kafka配置文件注解
若advertised.host.name的值是aa,则kafka发布的服务名也要是aa
kafka
log.cleanup.policy=delete 日志清理策略 log.retention.hours=168 (即7天) 数据存储的最大时间超过这个时间会根据log.cleanup.policy设置的策略处理数据,也就是消费端能够多久去消费数据 log.retention.bytes和log.retention.minutes任意一个达到要求,都会执行删除 log.retention.bytes=-1 topic每个分区的最大文件大小 一个topic的大小限制=分区数*log.retention.bytes -1表示没有大小限制 log.retention.check.interval.ms=5minutes 文件大小检查的周期时间
/* 自动确认offset的时间间隔 */ props.put("auto.commit.interval.ms", "1000"); props.put("session.timeout.ms", "30000"); //消息发送的最长等待时间.需大于session.timeout.ms这个时间 props.put("request.timeout.ms", "40000"); //一次从kafka中poll出来的数据条数 //max.poll.records条数据需要在在session.timeout.ms这个时间内处理完 props.put("max.poll.records","100"); //server发送到消费端的最小数据,若是不满足这个数值则会等待直到满足指定大小。默认为1表示立即接收。 props.put("fetch.min.bytes", "1"); //若是不满足fetch.min.bytes时,等待消费端请求的最长等待时间 props.put("fetch.wait.max.ms", "1000");
参数配置:https://my.oschina.net/infiniteSpace/blog/312890?p=1
server.properties中所有配置参数说明(解释)如下列表: 参数 说明(解释) broker.id =0 每一个broker在集群中的唯一表示,要求是正数。当该服务器的IP地址发生改变时,broker.id没有变化,则不会影响consumers的消息情况 log.dirs=/data/kafka-logs kafka数据的存放地址,多个地址的话用逗号分割 /data/kafka-logs-1,/data/kafka-logs-2 port =9092 broker server服务端口 message.max.bytes =6525000 表示消息体的最大大小,单位是字节 num.network.threads =4 broker处理消息的最大线程数,一般情况下不需要去修改 num.io.threads =8 broker处理磁盘IO的线程数,数值应该大于你的硬盘数 background.threads =4 一些后台任务处理的线程数,例如过期消息文件的删除等,一般情况下不需要去做修改 queued.max.requests =500 等待IO线程处理的请求队列最大数,若是等待IO的请求超过这个数值,那么会停止接受外部消息,应该是一种自我保护机制。 host.name broker的主机地址,若是设置了,那么会绑定到这个地址上,若是没有,会绑定到所有的接口上,并将其中之一发送到ZK,一般不设置 socket.send.buffer.bytes=100*1024 socket的发送缓冲区,socket的调优参数SO_SNDBUFF socket.receive.buffer.bytes =100*1024 socket的接受缓冲区,socket的调优参数SO_RCVBUFF socket.request.max.bytes =100*1024*1024 socket请求的最大数值,防止serverOOM,message.max.bytes必然要小于socket.request.max.bytes,会被topic创建时的指定参数覆盖 log.segment.bytes =1024*1024*1024 topic的分区是以一堆segment文件存储的,这个控制每个segment的大小,会被topic创建时的指定参数覆盖 log.roll.hours =24*7 这个参数会在日志segment没有达到log.segment.bytes设置的大小,也会强制新建一个segment会被 topic创建时的指定参数覆盖 log.cleanup.policy = delete 日志清理策略选择有:delete和compact主要针对过期数据的处理,或是日志文件达到限制的额度,会被 topic创建时的指定参数覆盖 log.retention.minutes=3days 数据存储的最大时间超过这个时间会根据log.cleanup.policy设置的策略处理数据,也就是消费端能够多久去消费数据 log.retention.bytes和log.retention.minutes任意一个达到要求,都会执行删除,会被topic创建时的指定参数覆盖 log.retention.bytes=-1 topic每个分区的最大文件大小,一个topic的大小限制 = 分区数*log.retention.bytes。-1没有大小限log.retention.bytes和log.retention.minutes任意一个达到要求,都会执行删除,会被topic创建时的指定参数覆盖 log.retention.check.interval.ms=5minutes 文件大小检查的周期时间,是否处罚 log.cleanup.policy中设置的策略 log.cleaner.enable=false 是否开启日志压缩 log.cleaner.threads = 2 日志压缩运行的线程数 log.cleaner.io.max.bytes.per.second=None 日志压缩时候处理的最大大小 log.cleaner.dedupe.buffer.size=500*1024*1024 日志压缩去重时候的缓存空间,在空间允许的情况下,越大越好 log.cleaner.io.buffer.size=512*1024 日志清理时候用到的IO块大小一般不需要修改 log.cleaner.io.buffer.load.factor =0.9 日志清理中hash表的扩大因子一般不需要修改 log.cleaner.backoff.ms =15000 检查是否处罚日志清理的间隔 log.cleaner.min.cleanable.ratio=0.5 日志清理的频率控制,越大意味着更高效的清理,同时会存在一些空间上的浪费,会被topic创建时的指定参数覆盖 log.cleaner.delete.retention.ms =1day 对于压缩的日志保留的最长时间,也是客户端消费消息的最长时间,同log.retention.minutes的区别在于一个控制未压缩数据,一个控制压缩后的数据。会被topic创建时的指定参数覆盖 log.index.size.max.bytes =10*1024*1024 对于segment日志的索引文件大小限制,会被topic创建时的指定参数覆盖 log.index.interval.bytes =4096 当执行一个fetch操作后,需要一定的空间来扫描最近的offset大小,设置越大,代表扫描速度越快,但是也更好内存,一般情况下不需要搭理这个参数 log.flush.interval.messages=None log文件”sync”到磁盘之前累积的消息条数,因为磁盘IO操作是一个慢操作,但又是一个”数据可靠性"的必要手段,所以此参数的设置,需要在"数据可靠性"与"性能"之间做必要的权衡.如果此值过大,将会导致每次"fsync"的时间较长(IO阻塞),如果此值过小,将会导致"fsync"的次数较多,这也意味着整体的client请求有一定的延迟.物理server故障,将会导致没有fsync的消息丢失. log.flush.scheduler.interval.ms =3000 检查是否需要固化到硬盘的时间间隔 log.flush.interval.ms = None 仅仅通过interval来控制消息的磁盘写入时机,是不足的.此参数用于控制"fsync"的时间间隔,如果消息量始终没有达到阀值,但是离上一次磁盘同步的时间间隔达到阀值,也将触发. log.delete.delay.ms =60000 文件在索引中清除后保留的时间一般不需要去修改 log.flush.offset.checkpoint.interval.ms =60000 控制上次固化硬盘的时间点,以便于数据恢复一般不需要去修改 auto.create.topics.enable =true 是否允许自动创建topic,若是false,就需要通过命令创建topic default.replication.factor =1 是否允许自动创建topic,若是false,就需要通过命令创建topic num.partitions =1 每个topic的分区个数,若是在topic创建时候没有指定的话会被topic创建时的指定参数覆盖 以下是kafka中Leader,replicas配置参数 controller.socket.timeout.ms =30000 partition leader与replicas之间通讯时,socket的超时时间 controller.message.queue.size=10 partition leader与replicas数据同步时,消息的队列尺寸 replica.lag.time.max.ms =10000 replicas响应partition leader的最长等待时间,若是超过这个时间,就将replicas列入ISR(in-sync replicas),并认为它是死的,不会再加入管理中 replica.lag.max.messages =4000 如果follower落后与leader太多,将会认为此follower[或者说partition