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hadoop-slave's Introduction

hadoop-master

Cài hadoop và ghi đè 2 folder này vào thư mục hadoop

Cụm hadoop 3 node (1 namenode + 2 datanode).

Cấu hình hostname cho 3 node:

namenode 	<<IP namenode>>
datanode1 	<<IP datanode 1>>
datanode2	<<IP datanode 2>>

Yêu cầu 3 node:

- Chung network
- Thống nhất chứng chỉ ssh
- Cài đặt Java SDK

Cấu hình biến môi trường:

export HADOOP_HOME=/path/to/hadoop
export PATH=$PATH:$HADOOP_HOME/bin
export PATH=$PATH:$HADOOP_HOME/sbin
export HADOOP_MAPRED_HOME=${HADOOP_HOME}
export HADOOP_COMMON_HOME=${HADOOP_HOME}
export HADOOP_HDFS_HOME=${HADOOP_HOME}
export YARN_HOME=${HADOOP_HOME}
export JAVA_HOME=/path/to/java (ex: /usr/lib/jvm/java-8-openjdk-amd64)

export HDFS_NAMENODE_USER=<user>
export HDFS_DATANODE_USER=<user>
export HDFS_SECONDARYNAMENODE_USER=<user>

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