How to install Hadoop 2.7.3 cluster on CentOS 7.3

#############################
#ENV
#spark01 192.168.51.6
#spark02 192.168.51.18
#spark03 192.168.51.19
#spark04 192.168.51.21
#spark05 192.168.51.24
############################
##We must to improve file limits on every nodes
echo "ulimit -SHn 204800" >> /etc/rc.local
echo "ulimit -SHu 204800" >> /etc/rc.local
cat >> /etc/security/limits.conf << EOF
*          soft   nofile    204800
*          hard   nofile    204800
*          soft   nproc     204800
*          hard   nproc     204800
EOF
##We must to disable ipv6 on every nodes
echo 'net.ipv6.conf.all.disable_ipv6 = 1'>>/etc/sysctl.conf
echo 'net.ipv6.conf.default.disable_ipv6 = 1' >>/etc/sysctl.conf
echo 'vm.swappiness = 0' >> /etc/sysctl.conf
sysctl -p
echo 'echo never > /sys/kernel/mm/transparent_hugepage/defrag' >> /etc/rc.local
chmod +x /etc/rc.d/rc.local

#1)Edit /etc/hosts file on every nodes
cat >/etc/hosts<<EOF
127.0.0.1   localhost
192.168.51.6    spark01
192.168.51.18   spark02
192.168.51.19   spark03
192.168.51.21   spark04
192.168.51.24   spark05
EOF

#2)install jdk on every nodes
wget http://god.nongdingbang.net/downloads/auto_jdk_1.8.sh
sh auto_jdk_1.8.sh
source /etc/profile.d/java.sh

#3)create hadoop user on every nodes
groupadd hadoop -g 700
useradd hadoop -g hadoop -u 700
echo "hadoop123"|passwd --stdin hadoop
echo 'hadoop ALL=(ALL) NOPASSWD: ALL' >>/etc/sudoers

#4)set permission with opt directory on every nodes
chown -R hadoop.hadoop /opt/

#5)Set up key-based (passwordless) login:
#just do it no spark01
su - hadoop
ssh-keygen
ssh-copy-id -i ~/.ssh/id_rsa.pub hadoop@spark01
ssh-copy-id -i ~/.ssh/id_rsa.pub hadoop@spark02
ssh-copy-id -i ~/.ssh/id_rsa.pub hadoop@spark03
ssh-copy-id -i ~/.ssh/id_rsa.pub hadoop@spark04
ssh-copy-id -i ~/.ssh/id_rsa.pub hadoop@spark05

#6)install hadoop on spark01 and propagate /opt/hadoop2.7.3 to other nodes:
cd /home/tools
sudo wget http://god.nongdingbang.net/downloads/hadoop-2.7.3.tar.gz
sudo tar zxvf hadoop-2.7.3.tar.gz -C /opt/
sudo chown -R hadoop.hadoop /opt/hadoop-2.7.3
scp -r /opt/hadoop-2.7.3 hadoop@spark02:/opt
scp -r /opt/hadoop-2.7.3 hadoop@spark03:/opt
scp -r /opt/hadoop-2.7.3 hadoop@spark04:/opt
scp -r /opt/hadoop-2.7.3 hadoop@spark05:/opt

#7)Edit this file on every nodes
sudo su -
cat >/etc/profile.d/hadoop.sh <<EOF
export HADOOP_PREFIX=/opt/hadoop-2.7.3
export HADOOP_HOME=\$HADOOP_PREFIX
export HADOOP_COMMON_HOME=\$HADOOP_PREFIX
export HADOOP_CONF_DIR=\$HADOOP_PREFIX/etc/hadoop
export HADOOP_HDFS_HOME=\$HADOOP_PREFIX
export HADOOP_MAPRED_HOME=\$HADOOP_PREFIX
export HADOOP_YARN_HOME=\$HADOOP_PREFIX
export PATH=\$PATH:\$HADOOP_PREFIX/sbin:\$HADOOP_PREFIX/bin
EOF
source /etc/profile.d/hadoop.sh

#8)Edit /opt/hadoop/etc/hadoop/core-site.xml
##set up NameNode URI on every node:
######################################################
cat >/opt/hadoop-2.7.3/etc/hadoop/core-site.xml<<EOF
<configuration>
<property>
    <name>fs.defaultFS</name>
    <value>hdfs://spark01:9000</value>
</property>
<property>
    <name>io.file.buffer.size</name>
    <value>131072</value>
</property>
<property>
    <name>hadoop.tmp.dir</name>
    <value>/opt/hadoop-2.7.3/tmp/</value>
</property>
<property>
   <name>hadoop.proxyuser.hadoop.hosts</name>
   <value>*</value>
</property>
<property>  
   <name>hadoop.proxyuser.hadoop.groups</name>
   <value>*</value>
</property>
</configuration>
EOF

#9)Create HDFS DataNode data dirs on every node and change ownership
mkdir -p /opt/storage/{datanode,namenode}
chown -R hadoop.hadoop /opt/storage