relicas]已经失效 ##通常,在follower与leader通讯时,因为网络延迟或者链接断开,总会导致replicas中消息同步滞后 ##如果消息之后太多,leader将认为此follower网络延迟较大或者消息吞吐能力有限,将会把此replicas迁移 ##到其他follower中. ##在broker数量较少,或者网络不足的环境中,建议提高此值. replica.socket.timeout.ms=30*1000 follower与leader之间的socket超时时间 replica.socket.receive.buffer.bytes=64*1024 leader复制时候的socket缓存大小 replica.fetch.max.bytes =1024*1024 replicas每次获取数据的最大大小 replica.fetch.wait.max.ms =500 replicas同leader之间通信的最大等待时间,失败了会重试 replica.fetch.min.bytes =1 fetch的最小数据尺寸,如果leader中尚未同步的数据不足此值,将会阻塞,直到满足条件 num.replica.fetchers=1 leader进行复制的线程数,增大这个数值会增加follower的IO replica.high.watermark.checkpoint.interval.ms =5000 每个replica检查是否将最高水位进行固化的频率 controlled.shutdown.enable =false 是否允许控制器关闭broker ,若是设置为true,会关闭所有在这个broker上的leader,并转移到其他broker controlled.shutdown.max.retries =3 控制器关闭的尝试次数 controlled.shutdown.retry.backoff.ms =5000 每次关闭尝试的时间间隔 leader.imbalance.per.broker.percentage =10 leader的不平衡比例,若是超过这个数值,会对分区进行重新的平衡 leader.imbalance.check.interval.seconds =300 检查leader是否不平衡的时间间隔 offset.metadata.max.bytes 客户端保留offset信息的最大空间大小 kafka中zookeeper参数配置 zookeeper.connect = localhost:2181 zookeeper集群的地址,可以是多个,多个之间用逗号分割 hostname1:port1,hostname2:port2,hostname3:port3 zookeeper.session.timeout.ms=6000 ZooKeeper的最大超时时间,就是心跳的间隔,若是没有反映,那么认为已经死了,不易过大 zookeeper.connection.timeout.ms =6000 ZooKeeper的连接超时时间 zookeeper.sync.time.ms =2000 ZooKeeper集群中leader和follower之间的同步实际那
参数配置介绍:http://blog.csdn.net/lizhitao/article/details/25667831
参数 | 说明(解释) |
broker.id =0 | 每一个broker在集群中的唯一表示,要求是正数。当该服务器的IP地址发生改变时,broker.id没有变化,则不会影响consumers的消息情况 |
log.dirs=/data/kafka-logs | kafka数据的存放地址,多个地址的话用逗号分割,多个目录分布在不同磁盘上可以提高读写性能 /data/kafka-logs-1,/data/kafka-logs-2 |
port =9092 | broker server服务端口 |
message.max.bytes =6525000 | 表示消息体的最大大小,单位是字节 |
num.network.threads =4 | broker处理消息的最大线程数,一般情况下数量为cpu核数 |
num.io.threads =8 | broker处理磁盘IO的线程数,数值为cpu核数2倍 |
background.threads =4 | 一些后台任务处理的线程数,例如过期消息文件的删除等,一般情况下不需要去做修改 |
queued.max.requests =500 | 等待IO线程处理的请求队列最大数,若是等待IO的请求超过这个数值,那么会停止接受外部消息,应该是一种自我保护机制。 |
host.name | broker的主机地址,若是设置了,那么会绑定到这个地址上,若是没有,会绑定到所有的接口上,并将其中之一发送到ZK,一般不设置 |
socket.send.buffer.bytes=100*1024 | socket的发送缓冲区,socket的调优参数SO_SNDBUFF |
socket.receive.buffer.bytes =100*1024 | socket的接受缓冲区,socket的调优参数SO_RCVBUFF |
socket.request.max.bytes =100*1024*1024 | socket请求的最大数值,防止serverOOM,message.max.bytes必然要小于socket.request.max.bytes,会被topic创建时的指定参数覆盖 |
log.segment.bytes =1024*1024*1024 | topic的分区是以一堆segment文件存储的,这个控制每个segment的大小,会被topic创建时的指定参数覆盖 |
log.roll.hours =24*7 | 这个参数会在日志segment没有达到log.segment.bytes设置的大小,也会强制新建一个segment会被 topic创建时的指定参数覆盖 |
log.retention.minutes=300或者log.retention.hours=24 | 数据文件保留多长时间,存储的最大时间超过这个时间会根据log.cleanup.policy设置数据清除策略。 log.retention.bytes和log.retention.minutes或log.retention.hours任意一个达到要求,都会执行删除。 |
log.cleanup.policy = delete | 日志清理策略选择有:delete和compact主要针对过期数据的处理,或是日志文件达到限制的额度,会被 topic创建时的指定参数覆盖 |
log.retention.bytes=-1 | topic每个分区的最大文件大小,一个topic的大小限制 = 分区数*log.retention.bytes。-1没有大小限log.retention.bytes和log.retention.minutes任意一个达到要求,都会执行删除,会被topic创建时的指定参数覆盖 |
log.retention.check.interval.ms=5minutes | 文件大小检查的周期时间,是否处罚 log.cleanup.policy中设置的策略 |
log.cleaner.enable=false | 是否开启日志清理 |
log.cleaner.threads = 2 | 日志清理运行的线程数 |
log.cleaner.io.max.bytes.per.second=None | 日志清理时候处理的最大大小 |
log.cleaner.dedupe.buffer.size=500*1024*1024 | 日志清理去重时候的缓存空间,在空间允许的情况下,越大越好 |
log.cleaner.io.buffer.size=512*1024 | 日志清理时候用到的IO块大小一般不需要修改 |
log.cleaner.io.buffer.load.factor =0.9 | 日志清理中hash表的扩大因子一般不需要修改 |
log.cleaner.backoff.ms =15000 | 检查是否处罚日志清理的间隔 |
log.cleaner.min.cleanable.ratio=0.5 | 日志清理的频率控制,越大意味着更高效的清理,同时会存在一些空间上的浪费,会被topic创建时的指定参数覆盖 |
log.cleaner.delete.retention.ms =1day | 对于压缩的日志保留的最长时间,也是客户端消费消息的最长时间,同log.retention.minutes的区别在于一个控制未压缩数据,一个控制压缩后的数据。会被topic创建时的指定参数覆盖 |
log.index.size.max.bytes =10*1024*1024 | 对于segment日志的索引文件大小限制,会被topic创建时的指定参数覆盖 |
log.index.interval.bytes =4096 | 当执行一个fetch操作后,需要一定的空间来扫描最近的offset大小,设置越大,代表扫描速度越快,但是也更好内存,一般情况下不需要搭理这个参数 |
log.flush.interval.messages=None 例如log.flush.interval.messages=1000 |
log文件”sync”到磁盘之前累积的消息条数,因为磁盘IO操作是一个慢操作,但又是一个”数据可靠性"的必要手段,所以此参数的设置,需要在"数据可靠性"与"性能"之间做必要的权衡.如果此值过大,将会导致每次"fsync"的时间较长(IO阻塞),如果此值过小,将会导致"fsync"的次数较多,这也意味着整体的client请求有一定的延迟.物理server故障,将会导致没有fsync的消息丢失. |
log.flush.scheduler.interval.ms =3000 | 检查是否需要固化到硬盘的时间间隔 |
log.flush.interval.ms = None 例如:log.flush.interval.ms=1000 表示每间隔1000毫秒flush一次数据到磁盘 |
