kafka安裝及基本操作

1.jdk安裝

yum install java-1.8.0-openjdk* -y

這種安裝一個好處,不用定義環境變量,另外這種安裝默認路徑是:java linux 默認安裝路徑/usr/lib/jvm

2.zookeeper 安裝

文件地址:http://www.apache.org/dist/zookeeper/stable/zookeeper-3.4.14.tar.gz

解壓到制定目錄:tar -zxvf zookeeper-3.4.14.tar.gz

環境變量設置:

export ZOOKEEPER_INSTALL=/opt/zookeeper

export PATH=$ZOOKEEPER_INSTALL/bin

3.kafka安裝

安裝文件:wget http://apache.01link.hk/kafka/2.1.1/kafka_2.11-2.1.1.tgz

解壓到制定目錄:tar -zxvf  kafka_2.11-2.1.1.tgz

server.properies文件設置:

# 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.
# 節點的ID,必須與其它節點不同
broker.id=0

# Switch to enable topic deletion or not, default value is false
# 選擇啓用刪除主題功能,默認false
#delete.topic.enable=true

############################# Socket Server Settings #############################

# The address the socket server listens on. It will get the value returned from 
# java.net.InetAddress.getCanonicalHostName() if not configured.
# 套接字服務器堅挺的地址。如果沒有配置,就使用java.net.InetAddress.getCanonicalHostName()的返回值
#   FORMAT:
#     listeners = listener_name://host_name:port
#   EXAMPLE:
#     listeners = PLAINTEXT://your.host.name:9092
#listeners=PLAINTEXT://:9092

# Hostname and port the broker will advertise to producers and consumers. If not set, 
# it uses the value for "listeners" if configured.  Otherwise, it will use the value
# returned from java.net.InetAddress.getCanonicalHostName().
# 節點的主機名會通知給生產者和消費者。如果沒有設置,如果配置了"listeners"就使用"listeners"的值。
# 否則就使用java.net.InetAddress.getCanonicalHostName()的返回值
#advertised.listeners=PLAINTEXT://your.host.name:9092

# Maps listener names to security protocols, the default is for them to be the same. See the config documentation for more details
# 將偵聽器的名稱映射到安全協議,默認情況下它們是相同的。有關詳細信息,請參閱配置文檔
#listener.security.protocol.map=PLAINTEXT:PLAINTEXT,SSL:SSL,SASL_PLAINTEXT:SASL_PLAINTEXT,SASL_SSL:SASL_SSL

# The number of threads that the server uses for receiving requests from the network and sending responses to the network
# 服務器用來接受請求或者發送響應的線程數
num.network.threads=3

# The number of threads that the server uses for processing requests, which may include disk I/O
# 服務器用來處理請求的線程數,可能包括磁盤IO
num.io.threads=8

# The send buffer (SO_SNDBUF) used by the socket server
# 套接字服務器使用的發送緩衝區大小
socket.send.buffer.bytes=102400

# The receive buffer (SO_RCVBUF) used by the socket server
# 套接字服務器使用的接收緩衝區大小
socket.receive.buffer.bytes=102400

# The maximum size of a request that the socket server will accept (protection against OOM)
# 單個請求最大能接收的數據量
socket.request.max.bytes=104857600


############################# Log Basics #############################

# A comma seperated list of directories under which to store log files
# 一個逗號分隔的目錄列表,用來存儲日誌文件
log.dirs=/tmp/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.
# 每個主題的日誌分區的默認數量。更多的分區允許更大的並行操作,但是它會導致節點產生更多的文件
num.partitions=1

# 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.
# 每個數據目錄中的線程數,用於在啓動時日誌恢復,並在關閉時刷新。
num.recovery.threads.per.data.dir=1

