Comparing Single-node and Cluster Kafka Instances

A single-node Kafka instance has only one broker. These instances do not guarantee performance or reliability and are for trial use or testing only. In the production environment, use cluster instances.

Single-node Kafka instances are available only in CN East-Shanghai1 and CN South-Guangzhou regions.

Parameters for Purchase

Parameter settings that are unique to single-node instances are listed in Table 1.

**Table 1** Parameters of a single-node instance
Parameter	Description
AZ	Only one AZ
Version	Only v2.7
Broker Flavor	kafka.2u4g.single.small and kafka.2u4g.single
Brokers	Only one
Storage space per broker	Disk type: high I/O and ultra-high I/O; Disk size: 100–10,000 GB
Ciphertext Access	Not supported

Comparing Instance Functions

Table 2 compares the functions of single-node and cluster instances.

**Table 2** Comparing functions
Function	Single-node Instance	Cluster Instance
Modifying instance specifications	×	√
Changing the instance access mode	Only enabling/disabling public plaintext access	Options: Enabling private ciphertext access Enabling/Disabling private plaintext access Enabling/Disabling public plaintext access Enabling/Disabling public ciphertext access
Resetting Kafka password	×	√
Viewing disk usage	×	√
Reassigning partitions	×	√
Configuring topic permissions	×	√
Managing users	×	√
Viewing rebalancing logs	×	√
Smart Connect	×	√
Managing Kafka quotas	×	√
Modifying configuration parameters	×	√