Step 1. Install JAVA/JDK
java -version
java version “1.8.0_05”
Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
Java HotSpot(TM) Client VM (build 25.5-b02, mixed mode)
Step 2. Download Hadoop 2.4.0
Now download hadoop 2.4.0 source archive file using below command. You can also select alternate download mirror for increasing download speed.
$ cd ~
$ wget http://apache.claz.org/hadoop/common/hadoop-2.4.0/hadoop-2.4.0.tar.gz
$ tar xzf hadoop-2.4.0.tar.gz
Step 3. Configure Hadoop 2.4.0
export HADOOP_HOME=/home/hadoop/hadoop
export HADOOP_INSTALL=$HADOOP_HOME
export HADOOP_MAPRED_HOME=$HADOOP_HOME
export HADOOP_COMMON_HOME=$HADOOP_HOME
export HADOOP_HDFS_HOME=$HADOOP_HOME
export YARN_HOME=$HADOOP_HOME
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_HOME/lib/native
export PATH=$PATH:$HADOOP_HOME/sbin:$HADOOP_HOME/bin
Now apply the changes in current running environment
$ source ~/.bashrc
Now edit $HADOOP_HOME/etc/hadoop/hadoop-env.sh file and set JAVA_HOME environment variable
export JAVA_HOME=/opt/jdk1.8.0_05/
Edit Configuration Files
$ cd $HADOOP_HOME/etc/hadoop
Edit core-site.xml
<configuration> <property> <name>fs.default.name</name> <value>hdfs://localhost:9000</value> </property> </configuration>
Edit hdfs-site.xml
<configuration> <property> <name>dfs.replication</name> <value>1</value> </property> <property> <name>dfs.name.dir</name> <value>file:///home/hadoop/hadoopdata/hdfs/namenode</value> </property> <property> <name>dfs.data.dir</name> <value>file:///home/hadoop/hadoopdata/hdfs/datanode</value> </property> </configuration>
Edit mapred-site.xml
<configuration> <property> <name>mapreduce.framework.name</name> <value>yarn</value> </property> </configuration>
Edit yarn-site.xml
<configuration> <property> <name>yarn.nodemanager.aux-services</name> <value>mapreduce_shuffle</value> </property> </configuration>
Format Namenod
$ hdfs namenode -format
[Sample output]
14/05/04 21:30:55 INFO namenode.NameNode: STARTUP_MSG: /************************************************************ STARTUP_MSG: Starting NameNode STARTUP_MSG: host = svr1.tecadmin.net/192.168.1.11 STARTUP_MSG: args = [-format] STARTUP_MSG: version = 2.4.0 ... ... 14/05/04 21:30:56 INFO common.Storage: Storage directory /home/hadoop/hadoopdata/hdfs/namenode has been successfully formatted. 14/05/04 21:30:56 INFO namenode.NNStorageRetentionManager: Going to retain 1 images with txid >= 0 14/05/04 21:30:56 INFO util.ExitUtil: Exiting with status 0 14/05/04 21:30:56 INFO namenode.NameNode: SHUTDOWN_MSG: /************************************************************ SHUTDOWN_MSG: Shutting down NameNode at svr1.tecadmin.net/192.168.1.11 ************************************************************/
Step 4. Setup Hadoop User
We recommend to create a normal (nor root) account for hadoop working. So create a system account using following command.
useradd hadoop # passwd hadoop
After creating account, it also required to set up key based ssh to its own account.
To do this use execute following commands.
su – hadoop
$ ssh-keygen -t rsa
$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
$ chmod 0600 ~/.ssh/authorized_keys
Lets verify key based login. Below command should not ask for password but first time it will prompt for adding RSA to the list of known hosts.
$ ssh localhost
$ exit
Step 5. Start Hadoop Cluster
$ cd $HADOOP_HOME/sbin/
Now run start-dfs.sh script.
$ start-dfs.sh [Sample output] 14/05/04 21:37:56 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable Starting namenodes on [localhost] localhost: starting namenode, logging to /home/hadoop/hadoop/logs/hadoop-hadoop-namenode-svr1.tecadmin.net.out localhost: starting datanode, logging to /home/hadoop/hadoop/logs/hadoop-hadoop-datanode-svr1.tecadmin.net.out Starting secondary namenodes [0.0.0.0] 0.0.0.0: starting secondarynamenode, logging to /home/hadoop/hadoop/logs/hadoop-hadoop-secondarynamenode-svr1.tecadmin.net.out 14/05/04 21:38:16 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Now run start-yarn.sh script.
$ start-yarn.sh [Sample output] starting yarn daemons starting resourcemanager, logging to /home/hadoop/hadoop/logs/yarn-hadoop-resourcemanager-svr1.tecadmin.net.out localhost: starting nodemanager, logging to /home/hadoop/hadoop/logs/yarn-hadoop-nodemanager-svr1.tecadmin.net.out
Thanks…