# gen core-site.xml
sed s/HOSTNAME/$(ip addr show eth0 | grep -Po 'inet \K[\d.]+')/ /etc/hadoop/conf/core-site.xml.template > /etc/hadoop/conf/core-site.xml
cat /etc/hadoop/conf/core-site.xml

# log dir
mkdir -p /home/jamesmo/shared_with_docker_container/hadoop-log-dir
chown -R hdfs:hdfs /home/jamesmo/shared_with_docker_container/hadoop-log-dir

# create namenode
mkdir -p /home/jamesmo/shared_with_docker_container/cdh4/nn
chown -R hdfs:hdfs /home/jamesmo/shared_with_docker_container/cdh4/nn
chmod 700 /home/jamesmo/shared_with_docker_container/cdh4/nn

# format namenode
sudo -u hdfs hdfs namenode -format