The Hortonworks Community Connection is now live. A completely rebuilt Q&A forum, Knowledge Base, Code Hub and more, backed by the experts in the industry.

You will be redirected here in 10 seconds. If your are not redirected, click here to visit the new site.

The legacy Hortonworks Forum is now closed. You can view a read-only version of the former site by clicking here. The site will be taken offline on January 31,2016

Ambari Forum

Ambari – scaling instances up and down

  • #50050
    Sri Sushma K


    I have few questions regarding Ambari on EC2 as compared to Amazon EMR.

    1. For people who worked with Amazon EMR we know that we can increase or delete the number of instances that are running for a particular configuration.
    2. I configured Ambari on EC2, can a new EC2 instance be added at any point of time to the already existing cluster from the “add hosts” option in ambari UI?
    3. Also can I delete any instance that I do not need(obviously slave instance). I doubt it makes the cluster unstable, is not it ? Is there any workaround about how I can delete an instance from an already configured cluster?

    Thank You.

  • Author
  • #50051
    Jeff Sposetti

    For question #2: yes. First, create your EC2 instances and then run the “Add Hosts” wizard (found on the Hosts page) to add hosts to the cluster
    For question #3: yes. There is a “Delete Host” option in the Host Actions menu on the host page.

The forum ‘Ambari’ is closed to new topics and replies.

Support from the Experts

A HDP Support Subscription connects you experts with deep experience running Apache Hadoop in production, at-scale on the most demanding workloads.

Enterprise Support »

Become HDP Certified

Real world training designed by the core architects of Hadoop. Scenario-based training courses are available in-classroom or online from anywhere in the world

Training »

Hortonworks Data Platform
The Hortonworks Data Platform is a 100% open source distribution of Apache Hadoop that is truly enterprise grade having been built, tested and hardened with enterprise rigor.
Get started with Sandbox
Hortonworks Sandbox is a self-contained virtual machine with Apache Hadoop pre-configured alongside a set of hands-on, step-by-step Hadoop tutorials.
Modern Data Architecture
Tackle the challenges of big data. Hadoop integrates with existing EDW, RDBMS and MPP systems to deliver lower cost, higher capacity infrastructure.