node services

Starts, stops, or restarts services on one or more server nodes. Permissions required: ss, fc or a.

To start or stop services, you must specify the service name, the action (start, stop, or restart), and the nodes on which to perform the action. You can specify the nodes in either of two ways:

  • Use the nodes parameter to specify a space-delimited list of node names.
  • Use the filter parameter to specify all nodes that match a certain pattern. See Filters for more information.

Syntax

CLI
maprcli node services
    [ -action start|stop|restart ]
    [ -apiserver start|stop|restart ]
    [ -cldb start|stop|restart ]
    [ -cluster <cluster> ]
    [ -fileserver start|stop|restart ]
    [ -filter <filter> ]

    [ -name <service> ]
    [ -nfs start|stop|restart ]
    
    [ -nodes <node names> ]

    [ -zkconnect <ZooKeeper Connect String> ]
REST
Request Type POST
Request URL
http[s]://<host>:<port>/rest/node/services[?<parameters>] 

Parameters

To perform an action on a service, on a particular set of nodes, you must specify the following three parameters:

  • action- the action to perform; starting, stopping, suspending, resuming, or restarting a service.
  • node or filter - the nodes on which to perform the action; either a list of nodes, or a filter that matches a set of nodes
  • name - the service on which to perform the action

The following table lists the parameters available with the node services command.

Parameter

Description

action An action to perform on a service specified in the name parameter: Values: start, stop, suspend, resume, or restart
apiserver Starts, stops, or restarts the apiserver. Values: start, stop, or restart
cldb Starts, stops, or restarts the cldb service. Values: start, stop, suspend, resume, or restart
cluster The cluster on which to run the command.
fileserver Starts, stops, or restarts the fileserver service. Values: start, stop, suspend, resume, or restart
filter A filter specifying nodes on which to start or stop services. For fields to use with the filter, see the Fields table in the node page. See Filters for more information about filters.
Note: Either this or nodes is required.
name A service on which to perform an action specified by the action parameter. Any service can be specified with this option, but the following services can be specified only with the name option: collectd, elasticsearch, fluentd, grafana, historyserver, hivemeta, hoststats, hs2, httpfs, hue, kibana, nodemanager, opentsdb, oozie, and resourcemanager.
nfs Starts, stops, or restarts the nfs service. Values: start, stop, suspend, resume, or restart
nodes A list of node names, separated by spaces.
Note: Either this or filter is required.
zkconnect The ZooKeeper Connect String.

Examples

Start the NodeManager Service

maprcli node services -name nodemanager -nodes abc.sj.us -action start

Stop the ResourceManager Service

maprcli node services -name resourcemanager -nodes abc.sj.us -action stop

Stop the ResourceManager Service

maprcli node services -name resourcemanager -nodes abc.sj.us -action restart

Restart nfs server

maprcli node services -nodes abc.sj.us -nfs restart

Restart nfs server using a filter

Using a filter is common, especially in HBase environments, where full restarts of region and master servers are needed.

maprcli node services -filter ["csvc==nfs"] -nfs restart
Start the Hue Service
maprcli node services -name hue -action start -nodes <node n>

Restart the hoststats service

Restart the hoststats service after making changes to the MapR Metrics database. You do not need to restart warden.

maprcli node services -name hoststats -action restart -nodes <nodes>
 
OR
 
maprcli node services -name hoststats -action restart -filter '[csvc==hoststats]'