


This guide details how to integrate Hadoop and other tools on the Debian system, covering key steps such as Java environment construction, Hadoop configuration, cluster startup and management.
1. Java environment preparation
First, make sure that your system has Java 8 or higher installed. Install OpenJDK 8 using the following command:
sudo apt update sudo apt install openjdk-8-jdk
Verify installation:
java -version
2. Hadoop download and decompression
Download the latest version of Hadoop installation package (such as Hadoop 3.3.1) from the Apache Hadoop official website and unzip it to the specified directory (such as /usr/local/hadoop
):
wget https://downloads.apache.org/hadoop/common/hadoop-3.3.1/hadoop-3.3.1.tar.gz tar -xzvf hadoop-3.3.1.tar.gz -C /usr/local/hadoop
3. Environment variable configuration
Edit the ~/.bashrc
file and add the following environment variables:
export JAVA_HOME=/usr/lib/jvm/jdk-8-openjdk-amd64 export HADOOP_HOME=/usr/local/hadoop export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin
Make the configuration take effect:
source ~/.bashrc
4. Hadoop core configuration
Modify Hadoop core configuration files ( core-site.xml
, hdfs-site.xml
, mapred-site.xml
, yarn-site.xml
). The following is an example configuration:
core-site.xml
:
<configuration> <property> <name>fs.defaultFS</name> <value>hdfs://namenode:9000</value> </property> </configuration>
hdfs-site.xml
:
<configuration> <property> <name>dfs.replication</name> <value>3</value> </property> <property> <name>dfs.namenode.name.dir</name> <value>/usr/local/hadoop/dfs/name</value> </property> <property> <name>dfs.datanode.data.dir</name> <value>/usr/local/hadoop/dfs/data</value> </property> </configuration>
mapred-site.xml
:
<configuration> <property> <name>mapreduce.framework.name</name> <value>yarn</value> </property> </configuration>
yarn-site.xml
:
<configuration> <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> <property> <name>yarn.nodemanager.aux-services.mapreduce.shuffle.class</name> <value>org.apache.hadoop.mapred.ShuffleHandler</value> </property> </configuration>
5. HDFS formatting
On the NameNode node, execute the following command to format HDFS:
hdfs namenode -format
6. Hadoop service starts
Start Hadoop service on NameNode:
start-dfs.sh start-yarn.sh
7. Installation verification
Execute the following command to verify that Hadoop is started successfully:
hdfs dfs -ls /
Or access the Hadoop management interface.
8. Cluster configuration and management
This step involves inter-node network configuration, storage space configuration, JVM parameter optimization, job scheduling policy setting, and cluster monitoring and management using tools such as Ambari or Cloudera Manager.
Through the above steps, you can successfully build and manage Hadoop clusters on the Debian system. Please adjust the configuration parameters according to your actual environment.
The above is the detailed content of How Debian integrates Hadoop with other tools. For more information, please follow other related articles on the PHP Chinese website!

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