2020系统综合实践（三）

安装docker-compose

sudo curl -L "https://github.com/docker/compose/releases/download/1.25.5/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

sudo chmod +x /usr/local/bin/docker-compose

sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

docker-compose --version

编写Dockerfile

(1)、拉取镜像



（2）、建立文件夹docker_compose 里面有web和mysql_data子文件夹

（3）、编写文件
dockerfile_mysql

dockerfile_php

dockerfile_nginx

default.conf

docker-compose.yml

index.html

NGINX SUCCESS

index.php

<?php phpinfo();?>

使用compose实现多容器运行机制

sudo docker-compose up -d --build

访问localhost/index.php

测试

（1）、数据库连接测试，修改index.php

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

(2)、新建数据库，修改index.php

<?php
$servername = "mysql";
$username = "root";
$password = "123456";
 
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";

    // 使用 exec() ，因为没有结果返回
    $conn->exec($sql);

    echo "数据库创建成功<br>";
}
catch(PDOException $e)
{
    echo $sql . "<br>" . $e->getMessage();
}
$conn = null;
?>