docker swarm cluster can't connect datanode 9866 port

[lgy78614]

I have set up docker swarm cluster , use the following configuration file to deploy hdfs cluster on the overlay network named test in my swarm cluster . version: '3' services: namenode: image: bde2020/hadoop-namenode:2.0.0-hadoop3.1.2-java8 volumes:

• namenode:/hadoop/dfs/name environment:
• CLUSTER_NAME=test env_file:
• ./hadoop.env networks:
• hbase ports:

• 9870:9870 deploy: mode: replicated replicas: 1 restart_policy: condition: on-failure placement: constraints:

  • node.hostname == 10-20-28-111 labels: traefik.docker.network: hbase traefik.port: 9870

  datanode: image: bde2020/hadoop-datanode:2.0.0-hadoop3.1.2-java8 volumes:

• datanode:/hadoop/dfs/data env_file:
• ./hadoop.env networks:
• hbase environment: SERVICE_PRECONDITION: "namenode:9000" deploy: restart_policy: condition: on-failure labels: traefik.docker.network: hbase traefik.port: 9866 placement: constraints:
  • node.hostname == 10-20-28-111 volumes: datanode: namenode:

networks: hbase: external: name: test

I can see registed datanode from namenode web ui after successful deployment, but the datanode hostname and ip don't match.And i can't access datanode 9866 port through the datanode ip,but i can access it via datanode hostname. Can you tell me why and give me a hand?Thank you!

[ktpktr0]

The IP of the datanode in the HDFS dfsadmin -report does not match the container IP of the actual datanode?