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ELK集群搭建大型日志系统:3.Kafka集群搭建

ELK集群搭建大型日志系统:3.Kafka集群搭建

作者: 小六的昵称已被使用 | 来源:发表于2019-08-13 10:13 被阅读0次

    环境

    [14:23:11 root@elk-01 ~ $]cat /etc/centos-release
    CentOS Linux release 7.6.1810 (Core)
    
    apache-zookeeper-3.5.5-bin.tar.gz
    kafka_2.12-2.2.1.tgz
    

    第一步:配置 zookeeper

    官网:https://zookeeper.apache.org/

    下载地址:https://www.apache.org/dyn/closer.cgi/zookeeper/

    安装教程:https://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_systemReq

    3台服务器为集群的最小建议大小,服务器数量最好为奇数,并且建议在不同的机器上运行

    1.安装 JDK(by all)

    对于4GB内存的服务器,最大堆内存设置为3GB
    

    2.下载并安装 ZooKeeper(by all)

    ## 下载并解压
    wget http://mirror.bit.edu.cn/apache/zookeeper/zookeeper-3.5.5/apache-zookeeper-3.5.5-bin.tar.gz
    tar vxzf apache-zookeeper-3.5.5-bin.tar.gz
    

    3.编辑配置文件(3个节点保持一致即可)(by all)

    cat <<\EOF > apache-zookeeper-3.5.5-bin/conf/zoo.cfg
    ## 心跳包间隔时间
    tickTime=2000
    
    ## 此配置表示允许 follower 连接并同步到 leader 的初始化连接时间,以 tickTime 的倍数表示
    ## 当超过此时间则连接失败
    ## 如果在设定的时间段内,半数以上的跟随者未能完成同步,领导者会放弃领导地位,进行新一次的领导选举
    ## 默认为 10
    initLimit=10
    
    ## 集群中的 follower 与 leader 服务器之间请求和应答之间能容忍的最多心跳数,以 tickTime 的倍数表示
    ## 此配置表示,如果 follower 在设置的时间内不能与 leader 进行通信,娜美此 follower 将被丢弃。所有关联到这个 follower 的客户端将重新连接到其他 follower 
    ## 默认为 5
    syncLimit=5
    
    ## 存储快照文件snapshot的目录
    ## 默认在 /tmp 目录,但是请不要使用 /tmp 路径,这只是一个示例
    dataDir=/home/zookeeperData
    
    ## 监听端口
    clientPort=2181
    
    ## 最大连接数
    #maxClientCnxns=60
    
    ## 这个参数指定了需要保留的文件数目。默认是保留3个。
    #autopurge.snapRetainCount=3
    ## 设置为0 禁用自动清除功能,跟上一个参数配合使用
    #autopurge.purgeInterval=1
    
    ## 集群节点
    server.1=192.168.50.14:2888:3888
    server.2=192.168.50.15:2888:3888
    server.3=192.168.50.16:2888:3888
    EOF
    

    4.创建 Data 目录并写入myid文件

    myid文件由一行组成,是一个只包含本服务器 ID 的文本,此 ID 必须唯一,并且介于 1-254 之间

    ## 节点1:
    mkdir /home/zookeeperData
    echo 1 > /home/zookeeperData/myid
    cat /home/zookeeperData/myid
    
    ## 节点2:
    mkdir /home/zookeeperData
    echo 2 > /home/zookeeperData/myid
    cat /home/zookeeperData/myid
    
    ## 节点3:
    mkdir /home/zookeeperData
    echo 3 > /home/zookeeperData/myid
    cat /home/zookeeperData/myid
    

    5.启动服务(by all)

    ## 启动
    /home/apache-zookeeper-3.5.5-bin/bin/zkServer.sh start
    
    ## 查看服务状态
    /home/apache-zookeeper-3.5.5-bin/bin/zkServer.sh status
    
    ## 查看端口监听状态
    netstat -antp | grep -E '2181|2888|3888'
    
    ## 查看进程状态
    ps -ef | grep zookeeper | grep -v grep
    
    ## 使用客户端连接到集群
    /home/apache-zookeeper-3.5.5-bin/bin/zkCli.sh -server 127.0.0.1:2181
    

    第二步:部署 kafka

    下载地址:http://kafka.apache.org/downloads

    1.下载并安装

    wget http://mirror.bit.edu.cn/apache/kafka/2.2.1/kafka_2.12-2.2.1.tgz
    tar vxzf kafka_2.12-2.2.1.tgz
    

    2.编辑配置文件

    以下配置文件有5处做了修改

    需要根据节点修改broker.idlisteners

    cp kafka_2.12-2.2.1/config/server.properties kafka_2.12-2.2.1/config/server.properties.bak
    cat <<\EOF > kafka_2.12-2.2.1/config/server.properties
    ############################# Server Basics #############################
    ## broker ID,必须为每个服务器设置一个唯一的整数
    broker.id=0
    
    ############################# Socket Server Settings #############################
    ## 修改
    ## 配置监听
    listeners=PLAINTEXT://192.168.50.14.:9092
    
