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Hadoop 3 MultiNode (Ubuntu-20)
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Hadoop 3 MultiNode (Ubuntu-20)
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# Connect To the server with Public Key or Private in case of windows through Putty.
ssh -i Downloads/file.pem ubuntu@public_dns_address
# Update the system
sudo apt-get update && sudo apt-get dist-upgrade -y
# Copy public key on to the DataCenter main server
scp -i multi.pem multi.pem ubuntu@public_dns:~/.ssh
# Create a Hadoop user for accessing HDFS
sudo addgroup hadoop
sudo adduser hduser --ingroup hadoop
sudo adduser hduser sudo
sudo su hduser
# Create local key
ssh-keygen
cd .ssh
cat id_rsa.pub >> authorized_keys
# Copy the instance public key (multi.pem) to hduser's directory
sudo su
cp /home/ubuntu/.ssh/multi.pem /home/hduser/.ssh/
chown hduser:hadoop /home/hduser/.ssh/multi.pem
exit
# Install Java 8 (Open-JDK)
sudo apt install openjdk-8-jdk openjdk-8-jre -y
java -version
# Download and Install Hadoop
wget https://dlcdn.apache.org/hadoop/common/stable/hadoop-3.3.5.tar.gz
tar -xzvf hadoop-3.3.5.tar.gz
sudo mv hadoop-3.3.5 /usr/local/hadoop
sudo chown -R hduser:hadoop /usr/local/hadoop
# Set Enviornment Variable
# readlink -f $(which java)
~/ nano .bashrc
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export HADOOP_HOME=/usr/local/hadoop
export PATH=$PATH:$HADOOP_HOME/bin
export PATH=$PATH:$HADOOP_HOME/sbin
export PATH=$PATH:/usr/local/hadoop/bin/
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_CONF_DIR=/usr/local/hadoop/etc/hadoop
~/ source .bashrc
cd /usr/local/hadoop/etc/hadoop/
#Update hadoop-env.sh
nano hadoop-env.sh
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export HADOOP_LOG_DIR=/var/log/hadoop
sudo mkdir /var/log/hadoop/
sudo chown -R hduser:hadoop /var/log/hadoop
#Disable FireWall iptables
sudo iptables -L -n
sudo ufw status
sudo ufw disable
#Disabling Transparent Hugepage Compaction
cat /sys/kernel/mm/transparent_hugepage/defrag
$ sudo nano /etc/init.d/disable-transparent-hugepages
#!/bin/sh
### BEGIN INIT INFO
# Provides: disable-transparent-hugepages
# Required-Start: $local_fs
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Disable Linux transparent huge pages
# Description: Disable Linux transparent huge pages, to improve
# database performance.
### END INIT INFO
case $1 in
start)
if [ -d /sys/kernel/mm/transparent_hugepage ]; then
thp_path=/sys/kernel/mm/transparent_hugepage
elif [ -d /sys/kernel/mm/redhat_transparent_hugepage ]; then
thp_path=/sys/kernel/mm/redhat_transparent_hugepage
else
return 0
fi
echo 'never' > ${thp_path}/enabled
echo 'never' > ${thp_path}/defrag
unset thp_path
;;
esac
$ sudo chmod 755 /etc/init.d/disable-transparent-hugepages
$ sudo update-rc.d disable-transparent-hugepages defaults
>>Restart server
# Set Swappiness
sudo sysctl -a | grep vm.swappiness
sudo sysctl vm.swappiness=1
# Configure NTP
timedatectl status
timedatectl list-timezones
sudo timedatectl set-timezone Asia/Kolkata
sudo apt install ntp -y
##Configure SSH Password less logins
sudo su -c touch /home/hduser/.ssh/config; echo "Host *\n StrictHostKeyChecking no\n
UserKnownHostsFile=/dev/null" > /home/hduser/.ssh/config
