Failed to connect to node [{}{}{localhost}{127.0.0.1:9300}], removed from nodes list

Elastic Stack Elasticsearch
1 
geoportal_1      | 2020-04-05 06:46:38,400 INFO [org.elasticsearch.client.transport.TransportClientNodesService] - failed to connect to node [{#transport#-1}{DTai1v8zS96dztCUpGku4w}{localhost}{127.0.0.1:9300}], removed from nodes list
geoportal_1      | org.elasticsearch.transport.ConnectTransportException: [][127.0.0.1:9300] connect_timeout[30s]
geoportal_1      |      at org.elasticsearch.transport.netty4.Netty4Transport.connectToChannelsLight(Netty4Transport.java:340) ~[transport-netty4-client-5.1.1.jar:5.1.1]
geoportal_1      |      at org.elasticsearch.transport.TcpTransport.connectToNode(TcpTransport.java:410) ~[elasticsearch-5.1.1.jar:5.1.1]
geoportal_1      |      at org.elasticsearch.transport.TcpTransport.connectToNodeLight(TcpTransport.java:382) ~[elasticsearch-5.1.1.jar:5.1.1]
geoportal_1      |      at org.elasticsearch.transport.TransportService.connectToNodeLight(TransportService.java:303) ~[elasticsearch-5.1.1.jar:5.1.1]
geoportal_1      |      at org.elasticsearch.client.transport.TransportClientNodesService$SimpleNodeSampler.doSample(TransportClientNodesService.java:392) [elasticsearch-5.1.1.jar:5.1.1]
geoportal_1      |      at org.elasticsearch.client.transport.TransportClientNodesService$NodeSampler.sample(TransportClientNodesService.java:338) [elasticsearch-5.1.1.jar:5.1.1]
geoportal_1      |      at org.elasticsearch.client.transport.TransportClientNodesService$ScheduledNodeSampler.run(TransportClientNodesService.java:371) [elasticsearch-5.1.1.jar:5.1.1]
geoportal_1      |      at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:458) [elasticsearch-5.1.1.jar:5.1.1]
geoportal_1      |      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_242]
geoportal_1      |      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_242]
geoportal_1      |      at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
geoportal_1      | Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: localhost/127.0.0.1:9300
geoportal_1      |      at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) ~[?:1.8.0_242]
geoportal_1      |      at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:714) ~[?:1.8.0_242]
geoportal_1      |      at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:346) ~[netty-transport-4.1.6.Final.jar:4.1.6.Final]
geoportal_1      |      at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340) ~[netty-transport-4.1.6.Final.jar:4.1.6.Final]
geoportal_1      |      at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:639) ~[netty-transport-4.1.6.Final.jar:4.1.6.Final]
geoportal_1      |      at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:574) ~[netty-transport-4.1.6.Final.jar:4.1.6.Final]
geoportal_1      |      at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:488) ~[netty-transport-4.1.6.Final.jar:4.1.6.Final]
geoportal_1      |      at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:450) ~[netty-transport-4.1.6.Final.jar:4.1.6.Final]
geoportal_1      |      at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:873) ~[netty-common-4.1.6.Final.jar:4.1.6.Final]
geoportal_1      |      ... 1 more
2

I'm running elasticsearch in docker desktop(container) and try to connect with web application. Above log showing under web application logs. Below is my docker compose file.

version: '3.6'
services:
  geoportal:
      build: geoportal
      ports: 
        - "8080:8080"
      hostname: geoportal
      environment:
        - es_cluster=elasticsearch
        - es_node=elasticsearch
      # volumes:
      #   - "./local/harvester:/root"
      links: 
        - elasticsearch:elasticsearch
      networks:
        - default
  elasticsearch:
    image: elasticsearch:5.6
    container_name: elasticsearch
    hostname: elasticsearch
    ports:
      - "9200:9200"
      - "9300:9300"
    volumes:
      - esdata1:/usr/share/elasticsearch/data
    environment:
      - "ES_JAVA_OPTS=-Xms750m -Xmx750m"
      - bootstrap.memory_lock=true
      - discovery.type=single-node
      - cluster.name=elasticsearch
      # - network.host=127.0.0.1
      # - transport.host=0.0.0.0
      - xpack.security.enabled=false
    ulimits:
      memlock:
        soft: -1
        hard: -1
    networks:
      - default

networks:
  default:
    external:
      name: geoportal
volumes:
  esdata1:
    driver: local
3

Welcome!

Not sure what the problem is here. But anyway, do not use the TransportClient. It will be removed in the next major version. Just use the REST Client.

4

Sure, Thanks for your comments. But I don't have any control to change TransportClient. Also I've tried many methods to make a connection and found Elasticsearch is not connected to the private or generated network in Docker. If I ran the same out of Docker working fine.

5

Does it mean that you are not writing the Java code?

6

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