File: server.properties
broker.id=1
listeners=EXTERNAL://:9093,INTERNAL://:9092
advertised.listeners=INTERNAL://172.17.20.117:9092,EXTERNAL://52.80.79.248:9093
listener.security.protocol.map=INTERNAL:PLAINTEXT,EXTERNAL:PLAINTEXT
inter.broker.listener.name=INTERNAL
num.network.threads=3
num.io.threads=8