Help Center > > User Guide> Managing Active Clusters> Viewing and Monitoring Clusters> Viewing Basic Information About an Active Cluster

Viewing Basic Information About an Active Cluster

Updated at: Nov 08, 2019 GMT+08:00

After clusters are created, you can monitor and manage clusters. Choose Clusters > Active Clusters. Select a cluster and click its name to switch to the cluster details page. Click Cluster Details to view information about a cluster such as the configurations, deployed nodes, and other basic information.

You can monitor and manage the clusters you create. Choose Clusters > Active Clusters. Select a cluster and click its name to go to the cluster details page. On the page, view the basic configuration and node information of the cluster.

On the cluster details page, click Dashboard. Table 1 describes the parameters on the Dashboard page.

Table 1 Basic information

Parameter

Description

Cluster Name

Cluster name

This parameter is set when a cluster is created.

Cluster Status

Status of a cluster

Cluster Manager

Click View, the MRS Manager page is displayed only after you bind an EIP and add a security group rule as prompted. For details, see Accessing MRS Manager.

Billing Mode

Billing mode of a cluster

Currently, Yearly/Monthly and Pay-per-use are supported.

Cluster Version

MRS version

Currently, MRS 1.8.7, MRS 2.0.1 and MRS 2.0.3 are supported.

This parameter is set when a cluster is created.

Cluster Type

MRS provides three types of clusters:
  • Analysis cluster: is used for offline data analysis and provides Hadoop components.
  • Streaming cluster: is used for streaming tasks and provides stream processing components.
  • Hybrid cluster: is used for both offline data analysis and streaming processing and provides Hadoop components and streaming processing components. (MRS 1.8.5 or later supports hybrid clusters.)

This parameter is set when a cluster is created.

IAM User Sync

IAM user information can be synchronized to an MRS cluster for cluster management. For details, see Synchronizing IAM Users to MRS.

NOTE:

The Components, Tenants and Backups & Restorations tabs will be displayed on the cluster details page after IAM user synchronization.

Cluster ID

Unique identifier of a cluster

This parameter is automatically assigned when a cluster is created.

Created

Time when MRS starts charging MRS clusters of the customer

Order ID

Order ID for purchasing the cluster. This parameter is displayed only when Billing Mode is set to Yearly/Monthly.

AZ

AZ of the region in the cluster.

This parameter is set when a cluster is created.

VPC

VPC information

This parameter is set when a cluster is created.

A VPC is a secure, isolated, and logical network environment.

Subnet

Subnet information

This parameter is set when a cluster is created.

A subnet provides dedicated network resources that are isolated from other networks, improving network security.

Data Connection

Click View to view the type of the data connection associated with the cluster. For details, see Managing Data Connections.

EIP

After binding an EIP to an MRS cluster, you can use the EIP to access the MRS Manager page of the cluster.

OBS Permission Control

Click Modify to modify the mapping between the MRS user and OBS permission. For details, see Configuring Fine-Grained Permissions for MRS Multi-User Access to OBS.

Key Pair

Key pair name

This parameter is set when a cluster is created.

This parameter is not displayed if you set Login Mode to Password.

Enterprise Project

Enterprise project to which a cluster belongs. Only on the Active Clusters page, you can click the name of an enterprise project to go to its Enterprise Project Management page.

Kerberos Authentication

Whether to enable Kerberos authentication when logging in to MRS Manager.

Logging

Whether the tenant has enabled the log collection function.

Security Group

Security group name of the cluster

Streaming Core Node LVM

Indicates whether to enable the Logical Volume Manager (LVM) function of streaming Core nodes.

Data Disk Key Name

Name of the key used to encrypt data disks. To manage the used keys, log in to the key management console.

Data Disk Key ID

Key ID used to encrypt data disks

Table 2 Component information

Parameter

Description

Hadoop Version

Hadoop version

Spark Version

Spark version

Only a Spark cluster displays this version. Because Spark and Hive must be used together, Spark and Hive versions are displayed at the same time.

HBase Version

HBase version

Only an HBase cluster displays this version.

Hive Version

Hive version

Only a Hive cluster displays this version.

Hue Version

Hue version

Loader Version

Loader Version

Kafka Version

Kafka Version

Storm Version

Storm Version

Flume Version

Flume Version

Tez Version

Tez version.

Presto Version

Presto version.

KafkaManager Version

KafkaManager version.

Opentsdb Version

Opentsdb version.

Flink Version

Flink version.

On the MRS cluster details page, click Nodes. For details about the node parameters, see Table 3.

Table 3 Node information

Parameter

Description

Configure Task Node

Used to add Task nodes. For details, see Related Tasks in Manually Scaling Out a Cluster.

Node Group

Name of a node group

Node

Name of a node

On the Nodes tab page, click next to a node group name to unfold the nodes contained in the node group. Click a node name to remotely log in to the ECS using the password or key pair configured during cluster creation.

IP

IP address of a node

Status

Status of a node

Flavor

ECS flavor used by a node

Specifications

Instance specification of a node, which is determined by CPUs, memory, and disk space.

NOTE:

More advanced instance specifications provide better data processing. However, they require higher cluster cost.

Node Type

Node type:

  • Master: A Master node in an MRS cluster manages the cluster, assigns cluster executable files to Core nodes, traces the execution status of each job, and monitors the DataNode running status.
  • Core: A Core node in a cluster processes data and stores process data in HDFS. For an analysis cluster, Analysis Core is displayed. For a streaming cluster, Streaming Core is displayed. For a hybrid cluster, Analysis Core and Streaming Core are displayed.
  • Task: A Task node in a cluster is used for computing and does not store persistent data. Task nodes are optional, and the number of Task nodes can be zero. For an analysis cluster, Analysis Task is displayed. For a streaming cluster, Streaming Task is displayed. For a hybrid cluster, Analysis Task and Streaming Task are displayed.

Node Count

Number of nodes in a node group

Operation

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