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.