增加broker
增加2个broker，复制系数直接指定为3，指定原来的单机zook docker run -d --name kafka02 -p 9092:9092 -p 9999:9999 -e KAFKA_BROKER_ID=2 -e KAFKA_ZOOKEEPER_CONNECT=192.168.18.225:2181 -e KAFKA_ADVERTISED_HOST_NAME=192.168.18.249 -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://192.168.18.249:9092 -e KAFKA_LISTENERS=PLAINTEXT://0.0.0.0:9092 -e JMX_PORT=9999 -e KAFKA_DEFAULT_REPLICATION_FACTOR=3 -e KAFKA_JMX_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=192.168.18.249 -Dcom.sun.management.jmxremote.rmi.port=9999" wurstmeister/kafka:0.11.0.0 docker run -d --name kafka03 -p 9092:9092 -p 9999:9999 -e KAFKA_BROKER_ID=3 -e KAFKA_ZOOKEEPER_CONNECT=192.168.18.225:2181 -e KAFKA_ADVERTISED_HOST_NAME=192.168.21.166 -e KAFKA_ADVERTISED_LISTENERS=PLAINTEXT://192.168.21.166:9092 -e KAFKA_LISTENERS=PLAINTEXT://0.0.0.0:9092 -e JMX_PORT=9999 -e KAFKA_DEFAULT_REPLICATION_FACTOR=3 -e KAFKA_JMX_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.ssl=false -Djava.rmi.server.hostname=192.168.21.166 -Dcom.sun.management.jmxremote.rmi.port=9999" wurstmeister/kafka:0.11.0.0
调整__consumer_offset复制系数
提交偏移量都是往这个topic里写数据，如果这个topic复制系数=1，那这个broker挂了，消费者就无法提交偏移量。
# cat add_rep_consumer_offsets.json
{"version":1,
"partitions":[
{"topic":"__consumer_offsets","partition":0,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":1,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":2,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":3,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":4,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":5,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":6,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":7,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":8,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":9,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":10,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":11,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":12,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":13,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":14,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":15,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":16,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":17,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":18,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":19,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":20,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":21,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":22,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":23,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":24,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":25,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":26,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":27,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":28,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":29,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":30,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":31,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":32,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":33,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":34,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":35,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":36,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":37,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":38,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":39,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":40,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":41,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":42,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":43,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":44,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":45,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":46,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":47,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":48,"replicas":[1001,2,3]},
{"topic":"__consumer_offsets","partition":49,"replicas":[1001,2,3]}
]
}
./kafka-reassign-partitions.sh --zookeeper 192.168.18.225:2181 --reassignment-json-file add_rep_consumer_offsets.json --execute
Current partition replica assignment
{"version":1,"partitions":[{"topic":"__consumer_offsets","partition":22,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":30,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":8,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":21,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":4,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":27,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":7,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":9,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":46,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":25,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":35,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":41,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":33,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":23,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":49,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":47,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":16,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":28,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":31,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":36,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":42,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":3,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":18,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":37,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":15,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":24,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":38,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":17,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":48,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":19,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":11,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":13,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":2,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":43,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":6,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":14,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":20,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":0,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":44,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":39,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":12,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":45,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":1,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":5,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":26,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":29,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":34,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":10,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":32,"replicas":[1001],"log_dirs":["any"]},{"topic":"__consumer_offsets","partition":40,"replicas":[1001],"log_dirs":["any"]}]}
调整其他topic复制系数
调整后，可以在kafka manager里看到相关信息
修改生产者和消费者连接信息
改成连接3个broker的url
宕机测试
生产者和消费者在运行状态下，关掉原单机broker，查看生产消费是否正常，分区leader是否转移