############################# Internal Topic Settings  #############################
# 內部主題設置
# The replication factor for the group metadata internal topics "__consumer_offsets" and "__transaction_state"
# For anything other than development testing, a value greater than 1 is recommended for to ensure availability such as 3.
# 對於除了開發測試之外的其他任何東西,group元數據內部主題的複製因子“__consumer_offsets”和“__transaction_state”,建議值大於1,以確保可用性(如3)。
offsets.topic.replication.factor=1
transaction.state.log.replication.factor=1
transaction.state.log.min.isr=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.
# 消息直接被寫入文件系統,但是默認情況下我們僅僅調用fsync()以延遲的同步系統緩存
# There are a few important trade-offs here:
# 這些有一些重要的權衡
#    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.
#    1. 持久性:如果不使用複製,未刷新的數據可能會丟失。
#    2. 延遲:非常大的刷新間隔可能會在刷新時導致延遲,因爲將會有大量數據刷新。
#    3. 吞吐量:刷新通常是最昂貴的操作,而一個小的刷新間隔可能會導致過多的搜索。
# 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.
# 下面的設置允許你去配置刷新策略,每隔一段時間刷新或者一次N個消息(或者兩個都配置)。這可以在全局範圍內完成,並在每個主題的基礎上重寫。

# The number of messages to accept before forcing a flush of data to disk
# 在強制刷新數據到磁盤之前允許接收消息的數量
#log.flush.interval.messages=10000

# The maximum amount of time a message can sit in a log before we force a flush
# 在強制刷新之前,消息可以在日誌中停留的最長時間
#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.
# 以下的配置控制了日誌段的處理。策略可以配置爲每隔一段時間刪除片段或者到達一定大小之後。
# A segment will be deleted whenever *either* of these criteria are met. Deletion always happens
# from the end of the log.
# 當滿足這些條件時,將會刪除一個片段。刪除總是發生在日誌的末尾。

# The minimum age of a log file to be eligible for deletion
# 一個日誌的最小存活時間,可以被刪除
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.
# 一個基於大小的日誌保留策略。段將被從日誌中刪除只要剩下的部分段不低於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.
# 每一個日誌段大小的最大值。當到達這個大小時,會生成一個新的片段。
log.segment.bytes=1073741824

# The interval at which log segments are checked to see if they can be deleted according
# to the retention policies
# 檢查日誌段的時間間隔,看是否可以根據保留策略刪除它們
log.retention.check.interval.ms=300000

############################# Zookeeper #############################

# Zookeeper connection string (see zookeeper docs for details).
# Zookeeper連接字符串(具體見Zookeeper文檔)
# This is a comma separated host:port pairs, each corresponding to a zk
# 這是一個以逗號爲分割的部分,每一個都匹配一個Zookeeper
# 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.
# 您還可以將一個可選的chroot字符串附加到url,以指定所有kafka znode的根目錄。
zookeeper.connect=localhost:2181

# Timeout in ms for connecting to zookeeper
# 連接到Zookeeper的超時時間
zookeeper.connection.timeout.ms=6000


############################# Group Coordinator Settings #############################

# The following configuration specifies the time, in milliseconds, that the GroupCoordinator will delay the initial consumer rebalance.
# The rebalance will be further delayed by the value of group.initial.rebalance.delay.ms as new members join the group, up to a maximum of max.poll.interval.ms.
# The default value for this is 3 seconds.
# We override this to 0 here as it makes for a better out-of-the-box experience for development and testing.
# However, in production environments the default value of 3 seconds is more suitable as this will help to avoid unnecessary, and potentially expensive, rebalances during application startup.
group.initial.rebalance.delay.ms=0

4. 啓動服務

啓動zk: bin/zookeeper-server-start.sh  config/zookeeper.properties 

啓動kafka: bin/kafka-server-start.sh config/server.properties

5.kafka操作

創建topic:bin/kafka-topics.sh --create --zookeeper localhost:2181 --replication-factor 1 --partitions 1 --topic test

查看topic:bin/kafka-topics.sh -list -zookeeper localhost:2181

通過produce發送消息: bin/kafka-console-producer.sh --broker-list localhost:9092 --topic test

通過consume接收消息:bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic test --from-beginning

可以開啓兩個終端,一個發送消息,一個接受消息。
 

 

 

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