Preparing Each Node

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

 

Requirements

CPU

64-bit

OS

RedHat, Oracle Linux, 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 subsequent sections as a checklist to make each candidate node suitable for its assigned roles. Once each node has been prepared or disqualified, install MapR software.