![]() /usr/local/hadoop/etc/hadoop/hdfs-site.xmlīefore editing the./usr/local/hadoop/etc/hadoop/core-site.xml. ![]() ![]() /usr/local/hadoop/etc/hadoop/hadoop-env.sh.The following files should to be modified to complete the Hadoop setup: Now, the hduser has root priviledge, we can move the Hadoop installation to the /usr/local/hadoop directory without any sudo su sudo mv * sudo chown -R hduser:hadoop /usr/local/hadoop This can be resolved by logging in as a root user, and then add hduser to sudo su sudo adduser hduser sudo Sorry, user hduser may not run sudo on laptop. We can check again if hduser is not in sudo sudo -v So, we should create the directory sudo mkdir -p /usr/local/hadoop We want to move the Hadoop installation to the /usr/local/hadoop directory. Install wget tar xvzf hadoop-2.6.5.tar.gz Warning: Permanently added 'localhost' (ECDSA) to the list of known hosts. The authenticity of host 'localhost (127.0.0.1)' can't be established.ĮCDSA key fingerprint is SHA256:e8SM2INFNu8NhXKzdX9bOyKIKbMoUSK4dXKonloN8JY.Īre you sure you want to continue connecting (yes/no)? yes The second command adds the newly created key to the list of authorized keys so that Hadoop can use ssh without prompting for a password. | cat $HOME/.ssh/id_rsa.pub > $HOME/.ssh/authorized_keys SHA256:/M18Dv+ku5js8npZvYi45Fr4F84SzoqXBUO5xAfo+/8 key's randomart image is: Your public key has been saved in /home/hduser/.ssh/id_rsa.pub. Your identification has been saved in /home/hduser/.ssh/id_rsa. If asked for a filename just leave it blank and press the enter key to su hduserĮnter file in which to save the key (/home/hduser/.ssh/id_rsa): However, this requirement can be eliminated by creating and setting up SSH certificates using the following commands. Hadoop uses SSH (to access its nodes) which would normally require the user to enter a password. So, we need to have SSH up and running on our machine and configured it to allow SSH public key authentication. For our single-node setup of Hadoop, we therefore need to configure SSH access to localhost. Hadoop requires SSH access to manage its nodes, i.e. ![]()
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