There are more AWS SDK examples available in the AWS Doc SDK Examples
Use DescribeCluster with an AWS SDK or CLI
The following code examples show how to use DescribeCluster.
Action examples are code excerpts from larger programs and must be run in context. You can see this action in context in the following code example:
- CLI
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- AWS CLI
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Command:
aws emr describe-cluster --cluster-id j-XXXXXXXXOutput:
For release-label based uniform instance groups cluster: { "Cluster": { "Status": { "Timeline": { "ReadyDateTime": 1436475075.199, "CreationDateTime": 1436474656.563, }, "State": "WAITING", "StateChangeReason": { "Message": "Waiting for steps to run" } }, "Ec2InstanceAttributes": { "ServiceAccessSecurityGroup": "sg-xxxxxxxx", "EmrManagedMasterSecurityGroup": "sg-xxxxxxxx", "IamInstanceProfile": "EMR_EC2_DefaultRole", "Ec2KeyName": "myKey", "Ec2AvailabilityZone": "us-east-1c", "EmrManagedSlaveSecurityGroup": "sg-yyyyyyyyy" }, "Name": "My Cluster", "ServiceRole": "EMR_DefaultRole", "Tags": [], "TerminationProtected": true, "UnhealthyNodeReplacement": true, "ReleaseLabel": "emr-4.0.0", "NormalizedInstanceHours": 96, "InstanceGroups": [ { "RequestedInstanceCount": 2, "Status": { "Timeline": { "ReadyDateTime": 1436475074.245, "CreationDateTime": 1436474656.564, "EndDateTime": 1436638158.387 }, "State": "RUNNING", "StateChangeReason": { "Message": "", } }, "Name": "CORE", "InstanceGroupType": "CORE", "Id": "ig-YYYYYYY", "Configurations": [], "InstanceType": "m3.large", "Market": "ON_DEMAND", "RunningInstanceCount": 2 }, { "RequestedInstanceCount": 1, "Status": { "Timeline": { "ReadyDateTime": 1436475074.245, "CreationDateTime": 1436474656.564, "EndDateTime": 1436638158.387 }, "State": "RUNNING", "StateChangeReason": { "Message": "", } }, "Name": "MASTER", "InstanceGroupType": "MASTER", "Id": "ig-XXXXXXXXX", "Configurations": [], "InstanceType": "m3.large", "Market": "ON_DEMAND", "RunningInstanceCount": 1 } ], "Applications": [ { "Name": "Hadoop" } ], "VisibleToAllUsers": true, "BootstrapActions": [], "MasterPublicDnsName": "ec2-54-147-144-78.compute-1.amazonaws.com", "AutoTerminate": false, "Id": "j-XXXXXXXX", "Configurations": [ { "Properties": { "fs.s3.consistent.retryPeriodSeconds": "20", "fs.s3.enableServerSideEncryption": "true", "fs.s3.consistent": "false", "fs.s3.consistent.retryCount": "2" }, "Classification": "emrfs-site" } ] } } For release-label based instance fleet cluster: { "Cluster": { "Status": { "Timeline": { "ReadyDateTime": 1487897289.705, "CreationDateTime": 1487896933.942 }, "State": "WAITING", "StateChangeReason": { "Message": "Waiting for steps to run" } }, "Ec2InstanceAttributes": { "EmrManagedMasterSecurityGroup": "sg-xxxxx", "RequestedEc2AvailabilityZones": [], "RequestedEc2SubnetIds": [], "IamInstanceProfile": "EMR_EC2_DefaultRole", "Ec2AvailabilityZone": "us-east-1a", "EmrManagedSlaveSecurityGroup": "sg-xxxxx" }, "Name": "My Cluster", "ServiceRole": "EMR_DefaultRole", "Tags": [], "TerminationProtected": false, "UnhealthyNodeReplacement": false, "ReleaseLabel": "emr-5.2.0", "NormalizedInstanceHours": 472, "InstanceCollectionType": "INSTANCE_FLEET", "InstanceFleets": [ { "Status": { "Timeline": { "ReadyDateTime": 1487897212.74, "CreationDateTime": 1487896933.948 }, "State": "RUNNING", "StateChangeReason": { "Message": "" } }, "ProvisionedSpotCapacity": 1, "Name": "MASTER", "InstanceFleetType": "MASTER", "LaunchSpecifications": { "SpotSpecification": { "TimeoutDurationMinutes": 60, "TimeoutAction": "TERMINATE_CLUSTER" } }, "TargetSpotCapacity": 1, "ProvisionedOnDemandCapacity": 0, "InstanceTypeSpecifications": [ { "BidPrice": "0.5", "InstanceType": "m3.xlarge", "WeightedCapacity": 1 } ], "Id": "if-xxxxxxx", "TargetOnDemandCapacity": 0 } ], "Applications": [ { "Version": "2.7.3", "Name": "Hadoop" } ], "ScaleDownBehavior": "TERMINATE_AT_INSTANCE_HOUR", "VisibleToAllUsers": true, "BootstrapActions": [], "MasterPublicDnsName": "ec2-xxx-xx-xxx-xx.compute-1.amazonaws.com", "AutoTerminate": false, "Id": "j-xxxxx", "Configurations": [] } } For ami based uniform instance group cluster: { "Cluster": { "Status": { "Timeline": { "ReadyDateTime": 1399400564.432, "CreationDateTime": 1399400268.62 }, "State": "WAITING", "StateChangeReason": { "Message": "Waiting for steps to run" } }, "Ec2InstanceAttributes": { "IamInstanceProfile": "EMR_EC2_DefaultRole", "Ec2AvailabilityZone": "us-east-1c" }, "Name": "My Cluster", "Tags": [], "TerminationProtected": true, "UnhealthyNodeReplacement": true, "RunningAmiVersion": "2.5.4", "InstanceGroups": [ { "RequestedInstanceCount": 1, "Status": { "Timeline": { "ReadyDateTime": 1399400558.848, "CreationDateTime": 1399400268.621 }, "State": "RUNNING", "StateChangeReason": { "Message": "" } }, "Name": "Master instance group", "InstanceGroupType": "MASTER", "InstanceType": "m1.small", "Id": "ig-ABCD", "Market": "ON_DEMAND", "RunningInstanceCount": 1 }, { "RequestedInstanceCount": 2, "Status": { "Timeline": { "ReadyDateTime": 1399400564.439, "CreationDateTime": 1399400268.621 }, "State": "RUNNING", "StateChangeReason": { "Message": "" } }, "Name": "Core instance group", "InstanceGroupType": "CORE", "InstanceType": "m1.small", "Id": "ig-DEF", "Market": "ON_DEMAND", "RunningInstanceCount": 2 } ], "Applications": [ { "Version": "1.0.3", "Name": "hadoop" } ], "BootstrapActions": [], "VisibleToAllUsers": false, "RequestedAmiVersion": "2.4.2", "LogUri": "s3://myLogUri/", "AutoTerminate": false, "Id": "j-XXXXXXXX" } }-
For API details, see DescribeCluster
in AWS CLI Command Reference.
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- Python
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- SDK for Python (Boto3)
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository
. def describe_cluster(cluster_id, emr_client): """ Gets detailed information about a cluster. :param cluster_id: The ID of the cluster to describe. :param emr_client: The Boto3 EMR client object. :return: The retrieved cluster information. """ try: response = emr_client.describe_cluster(ClusterId=cluster_id) cluster = response["Cluster"] logger.info("Got data for cluster %s.", cluster["Name"]) except ClientError: logger.exception("Couldn't get data for cluster %s.", cluster_id) raise else: return cluster-
For API details, see DescribeCluster in AWS SDK for Python (Boto3) API Reference.
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- SAP ABAP
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- SDK for SAP ABAP
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Note
There's more on GitHub. Find the complete example and learn how to set up and run in the AWS Code Examples Repository
. TRY. oo_result = lo_emr->describecluster( iv_clusterid = iv_cluster_id ). DATA(lo_cluster) = oo_result->get_cluster( ). DATA(lv_cluster_name) = lo_cluster->get_name( ). MESSAGE |Retrieved cluster information for { lv_cluster_name }| TYPE 'I'. CATCH /aws1/cx_emrinternalserverex INTO DATA(lo_internal_error). DATA(lv_error) = lo_internal_error->if_message~get_text( ). MESSAGE lv_error TYPE 'E'. CATCH /aws1/cx_emrinvalidrequestex INTO DATA(lo_invalid_error). lv_error = lo_invalid_error->if_message~get_text( ). MESSAGE lv_error TYPE 'E'. ENDTRY.-
For API details, see DescribeCluster in AWS SDK for SAP ABAP API reference.
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AddJobFlowSteps
DescribeStep