Method: Aws::EMR::Client#list_instance_groups

Defined in:

lib/aws-sdk-emr/client.rb

#list_instance_groups(params = {}) ⇒ Types::ListInstanceGroupsOutput

Provides all available details about the instance groups in a cluster.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Request syntax with placeholder values

resp = client.list_instance_groups({
  cluster_id: "ClusterId", # required
  marker: "Marker",
})

Response structure

resp.instance_groups #=> Array
resp.instance_groups[0].id #=> String
resp.instance_groups[0].name #=> String
resp.instance_groups[0].market #=> String, one of "ON_DEMAND", "SPOT"
resp.instance_groups[0].instance_group_type #=> String, one of "MASTER", "CORE", "TASK"
resp.instance_groups[0].bid_price #=> String
resp.instance_groups[0].instance_type #=> String
resp.instance_groups[0].requested_instance_count #=> Integer
resp.instance_groups[0].running_instance_count #=> Integer
resp.instance_groups[0].status.state #=> String, one of "PROVISIONING", "BOOTSTRAPPING", "RUNNING", "RECONFIGURING", "RESIZING", "SUSPENDED", "TERMINATING", "TERMINATED", "ARRESTED", "SHUTTING_DOWN", "ENDED"
resp.instance_groups[0].status.state_change_reason.code #=> String, one of "INTERNAL_ERROR", "VALIDATION_ERROR", "INSTANCE_FAILURE", "CLUSTER_TERMINATED"
resp.instance_groups[0].status.state_change_reason.message #=> String
resp.instance_groups[0].status.timeline.creation_date_time #=> Time
resp.instance_groups[0].status.timeline.ready_date_time #=> Time
resp.instance_groups[0].status.timeline.end_date_time #=> Time
resp.instance_groups[0].configurations #=> Array
resp.instance_groups[0].configurations[0].classification #=> String
resp.instance_groups[0].configurations[0].configurations #=> Types::ConfigurationList
resp.instance_groups[0].configurations[0].properties #=> Hash
resp.instance_groups[0].configurations[0].properties["String"] #=> String
resp.instance_groups[0].configurations_version #=> Integer
resp.instance_groups[0].last_successfully_applied_configurations #=> Array
resp.instance_groups[0].last_successfully_applied_configurations[0].classification #=> String
resp.instance_groups[0].last_successfully_applied_configurations[0].configurations #=> Types::ConfigurationList
resp.instance_groups[0].last_successfully_applied_configurations[0].properties #=> Hash
resp.instance_groups[0].last_successfully_applied_configurations[0].properties["String"] #=> String
resp.instance_groups[0].last_successfully_applied_configurations_version #=> Integer
resp.instance_groups[0].ebs_block_devices #=> Array
resp.instance_groups[0].ebs_block_devices[0].volume_specification.volume_type #=> String
resp.instance_groups[0].ebs_block_devices[0].volume_specification.iops #=> Integer
resp.instance_groups[0].ebs_block_devices[0].volume_specification.size_in_gb #=> Integer
resp.instance_groups[0].ebs_block_devices[0].volume_specification.throughput #=> Integer
resp.instance_groups[0].ebs_block_devices[0].device #=> String
resp.instance_groups[0].ebs_optimized #=> Boolean
resp.instance_groups[0].shrink_policy.decommission_timeout #=> Integer
resp.instance_groups[0].shrink_policy.instance_resize_policy.instances_to_terminate #=> Array
resp.instance_groups[0].shrink_policy.instance_resize_policy.instances_to_terminate[0] #=> String
resp.instance_groups[0].shrink_policy.instance_resize_policy.instances_to_protect #=> Array
resp.instance_groups[0].shrink_policy.instance_resize_policy.instances_to_protect[0] #=> String
resp.instance_groups[0].shrink_policy.instance_resize_policy.instance_termination_timeout #=> Integer
resp.instance_groups[0].auto_scaling_policy.status.state #=> String, one of "PENDING", "ATTACHING", "ATTACHED", "DETACHING", "DETACHED", "FAILED"
resp.instance_groups[0].auto_scaling_policy.status.state_change_reason.code #=> String, one of "USER_REQUEST", "PROVISION_FAILURE", "CLEANUP_FAILURE"
resp.instance_groups[0].auto_scaling_policy.status.state_change_reason.message #=> String
resp.instance_groups[0].auto_scaling_policy.constraints.min_capacity #=> Integer
resp.instance_groups[0].auto_scaling_policy.constraints.max_capacity #=> Integer
resp.instance_groups[0].auto_scaling_policy.rules #=> Array
resp.instance_groups[0].auto_scaling_policy.rules[0].name #=> String
resp.instance_groups[0].auto_scaling_policy.rules[0].description #=> String
resp.instance_groups[0].auto_scaling_policy.rules[0].action.market #=> String, one of "ON_DEMAND", "SPOT"
resp.instance_groups[0].auto_scaling_policy.rules[0].action.simple_scaling_policy_configuration.adjustment_type #=> String, one of "CHANGE_IN_CAPACITY", "PERCENT_CHANGE_IN_CAPACITY", "EXACT_CAPACITY"
resp.instance_groups[0].auto_scaling_policy.rules[0].action.simple_scaling_policy_configuration.scaling_adjustment #=> Integer
resp.instance_groups[0].auto_scaling_policy.rules[0].action.simple_scaling_policy_configuration.cool_down #=> Integer
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.comparison_operator #=> String, one of "GREATER_THAN_OR_EQUAL", "GREATER_THAN", "LESS_THAN", "LESS_THAN_OR_EQUAL"
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.evaluation_periods #=> Integer
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.metric_name #=> String
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.namespace #=> String
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.period #=> Integer
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.statistic #=> String, one of "SAMPLE_COUNT", "AVERAGE", "SUM", "MINIMUM", "MAXIMUM"
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.threshold #=> Float
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.unit #=> String, one of "NONE", "SECONDS", "MICRO_SECONDS", "MILLI_SECONDS", "BYTES", "KILO_BYTES", "MEGA_BYTES", "GIGA_BYTES", "TERA_BYTES", "BITS", "KILO_BITS", "MEGA_BITS", "GIGA_BITS", "TERA_BITS", "PERCENT", "COUNT", "BYTES_PER_SECOND", "KILO_BYTES_PER_SECOND", "MEGA_BYTES_PER_SECOND", "GIGA_BYTES_PER_SECOND", "TERA_BYTES_PER_SECOND", "BITS_PER_SECOND", "KILO_BITS_PER_SECOND", "MEGA_BITS_PER_SECOND", "GIGA_BITS_PER_SECOND", "TERA_BITS_PER_SECOND", "COUNT_PER_SECOND"
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.dimensions #=> Array
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.dimensions[0].key #=> String
resp.instance_groups[0].auto_scaling_policy.rules[0].trigger.cloud_watch_alarm_definition.dimensions[0].value #=> String
resp.instance_groups[0].custom_ami_id #=> String
resp.marker #=> String

Parameters:

• params (Hash) (defaults to: {}) —

  ({})

Options Hash (params):

• :cluster_id (required, String) —

  The identifier of the cluster for which to list the instance groups.

• :marker (String) —

  The pagination token that indicates the next set of results to retrieve.

Returns:

• (Types::ListInstanceGroupsOutput) —

  Returns a response object which responds to the following methods:

  • #instance_groups => Array<Types::InstanceGroup>

  • #marker => String

See Also:

• AWS API Documentation

# File 'lib/aws-sdk-emr/client.rb', line 2417

def list_instance_groups(params = {}, options = {})
  req = build_request(:list_instance_groups, params)
  req.send_request(options)
end