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
orfilter
- 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]'