啟動 kafka 集群， 出現這個問題
WARN Connection to node 2 could not be established. Broker may not be available. (
vi config/server.properties 修改下面的"your local host"為自己的host
listeners = PLAINTEXT://your.local.host:9092
2、修改 /etc/hostname
改為所需要的hostname
WARN Connection to node 2 could not be established. Broker may not be available. (
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