仅仅通过interval来控制消息的磁盘写入时机,是不足的.此参数用于控制"fsync"的时间间隔,如果消息量始终没有达到阀值,但是离上一次磁盘同步的时间间隔达到阀值,也将触发. |
log.delete.delay.ms =60000 | 文件在索引中清除后保留的时间一般不需要去修改 |
log.flush.offset.checkpoint.interval.ms =60000 | 控制上次固化硬盘的时间点,以便于数据恢复一般不需要去修改 |
auto.create.topics.enable =true | 是否允许自动创建topic,若是false,就需要通过命令创建topic |
default.replication.factor =1 | 是否允许自动创建topic,若是false,就需要通过命令创建topic |
num.partitions =1 | 每个topic的分区个数,若是在topic创建时候没有指定的话会被topic创建时的指定参数覆盖 |
以下是kafka中Leader,replicas配置参数 | |
controller.socket.timeout.ms =30000 | partition leader与replicas之间通讯时,socket的超时时间 |
controller.message.queue.size=10 | partition leader与replicas数据同步时,消息的队列尺寸 |
replica.lag.time.max.ms =10000 | replicas响应partition leader的最长等待时间,若是超过这个时间,就将replicas列入ISR(in-sync replicas),并认为它是死的,不会再加入管理中 |
replica.lag.max.messages =4000 | 如果follower落后与leader太多,将会认为此follower[或者说partition relicas]已经失效 ##通常,在follower与leader通讯时,因为网络延迟或者链接断开,总会导致replicas中消息同步滞后 ##到其他follower中.##在broker数量较少,或者网络不足的环境中,建议提高此值. ##如果消息之后太多,leader将认为此follower网络延迟较大或者消息吞吐能力有限,将会把此replicas迁移 |
replica.socket.timeout.ms=30*1000 | follower与leader之间的socket超时时间 |
replica.socket.receive.buffer.bytes=64*1024 | leader复制时候的socket缓存大小 |
replica.fetch.max.bytes =1024*1024 | replicas每次获取数据的最大大小 |
replica.fetch.wait.max.ms =500 | replicas同leader之间通信的最大等待时间,失败了会重试 |
replica.fetch.min.bytes =1 | fetch的最小数据尺寸,如果leader中尚未同步的数据不足此值,将会阻塞,直到满足条件 |
num.replica.fetchers=1 | leader进行复制的线程数,增大这个数值会增加follower的IO |
replica.high.watermark.checkpoint.interval.ms =5000 | 每个replica检查是否将最高水位进行固化的频率 |
controlled.shutdown.enable =false | 是否允许控制器关闭broker ,若是设置为true,会关闭所有在这个broker上的leader,并转移到其他broker |
controlled.shutdown.max.retries =3 | 控制器关闭的尝试次数 |
controlled.shutdown.retry.backoff.ms =5000 | 每次关闭尝试的时间间隔 |
leader.imbalance.per.broker.percentage =10 | leader的不平衡比例,若是超过这个数值,会对分区进行重新的平衡 |
leader.imbalance.check.interval.seconds =300 | 检查leader是否不平衡的时间间隔 |
offset.metadata.max.bytes | 客户端保留offset信息的最大空间大小 |
kafka中zookeeper参数配置 | |
zookeeper.connect = localhost:2181 | zookeeper集群的地址,可以是多个,多个之间用逗号分割hostname1:port1,hostname2:port2,hostname3:port3 |
zookeeper.session.timeout.ms=6000 | ZooKeeper的最大超时时间,就是心跳的间隔,若是没有反映,那么认为已经死了,不易过大 |
zookeeper.connection.timeout.ms =6000 | ZooKeeper的连接超时时间 |
zookeeper.sync.time.ms =2000 | ZooKeeper集群中leader和follower之间的同步实际那 |
参数 |
默认值 |
说明(解释) |
broker.id =0 |
每一个broker在集群中的唯一表示,要求是正数。当该服务器的IP地址发生改变时,broker.id没有变化,则不会影响consumers的消息情况 |
|
log.dirs=/data/kafka-logs |
kafka数据的存放地址,多个地址的话用逗号分割/data/kafka-logs-1,/data/kafka-logs-2 |
|
port =9092 |
broker server服务端口 |
|
message.max.bytes =6525000 |
表示消息体的最大大小,单位是字节 |
|
num.network.threads =4 |
broker处理消息的最大线程数,一般情况下不需要去修改 |
|
num.io.threads =8 |
broker处理磁盘IO的线程数,数值应该大于你的硬盘数 |
|
background.threads =4 |
一些后台任务处理的线程数,例如过期消息文件的删除等,一般情况下不需要去做修改 |
|
queued.max.requests =500 |
等待IO线程处理的请求队列最大数,若是等待IO的请求超过这个数值,那么会停止接受外部消息,应该是一种自我保护机制。 |
|
host.name |
broker的主机地址,若是设置了,那么会绑定到这个地址上,若是没有,会绑定到所有的接口上,并将其中之一发送到ZK,一般不设置 |
|
socket.send.buffer.bytes=100*1024 |
socket的发送缓冲区,socket的调优参数SO_SNDBUFF |
|
socket.receive.buffer.bytes =100*1024 |
socket的接受缓冲区,socket的调优参数SO_RCVBUFF |
|
socket.request.max.bytes =100*1024*1024 |
socket请求的最大数值,防止serverOOM,message.max.bytes必然要小于socket.request.max.bytes,会被topic创建时的指定参数覆盖 |
|
log.segment.bytes =1024*1024*1024 |
topic的分区是以一堆segment文件存储的,这个控制每个segment的大小,会被topic创建时的指定参数覆盖 |
|
log.roll.hours =24*7 |
这个参数会在日志segment没有达到log.segment.bytes设置的大小,也会强制新建一个segment会被 topic创建时的指定参数覆盖 |
|
log.cleanup.policy = delete |
日志清理策略选择有:delete和compact主要针对过期数据的处理,或是日志文件达到限制的额度,会被 topic创建时的指定参数覆盖 |
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log.retention.minutes=3days |
数据存储的最大时间超过这个时间会根据log.cleanup.policy设置的策略处理数据,也就是消费端能够多久去消费数据 log.retention.bytes和log.retention.minutes任意一个达到要求,都会执行删除,会被topic创建时的指定参数覆盖 |
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log.retention.bytes=-1 |
topic每个分区的最大文件大小,一个topic的大小限制 =分区数*log.retention.bytes。-1没有大小限log.retention.bytes和log.retention.minutes任意一个达到要求,都会执行删除,会被topic创建时的指定参数覆盖 |
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log.retention.check.interval.ms=5minutes |
文件大小检查的周期时间,是否处罚 log.cleanup.policy中设置的策略 |
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log.cleaner.enable=false |
是否开启日志压缩 |
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log.cleaner.threads = 2 |
日志压缩运行的线程数 |
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log.cleaner.io.max.bytes.per.second=None |
日志压缩时候处理的最大大小 |
