python - Errno 111:使用Python脚本连接到Elasticsearch时，连接被拒绝

Question

我遇到了一个 jetty 化的Elasticsearch集群问题，我想使用一个简单的python索引脚本进行连接。
在执行docker-compose之后，它也会启动集群，以及kibana，但是当它尝试通过python脚本连接到ES时，出现以下错误:

elasticsearch.exceptions.ConnectionError: ConnectionError(<urllib3.connection.HTTPConnection object at 0x7f1c04e0c0d0>: Failed to establish a new connection: [Errno 111] Connection refused) caused by: NewConnectionError(<urllib3.connection.HTTPConnection object at 0x7f1c04e0c0d0>: Failed to establish a new connection: [Errno 111] Connection refused)

我可以通过浏览器访问ES，如果我在pycharm中执行脚本，也可以定期编制索引。因此，它与docker有关，但是我找不到问题的根源。
这是我的dockerfile:

    version: '3.4'
services:
  es01:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.8.1
    container_name: es01
    environment:
      #- discovery.type=single-node needed?
      - node.name=es01
      - cluster.name=es-docker-cluster
      - discovery.seed_hosts=es02,es03
      - cluster.initial_master_nodes=es01,es02,es03
      - bootstrap.memory_lock=true
      - xpack.security.enabled=false
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - data01:/usr/share/elasticsearch/data
    ports:
      - 9200:9200
    networks:
      - elastic

  es02:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.8.1
    container_name: es02
    environment:
      - node.name=es02
      - cluster.name=es-docker-cluster
      - discovery.seed_hosts=es01,es03
      - cluster.initial_master_nodes=es01,es02,es03
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - data02:/usr/share/elasticsearch/data
    networks:
      - elastic

  es03:
    image: docker.elastic.co/elasticsearch/elasticsearch:7.8.1
    container_name: es03
    environment:
      - node.name=es03
      - cluster.name=es-docker-cluster
      - discovery.seed_hosts=es01,es02
      - cluster.initial_master_nodes=es01,es02,es03
      - bootstrap.memory_lock=true
      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
    ulimits:
      memlock:
        soft: -1
        hard: -1
    volumes:
      - data03:/usr/share/elasticsearch/data
    networks:
      - elastic

  kib01:
    image: docker.elastic.co/kibana/kibana:7.8.1
    container_name: kib01
    depends_on:
      - es01
      - es02
      - es03
    ports:
      - 5601:5601
    environment:
      ELASTICSEARCH_URL: http://es01:9200
      ELASTICSEARCH_HOSTS: http://es01:9200
    networks:
      - elastic

  web:
    build: .
    ports:
      - 8000:8000
    depends_on:
      - es01
      - es02
      - es03
    networks:
      - elastic


volumes:
  data01:
    driver: local
  data02:
    driver: local
  data03:
    driver: local

networks:
  elastic:
    driver: bridge

和python脚本:

from elasticsearch import Elasticsearch, helpers
import sys, json, os
import requests

es = Elasticsearch([{'host': '127.0.0.1', 'port': 9200}])

def load_json(directory):
    " Use a generator, no need to load all in memory"
    for filename in os.listdir(directory):
        if filename.endswith('.json'):
            filename = "JSON/" + filename
            with open(filename,'r') as open_file:
                yield json.load(open_file)

if __name__ == '__main__':
    helpers.bulk(es, load_json("JSON"), index='urteile')

从容器外部对本地主机进行 curl ，从容器内部不进行，并给出以下错误:
docker 文件中的curl命令还给了我一个被拒绝的连接。这是我得到的错误:

mapping_1  | * TCP_NODELAY set
mapping_1  | * connect to 127.0.0.1 port 9200 failed: Connection refused
mapping_1  | *   Trying ::1...
mapping_1  | * TCP_NODELAY set
mapping_1  | * Immediate connect fail for ::1: Address not available
mapping_1  | *   Trying ::1...
mapping_1  | * TCP_NODELAY set
mapping_1  | * Immediate connect fail for ::1: Address not available
mapping_1  | * Failed to connect to localhost port 9200: Connection refused
mapping_1  | * Closing connection 0
mapping_1  | curl: (7) Failed to connect to localhost port 9200: Connection refused

有人知道这可能是什么问题吗？
编辑:
好的，这样使用es01而不是localhost的注释会有所帮助，因为当插入“客户端”服务时，它将成功ping Elasticsearch。仍然-python应用程序告诉我连接被拒绝...

Answer 1

您正在使用本地主机作为python代码中的ES群集地址。 ES在单独的容器上运行，因此您需要使用那些主机名。您可以使用docker compose yaml文件中声明的服务名称(es01，es02等)代替127.0.0.1