external kafka配置问题，如何让多个milvus集群共用一个kafka？

[yangyangdy]

下面是milvus中采用外部kafka服务的配置：
###################################

External kafka

- these configs are only used when externalKafka.enabled is true

- note that the following are just examples, you should confirm the

value of brokerList and mechanisms according to the actual external

Kafka configuration. E.g. If you select the AWS MSK, the configuration

should look something like this:

externalKafka:

enabled: true

brokerList: "xxxx:9096"

securityProtocol: SASL_SSL

sasl:

mechanisms: SCRAM-SHA-512

password: "xxx"

username: "xxx"

###################################
externalKafka:
enabled: false
brokerList: localhost:9092
securityProtocol: SASL_SSL
sasl:
mechanisms: PLAIN
username: ""
password: ""

如果我有三个milvus集群m1,m2,m3，希望共用一个kafka服务，在上面的配置中应该添加什么参数来满足要求？（我理解这块是多个milvus可能创建相同的topic引发冲突的问题）

[yhmo]

确认了，用这个配置项改：

milvus/configs/milvus.yaml

Line 759 in f094d02

cluster: by-dev

msgChannel:
  chanNamePrefix:
    # Root name prefix of the channel when a message channel is created.
    # It is recommended to change this parameter before starting Milvus for the first time.
    # To share a Pulsar instance among multiple Milvus instances, consider changing this to a name rather than the default one for each Milvus instance before you start them.
    cluster: by-dev

把三个集群的 msgChannel.chanNamePrefix.cluster 这项改成不同的名字，它们就会创建不同的topic，相互只间不会干扰。