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log.cleaner.dedupe.buffer.size=500*1024*1024 |
日志压缩去重时候的缓存空间,在空间允许的情况下,越大越好 |
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log.cleaner.io.buffer.size=512*1024 |
日志清理时候用到的IO块大小一般不需要修改 |
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log.cleaner.io.buffer.load.factor =0.9 |
日志清理中hash表的扩大因子一般不需要修改 |
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log.cleaner.backoff.ms =15000 |
检查是否处罚日志清理的间隔 |
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log.cleaner.min.cleanable.ratio=0.5 |
日志清理的频率控制,越大意味着更高效的清理,同时会存在一些空间上的浪费,会被topic创建时的指定参数覆盖 |
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log.cleaner.delete.retention.ms =1day |
对于压缩的日志保留的最长时间,也是客户端消费消息的最长时间,同log.retention.minutes的区别在于一个控制未压缩数据,一个控制压缩后的数据。会被topic创建时的指定参数覆盖 |
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log.index.size.max.bytes =10*1024*1024 |
对于segment日志的索引文件大小限制,会被topic创建时的指定参数覆盖 |
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log.index.interval.bytes =4096 |
当执行一个fetch操作后,需要一定的空间来扫描最近的offset大小,设置越大,代表扫描速度越快,但是也更好内存,一般情况下不需要搭理这个参数 |
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log.flush.interval.messages=None |
log文件”sync”到磁盘之前累积的消息条数,因为磁盘IO操作是一个慢操作,但又是一个”数据可靠性"的必要手段,所以此参数的设置,需要在"数据可靠性"与"性能"之间做必要的权衡.如果此值过大,将会导致每次"fsync"的时间较长(IO阻塞),如果此值过小,将会导致"fsync"的次数较多,这也意味着整体的client请求有一定的延迟.物理server故障,将会导致没有fsync的消息丢失. |
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log.flush.scheduler.interval.ms =3000 |
检查是否需要固化到硬盘的时间间隔 |
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log.flush.interval.ms = None |
仅仅通过interval来控制消息的磁盘写入时机,是不足的.此参数用于控制"fsync"的时间间隔,如果消息量始终没有达到阀值,但是离上一次磁盘同步的时间间隔达到阀值,也将触发. |
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log.delete.delay.ms =60000 |
文件在索引中清除后保留的时间一般不需要去修改 |
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log.flush.offset.checkpoint.interval.ms =60000 |
控制上次固化硬盘的时间点,以便于数据恢复一般不需要去修改 |
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auto.create.topics.enable =true |
是否允许自动创建topic,若是false,就需要通过命令创建topic |
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default.replication.factor =1 |
是否允许自动创建topic,若是false,就需要通过命令创建topic |
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num.partitions =1 |
每个topic的分区个数,若是在topic创建时候没有指定的话会被topic创建时的指定参数覆盖 |
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以下是kafka中Leader,replicas配置参数 |
||
controller.socket.timeout.ms =30000 |
partition leader与replicas之间通讯时,socket的超时时间 |
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controller.message.queue.size=10 |
partition leader与replicas数据同步时,消息的队列尺寸 |
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replica.lag.time.max.ms =10000 |
replicas响应partition leader的最长等待时间,若是超过这个时间,就将replicas列入ISR(in-sync replicas),并认为它是死的,不会再加入管理中 |
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replica.lag.max.messages =4000 |
如果follower落后与leader太多,将会认为此follower[或者说partition relicas]已经失效 ##通常,在follower与leader通讯时,因为网络延迟或者链接断开,总会导致replicas中消息同步滞后 ##如果消息之后太多,leader将认为此follower网络延迟较大或者消息吞吐能力有限,将会把此replicas迁移 ##到其他follower中. ##在broker数量较少,或者网络不足的环境中,建议提高此值. |
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replica.socket.timeout.ms=30*1000 |
follower与leader之间的socket超时时间 |
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replica.socket.receive.buffer.bytes=64*1024 |
leader复制时候的socket缓存大小 |
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replica.fetch.max.bytes =1024*1024 |
replicas每次获取数据的最大大小 |
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replica.fetch.wait.max.ms =500 |
replicas同leader之间通信的最大等待时间,失败了会重试 |
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replica.fetch.min.bytes =1 |
fetch的最小数据尺寸,如果leader中尚未同步的数据不足此值,将会阻塞,直到满足条件 |
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num.replica.fetchers=1 |
leader进行复制的线程数,增大这个数值会增加follower的IO |
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replica.high.watermark.checkpoint.interval.ms =5000 |
每个replica检查是否将最高水位进行固化的频率 |
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controlled.shutdown.enable =false |
是否允许控制器关闭broker ,若是设置为true,会关闭所有在这个broker上的leader,并转移到其他broker |
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controlled.shutdown.max.retries =3 |
控制器关闭的尝试次数 |
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controlled.shutdown.retry.backoff.ms =5000 |
每次关闭尝试的时间间隔 |
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leader.imbalance.per.broker.percentage =10 |
