Docker php_network_getaddresses 错误
我正在运行以下由 PHPDocker 生成的 Docker 容器:
I have following Docker containers running that were generated by PHPDocker:
learn-php-mysql:
image: mysql:5.7
container_name: learn-php-mysql
volumes:
- "./.data/db:/var/lib/mysql"
restart: always
environment:
MYSQL_ROOT_PASSWORD: learning
MYSQL_DATABASE: learning
MYSQL_USER: learning
MYSQL_PASSWORD: learning
learn-php-webserver:
image: phpdockerio/nginx:latest
container_name: learn-php-webserver
volumes:
- ./code:/code
- ./nginx/nginx.conf:/etc/nginx/conf.d/default.conf
ports:
- "8080:80"
links:
- learn-php-php-fpm
learn-php-php-fpm:
build: .
dockerfile: php-fpm/Dockerfile
container_name: learn-php-php-fpm
volumes:
- ./code:/code
- ./php-fpm/php-ini-overrides.ini:/etc/php/7.1/fpm/conf.d/99-overrides.ini
links:
- learn-php-mysql:mysql
一切正常,除了尝试通过 PHP 代码连接到 MySQL 服务器时:
Everything works fine, except for when trying to connect to MySQL server via PHP code:
$mysqli = new mysqli("db", "learning", "learning", "learning");
/* check connection */
if ($mysqli->connect_errno) {
printf("Connect failed: %s
", $mysqli->connect_error);
exit();
}
它会抛出以下错误:
连接失败:php_network_getaddresses:getaddrinfo 失败:名称或服务未知
Connect failed: php_network_getaddresses: getaddrinfo failed: Name or service not known
为什么会这样?
.
.
您可以在此处找到此存储库.当运行 docker-compose up
时,转到 http://localhost:8080/classes/serialize.php 产生同样的错误.
You can find repository for this here. And when running docker-compose up
go to http://localhost:8080/classes/serialize.php to produce same error.
推荐答案
通过 PHP(或任何其他)连接时,使用容器的名称作为主机,如果是 learn-php-mysql.
When making connection via PHP (or any other), use the container's name as host, which in case is learn-php-mysql.
因此
$mysqli = new mysqli("learn-php-mysql", "learning", "learning", "learning");
会起作用的.
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