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Install Hadoop2.7.3

Shulou Source: shulou.com Published: 2022-06-03 06:54:56 09月23日 Update

1. Extract and move to the appropriate directory. I am used to putting the software in the / opt directory. The command is as follows:

Tar-zxvf hadoop-2.7.3.tar.gz

Mv hadoop-2.7.3 / opt

two。 Modify / etc/profile

3. Modify $HADOOP_HOME/etc/hadoop/hadoop-env.sh

4. Modify $HADOOP_HOME/etc/hadoop/slaves

5. Modify $HADOOP_HOME/etc/hadoop/core-site.xml

6. Modify $HADOOP_HOME/etc/hadoop/hdfs-site.xml

7. Modify $HADOOP_HOME/etc/hadoop/mapred-site.xml

8. Modify $HADOOP_HOME/etc/hadoop/yarn-site.xml

9. Copy the hadoop folder of the Master node to Slave1 and Slave2.

Scp-r / opt/hadoop-2.7.3 hadoop@slave1.hadoop:/opt

Scp-r / opt/hadoop-2.7.3 hadoop@slave2.hadoop:/opt

Modify / etc/profile on slave1.hadoop and slave2.hadoop respectively, the process is the same as master.hadoop

10. Format command on master machine: hadoop namenode-format

Start the command on the master machine: ${HADOOP_HOME} / sbin/start-all.sh

Close the command on the master machine: ${HADOOP_HOME} / sbin/stop-all.sh

11. Check whether the cluster starts successfully

Command: jps