Nestcloud 与 docker-compose consul 微服务连接被拒绝

Posted 2023-03-10

【中文标题】Nestcloud 与 docker-compose consul 微服务连接被拒绝

【英文标题】：Nestcloud with docker-compose consul micro-service connection refused

【发布时间】：2022-01-02 09:32:16

【问题描述】：

我已经用 consul 和一堆微服务对一个 Nestcloud 应用程序进行了 dockerize。 但是，我无法启动任何微服务（例如下面的 test-service，因为 consul 似乎拒绝任何 tcp 连接：

[Nest] 1   - 11/23/2021, 9:47:34 PM   [NestFactory] Starting Nest application... 
[Nest] 1   - 11/23/2021, 9:50:56 PM   [ConfigModule] Unable to initial ConfigModule, retrying...
[Nest] 1   - 11/23/2021, 9:47:34 PM   [InstanceLoader] ServiceRegistryModule dependencies initialized +114ms
[Nest] 1   - 11/23/2021, 9:47:34 PM   [InstanceLoader] LoggerModule dependencies initialized +0ms
[Nest] 1   - 11/23/2021, 9:47:34 PM   [InstanceLoader] BootModule dependencies initialized +0ms
[Nest] 1   - 11/23/2021, 9:47:34 PM   [InstanceLoader] HttpModule dependencies initialized +6ms
[Nest] 1   - 11/23/2021, 9:47:34 PM   [InstanceLoader] AppModule dependencies initialized +2ms
[Nest] 1   - 11/23/2021, 9:47:34 PM   [InstanceLoader] ConsulModule dependencies initialized +0ms
[Nest] 1   - 11/23/2021, 9:47:34 PM   [ConfigModule] Unable to initial ConfigModule, retrying... +39ms
Error: consul: kv.get: connect ECONNREFUSED 127.0.0.1:8500

这是我的 docker-compose.yaml ：

version: "3.2"

services:
  test-service:
    build:
      context: .
      dockerfile: apps/test-service/Dockerfile
      args:
        NODE_ENV: development
    image: "test-service:latest"
    restart: always
    depends_on:
      - consul
    environment:
      - CONSUL_HOST=consul
      - DISCOVERY_HOST=localhost
    ports:
      - 50054:50054

  consul:
    container_name: consul
    ports:
      - "8400:8400"
      - "8500:8500"
      - "8600:53/udp"
    image: consul
    command: ["agent", "-server", "-bootstrap", "-ui", "-client", "0.0.0.0"]
    labels:
      kompose.service.type: nodeport
      kompose.service.expose: "true"
      kompose.image-pull-policy: "Always"

我的微服务测试服务的 Dockerfile：

FROM node:12-alpine
ARG NODE_ENV=production
ENV NODE_ENV $NODE_ENV

RUN mkdir -p /usr/src/app
ADD . /usr/src/app

WORKDIR /usr/src/app

RUN yarn global add @nestjs/cli

RUN yarn install --production=false

# Build production files
RUN nest build test-service

# Bundle app source
COPY . .

EXPOSE 50054
CMD ["node", "dist/apps/test-service/main.js"]

以及nestcloud用来启动微服务的bootstrap-development.yaml

consul:
  host: localhost
  port: 8500
config:
  key: mybackend/config/$ service.name 
service:
  discoveryHost: localhost
  healthCheck:
    timeout: 1s
    interval: 10s
    tcp: $ service.discoveryHost :$ service.port 
  maxRetry: 5
  retryInterval: 5000
  tags: ["v1.0.0", "microservice"]
  name: io.mybackend.test.service
  port: 50054
loadbalance:
  ruleCls: RandomRule
logger:
  level: info
  transports:
    - transport: console
      level: debug
      colorize: true
      datePattern: YYYY-MM-DD h:mm:ss
      label: $ service.name 
    - transport: file
      name: info
      filename: info.log
      datePattern: YYYY-MM-DD h:mm:ss
      label: $ service.name 
      # 100M
      maxSize: 104857600
      json: false
      maxFiles: 10
    - transport: dailyRotateFile
      filename: info.log
      datePattern: YYYY-MM-DD-HH
      zippedArchive: true
      maxSize: 20m
      maxFiles: 14d

我可以成功地从微服务容器ping consul容器：

docker exec -ti test-service ping consul

你觉得我的配置有什么问题吗？如果有，请告诉我如何让它工作？

【参考方案1】：

你试图从 NestJs 服务中使用 localhost 访问 consul，这是另一个容器，它的 localhost 与 consul localhost 不同，你需要使用容器名称作为主机访问 consule

将bootstrap-development.yaml中的consul主机改为$ CONSUL_HOST 。

CONSUL_HOST 定义在docker-compose.yaml: CONSUL_HOST=consul

新bootstrap-development.yaml:

consul:
  host: $CONSUL_HOST
  port: 8500
...

并使用以下命令重建容器：docker-compose --project-directory=. -f docker-compose.dev.yml up --build

【讨论】：

是的，看起来像。谢谢！

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