What is a cluster in the FusionInsight system?

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A cluster is a computer technology that enables multiple servers to work as one server. It is deployed to improve the stability, reliability, and data processing or service capabilities of the system. For example, use of clusters helps prevent single point of failures (SPOFs), supports storage sharing and load sharing, and improves system performance.

Other related questions:
What is the FusionInsight cluster?
A cluster is a computer technology that enables multiple servers to work as one server. It is deployed to improve the stability, reliability, and data processing or service capabilities of the system. For example, use of clusters helps prevent single point of failures (SPOFs), supports storage sharing and load sharing, and improves system performance.

What are the requirements on host names in a FusionInsight cluster?
A host name can contain digits 0-9, letters a-z (lowercase and uppercase), and hyphens (-), but cannot contain only digits. The host name must be unique.

Definition of cluster in the FusionInsight system
A cluster is a computer technology that enables multiple servers to work as one server. It is deployed to improve the stability, reliability, and data processing or service capabilities of the system. For example, use of clusters helps prevent single point of failures (SPOFs), supports storage sharing and load sharing, and improves system performance.

Host naming rule in a FusionInsight cluster
A host name can contain digits 0-9, letters a-z (lowercase and uppercase), and hyphens (-), but cannot contain only digits. The host name must be unique.

Deployment principle of HDFS in a FusionInsight cluster
NameNodes and ZooKeeper Failover Controllers (ZKFCs) are deployed on two control nodes that work in active/standby mode. JournalNodes are deployed on at least three nodes and each node reserves a copy of backup data. It is recommended that at least three DataNodes be deployed on data nodes.

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