Viewing the list of Nodes

You can view the list of nodes in MCS and using the CLI.

Viewing the list of Nodes in the MapR Control System

Log in to MCS and click Nodes.
The page contains the following panes:
Node Health Displays each node’s health.
Top Utilization Displays nodes that are consuming the most CPU, memory, and disk.
Active Node Alerts Displays active alerts for nodes in the cluster.
Nodes Displays all the nodes in the cluster.
For each node in the cluster, the Nodes pane displays the following:
Column Name Column Description
Health The health of the node. Value can be:
  • — Healthy
  • — Degraded
  • — Critical
  • — Maintenance
Hostname The hostname of the node.
Physical IPs The physical IP address or addresses associated with the node.
Last FS Heartbeat The time since the node's last heartbeat to the CLDB.
Memory Utilized The amount of memory used by the node.
CPU Utilized The CPU usage metric for the node.
Disk Utilized The amount of disk space utilized on the node.
Physical Topology The rack path to the node.
Running Services The number of services running on the node.
Selecting the checkbox beside a node makes the following buttons available:

Retrieving the list of Nodes Using the CLI or REST API

The basic command to view all the nodes on a cluster is:

maprcli node list -cluster <cluster>

For complete reference information, see node list.