我有一个docker-compose.yml
文件,我想创建三个容器来运行我的节点应用程序:客户端,服务器,带有某些数据的数据库容器。
我在创建db容器并将其连接到服务器容器时遇到麻烦,我正在使用sequelize与db连接,但是在docker-compose up
命令中,服务器应用程序启动时出现连接错误:
server_1 |无法连接到SQL数据库:webgrit_superactivation {SequelizeConnectionRefusedError:连接ECONNREFUSED 127.0.0.1:3306
这是我的docker-compose
文件:
version: "3"
services:
# client
client:
image: "ngapp"
build: "client/dist/."
ports:
- "4200:80"
# Server
server:
image: "exapp"
build: "server/."
ports:
- "3000:3000"
links:
- db
# MySQL
db:
image: mysql:5.7
command: mysqld --user=root
volumes:
- ./mysql-dump:/docker-entrypoint-initdb.d
environment:
MYSQL_ROOT_PASSWORD: root
MYSQL_USER: myuser
MYSQL_PASSWORD: mypass
MYSQL_DATABASE: mydbname
在mysql映像中,我使用data.sql
转储文件来初始化数据库,但是出了点问题
这是我用于连接mysql db的服务器容器dbconfig.js
文件:
CONFIG.db_name = process.env.DB_NAME_DEV || "mydbname";
CONFIG.db_user = process.env.DB_USER_DEV || "myuser";
CONFIG.db_password = process.env.DB_PASSWORD_DEV || "mypass";
CONFIG.db_dialect = process.env.DB_DIALECT_DEV || "mysql";
CONFIG.db_host = process.env.DB_HOST_DEV || "localhost";
CONFIG.db_port = process.env.DB_PORT_DEV || "3306";
这是我的data.sql
转储文件的开始:
SET SQL_MODE = "NO_AUTO_VALUE_ON_ZERO";
SET AUTOCOMMIT = 0;
START TRANSACTION;
SET time_zone = "+00:00";
CREATE DATABASE IF NOT EXISTS `mydbname` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
USE `mydbname`;
CREATE TABLE `users` (
...
编辑:在这里您可以找到错误日志:https://github.com/ufollettu/SEANSA/blob/master/docker%20error%20log.log
我是Docker的新手,如何解决此问题? 谢谢你的帮助
答案 0 :(得分:1)
将主机更改为数据库服务名称,即db
-
CONFIG.db_host = process.env.DB_HOST_DEV || "db";