[英]Warning: mysqli::__construct(): (HY000/2002): Connection refused in
[英]Warning: mysqli::__construct(): (HY000/2002): Connection refused
他們是docker的新手。獲取phpmyadmin、php,家庭助理工作。 但是我無法很好地配置 docker 以能夠從 php 連接到數據庫。 能幫我看看是什么問題嗎。
我嘗試了一切。 我讀了很多有同樣錯誤的帖子,但無法讓它工作。
非常感謝你
這是我修改的 docker-compose
version: '3.4'
services:
web:
build:
context: ./php
dockerfile: Dockerfile
container_name: php73
depends_on:
- db
volumes:
- ./php:/var/www/html/
environment:
MYSQL_HOST: mysql8
MYSQL_USER: pf
MYSQL_PASSWWORD: 123456
MYSQL_DB: ha
ports:
- 3001:80
db:
container_name: mysql8
image: mysql:8.0
command: --default-authentication-plugin=mysql_native_password
restart: always
environment:
MYSQL_ROOT_PASSWORD: 123456
MYSQL_USER: pf
MYSQL_PASSWWORD: 123456
MYSQL_DATABASE: ha
volumes:
- /var/lib/mysql
ports:
- 6033:3306
phpmyadmin:
image: phpmyadmin/phpmyadmin
container_name: phpmyadmin
depends_on:
- db
restart: always
ports:
- 8080:80
environment:
PMA_ARBITRARY: 1
PMA_HOST: db
PMA_PORT: 3306
MYSQL_USER: pf
MYSQL_PASSWWORD: 123456
MYSQL_ROOT_PASSWORD: 123456
volumes:
- /sessions
新的 php 示例
<?php
$host = 'db';
$user = 'pf';
$password = '123456';
$db = 'ha';
$conn = new mysqli($host,$user,$password,$db,3306);
if($conn->connect_error) {
echo 'connection failed' . $conn->connect_error;
}
echo 'Sucessfully connected msql';
?>
Dockerfile
FROM php:7.3.3-apache
RUN apt-get update && apt-get upgrade -y
RUN docker-php-ext-install mysqli
EXPOSE 80
我的 docker-compose
version: '3.3'
services:
web:
build:
context: ./php
dockerfile: Dockerfile
container_name: php73
depends_on:
- db
volumes:
- ./php:/var/www/html/
ports:
- 80:80
db:
container_name: mysql8
image: mysql:8.0
command: --default-authentication-plugin=mysql_native_password
restart: always
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_DATABASE: mediciones
MYSQL_USER: root
MYSQL_PASSWWORD: root
ports:
- 6033:3306
phpmyadmin:
image: phpmyadmin/phpmyadmin
container_name: phpmyadmin
depends_on:
- db
restart: always
ports:
- 8080:80
environment:
PMA_ARBITRARY: 1
PMA_HOST: db
MYSQL_ROOT_PASSWORT: root
homeassistant:
container_name: homeassistant
restart: unless-stopped
image: homeassistant/home-assistant
devices:
- /dev/ttyUSB0:/dev/ttyUSB0
- /dev/ttyUSB1:/dev/ttyUSB1
- /dev/ttyACM0:/dev/ttyACM0
volumes:
- ${USERDIR}/docker/homeassistant:/config
- /etc/localtime:/etc/localtime:ro
- ${USERDIR}/docker/shared:/shared
- /dev/serial/by-id/:/dev/serial/by-id/
network_mode: host
privileged: true
我的 php 示例
<?php
$host = '127.0.0.1';
$user = 'root';
$password = 'root';
$db = 'ha';
$conn = new mysqli($host,$user,$password,$db);
if($conn->connect_error) {
echo 'connection failed' . $conn->connect_error;
}
echo 'Sucessfully connected msql';
?>
您在主機端口上公開mysql
: 6033
你試過了嗎:
$conn = new mysqli($host,$user,$password,$db,6033);
假設您的示例代碼在 php 容器中運行:
在這種情況下,使用db
作為主機名,使用mediciones
作為連接中的數據庫名稱。
對於數據庫容器:
MYSQL_USER
設置為非 root,因為這會導致潛在的錯誤。 該用戶已獲得MYSQL_DATABASE
的訪問權限。
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