leader的不平衡比例,若是超过这个数值,会对分区进行重新的平衡 |
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leader.imbalance.check.interval.seconds =300 |
检查leader是否不平衡的时间间隔 |
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offset.metadata.max.bytes |
客户端保留offset信息的最大空间大小 |
|
kafka中zookeeper参数配置 |
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zookeeper.connect = localhost:2181 |
zookeeper集群的地址,可以是多个,多个之间用逗号分割hostname1:port1,hostname2:port2,hostname3:port3 |
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zookeeper.session.timeout.ms=6000 |
ZooKeeper的最大超时时间,就是心跳的间隔,若是没有反映,那么认为已经死了,不易过大 |
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zookeeper.connection.timeout.ms =6000 |
ZooKeeper的连接超时时间 |
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zookeeper.sync.time.ms =2000 |
ZooKeeper集群中leader和follower之间的同步实际那 |
broker.id=0 #当前机器在集群中的唯一标识,和zookeeper的myid性质一样 port=19092 #当前kafka对外提供服务的端口默认是9092 host.name=192.168.7.100 #这个参数默认是关闭的,在0.8.1有个bug,DNS解析问题,失败率的问题。 num.network.threads=3 #这个是borker进行网络处理的线程数 num.io.threads=8 #这个是borker进行I/O处理的线程数 log.dirs=/opt/kafka/kafkalogs/ #消息存放的目录,这个目录可以配置为“,”逗号分割的表达式,上面的num.io.threads要大于这个目录的个数这个目录,如果配置多个目录,新创建的topic他把消息持久化的地方是,当前以逗号分割的目录中,那个分区数最少就放那一个 socket.send.buffer.bytes=102400 #发送缓冲区buffer大小,数据不是一下子就发送的,先回存储到缓冲区了到达一定的大小后在发送,能提高性能 socket.receive.buffer.bytes=102400 #kafka接收缓冲区大小,当数据到达一定大小后在序列化到磁盘 socket.request.max.bytes=104857600 #这个参数是向kafka请求消息或者向kafka发送消息的请请求的最大数,这个值不能超过java的堆栈大小 num.partitions=1 #默认的分区数,一个topic默认1个分区数 log.retention.hours=168 #默认消息的最大持久化时间,168小时,7天 message.max.byte=5242880 #消息保存的最大值5M default.replication.factor=2 #kafka保存消息的副本数,如果一个副本失效了,另一个还可以继续提供服务 replica.fetch.max.bytes=5242880 #取消息的最大直接数 log.segment.bytes=1073741824 #这个参数是:因为kafka的消息是以追加的形式落地到文件,当超过这个值的时候,kafka会新起一个文件 log.retention.check.interval.ms=300000 #每隔300000毫秒去检查上面配置的log失效时间(log.retention.hours=168 ),到目录查看是否有过期的消息如果有,删除 log.cleaner.enable=false #是否启用log压缩,一般不用启用,启用的话可以提高性能 zookeeper.connect=192.168.7.100:12181,192.168.7.101:12181,192.168.7.107:1218 #设置zookeeper的连接端口
=====================
==========================
zookeeper
#tickTime: 这个时间是作为 Zookeeper 服务器之间或客户端与服务器之间维持心跳的时间间隔,也就是每个 tickTime 时间就会发送一个心跳。 #initLimit: 这个配置项是用来配置 Zookeeper 接受客户端(这里所说的客户端不是用户连接 Zookeeper 服务器的客户端,而是 Zookeeper 服务器集群中连接到 Leader 的 Follower 服务器)初始化连接时最长能忍受多少个心跳时间间隔数。当已经超过 5个心跳的时间(也就是 tickTime)长度后 Zookeeper 服务器还没有收到客户端的返回信息,那么表明这个客户端连接失败。总的时间长度就是 5*2000=10 秒 #syncLimit: 这个配置项标识 Leader 与Follower 之间发送消息,请求和应答时间长度,最长不能超过多少个 tickTime 的时间长度,总的时间长度就是5*2000=10秒 #dataDir: 快照日志的存储路径 #dataLogDir: 事物日志的存储路径,如果不配置这个那么事物日志会默认存储到dataDir制定的目录,这样会严重影响zk的性能,当zk吞吐量较大的时候,产生的事物日志、快照日志太多 #clientPort: 这个端口就是客户端连接 Zookeeper 服务器的端口,Zookeeper 会监听这个端口,接受客户端的访问请求。修改他的端口改大点
==============一个人的集群配置==========
master
# Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to You under the Apache License, Version 2.0 # (the "License"); you may not use this file except in compliance with # the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # see kafka.server.KafkaConfig for additional details and defaults ############################# Server Basics ############################# # The id of the broker. This must be set to a unique integer for each broker. broker.id=0 #每个broker id ############################# Socket Server Settings ############################# listeners=PLAINTEXT://:9092 # The port the socket server listens on port=9092 # Hostname the broker will bind to. If not set, the server will bind to all interfaces host.name=master # Hostname the broker will advertise to producers and consumers. If not set, it uses the # value for "host.name" if configured. Otherwise, it will use the value returned from # java.net.InetAddress.getCanonicalHostName(). advertised.host.name=master # The port to publish to ZooKeeper for clients to use. If this is not set, # it will publish the same port that the broker binds to. #advertised.port=<port accessible by clients> # The number of threads handling network requests num.network.threads=3 # The number of threads doing disk I/O num.io.threads=8 # The send buffer (SO_SNDBUF) used by the socket server socket.send.buffer.bytes=102400#cache的大小,存储這么多就开始发送 # The receive buffer (SO_RCVBUF) used by the socket server socket.receive.buffer.bytes=102400#1m # The maximum size of a request that the socket server will accept (protection against