node.js - Postgres 不接受使用 docker-compose 的其他容器的任何连接

Question

我正在尝试使用 docker-compose 将我的 nodejs 应用程序与 postgres 连接。

这是我的docker-compose.yml

version: "3.9"

services:
  db:
    container_name: db
    image: postgres
    restart: always
    environment:
      POSTGRES_USER: agoodusername
      POSTGRES_PASSWORD: astrongpassword
      POSTGRES_DB: dbname
    volumes:
      - ./pgdata:/var/lib/postgresql/data
    ports:
      - 5433:5432
    networks:
      - postgres

  pgadmin:
    container_name: pgadmin4
    platform: linux/amd64
    image: dpage/pgadmin4
    restart: always
    depends_on:
      - db
    environment:
      PGADMIN_DEFAULT_EMAIL: <a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="4322272e2a2d0322272e2a2d6d202c2e" rel="noreferrer noopener nofollow">[email protected]</a>
      PGADMIN_DEFAULT_PASSWORD: root
    ports:
      - 5050:80
    networks:
      - postgres

  be:
    container_name: be
    depends_on:
      - db
    build:
      context: .
      dockerfile: ./Dockerfile
    ports:
      - 3333:3333
    networks:
      - postgres

networks:
  postgres:
    driver: bridge

(请注意，我尝试过使用和不使用网络)

我的index.ts:

import { Entity, Column, PrimaryGeneratedColumn, createConnection } from "typeorm";
import express from 'express';

@Entity()
class Photo {
    @PrimaryGeneratedColumn()
    id?: number;
    @Column()
    name?: string;
    @Column()
    description?: string;
    @Column()
    filename?: string;
    @Column()
    views?: number;
    @Column()
    isPublished?: boolean;
}

const createCon = async () => {
    let retries = 5;
    while(retries) {
        try {
            const connection = await createConnection({
                type: 'postgres',
                url: 'postgres://agoodusername:astrongpassword@db:5433/dbname',
                synchronize: false,
                entities: [Photo]
            });
            console.log(connection.isConnected);
            break;
        }
        catch(e) {
            console.log(e);
            retries -= 1;
            await new Promise(res => setTimeout(res, 5000));
        }
    }
}

const app = express();

app.listen(3333, '0.0.0.0', () => {
    createCon();
    console.log("Server is running at port 3333");
})

Dockerfile:

FROM node:12.18.1-alpine

WORKDIR /app

COPY . .

RUN yarn

CMD ["yarn", "start"]

EXPOSE 3333

我在自己的 docker 容器上运行 postgres，在另一个容器上运行 Node (没有 docker-compose)，一切正常。

此外，pgadmin 容器无法连接到 postgres 容器，我已经提供了正确的主机名(在本例中为 db)和正确的主机地址(通过运行 docker inform db | grep IPAddress 获取) >)

以下是来自 Nodejs 容器的日志:

yarn run v1.22.4

$ ts-node index.ts

Server is running at port 3333

Error: connect ECONNREFUSED 172.20.0.2:5433

at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1141:16) {

errno: 'ECONNREFUSED',

code: 'ECONNREFUSED',

syscall: 'connect',

address: '172.20.0.2',

port: 5433

}

如果您想要完整的项目检查 this repo

Answer 1

你使用的端口不正确，5433端口暴露在外面，所以它只在主机上打开，当使用docker ip时，你应该使用运行docker内部的端口，即5432