sudo service ssh restart
# Configure .profile (make sure you are on NN)
nano .profile
eval `ssh-agent` ssh-add /home/hduser/.ssh/abc.pem
source .profile
----------****** Create a AMI at this point ******-----------------
***Create 4 nodes from this image***
#sudo nano /etc/hosts (and include these lines:FQDN)
172.31.29.56 ip-172-31-29-56.ec2.internal nn
172.31.27.96 ip-172-31-27-96.ec2.internal rm
172.31.18.137 ip-172-31-18-137.ec2.internal 1dn
172.31.23.79 ip-172-31-23-79.ec2.internal 2dn
172.31.16.236 ip-172-31-16-236.ec2.internal 3dn
Do this for all nodes
# Install and Configure dsh
sudo apt install dsh -y
sudo nano /etc/dsh/machines.list
#localhost
nn
rm
1dn
2dn
3dn
dsh -a uptime
dsh -a source .profile
cd /usr/local/hadoop/etc/hadoop
# Configure masters and slaves
nano masters
rm
nano workers
1dn
2dn
3dn
#Update core-site.xml
nano core-site.xml
<property>
<name>fs.defaultFS</name>
<value>hdfs://nn:9000</value>
</property>
#Update hdfs-site.xml on name node
mkdir -p /usr/local/hadoop/data/hdfs/namenode
nano hdfs-site.xml
<property>
<name>dfs.replication</name>
<value>3</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:///usr/local/hadoop/data/hdfs/namenode</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:///usr/local/hadoop/data/hdfs/datanode</value>
</property>
#Create proper directories on datanode's
dsh -m 1dn,2dn,3dn mkdir -p /usr/local/hadoop/data/hdfs/datanode
#Update yarn-site.xml
nano yarn-site.xml
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>rm</value>
</property>
<property>
<name>yarn.nodemanager.env-whitelist</name>
<value>JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,CLASSPATH_PREPEND_DISTCACHE,HADOOP_YARN_HOME,HADOOP_MAPRED_HOME</value>
</property>
#Update mapred-site.xml
nano mapred-site.xml
<property>
<name>mapreduce.jobtracker.address</name>
<value>rm:54311</value>
</property>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
<property>
<name>yarn.app.mapreduce.am.env</name>
<value>HADOOP_MAPRED_HOME=$HADOOP_MAPRED_HOME</value>
</property>
<property>
<name>mapreduce.map.env</name>
<value>HADOOP_MAPRED_HOME=$HADOOP_MAPRED_HOME</value>
</property>
<property>
<name>mapreduce.reduce.env</name>
<value>HADOOP_MAPRED_HOME=$HADOOP_MAPRED_HOME</value>
</property>
sudo chown -R hduser:hadoop $HADOOP_HOME
#SCP all the files
cd /usr/local/hadoop/etc/hadoop
For all nodes
scp core-site.xml hdfs-site.xml mapred-site.xml yarn-site.xml workers rm:/usr/local/hadoop/etc/hadoop
scp core-site.xml hdfs-site.xml mapred-site.xml yarn-site.xml workers 1dn:/usr/local/hadoop/etc/hadoop
scp core-site.xml hdfs-site.xml mapred-site.xml yarn-site.xml workers 2dn:/usr/local/hadoop/etc/hadoop
scp core-site.xml hdfs-site.xml mapred-site.xml yarn-site.xml workers 3dn:/usr/local/hadoop/etc/hadoop
#Format Namenode
hdfs namenode -format
# Starting the cluster
# on NN
start-dfs.sh
#on RM
ssh rm
start-yarn.sh
jps
dsh -a jps
##checking NN web ui
NN Private ip:9870
##checking RM web ui
RM Public ip:8088
## for testing
hdfs dfs -mkdir /user
hdfs dfs -mkdir /user/ubuntu
hdfs dfs -put hadoop-3.3.4o apt .tar.gz /user/ubuntu
hdfs dfs -ls
hdfs dfs -ls -R
yarn jar /usr/local/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-*.jar pi 5 10