docker compose:无法从我的LEMP堆栈访问phpMyAdmin

Question

我刚刚创建了一个LEMP堆栈(Linux、Nginx、MariaDB、PHP-FPM(，由docker和docker组成。但不知怎么的，我无法通过phpMyAdmin访问我的数据库。

当我试图访问phpMyAdmin web服务器时，我得到了以下错误：

MySQL说：文档

无法连接：设置无效。

数据包出现故障。预期0收到1。数据包大小=69

mysqli_real_connect((：读取问候信息包时出错。PID=18

mysqli_real_connect((：(HY000/2006(：MySQL服务器已经离开

phpMyAdmin试图连接到MySQL服务器，但服务器拒绝了连接。您应该检查配置中的主机、用户名和密码，并确保它们与MySQL服务器管理员提供的信息相对应。

其余部分工作正常。

这是我的docker-compose.yml文件：

version: "3.3"
services:
nougat:  #Nginx Server
image: tutum/nginx:latest
ports:
- "8080:80"
links:
- papaya  # PHP-FPM service
volumes:
- type: bind
source: ./nginx
target: /etc/nginx/sites-available
- type: bind
source: ./nginx
target: /etc/nginx/sites-enabled
- type: bind
source: ./logs/nginx-error.log
target: /var/log/nginx/error.log
- type: bind
source: ./logs/nginx-access.log
target: /var/log/nginx/access.log
papaya:  # PHP-FPM service
build: .
volumes:
- type: bind
source: ./public
target: /usr/share/nginx/html
mango:  # MariaDB database
image: mariadb:10.5.1
volumes:
- type: bind
source: ./mango_database
target: /var/lib/mysql
environment:
MYSQL_ROOT_PASSWORD: admin
pomegranate:  # phpMyAdmin web-service
image: phpmyadmin/phpmyadmin:4.9.4
restart: always
links:
- mango:mysql  # MySQL database
ports:
- "8081:80"
environment:
PMA_HOST: mysql
PMA_USER: root
PMA_PASSWORD: admin
PMA_ARBITRARY: 1

这是我的Dockerfile:

FROM php:7.4.3-fpm
RUN docker-php-ext-install pdo pdo_mysql
RUN apt-get update -y && apt-get install -y libwebp-dev libjpeg62-turbo-dev libpng-dev libxpm-dev 
libfreetype6-dev
RUN apt-get update && 
apt-get install -y 
zlib1g-dev 
RUN apt-get install -y libzip-dev
RUN docker-php-ext-install zip
RUN docker-php-ext-install gd

提前感谢您的帮助。

Answer 1

使用networks将所有服务连接在一起

docker-compose.yml

version: "3.3"
services:
nougat:  #Nginx Server
image: tutum/nginx:latest
ports:
- "8080:80"
networks:         # <-- Add this line
- random_name # <-- Add this line
# links:          # <-- Remove this
#     - papaya    # <-- Remove this
volumes:
- type: bind
source: ./nginx
target: /etc/nginx/sites-available
- type: bind
source: ./nginx
target: /etc/nginx/sites-enabled
- type: bind
source: ./logs/nginx-error.log
target: /var/log/nginx/error.log
- type: bind
source: ./logs/nginx-access.log
target: /var/log/nginx/access.log
papaya:  # PHP-FPM service
build: .
networks:         # <-- Add this line
- random_name # <-- Add this line
volumes:
- type: bind
source: ./public
target: /usr/share/nginx/html
mango:  # MariaDB database
image: mariadb:10.5.1
networks:         # <-- Add this line
- random_name # <-- Add this line
volumes:
- type: bind
source: ./mango_database
target: /var/lib/mysql
environment:
MYSQL_ROOT_PASSWORD: admin
pomegranate:  # phpMyAdmin web-service
image: phpmyadmin/phpmyadmin:4.9.4
restart: always
# links:            # <-- Remove this
#     - mango:mysql # <-- Remove this
ports:
- "8081:80"
networks:         # <-- Add this line
- random_name # <-- Add this line
environment:
PMA_HOST: mysql
PMA_USER: root
PMA_PASSWORD: admin
PMA_ARBITRARY: 1
networks:         # <-- Add this line
random-name:  # <-- Add this line