Apache Ambari Upgrade for IBM Power Systems
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To perform an HDP upgrade using Ambari, your cluster must meet the following prerequisites, whether you intend to perform a Rolling or Express upgrade. Meeting these prerequisites is essential for Ambari to know the cluster is in a healthy operating mode and can successfully manage the upgrade process. Your cluster must meet additional prerequisites for a Rolling Upgrade, which ensure that the cluster is configured properly to support the rolling upgrade orchestration process.

HDP Version

All hosts must have the target HDP version installed.

Disk Space

Be sure to have adequate space on /usr/hdp for the target HDP version. Each complete install of an HDP version will occupy about 2.5 GB of disk space.

Ambari Agent Heartbeats

All Ambari Agents must be communicating and heartbeating to Ambari Server. Any hosts that are not heartbeating must be in Maintenance Mode.

Host Maintenance Mode

The following two scenarios are checked:

  • Any hosts in Maintenance Mode must not be hosting any Service Master Components.

  • Any host in Maintenance Mode that is not hosting Master Components is allowed but you will receive a warning. You can proceed with your upgrade but these hosts will not be upgraded and before you can finalize the upgrade, you must delete the hosts from the cluster.

Service Maintenance Mode

No Services can be in Maintenance Mode.

Services Started

All Services must be started.

Service Checks

All Service Checks must pass. Be sure to run Service Actions > Run Service Check on all services (and remediate if necessary) prior to attempting an HDP upgrade.

Kerberos - Kafka

Ranger Policy Export/Import DB Requirements

HDP-2.6 and higher versions include Ranger policy import/export. The mininum database requirements for this feature are as follows:

  • MariaDB: 10.1.16+

  • MySQL: 5.6.x+

  • Oracle: 11gR2+

  • PostgreSQL: 8.4+

  • MS SQL: 2008 R2+

More Information

Rolling Upgrade Prerequisites

Register and Install Target Version

Remove Service