kafka参数配置

Posted 2023-04-18

参考技术A

配置日志落在哪些磁盘

配置使用哪个zookeeper

注意 ，只需要在最后面追加一个/chroot即可

具体配置格式 协议名称,主机名称, 端口号 写法 protocol://hostname:port

这个是broker的全局配置，也可以在创建topic的时候 指定每个topic的配置，默认topic的配置覆盖broker的配置。

kafka使用的scale编写的，最终是通过jvm运行，所以需要设置jvm参数对kafka调优。kafka启动的时候会读取两个环境变量

kafka并不需要设置太多的OS参数，通常需要关注下面几个：

kafka配置参数详解

参考技术A

kafka的配置分为 broker、producter、consumer三个不同的配置

一 BROKER 的全局配置
最为核心的三个配置 broker.id、log.dir、zookeeper.connect 。

------------------------------------------- 系统 相关 -------------------------------------------

broker.id =1

log.dirs = /tmp/kafka-logs

port =6667

message.max.bytes =1000000

num.network.threads =3

num.io.threads =8

background.threads =4

queued.max.requests =500

host.name

advertised.host.name

advertised.port

socket.send.buffer.bytes =100*1024

socket.receive.buffer.bytes =100*1024

socket.request.max.bytes =100 1024 1024

------------------------------------------- LOG 相关 -------------------------------------------

log.segment.bytes =1024 1024 1024

log.roll.hours =24*7

log.cleanup.policy = delete

log.retention.minutes=7days

指定日志每隔多久检查看是否可以被删除，默认1分钟
log.cleanup.interval.mins=1

log.retention.bytes=-1

log.retention.check.interval.ms=5minutes

log.cleaner.enable=false

log.cleaner.threads =1

log.cleaner.io.max.bytes.per.second=None

log.cleaner.dedupe.buffer.size=500 1024 1024

log.cleaner.io.buffer.size=512*1024

log.cleaner.io.buffer.load.factor =0.9

log.cleaner.backoff.ms =15000

log.cleaner.min.cleanable.ratio=0.5

log.cleaner.delete.retention.ms =1day

log.index.size.max.bytes =10 1024 1024

log.index.interval.bytes =4096

log.flush.interval.messages=None

log.flush.scheduler.interval.ms =3000

log.flush.interval.ms = None

log.delete.delay.ms =60000

log.flush.offset.checkpoint.interval.ms =60000

------------------------------------------- TOPIC 相关 -------------------------------------------

auto.create.topics.enable =true

default.replication.factor =1

num.partitions =1

实例 --replication-factor3--partitions1--topic replicated-topic ：名称replicated-topic有一个分区，分区被复制到三个broker上。

----------------------------------复制(Leader、replicas) 相关 ----------------------------------

controller.socket.timeout.ms =30000

controller.message.queue.size=10

replica.lag.time.max.ms =10000

replica.lag.max.messages =4000

replica.socket.timeout.ms=30*1000

replica.socket.receive.buffer.bytes=64*1024

replica.fetch.max.bytes =1024*1024

replica.fetch.wait.max.ms =500

replica.fetch.min.bytes =1

num.replica.fetchers=1

replica.high.watermark.checkpoint.interval.ms =5000

controlled.shutdown.enable =false

controlled.shutdown.max.retries =3

controlled.shutdown.retry.backoff.ms =5000

auto.leader.rebalance.enable =false

leader.imbalance.per.broker.percentage =10

leader.imbalance.check.interval.seconds =300

offset.metadata.max.bytes

----------------------------------ZooKeeper 相关----------------------------------

zookeeper.connect = localhost:2181

zookeeper.session.timeout.ms=6000

zookeeper.connection.timeout.ms =6000

zookeeper.sync.time.ms =2000
配置的修改
其中一部分配置是可以被每个topic自身的配置所代替，例如
新增配置
bin/kafka-topics.sh --zookeeper localhost:2181--create --topic my-topic --partitions1--replication-factor1--config max.message.bytes=64000--config flush.messages=1

修改配置
bin/kafka-topics.sh --zookeeper localhost:2181--alter --topic my-topic --config max.message.bytes=128000

删除配置 ：
bin/kafka-topics.sh --zookeeper localhost:2181--alter --topic my-topic --deleteConfig max.message.bytes
二 CONSUMER 配置
最为核心的配置是group.id、zookeeper.connect

group.id

consumer.id

client.id = group id value

zookeeper.connect=localhost:2182

zookeeper.session.timeout.ms =6000

zookeeper.connection.timeout.ms =6000

zookeeper.sync.time.ms =2000

auto.offset.reset = largest

socket.timeout.ms=30*1000

socket.receive.buffer.bytes=64*1024

fetch.message.max.bytes =1024*1024

auto.commit.enable =true

auto.commit.interval.ms =60*1000

queued.max.message.chunks =10

rebalance.max.retries =4

rebalance.backoff.ms =2000

refresh.leader.backoff.ms

fetch.min.bytes =1

fetch.wait.max.ms =100

consumer.timeout.ms = -1

三 PRODUCER 的配置
比较核心的配置：metadata.broker.list、request.required.acks、producer.type、serializer.class

metadata.broker.list

request.required.acks =0

request.timeout.ms =10000

send.buffer.bytes=100*1024

key.serializer.class

partitioner.class=kafka.producer.DefaultPartitioner

compression.codec = none

compressed.topics=null

message.send.max.retries =3

retry.backoff.ms =100

topic.metadata.refresh.interval.ms =600*1000

client.id=""

------------------------------------------- 消息模式 相关 -------------------------------------------

producer.type=sync

queue.buffering.max.ms =5000

queue.buffering.max.messages =10000

queue.enqueue.timeout.ms = -1

batch.num.messages=200

serializer.class= kafka.serializer.DefaultEncoder