dic_bash_script

echo "Now script is updating hadoop configuration files"

#cat >> /usr/local/hadoop/etc/hadoop/hadoop-env.sh << EOL
#export JAVA_HOME=/usr/
#EOL

cd /usr/lib/hadoop/etc/hadoop

cat > core-site.xml << EOL
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:9000</value>
</property>
</configuration>
'EOL'

cp mapred-site.xml.template mapred-site.xml
cat > mapred-site.xml << EOL
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
'EOL'

cat > yarn-site.xml << EOL
<configuration>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
</configuration>
'EOL'

cat > hdfs-site.xml << EOL
<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.name.dir</name>
<value>file:///home/hadoop/hadoopinfra/hdfs/namenode </value>
</property>
<property>
<name>dfs.data.dir</name>
<value>file:///home/hadoop/hadoopinfra/hdfs/datanode </value >
</property>
</configuration>
'EOL'

echo "Completed process Now Reloading Bash Profile...."
cd ~

echo "You may require reloading bash profile, you can reload using following command."
echo "source ~/.bashrc"

echo "To Start you need to format Name Node Once you can use following command."
echo "hdfs namenode -format"

echo "Hadoop configured. now you can start hadoop using following commands. "
echo "start-dfs.sh"
echo "start-yarn.sh"

echo "To stop hadoop use following scripts."
echo "stop-dfs.sh"
echo "stop-yarn.sh"