docker搭建Hadoop
时间: 2023-07-07 21:32:14 浏览: 187
要在Docker上搭建Hadoop集群,可以分为以下几个步骤:
1. 安装Docker和Docker Compose;
2. 创建一个Docker Compose文件,定义Hadoop集群的各个节点(namenode、datanode、resourcemanager、nodemanager、historyserver);
3. 在Docker Compose中配置Hadoop集群的网络;
4. 编写Hadoop集群的配置文件,并将其挂载到Docker容器中;
5. 启动Docker容器,部署Hadoop集群。
以下是一个示例的Docker Compose文件,用于部署一个包含一个namenode节点、一个datanode节点、一个resourcemanager节点、两个nodemanager节点和一个historyserver节点的Hadoop集群:
```
version: "3.7"
services:
namenode:
image: sequenceiq/hadoop-docker:2.7.0
container_name: namenode
hostname: namenode
ports:
- "50070:50070"
- "8088:8088"
volumes:
- ./hadoop-conf:/etc/hadoop
- ./hadoop-data/namenode:/hadoop/dfs/name
environment:
- CLUSTER_NAME=hadoop-cluster
command: /etc/bootstrap.sh -d -namenode
networks:
hadoop-net:
ipv4_address: 172.18.0.2
datanode:
image: sequenceiq/hadoop-docker:2.7.0
container_name: datanode
hostname: datanode
ports:
- "50075:50075"
volumes:
- ./hadoop-conf:/etc/hadoop
- ./hadoop-data/datanode:/hadoop/dfs/data
environment:
- CLUSTER_NAME=hadoop-cluster
command: /etc/bootstrap.sh -d -datanode
networks:
hadoop-net:
ipv4_address: 172.18.0.3
resourcemanager:
image: sequenceiq/hadoop-docker:2.7.0
container_name: resourcemanager
hostname: resourcemanager
ports:
- "8088:8088"
volumes:
- ./hadoop-conf:/etc/hadoop
environment:
- CLUSTER_NAME=hadoop-cluster
command: /etc/bootstrap.sh -d -resourcemanager
networks:
hadoop-net:
ipv4_address: 172.18.0.4
nodemanager1:
image: sequenceiq/hadoop-docker:2.7.0
container_name: nodemanager1
hostname: nodemanager1
volumes:
- ./hadoop-conf:/etc/hadoop
environment:
- CLUSTER_NAME=hadoop-cluster
command: /etc/bootstrap.sh -d -nodemanager
networks:
hadoop-net:
ipv4_address: 172.18.0.5
nodemanager2:
image: sequenceiq/hadoop-docker:2.7.0
container_name: nodemanager2
hostname: nodemanager2
volumes:
- ./hadoop-conf:/etc/hadoop
environment:
- CLUSTER_NAME=hadoop-cluster
command: /etc/bootstrap.sh -d -nodemanager
networks:
hadoop-net:
ipv4_address: 172.18.0.6
historyserver:
image: sequenceiq/hadoop-docker:2.7.0
container_name: historyserver
hostname: historyserver
ports:
- "19888:19888"
volumes:
- ./hadoop-conf:/etc/hadoop
environment:
- CLUSTER_NAME=hadoop-cluster
command: /etc/bootstrap.sh -d -historyserver
networks:
hadoop-net:
ipv4_address: 172.18.0.7
networks:
hadoop-net:
driver: bridge
ipam:
driver: default
config:
- subnet: 172.18.0.0/16
```
在上述文件中,定义了一个名为"hadoop-net"的网络,用于连接Hadoop集群中的各个节点。每个节点都有一个对应的Docker容器,其中包含了所需的Hadoop组件和配置文件,以及相关的环境变量和命令。
在启动Docker容器之前,需要先编写Hadoop集群的配置文件,并将其挂载到Docker容器中。例如,可以在本地创建一个名为"hadoop-conf"的文件夹,其中包含了core-site.xml、hdfs-site.xml、yarn-site.xml、mapred-site.xml和hadoop-env.sh等配置文件。
最后,使用docker-compose命令启动Docker容器,即可完成Hadoop集群的部署:
```
docker-compose up -d
```
在启动之后,可以通过访问http://localhost:50070查看Hadoop集群的状态,并通过Hadoop命令行工具(例如hdfs dfs -ls /)来操作文件系统。
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