Cluster details display detailed information about a cluster.

Detailed information is provided in the following areas: cluster, software, network, and host.

Cluster


Cluster
  • Name: The name of a cluster.
  • ID: The instance ID of a cluster.
  • Region: The region where a cluster is located.
  • Start Time: The time at which a cluster is created.
  • Software Configuration: Software configurations.
  • I/O Optimization: Whether the I/O optimization setting is enabled.
  • High Availability: Whether high-availability clusters are enabled.
  • Security Mode: Software in clusters is started in Kerberos secure mode. For more information about Kerberos, see Introduction to Kerberos.
  • Billing Method: Cluster billing method.
  • Current Status: For more information, see Cluster statuses.
  • Runtime: The time from the point of creation to the current time.
  • Bootstrap: The names, paths, and parameters of all configured bootstrap actions are listed here.
  • ECS Role: When your program runs on an E-MapReduce compute node, you can access the related Alibaba Cloud services, such OSS, without an AccessKey. E-MapReduce automatically requests a temporary AccessKey to authorize this access. The permission control of this temporary AccessKey is controlled by this role.

Software


Software
  • Main Version: The main version of E-MapReduce.
  • Cluster Type: The selected cluster type.
  • Software: All application programs installed are listed here with their versions, such as HDFS2.7.2, Hive 2.3.3, or Spark 2.3.1.

Network


Network
  • Region ID: The region where a cluster is located, such as cn-hangzhou-b, which is the same as ECS.
  • Network Type: The network type of a cluster.
  • Security Group ID: The ID of the security group that a cluster joined.
  • VPC/VSwitch: The VPC and VSwitch IDs of a cluster.

Host

  • Master Instance Group (Master): Configurations of all master nodes.
    Host
    • Hosts: The number of current nodes. During the creation process, the number of current nodes is less than the number of nodes you applied for until the creation is complete.
    • CPU: The number of cores in a node's CPU.
    • Memory: Memory capacity of a node.
    • Data Disk Type: Data disk type and capacity of a node.
    • ECS ID: The ID of the ECS instances purchased.
      Master Instance Group
    • Status: Includes Creating, Normal, Expanding, and Released.
    • Public IP : The public IP of master nodes.
    • Intranet IP: The internal network IP of the machine that can be accessed by all nodes in the cluster.
    • Created At: The creation time of the ECS instance purchased.
  • Core Instance Group (Core) : Configurations of all core nodes.
    Core Instance Group
    • Hosts: The number of current nodes. This is the same as the number of the nodes you applied for.
    • CPU: The number of cores in a node's CPU.
    • Memory: Memory capacity of a node.
    • Data Disk Type: Data disk type and capacity of a node.
    • ECS ID: The ID of the ECS instances purchased.
      Core Instance Group List
    • Status: Includes Creating, Normal, Expanding, and Released.
    • Intranet IP: The internal network IP of the machine that can be accessed by all nodes in the cluster.
    • Created At: The creation time of the ECS instance purchased.