Docker-compose api和数据库配置

问题描述 投票:0回答:1

我将Api与在容器中运行的MySQL数据库连接时遇到问题。我有用于Golang Api的Dockerfile:

FROM golang:latest
 WORKDIR /app
 COPY go.mod go.sum ./
RUN go mod download
 COPY . .
WORKDIR /app/bin
 EXPOSE 8080
 RUN go run ./../cmd/web/

我通常使用数据库/ sql连接应用程序中的数据库:

dsn = "user1:pass@tcp(wpmysql:3306)/wp?parseTime=true"
db, err := sql.Open("mysql", dsn)

我的docker-compose.yml:

version: '3'
services:
  db:
    image: mysql:5.7
    container_name: ${MYSQL_CONTAINER_NAME}
    ports: 
        - 3306:3306
    command: --init-file /usr/src/app/init.sql
    volumes:
        - ./init.sql:/usr/src/app/init.sql
    environment:
        - MYSQL_USER=${MYSQL_USER}
        - MYSQL_PASSWORD=${MYSQL_PASS}
        - MYSQL_DATABASE=${MYSQL_DB}
        - MYSQL_ROOT_PASSWORD=${DB_PASSWORD}
    networks:
        - fullstack
  web:
    container_name: wpapi
    build: .
    ports:
        - 8080:8080
    restart: on-failure
    volumes:
        - .:/usr/src/app/
    depends_on:
        - db
    networks:
        - fullstack

networks:
    fullstack:
        driver: bridge

与docker-compose.yml在同一目录中是文件.env:

DB_PASSWORD=pass
MYSQL_PORT=3306
MYSQL_USER=user1
MYSQL_PASS=pass
MYSQL_DB=wp
MYSQL_CONTAINER_NAME=wpmysql

通话后称赞:

$ docker-compose up -d db
$ docker-compose build web

我收到错误ERROR main.go:46: dial tcp: lookup wpmysql on 37.8.214.2:53: no such host。容器列表如下所示:

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                               NAMES
9fbaf67df5bf        2778fcda2046        "/bin/sh -c 'go run …"   14 seconds ago      Up 13 seconds       8080/tcp                            mystifying_shannon
7f6c76cc9c4f        mysql:5.7           "docker-entrypoint.s…"   40 minutes ago      Up About a minute   0.0.0.0:3306->3306/tcp, 33060/tcp   wpmysql

此外,当我尝试通过dsn = "user1:pass@tcp(localhost:3306)/wp?parseTime=true"dsn = "root:pass@tcp(localhost:3306)/wp?parseTime=true"连接应用程序时,出现另一个错误:dial tcp 127.0.0.1:3306: connect: connection refused尽管我可以使用docker exec -it wpmysql bash -lsign in凭据进入容器(root)和user1]

我将Api与在容器中运行的MySQL数据库连接时遇到问题。我有用于Golang Api的Dockerfile:FROM golang:latest WORKDIR / app COPY go.mod go.sum ./ RUN go mod下载COPY。 。 ...

mysql docker go docker-compose docker-networking
1个回答
0
投票

我收到错误ERROR main.go:46:拨打tcp:在上查找wpmysql37.8.214.2:53:没有这样的主机。容器列表如下所示:

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