Before we get started with configuring Kerberos for Apache Hadoop, we need to set up the KDC and the different nodes on the cluster with the required packages.
KDC is the Kerberos server and should be the first step in configuring Kerberos on the cluster. The following are the steps to install the server packages:
Choose a node on the cluster that you would want to set up as the KDC. Ideally, this node should be used exclusively for the KDC; however, for this demonstration, I am using
node1.hclusterfor the KDC.Install the
krb5-libs,krb5-server, andkrb5-workstationpackages on the KDC node. Use the following commands as therootuser to install the packages:$ yum install krb5-libs $ yum install krb5-server $ yum install krb5-workstation
Update the
krb5.conffile in the/etc/folder from therootuser as shown in the following code:[logging] default = FILE:/var/log/krb5libs.log kdc = FILE:/var/log/krb5kdc.log admin_server = FILE:/var/log/kadmind...