OOM) socket.request.max.bytes=104857600#请求信息的最大数,不能超过java堆栈的大小 ############################# Log Basics ############################# # A comma seperated list of directories under which to store log files log.dirs=/usr/local/kafka/logs#可<span style="font-family: Arial, Helvetica, sans-serif;">多个,中间</span><span style="font-family: Arial, Helvetica, sans-serif;">用逗号分开,新建的topic存储的时候是看那个更少就存那个</span> # The default number of log partitions per topic. More partitions allow greater # parallelism for consumption, but this will also result in more files across # the brokers. num.partitions=2 # The number of threads per data directory to be used for log recovery at startup and flushing at shutdown. # This value is recommended to be increased for installations with data dirs located in RAID array. num.recovery.threads.per.data.dir=1 ############################# Log Flush Policy ############################# # Messages are immediately written to the filesystem but by default we only fsync() to sync # the OS cache lazily. The following configurations control the flush of data to disk. # There are a few important trade-offs here: # 1. Durability: Unflushed data may be lost if you are not using replication. # 2. Latency: Very large flush intervals may lead to latency spikes when the flush does occur as there will be a lot of data to flush. # 3. Throughput: The flush is generally the most expensive operation, and a small flush interval may lead to exceessive seeks. # The settings below allow one to configure the flush policy to flush data after a period of time or # every N messages (or both). This can be done globally and overridden on a per-topic basis. # The number of messages to accept before forcing a flush of data to disk #log.flush.interval.messages=10000 # The maximum amount of time a message can sit in a log before we force a flush #log.flush.interval.ms=1000 ############################# Log Retention Policy ############################# # The following configurations control the disposal of log segments. The policy can # be set to delete segments after a period of time, or after a given size has accumulated. # A segment will be deleted whenever *either* of these criteria are met. Deletion always happens # from the end of the log. # The minimum age of a log file to be eligible for deletion log.retention.hours=168#保存7天 # A size-based retention policy for logs. Segments are pruned from the log as long as the remaining # segments don't drop below log.retention.bytes. #log.retention.bytes=1073741824#默认消息不可以超出的大小 # The maximum size of a log segment file. When this size is reached a new log segment will be created. log.segment.bytes=1073741824#消息持久化文件的最大化大小。超过会新起一个 # The interval at which log segments are checked to see if they can be deleted according # to the retention policies log.retention.check.interval.ms=300000#多长时间检查一次连接情况 ############################# Zookeeper ############################# # Zookeeper connection string (see zookeeper docs for details). # This is a comma separated host:port pairs, each corresponding to a zk # server. e.g. "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002". # You can also append an optional chroot string to the urls to specify the # root directory for all kafka znodes. zookeeper.connect=master:2181,worker1:2181,worker2:2181#zookeeper的接口 # Timeout in ms for connecting to zookeeper zookeeper.connection.timeout.ms=6000
work1
# Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to You under the Apache License, Version 2.0 # (the "License"); you may not use this file except in compliance with # the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # see kafka.server.KafkaConfig for additional details and defaults ############################# Server Basics ############################# # The id of the broker. This must be set to a unique integer for each broker. broker.id=1 ############################# Socket Server Settings ############################# listeners=PLAINTEXT://:9092 # The port the socket server listens on port=9092 # Hostname the broker will bind to. If not set, the server will bind to all interfaces host.name=worker1 # Hostname the broker will advertise to producers and consumers. If not set, it uses the # value for "host.name" if configured. Otherwise, it will use the value returned from # java.net.InetAddress.getCanonicalHostName(). advertised.host.name=worker1 # The port to publish to ZooKeeper for clients to use. If this is not set, # it will publish the same port that the broker binds to. #advertised.port=<port accessible by clients> # The number of threads handling network requests num.network.threads=3 # The number of threads doing disk I/O num.io.threads=8 # The send buffer (SO_SNDBUF) used by the socket server socket.send.buffer.bytes=102400 # The receive buffer (SO_RCVBUF) used by the socket server socket.receive.buffer.bytes=102400 # The maximum size of a request that the socket server will accept (protection against OOM) socket.request.max.bytes=104857600 ############################# Log Basics ############################# # A comma seperated list of directories under which to store log files log.dirs=/usr/local/kafka/logs # The default number of log partitions per topic. More partitions allow greater # parallelism for consumption, but this will also result in more files across # the brokers. num.partitions=2 # The number of threads per data directory to be used for log recovery at startup and flushing at shutdown. # This value is recommended to be increased for installations with data dirs located in RAID array. num.recovery.threads.per.data.dir=1 ############################# Log Flush Policy ############################# # Messages are immediately written to the filesystem but by default we only fsync() to sync # the OS cache lazily. The following configurations control the flush of data to disk. # There are a few important trade-offs here: # 1. Durability: Unflushed data may be lost if you are not using replication. # 2. Latency: Very large flush intervals may lead to latency spikes when the flush does occur as there will be a lot of data to flush. # 3. Throughput: The flush is generally the most expensive operation, and a small flush interval may lead to exceessive seeks. # The settings below allow one to configure the flush policy to flush data after a period of time or # every N messages (or both). This can be done globally and overridden on a per-topic basis. # The number of messages to accept before forcing a flush of data to disk #log.flush.interval.messages=10000 # The maximum amount of time a message can sit in a log before we force a flush #log.flush.interval.ms=1000 ############################# Log Retention Policy ############################# # The following configurations control the disposal of log segments. The policy can # be set to delete segments after a period of time, or after a given size has accumulated. # A segment will be deleted whenever *either* of these criteria are met. Deletion always happens # from the end of the log. # The minimum age of a log file to be eligible for deletion log.retention.hours=168 # A size-based retention policy for logs. Segments are pruned from the log as long as the remaining # segments don't drop below log.retention.bytes. #log.retention.bytes=1073741824 # The maximum size of a log segment file. When this size is reached a new log segment will be created. log.segment.bytes=1073741824 # The interval at which log segments are checked to see if they can be deleted according # to the retention policies log.retention.check.interval.ms=300000 ############################# Zookeeper ############################# # Zookeeper connection string (see zookeeper docs for details). # This is a comma separated host:port pairs, each corresponding to a zk # server. e.g. "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002". # You can also append an optional chroot string to the urls to specify the # root directory for all kafka znodes. zookeeper.connect=master:2181,worker1:2181,worker2:2181 # Timeout in ms for connecting to zookeeper zookeeper.connection.timeout.ms=6000
work2
