Managing High Availability
Also available as:

Enable ResourceManager high availability

To access the wizard and enable ResourceManager high availability:

If you are working in an HDP 2.2 or later environment, you can configure high availability for ResourceManager by using the Enable ResourceManager HA wizard.
You must have at least three:
  • hosts in your cluster

  • Apache ZooKeeper servers running

  1. In Ambari Web, browse to Services > YARN > Summary.
  2. Select Service Actions and choose Enable ResourceManager HA.
    The Enable ResourceManager HA wizard launches, describing a set of automated and manual steps that you must take to set up ResourceManager high availability.
  3. On Get Started, read the overview of enabling ResourceManager HA.

    Click Next to proceed.
  4. On Select Host, accept the default selection or choose an available host.

    Click Next to proceed.
  5. On Review Selections, expand YARN if necessary, to review all the configuration changes proposed for YARN.

    Click Next to approve the changes and start automatically configuring ResourceManager HA.
  6. On Configure Components, click Complete when all the progress bars finish tracking.