读取Kafka集群的消息

Table of Contents

• 1. 先启动zookeeper
• 2. 本地启动多个brokers
• 3. producer产生多个消息，分布在一个topic的2个partition中
  • 3.1. 创建一个test2 topic
  • 3.2. 查看下topic信息
  • 3.3. 写入消息
• 4. consumer读取所有brokers的指定topic的所有消息

1 先启动zookeeper

kafka安装包自带了zookeeper程序，很方便。 进入bin目录，运行下面的脚本

[dean@dell_xps_13 bin]$ ./zookeeper-server-start.sh ../config/zookeeper.properties [2016-04-29 16:03:41,484] INFO Reading configuration from: ../config/zookeeper.properties (org.apache.zookeeper.server.quorum.QuorumPeerConfig)[2016-04-29 16:03:41,484] WARN Either no config or no quorum defined in config, running  in standalone mode (org.apache.zookeeper.server.quorum.QuorumPeerMain)[2016-04-29 16:03:41,498] INFO Reading configuration from: ../config/zookeeper.properties (org.apache.zookeeper.server.quorum.QuorumPeerConfig)[2016-04-29 16:03:41,499] INFO Starting server (org.apache.zookeeper.server.ZooKeeperServerMain)[2016-04-29 16:03:41,503] INFO Server environment:zookeeper.version=3.3.3-1203054, built on 11/17/2011 05:47 GMT (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:host.name=localhost.localdomain (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:java.version=1.8.0_77 (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:java.vendor=Oracle Corporation (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:java.home=/usr/lib/jvm/java-8-openjdk/jre (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:java.class.path=:/home/dean/work/software/kafka_2.10-0.8.1/bin/../core/build/dependant-libs-2.8.0/*.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../perf/build/libs//kafka-perf_2.8.0*.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../clients/build/libs//kafka-clients*.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../examples/build/libs//kafka-examples*.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../contrib/hadoop-consumer/build/libs//kafka-hadoop-consumer*.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../contrib/hadoop-producer/build/libs//kafka-hadoop-producer*.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../libs/jopt-simple-3.2.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../libs/kafka_2.10-0.8.1.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../libs/log4j-1.2.15.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../libs/metrics-annotation-2.2.0.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../libs/metrics-core-2.2.0.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../libs/scala-library-2.10.1.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../libs/slf4j-api-1.7.2.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../libs/snappy-java-1.0.5.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../libs/zkclient-0.3.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../libs/zookeeper-3.3.4.jar:/home/dean/work/software/kafka_2.10-0.8.1/bin/../core/build/libs/kafka_2.8.0*.jar (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:java.library.path=/usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:java.io.tmpdir=/tmp (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:java.compiler=<NA> (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:os.name=Linux (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:os.arch=amd64 (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:os.version=4.5.1-1-ARCH (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:user.name=dean (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:user.home=/home/dean (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,503] INFO Server environment:user.dir=/home/dean/work/software/kafka_2.10-0.8.1/bin (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,507] INFO tickTime set to 3000 (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,507] INFO minSessionTimeout set to -1 (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,507] INFO maxSessionTimeout set to -1 (org.apache.zookeeper.server.ZooKeeperServer)[2016-04-29 16:03:41,520] INFO binding to port 0.0.0.0/0.0.0.0:2181 (org.apache.zookeeper.server.NIOServerCnxn)[2016-04-29 16:03:41,535] INFO Snapshotting: 0 (org.apache.zookeeper.server.persistence.FileTxnSnapLog)[2016-04-29 16:10:44,072] INFO Accepted socket connection from /0:0:0:0:0:0:0:1:34216 (org.apache.zookeeper.server.NIOServerCnxn)[2016-04-29 16:10:44,111] INFO Client attempting to establish new session at /0:0:0:0:0:0:0:1:34216 (org.apache.zookeeper.server.NIOServerCnxn)[2016-04-29 16:10:44,113] INFO Creating new log file: log.1 (org.apache.zookeeper.server.persistence.FileTxnLog)[2016-04-29 16:10:44,118] INFO Established session 0x154610b75630000 with negotiated timeout 30000 for client /0:0:0:0:0:0:0:1:34216 (org.apache.zookeeper.server.NIOServerCnxn)[2016-04-29 16:24:37,145] INFO Processed session termination for sessionid: 0x154610b75630000 (org.apache.zookeeper.server.PrepRequestProcessor)[2016-04-29 16:24:37,151] INFO Closed socket connection for client /0:0:0:0:0:0:0:1:34216 which had sessionid 0x154610b75630000 (org.apache.zookeeper.server.NIOServerCnxn)

2 本地启动多个brokers

这里打算启动两个broker, 需要两个配置文件，进入config目录后复制出两个文件

cp server.properties server1.propertiescp server.properties server2.properties

两个配置文件里面分别修改3处： server1.properties

############################# Server Basics ############################## The id of the broker. This must be set to a unique integer for each broker.broker.id=1############################# Socket Server Settings ############################## The port the socket server listens onport=9093############################# Log Basics ############################## A comma seperated list of directories under which to store log fileslog.dirs=/tmp/kafka-logs-1

server2.properties

############################# Server Basics ############################## The id of the broker. This must be set to a unique integer for each broker.broker.id=2############################# Socket Server Settings ############################## The port the socket server listens onport=9094############################# Log Basics ############################## A comma seperated list of directories under which to store log fileslog.dirs=/tmp/kafka-logs-2

运行命令分别启动两个brokers

./kafka-server-start.sh ../config/server1.properties ./kafka-server-start.sh ../config/server2.properties

3 producer产生多个消息，分布在一个topic的2个partition中

3.1 创建一个test2 topic

./kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 2 --partitions 2 --topic test2Created topic "test2".

3.2 查看下topic信息

./kafka-topics.sh --describe --zookeeper localhost:2181 --topic test2Topic:test2     PartitionCount:2        ReplicationFactor:2     Configs:        Topic: test2    Partition: 0    Leader: 1       Replicas: 1,2   Isr: 1,2        Topic: test2    Partition: 1    Leader: 2       Replicas: 2,1   Isr: 2,1

3.3 写入消息

用producer脚本写入多个消息

./kafka-console-producer.sh --broker-list localhost:9093,localhost:9094 --topic test2SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.shanghaibeijinghangzhoujinanyangzhoushenzhenghongkongnanjing

4 consumer读取所有brokers的指定topic的所有消息

用consumer脚本读取

./kafka-console-consumer.sh --zookeeper localhost:2181 --topic test2 --from-beginningSLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".SLF4J: Defaulting to no-operation (NOP) logger implementationSLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.shanghaibeijinghangzhoujinanyangzhoushenzhenghongkongnanjing

读取成功。

Created: 2016-05-01 Sun 21:40

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