第3次系统综合实践
完成Docker-compose的安装
dockerfile的编写
按照LNMP编写
编写deault.conf配置文件
1.nginx
FROM nginx
MAINTAINER by zyj(278476914@qq.com)
EXPOSE 1106
2.php
FROM php:7.4-fpm
MAINTAINER by zyj(278476914@qq.com)
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
3.mysql
FROM mysql
作者信息
MAINTAINER by zyj(278476914@qq.com)
设置root密码
ENV MYSQL_ROOT_PASSWORD 123456
设置不可免密登录
ENV MYSQL_ALLOW_EMPTY_PASSWORD no
4.phpmyadmin
FROM phpmyadmin/phpmyadmin
MAINTAINER by zyj(278476914@qq.com)
EXPOSE 8080
docker-compose的编写
version: "3"
services:
nginx:
image: mynginx_image #指定镜像名
container_name: mynginx #指定容器名
build:
context: .
dockerfile: dockerfile_nginx #指定dockerfile文件
ports:
- "80:1106" #修改端口映射
volumes:
- ./web:/web/html #挂载容器卷，本地/容器内修改文件后，另一方都会同步更新；
- ./default.conf:/etc/nginx/conf.d/default.conf #挂载配置文件
php:
image: myphp_image
container_name: myphp
build:
context: .
dockerfile: dockerfile_php
environment:
MYSQL_PASSWORD: 123456 #设置好环境变量，在php代码中使用变量名直接引用
volumes:
- ./web:/web/php #挂载工作目录到本机web目录
mysql:
image: mysql_image
container_name: mysql
build:
context: .
dockerfile: dockerfile_mysql
ports:
- "3306:3306"
volumes:
- ./mysql_data:/var/lib/mysql #挂载容器卷，实现数据同步，防止数据丢失
phpmyadmin:
image: myphpmyadmin_image
container_name: myphpmyadmin
build:
context: .
dockerfile: dockerfile_phpmyadmin
ports:
- "8080:80" # phpmyadmin默认监听80
environment:
PMA_HOST: mysql #指定mysql服务所在的host
查看docker-compose文件夹的树状结构
执行docker-compose文件
sudo docker-compose up -d --build
查看镜像和容器
访问localhost/index.html和localhost/index.php
服务测试
1.测试php能不能连接mysql数据库
修改index.php文件
<?php
$servername = "mysql"; #注意这里要用自己自定义的Mysql的容器名
$username = "root";
$password = "123456"; #密码也可以直接使用yml中的变量名
try {
$conn = new PDO("mysql:host=$servername", $username, $password);
echo "连接成功";
}
catch(PDOException $e)
{
echo $e->getMessage();
}
2.在index.php文件中创建数据库
<?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 myDBPDO";
// 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;
?>
3.进去mysql容器查询数据库可以发现已经创建了 myDBPDO数据库
4.在myDBPDO数据库中创建Student表
可以发现已经创建的student表
5.向student表中插入数据
<?php
$servername = "mysql";
$username = "root";
$password = "123456";
$dbname="myDBPDO";
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 Student (id,name)
VALUES (031702336, 'Ljw')");
$conn->exec("INSERT INTO Student (id,name)
VALUES (031702340, 'Zyj')");
$conn->exec("INSERT INTO Student (id,name)
VALUES (031702341, 'Hbh')");
// 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.删除与修改数据
<?php
$servername = "mysql";
$username = "root";
$password = "123456";
$dbname="myDBPDO";
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 UPDATE 语句
$conn->exec("UPDATE Student SET name='fzl' WHERE id=031702336");
//SQL DELETE语句
$conn->exec("DELETE FROM Student where id=031702341");
// 提交事务
$conn->commit();
echo "修改，删除成功";
}
catch(PDOException $e)
{
// 如果执行失败回滚
$conn->rollback();
echo $sql . "<br>" . $e->getMessage();
}
$conn = null;
?>
遇到的问题
网络连接用问题，从用手机直连共享网络换成家里常用的wifi就解决了
