要在Docker中搭建Hadoop集群,可以使用Hadoop官方提供的Docker鏡像和Docker Compose來快速搭建集群。以下是搭建Hadoop集群的簡單步驟:
docker pull sequenceiq/hadoop-docker:2.7.1
docker-compose.yml
的文件,并粘貼以下內(nèi)容:version: '2'
services:
namenode:
image: sequenceiq/hadoop-docker:2.7.1
container_name: namenode
expose:
- "50070"
ports:
- "50070:50070"
environment:
- CLUSTER_NAME=test
volumes:
- /data/hdfs/namenode:/hadoop/dfs/namenode
datanode:
image: sequenceiq/hadoop-docker:2.7.1
container_name: datanode
expose:
- "50075"
ports:
- "50075:50075"
environment:
- SERVICE_PRECONDITION="namenode"
- CLUSTER_NAME=test
volumes:
- /data/hdfs/datanode:/hadoop/dfs/datanode
docker-compose.yml
文件的目錄下,運行以下命令來啟動Hadoop集群容器:docker-compose up -d
http://localhost:50070
,即可訪問Hadoop的Web界面。通過以上步驟,您可以在Docker中快速搭建一個簡單的Hadoop集群。您還可以根據(jù)自己的需求配置更多的節(jié)點和服務。