Which object cannot be managed by Fusioninsight manager?

When deploying Fusioninsight HD, it is recommended to deploy at least a few FlumeServer nodes in the same cluster?

Fusioninsight HD preparations before installation, what steps are included? (Multiple choice)

Fusioninsight tool is a set of health detection tools provided for technical support engineers and maintenance engineers. It can check the health status of cluster-related nodes and services, discover potential problems in the cluster in advance, and generate health check reports. It is convenient for technical support engineers and maintenance engineers to quickly understand the health status of the system.

What is the default Block Size of HDFS in the Fusioninsight HD system?