    ## 用于从网络接收请求并向网络发送响应的线程数
    num.network.threads=3
    
    ## 用于处理请求的线程数,其中可能包括磁盘 I/O
    num.io.threads=8
    
    ## 发送缓冲区
    socket.send.buffer.bytes=102400
    
    ## 接收缓冲区
    socket.receive.buffer.bytes=102400
    
    # The maximum size of a request that the socket server will accept (protection against OOM)
    ## 服务器接收的请求的最大值(防止 OOM)
    socket.request.max.bytes=104857600
    
    
    ############################# Log Basics #############################
    ## 日志目录
    log.dirs=/tmp/kafka-logs
    
    ## 每个 broker 的默认日志分区
    num.partitions=1
    
    ## 修改
    ## 在启动时用于日志恢复和关闭时刷新日志的线程数
    ## 如果数据目录位于 RAID 阵列中,建议增加此值
    ## 默认值为1
    num.recovery.threads.per.data.dir=5
    
    
    ############################# Internal Topic Settings  #############################
    ## 修改
    ## 组元数据 "__consumer_offsets" and "__transaction_state" 的复制因子
    ## 出开外测试外,建议使用大于1的值以确保高可用性,例如3
    ## offsets.topic 的副本数量
    ## 默认为1
    offsets.topic.replication.factor=3
    ## transaction.state.log 副本数量
    ## 默认为1
    transaction.state.log.replication.factor=3
    ## 覆盖事务主题的min.insync.replicas配置
    ## 默认为1
    transaction.state.log.min.isr=3
    
    
    ############################# 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 excessive 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 due to age
    log.retention.hours=168
    
    # A size-based retention policy for logs. Segments are pruned from the log unless the remaining
    # segments drop below log.retention.bytes. Functions independently of log.retention.hours.
    #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 #############################
    ## 修改
    ## Zookeeper 连接字符串
    zookeeper.connect=192.168.50.14:2181,192.168.50.15:2181,192.168.50.16:2181
    
    ## Zookeeper 连接超时时间(毫秒)
    zookeeper.connection.timeout.ms=6000
    
    
    ############################# Group Coordinator Settings #############################
    ## 修改
    ## 空消费组延时时间,设为0是为了方便开发
    ## 官方建议实际发布生成线中配置为3秒更好
    ## 单位为毫秒 
    group.initial.rebalance.delay.ms=3000
    EOF
    
    vim kafka_2.12-2.2.1/config/server.properties
    

    3.创建启动脚本

    ## 创建启动脚本
    echo '/home/kafka_2.12-2.2.1/bin/kafka-server-start.sh /home/kafka_2.12-2.2.1/config/server.properties &' > /home/kafka_start.sh
    
    ## 启动 kafka
    bash /home/kafka_start.sh
    
    ## 查看监听状态
    netstat -antp | grep 9092
    

    第三步:安装 Kafka 管理工具 Kafka Manager

    GitHub主页:https://github.com/yahoo/kafka-manager

    下载地址:https://github.com/yahoo/kafka-manager/releases

    1.安装依赖

    cat <<\EOF >/etc/yum.repos.d/bintray-sbt-rpm.repo
    #bintray--sbt-rpm - packages by  from Bintray
    [bintray--sbt-rpm]
    name=bintray--sbt-rpm
    baseurl=https://sbt.bintray.com/rpm
    gpgcheck=0
    repo_gpgcheck=0
    enabled=1
    EOF
    
    yum install -y sbt
    

    2.下载安装

    ## 下载并解压
    wget https://github.com/yahoo/kafka-manager/archive/2.0.0.2.zip
    unzip kafka-manager2.0.0.2.zip
    cd kafka-manager-2.0.0.2
    
    ## 编译
    ./sbt clean dist
    
    ## 查看编译后的文件
    cd target/universal/
    ll
    
    ## 重新解压编译好的
    unzip kafka-manager-2.0.0.2.zip
    
    ## 进入到新解压的目录内修改配置文件
    cd kafka-manager-2.0.0.2
    vim conf/application.conf
    
    ## 将本行注销
    ## kafka-manager.zkhosts="kafka-manager-zookeeper:2181"
    ## 增加本行
    kafka-manager.zkhosts="192.168.50.14:2181,192.168.50.15:2181,192.168.50.16:2181"
    
    ## 启动
    bin/kafka-manager -Dconfig.file=conf/application.conf -Dhttp.port=8080
    
    ## 查看进程
    jps
    
        [16:51:50 root@kibana ~ $]jps
        56136 Jps
        54795 ProdServerStart
    

    3.登录管理页面,添加集群并管理

    ## 1.登录管理页面
    http://192.168.50.17:8080
    
    ## 点击 Add Cluster
        Cluster Name:任意
        Cluster Zookeeper Hosts:192.168.50.14:2181,192.168.50.15:2181,192.168.50.16:2181
        Kafka Version:选择跟自己版本最接近的
    
    ## 点击 Save 保存即可
    

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