Apache Hue or Apache Ambari - how to install and configure them manually

Question

I am seting up 5 node hadoop 2.5.1 cluster with zookeeper, oozie, hive and hbase. I currently have hadoop 2 and zookeeper installed and running. I want to setup some kind of UI management for all the services so I can monitor health and do admin tasks from it. I see all documents for Ambari and Hue are geared towards Hortornworks and Cloudera respectively. Is there any step-by-step guide for either of these UI console that tells me how to configure them for my existing hadoop services ?

Answer 1

Officialy, Ambari does not support installation on an existing cluster. When you install it you have to remove previous hadoop components. As mentioned on Ambari FAQ Installing a new cluster on top of an existing cluster

When installing a Hadoop cluster via Ambari on hosts that already have Hadoop bits installed (including an existing cluster deployed via Ambari), perform the following:

Stop all the services on all the nodes(including ganglia and nagios)
It is also a good practice to delete the rpms from all nodes.

search for the rpms:
rpm -qa | grep ganglia
rpm -qa | grep oozie
rpm -qa | grep sqoop
rpm -qa | grep pig
rpm -qa | grep nagios
rpm -qa | grep hadoop

and remove them :
rpm -e <package name>

Answer 2

Hue has this blog post about how to integrate with any cluster.

We also recommend this doc. It says Cloudera but this is the same instruction for any Hadoop (as Hue uses only standard APIs).

Answer 3

Hortonworks documentation provides Hue install instructions as well :

https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.3.0/bk_installing_manually_book/bk_installing_manually_book-20150721.pdf

Chapter 14. Installing Hue

Hue requires services to be stopped on cluster, no need to remove them like Ambari install requires.