# Service Resources Service resources are services of a Hadoop cluster (e.g. HDFS, MapReduce and Ganglia). Service resources are sub-resources of clusters. ###API Summary - [List services](services.md) - [View service information](services-service.md) - [Create service](create-service.md) - [Update services](update-services.md) - [Update service](update-service.md) ###Properties

Property	Description
ServiceInfo/service_name	The service name
ServiceInfo/cluster_name	The parent cluster name
ServiceInfo/state	The current state of the service
ServiceInfo/desired_configs	The desired configurations

###States The current state of a service resource can be determined by looking at the ServiceInfo/state property. GET api/v1/clusters/c1/services/HDFS?fields=ServiceInfo/state 200 OK { "href" : "http://your.ambari.server/api/v1/clusters/c1/services/HDFS?fields=ServiceInfo/state", "ServiceInfo" : { "cluster_name" : "c1", "state" : "INSTALLED", "service_name" : "HDFS" } } The following table lists the possible values of the service resource ServiceInfo/state property.

State	Description
INIT	The initial clean state after the service is first created.
INSTALLING	In the process of installing the service.
INSTALL_FAILED	The service install failed.
INSTALLED	The service has been installed successfully but is not currently running.
STARTING	In the process of starting the service.
STARTED	The service has been installed and started.
STOPPING	In the process of stopping the service.
UNINSTALLING	In the process of uninstalling the service.
UNINSTALLED	The service has been successfully uninstalled.
WIPING_OUT	In the process of wiping out the installed service.
UPGRADING	In the process of upgrading the service.
MAINTENANCE	The service has been marked for maintenance.
UNKNOWN	The service state can not be determined.

###Starting a Service A service can be started through the API by setting its state to be STARTED (see [update service](update-service.md)). ###Stopping a Service A service can be stopped through the API by setting its state to be INSTALLED (see [update service](update-service.md)).