This is documentation for MapR Version 5.0. You can also refer to MapR documentation for the latest release.

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Each node contributes to the cluster designed in the previous step, so each must be able to run MapR and Hadoop software.

 

Requirements

CPU

64-bit

OS

Red Hat, CentOS, SUSE, or Ubuntu

Memory

8 GB minimum, more in production

Disk

Raw, unformatted drives and partitions

DNS

Hostname, reaches all other nodes

Users

Common users across all nodes; passwordless ssh (optional)

Java

Must run Java

Other

NTP, Syslog, PAM

Use the following sections as a checklist to make each candidate node suitable for its assigned roles. Once each node has been prepared or disqualified, proceed to Step 3, Installing MapR Software.

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MapR services require the Java runtime environment (JRE) and Java Development Kit (JDK).

Run java -version. Verify that one of these versions is installed on the node:

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