#10)Edit /opt/hadoop/etc/hadoop/hdfs-site.xml on every nodes– set up DataNodes:
###############################################
cat >/opt/hadoop-2.7.3/etc/hadoop/hdfs-site.xml<<EOF
<configuration>
<property>
  <name>dfs.replication</name>
  <value>3</value>
</property>
<property>
  <name>dfs.permissions</name>
  <value>false</value>
</property>
<property>
  <name>dfs.datanode.data.dir</name>
  <value>/opt/storage/datanode</value>
</property>
<property>
  <name>dfs.namenode.data.dir</name>
  <value>/opt/storage/namenode</value>
</property>
<property>
  <name>dfs.secondary.http.address</name>
  <value>spark01:50090</value>
</property>
<property>
  <name>dfs.namenode.http-address</name>
  <value>spark01:50070</value>
</property>
<property>
  <name>dfs.webhdfs.enabled</name>
  <value>true</value>
</property>
</configuration>
EOF

#11)Edit /opt/hadoop/etc/hadoop/mapred-site.xml on spark01.
#################################################################
cat > /opt/hadoop-2.7.3/etc/hadoop/mapred-site.xml <<EOF
<configuration>
 <property>
    <name>mapreduce.framework.name</name>
    <value>yarn</value>
  </property>
  <property>
    <name>mapreduce.jobhistory.address</name>
    <value>spark01:10020</value>
  </property>
  <property>
    <name>mapreduce.jobhistory.webapp.address</name>
    <value>spark01:19888</value>
  </property>
</configuration>
EOF

#12)setup ResourceManager on spark01 and NodeManagers on spark02-05
#########################################################################
cat >/opt/hadoop-2.7.3/etc/hadoop/yarn-site.xml<<EOF
<configuration>
<property>
  <name>yarn.resourcemanager.hostname</name>
  <value>spark01</value>
</property>
<property>
  <name>yarn.nodemanager.hostname.nm1</name>
  <value>spark02</value>
</property>
<property>
  <name>yarn.nodemanager.hostname.nm2</name>
  <value>spark03</value>
</property>
<property>
  <name>yarn.nodemanager.hostname.nm3</name>
  <value>spark04</value>
</property>
<property>
  <name>yarn.nodemanager.hostname.nm4</name>
  <value>spark05</value>
</property>
<property>
  <name>yarn.nodemanager.aux-services</name>
  <value>mapreduce_shuffle</value>
</property>
</configuration>
EOF

#13)Edit /opt/hadoop-2.7.3/etc/hadoop/slaves on spark01
##(so that master may start all necessary services on slaves automagically):
###############################################################
cat >/opt/hadoop-2.7.3/etc/hadoop/slaves<<EOF
spark02
spark03
spark04
spark05
EOF

#14)Format NameNode
##Just do it on spark01
su - hadoop
hdfs namenode -format

#15)Start HDFS on spark01:(as user hadoop):
start-dfs.sh

#16)Also try accessing http://spark01:50070/
#Start YARN on spark01:(as user hadoop):
start-yarn.sh 

################################################################################
#Install Hue
#################################################################################
##17) Install Hue on spark01
##http://archive.cloudera.com/cdh6/cdh/5/

sudo su -

cat > /etc/yum.repos.d/apache-maven.repo <<EOF
[apache-maven]
name=maven from apache foundation.
baseurl=http://repos.fedorapeople.org/repos/dchen/apache-maven/epel-\$releasever/\$basearch/
enabled=1
skip_if_unavailable=1
gpgcheck=0
[apache-maven-source]
name=maven from apache foundation. - Source
baseurl=http://repos.fedorapeople.org/repos/dchen/apache-maven/epel-\$releasever/SRPMS
enabled=0
skip_if_unavailable=1
gpgcheck=0
EOF

cd /home/tools
yum -y install epel-release apache-maven ant python-simplejson gmp-devel \
libffi-devel asciidoc cyrus-sasl-devel rsync \
cyrus-sasl-gssapi gcc gcc-c++ krb5-devel \
libxml2-devel libxslt-devel make openssl-devel \
openldap-devel python-devel sqlite-devel 
wget http://god.nongdingbang.net/downloads/hue-latest.tar.gz
tar zxvf hue-latest.tar.gz
cd /home/tools/hue-3.9.0-cdh6.12.0 && PREFIX=/opt/ make install
sed -i '21s/secret_key=/secret_key=jerry2049205020512052,with==nothing/' /opt/hue/desktop/conf/hue.ini
sed -i 's#America/Los_Angeles#Asia/Shanghai#' /opt/hue/desktop/conf/hue.ini
sed -i '62s/## server_user=hue/server_user=hadoop/' /opt/hue/desktop/conf/hue.ini
sed -i '63s/## server_group=hue/server_group=hadoop/' /opt/hue/desktop/conf/hue.ini
sed -i '69s/## default_hdfs_superuser=hdfs/default_hdfs_superuser=hadoop/' /opt/hue/desktop/conf/hue.ini
sed -i '66s/## default_user=hue/default_user=hadoop/' /opt/hue/desktop/conf/hue.ini
sed -i '837s#hdfs://localhost:8020#hdfs://spark01:9000#' /opt/hue/desktop/conf/hue.ini
sed -i '845s#http://localhost:50070#http://spark01:50070#' /opt/hue/desktop/conf/hue.ini
sed -i '845s/## webhdfs_url/webhdfs_url/' /opt/hue/desktop/conf/hue.ini
chown -R hadoop.hadoop /opt/hue/

##18) Start Hue on spark01 by hadoop user(web_port:8888)
su - hadoop
nohup /opt/hue/build/env/bin/supervisor &