PHP 容器无法连接到 MySQL 容器

Question

我正在尝试从 PHP 容器连接到容器化的 MySQL DB，尽管所有容器都在同一网络上，但问题是我不断收到 Connection failed: invalid data source name当我点击 http://localhost:8080/dbTest.php尽管我已使用 mysql -u root -p 检查凭据是否正确并且 demo 数据库存在

我在 mysql 日志中看到这条消息 mbind: Operation not permitted 可能是相关的？
谢谢

Apache Dockerfile

FROM httpd:latest
RUN apt-get update
RUN apt-get upgrade
COPY demo.apache.conf /usr/local/apache2/conf/demo.apache.conf
RUN echo "Include /usr/local/apache2/conf/demo.apache.conf"  >> /usr/local/apache2/conf/httpd.conf

cmd:docker run -p 8080:80/tcp -v/home/hmalabeh/tutorial/docker/lamp/files/:/usr/local/apache2/htdocs/- -link=php --name apache --network backend -i 8f704f51962d

---

PHP Dockerfile

FROM php:7.2.7-fpm-alpine3.7
RUN docker-php-ext-install mysqli
RUN docker-php-ext-enable mysqli
RUN docker-php-ext-install pdo pdo_mysql
EXPOSE 9000

cmd:docker run -p 9000:9000 -v/home/hmalabeh/tutorial/docker/lamp/files/:/var/www/html/--name php - -网络后端-i 1cc049496b03

---

MySQL Dockerfile

FROM mysql:latest
RUN apt-get update
RUN apt-get upgrade
ENV MYSQL_ROOT_PASSWORD=root

cmd: docker run -p 3306:3306 -p 33060:33060 --name mysql --network backend --link=php -i 7bb7d4985301

---

dbTest.php

<?php
class DBConnect
{
    private $dsn = "mysql:dbname=demo;host=127.0.0.1;port=3306;";
    private $dbUsername = "root";
    private $dbPassword = "root";
    private $conn;

    public function connect()
    {
        try {
            echo 'Attempt Connection.     ';
            $this->conn = new PDO($dsn, $dbUsername, $dbPassword);

            echo 'Connected successfully.      ';
        } catch (PDOException $exception) {
            echo 'Connection failed: ' . $exception->getMessage();
        }
        return $this->conn;
    }
}


$co = new DBConnect();
$co->connect();
?>

我正在运行的容器

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                              NAMES
9639160c0824        8f704f51962d        "httpd-foreground"       2 hours ago         Up 2 hours          0.0.0.0:8080->80/tcp                               apache
38e630a9cb01        7bb7d4985301        "docker-entrypoint.s…"   2 hours ago         Up 2 hours          0.0.0.0:3306->3306/tcp, 0.0.0.0:33060->33060/tcp   mysql
c7f6e8db26a9        1cc049496b03        "docker-php-entrypoi…"   2 hours ago         Up 2 hours          0.0.0.0:9000->9000/tcp                             php

Answer 1

使用容器的名称将 host 添加到 DSN，因为它们在同一网络中:

private $dsn = "mysql:host=mysql;dbname=demo;port=3306;";

Reference