重新再linux上面复现,这次的实验感觉花时间的地方主要是在找不同,去适应mac下面的东西,网上的资源也比较少,很多错误也没办法及时的找到问题根源

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  • 原文地址:https://www.cnblogs.com/mlz031702145/p/12850145.html
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