# Licensed to the Apache Software Foundation (ASF) under one or more # contributor license agreements. See the NOTICE file distributed with # this work for additional information regarding copyright ownership. # The ASF licenses this file to You under the Apache License, Version 2.0 # (the "License"); you may not use this file except in compliance with # the License. You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # see kafka.server.KafkaConfig for additional details and defaults ############################# Server Basics ############################# # The id of the broker. This must be set to a unique integer for each broker. broker.id=2 ############################# Socket Server Settings ############################# listeners=PLAINTEXT://:9092 # The port the socket server listens on port=9092 # Hostname the broker will bind to. If not set, the server will bind to all interfaces host.name=worker2 # Hostname the broker will advertise to producers and consumers. If not set, it uses the # value for "host.name" if configured. Otherwise, it will use the value returned from # java.net.InetAddress.getCanonicalHostName(). advertised.host.name=worker2 # The port to publish to ZooKeeper for clients to use. If this is not set, # it will publish the same port that the broker binds to. #advertised.port=<port accessible by clients> # The number of threads handling network requests num.network.threads=3 # The number of threads doing disk I/O num.io.threads=8 # The send buffer (SO_SNDBUF) used by the socket server socket.send.buffer.bytes=102400 # The receive buffer (SO_RCVBUF) used by the socket server socket.receive.buffer.bytes=102400 # The maximum size of a request that the socket server will accept (protection against OOM) socket.request.max.bytes=104857600 ############################# Log Basics ############################# # A comma seperated list of directories under which to store log files log.dirs=/usr/local/kafka/logs # The default number of log partitions per topic. More partitions allow greater # parallelism for consumption, but this will also result in more files across # the brokers. num.partitions=2 # The number of threads per data directory to be used for log recovery at startup and flushing at shutdown. # This value is recommended to be increased for installations with data dirs located in RAID array. num.recovery.threads.per.data.dir=1 ############################# Log Flush Policy ############################# # Messages are immediately written to the filesystem but by default we only fsync() to sync # the OS cache lazily. The following configurations control the flush of data to disk. # There are a few important trade-offs here: # 1. Durability: Unflushed data may be lost if you are not using replication. # 2. Latency: Very large flush intervals may lead to latency spikes when the flush does occur as there will be a lot of data to flush. # 3. Throughput: The flush is generally the most expensive operation, and a small flush interval may lead to exceessive seeks. # The settings below allow one to configure the flush policy to flush data after a period of time or # every N messages (or both). This can be done globally and overridden on a per-topic basis. # The number of messages to accept before forcing a flush of data to disk #log.flush.interval.messages=10000 # The maximum amount of time a message can sit in a log before we force a flush #log.flush.interval.ms=1000 ############################# Log Retention Policy ############################# # The following configurations control the disposal of log segments. The policy can # be set to delete segments after a period of time, or after a given size has accumulated. # A segment will be deleted whenever *either* of these criteria are met. Deletion always happens # from the end of the log. # The minimum age of a log file to be eligible for deletion log.retention.hours=168 # A size-based retention policy for logs. Segments are pruned from the log as long as the remaining # segments don't drop below log.retention.bytes. #log.retention.bytes=1073741824 # The maximum size of a log segment file. When this size is reached a new log segment will be created. log.segment.bytes=1073741824 # The interval at which log segments are checked to see if they can be deleted according # to the retention policies log.retention.check.interval.ms=300000 ############################# Zookeeper ############################# # Zookeeper connection string (see zookeeper docs for details). # This is a comma separated host:port pairs, each corresponding to a zk # server. e.g. "127.0.0.1:3000,127.0.0.1:3001,127.0.0.1:3002". # You can also append an optional chroot string to the urls to specify the # root directory for all kafka znodes. zookeeper.connect=master:2181,worker1:2181,worker2:2181 # Timeout in ms for connecting to zookeeper zookeeper.connection.timeout.ms=6000
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