My Experiments for Truth.

Git Configuration DESCRIPTION GIT COMMAND Configure the author name to be used with your commits. git config --global user.name "Sam Smith" Configure the author email address to be used with your commits git config --global user.email sam@example.com Will remove user credential details from the repository git config --local credential.helper "" List all currently configured remote repository URLs git remote -v If you haven't connected your local repository to a remote server, To add a remote server to a local repository git remote add origin Git Commit and Push DESCRIPTION GIT COMMAND Create a file name  README.md  with  Readme content  content echo "Readme content" >> README.md List the files you've changed

1 Name Node : 10.0.1.13 2 Data Nodes : 10.0.1.5 & 10.0.1.6 Name Node setup. ############### sudo apt-get update sudo apt-get install default-jre sudo apt-get install default-jdk root@namenode:~# java -version openjdk version "1.8.0_222" cd /opt/packages https://www-eu.apache.org/dist/hadoop/common/hadoop-2.8.5/hadoop-2.8.5.tar.gz tar -xvf hadoop-2.8.5.tar.gz cp -a hadoop-2.8.5 /etc/hadoop cd /etc/hadoop chown -R ubuntu. hadoop Make sure you are now logged in as Ubuntu user Then, add this to your .bashrc or .profile file. ############################################## export JAVA_HOME=/usr/lib/jvm/java-1.8.0-openjdk-amd64 export PATH="$PATH:$JAVA_HOME/bin" export HADOOP_HOME=/etc/hadoop export PATH=$PATH:$HADOOP_HOME/bin export PATH=$PATH:$HADOOP_HOME/sbin ############################################## ubuntu@namenode:~$ ssh-keygen -b 4096 ubuntu@namenode:~$ cat /home/ubuntu/.ssh/id_rsa.pub >> /home/ubuntu/.ssh/authorized