如何从容器(API)连接到容器(elasticsearch)? [英] How can I connect from container(API) to container(elasticsearch)?

问题描述

我有2个容器，其中一个是Web API，另一个是elasticsearch.当我在本地计算机(没有容器)中打开API并我可以为docker容器中的Elasticsearch编制索引.我可以为数据建立索引以对Elasticsearch的runnig good和连接URL进行索引，例如 http://localhost:9200 没问题.

I have 2 container.One of them is web API and other is elasticsearch. When I up API in local machine(without container) and up elasticsearch in docker container.I can index data to elasticsearch its runnig good and connection url to elasticsearch such http://localhost:9200 there is no problem.

但是当我想使用docker容器和用docker容器的elasticsearch来建立API时，存在一些问题，我无法使用相同的连接URL将数据索引到elasticsearch，例如

But When I want to up API with docker container and elasticsearch with docker container there is some problem I cant index data to elasticsearch with same connection url such http://localhost:9200

所以我认为问题出在连接网址，但是我不确定.我的docker如下所示.

so I think problem is about connection url, But I m not sure .My docker compose like below.

version: '3'
services:
    web:
      build: .
      ports:
       - "8080:80"
      network : 
        - host
      container_name : DataCollectorAPI
    elasticsearch:
        image: docker.elastic.co/elasticsearch/elasticsearch:7.1.0
        ports:
          - "9200:9200"
          - "9300:9300"
        environment:
          - discovery.type=single-node

推荐答案

您应该像这样链接容器

web:
    ....
    links:
     - elasticsearch
    depends_on:
     - elasticsearch

然后从您的Web容器中使用 elasticsearch 作为主机名.

Then from your web container use elasticsearch as a hostname.

有关详细信息，请参见 docker-compose.yml 文档.

See the docker-compose.yml documentation for details.

您也可以直接使用其他容器名称作为主机名

Also you can just directly use the other container name as hostname

不需要链接即可使服务进行通信-默认情况下，任何服务都可以使用该服务的名称访问任何其他服务.

Links are not required to enable services to communicate - by default, any service can reach any other service at that service’s name.

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