describeInstanceGroup

Query detailed information on instance group.

Parameters: String

• groupId: String. Instance group identification.

Return: InstanceGroupDetail

• groupId: String. Same as parameter groupId.
• role: InstanceGroupRole. Role of the instance group. master or contorl or core or task
• type: String. The instance type for each instance group. Each instance group has the same instance type.
• requestedInstanceCount: int. The number of instances created by the user request.
• runningInstanceCount: int. The number of instances created.
• status: Status.
  • state: StateCode. The current state of the instance group.
  • stateChangeReason: String. The reason for the state change.
  • timeline: Timeline. Each time point, 32-bit integer, expressed in seconds.
    • creationTime: int.
    • readyTime: int.
    • endTime: int.

Errors

• Internal server error.
• Parameter error.
• Insufficient permissions.