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 one 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 
/opt/mapr/bin/maprcli node services -h
 
  node services
        [ -cluster cluster name ]
        [ -filter node names filter. Please put it in quotes"" ]
        [ -zkconnect ZooKeeper Connect String: 'host:port,host:port,host:port,...' ]
        [ -nodes node names space separated ]
        [ -cldb managing cldb service: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -fileserver managing fileserver service: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -hbmaster managing hbprimary service: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -hbregionserver managing hbregionserver service: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -jobtracker managing jobtracker service: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -nfs managing nfs service: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -tasktracker managing tasktracker service: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -apiserver managing apiserver service: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -name service name to perform action on ]
        [ -action service action. One of: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -nfs4 managing nfs4 service: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -s3server managing s3server service: [start, stop, suspend, resume, restart, enable, disable] ]
        [ -keycloak managing keycloak service: [start, stop, suspend, resume, restart, enable, disable]]
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:
    • Start, stop, restart a service.
    • Disable a service to prevent it from starting when Warden restarts and enable a service to allow the service to start when Warden restarts.
    NOTE
    Suspend and resume are not supported.
  • 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, restart, enable, or disable
apiserver Starts, stops, or restarts the apiserver. Values: start, stop, restart, enable, or disable
cldb Starts, stops, or restarts the cldb service. Values: start, stop, suspend, resume, restart, enable, or disable
cluster The cluster on which to run the command.
fileserver Starts, stops, or restarts the fileserver service. Values: start, stop, suspend, resume, restart, enable, or disable
filter A filter specifying nodes on which to start or stop services. For fields to use with the filter, see the node table. See Filters for more information about filters.
NOTE
You must specify either the filter parameter or the nodes parameter.
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, restart, enable, or disable
nfs4 Starts, stops, or restarts the NFSv4 service. Values: start, stop, restart, enable, or disable
nodes A list of node names, separated by spaces.
NOTE
Either this or filter is required.
zkconnect The ZooKeeper Connect String.
s3server The parameter can be used to perform an action on the MOSS or s3server service that runs as part of a cluster or fabric. One of the action words, start, stop, suspend, resume, restart, enable, disable, must be used after the parameter to indicate the action to be taken with respect to the s3server service.
keycloak The parameter can be used to perform an action on the keycloak service. One of the action words, start, stop, suspend, resume, restart, enable, disable, must be used after the parameter to indicate the action to be taken with respect to the keycloak service.

Examples

Start the NodeManager Service

/opt/mapr/bin/maprcli node services -name nodemanager -nodes abc.sj.us -action start

Stop the ResourceManager Service

/opt/mapr/bin/maprcli node services -name resourcemanager -nodes abc.sj.us -action stop

Restart the ResourceManager Service

/opt/mapr/bin/maprcli node services -name resourcemanager -nodes abc.sj.us -action restart

Restart NFS4 server

/opt/mapr/bin/maprcli node services -nodes abc.sj.us -nfs4 restart

Restart NFS4 server using a filter

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

/opt/mapr/bin/maprcli node services -filter ["csvc==nfs"] -nfs4 restart
Start the Hue Service 
/opt/mapr/bin/maprcli node services -name hue -action start -nodes <node n>

Restart the hoststats service

Restart the hoststats service after making changes to the HPE Ezmeral Data Fabric Metrics database. You do not need to restart warden.

/opt/mapr/bin/maprcli node services -name hoststats -action restart -nodes <nodes>
 
OR
 
/opt/mapr/bin/maprcli node services -name hoststats -action restart -filter '[csvc==hoststats]'
Restart the MOSS service 
maprcli node services -nodes <host FQDN for node> -s3server restart
Stop the MOSS service 
maprcli node services -nodes <host FQDN for node> -s3server stop
Stop the keycloak service 
 maprcli node services -nodes <host FQDN for node> -keycloak stop