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Resize root partition (or how to remove the default /home partition) on CentOS 7 online

This requires you to be able to ssh into the instance using the root user account and that no services be running as users out of /home on the target machine.

The examples are from a default installation with no customation-you NEED to know what you're working with for volumes/partitions to not horribly break things.

By default, CentOS 7 uses XFS for the file system and Logical Volume Manager (LVM), creating 3 partitions: /,/home and

Step 1 - Copy /home Contents

To backup the contents of /home, do the following:

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Spark HWC integration - HDP 3 Secure cluster

Prerequisites :

• Kerberized Cluster

• Enable hive interactive server in hive

• Get following details from hive for spark or try this HWC Quick Test Script

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Steps to Enable Secure SSL Kafka brokers

1) Kerberize Cluster

1.1) Login to a Kafka client node and export KAFKA_CLIENT_KERBEROS_PARAMS

export KAFKA_CLIENT_KERBEROS_PARAMS="-Djava.security.auth.login.config=/usr/hdp/current/kafka-broker/config/kafka_client_jaas.conf" 

1.2) Lets test kafka producer and consumer without keytab

Use this jaas conf file