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  • Flume

    1、Flume

    概述:Flume是一种分布式,可靠且可用的服务,用于有效地收集,聚合和移动大量日
    志数据。它具有基于流数据流的简单灵活的架构。它具有可靠的可靠性机制和许多故障
    转移和恢复机制,具有强大的容错性。它使用简单的可扩展数据模型,允许在线分析应
    用程序。
    1)数据采集(爬虫日志数据flume)
    2)数据存储(hdfs/hive/hbase(nosql))
    3)数据计算(mapreduce/hive/sparkSQL/sparkStreaming/flink)
    4)数据可视化

    2、Flume角色

    1)source
    数据源,用户采集数据,source产生数据流,同时会把产生的数据流传输到channel

    2)channel
    传输通道,用于桥接source和sink

    3)sink
    下沉,用于收集channel传输的数据,将数据源传递到目标源

    4)agent
    在flume中使用事件作为传输的基本单元

    3、flume使用

    简单易用,只需要写配置文件即可

    4、flume安装配置

    1)下载flume
    2)上传到Linux
    3)解压
    tar -zxvf apache-flume-1.6.0-bin.tar.gz -C /root/hd
    4)重命名
    mv apache-flume-1.6.0-bin/ flume
    cp flume-env.sh.template flume-env.sh
    5)修改配置
    vi flume-env.sh
    export JAVA_HOME=/root/hd/jdk1.8.0_192

    5、flume监听端口

    启动命令:
    bin/flume-ng agent –conf conf/log4j.properties –name a1 –conf-file conf/flumejob_telnet.conf

    我已经排坑了,这里我建议–conf 后面指定的路径建议是全路径,指定到log4j.properties或,我当时老师讲的是直接conf/,我实际操作是有问题的,不能实时的反馈

    bin/flume-ng agent 使用ng启动agent
    --conf conf/log4j.properties 指定配置所在的文件夹
    --name a1 指定的agent别名
    --conf-file conf/flumejob_telnet.conf 文件
    -Dflume.root.logger=INFO,console 日志级别

    flumejob_telnet.conf

    #smple.conf: A single-node Flume configuration
    # Name the components on this agent 定义变量方便调用 加s可以有多个此角色
    a1.sources = r1
    a1.sinks = k1
    a1.channels = c1
    # Describe/configure the source 描述source角色 进行内容定制
    # 此配置属于tcp source 必须是netcat类型
    a1.sources.r1.type = netcat
    a1.sources.r1.bind = localhost
    a1.sources.r1.port = 44444
    # Describe the sink 输出日志文件
    a1.sinks.k1.type = logger
    # Use a channel which buffers events in memory(file) 使用内存 总大小1000 每次传输100
    a1.channels.c1.type = memory
    a1.channels.c1.capacity = 1000
    a1.channels.c1.transactionCapacity = 100
    # Bind the source and sink to the channel 一个source可以绑定多个channel
    # 一个sinks可以只能绑定一个channel 使用的是图二的模型
    a1.sources.r1.channels = c1
    a1.sinks.k1.channel = c1
    [root@hsiehchou121 flume]# bin/flume-ng agent
    > --conf conf/
    > --name a1
    > --conf-file conf/flumejob_telnet.conf
    > -Dflume.root.logger=INFO.console

    yum search telnet
    yum install telnet.x86_64

    6、flume监听本地linux文件采集到hdfs

    启动命令:
    bin/flume-ng agent –conf conf/log4j.properties –name a1 –conf-file conf/flum
    ejob_hdfs.conf

    flumejob_hdfs.conf

    # Name the components on this agent agent别名设置
    a1.sources = r1
    a1.sinks = k1
    a1.channels = c1
    # Describe/configure the source 设置数据源监听本地文件配置
    # exec 执行一个命令的方式去查看文件 tail -F 实时查看
    a1.sources.r1.type = exec
    # 要执行的脚本command tail -F 默认10行 man tail 查看帮助
    a1.sources.r1.command = tail -F /tmp/root/hive.log
    # 执行这个command使用的是哪个脚本 -c 指定使用什么命令
    # whereis bash
    # bash: /usr/bin/bash /usr/share/man/man1/bash.1.gz
    a1.sources.r1.shell = /usr/bin/bash -c
    # Describe the sink
    a1.sinks.k1.type = hdfs
    a1.sinks.k1.hdfs.path = hdfs://hsiehchou121:9000/flume/%Y%m%d/%H
    #上传文件的前缀
    a1.sinks.k1.hdfs.filePrefix = logs-
    #是否按照时间滚动文件夹
    a1.sinks.k1.hdfs.round = true
    #多少时间单位创建一个新的文件夹 秒 (默认30s)
    a1.sinks.k1.hdfs.roundValue = 1
    #重新定义时间单位(每小时滚动一个文件夹)
    a1.sinks.k1.hdfs.roundUnit = minute
    #是否使用本地时间戳
    a1.sinks.k1.hdfs.useLocalTimeStamp = true
    #积攒多少个 Event 才 flush 到 HDFS 一次
    a1.sinks.k1.hdfs.batchSize = 500
    #设置文件类型,可支持压缩
    a1.sinks.k1.hdfs.fileType = DataStream
    #多久生成一个新的文件 秒
    a1.sinks.k1.hdfs.rollInterval = 30
    #设置每个文件的滚动大小 字节(最好128M,合理)
    a1.sinks.k1.hdfs.rollSize = 134217700
    #文件的滚动与 Event 数量无关
    a1.sinks.k1.hdfs.rollCount = 0
    #最小冗余数(备份数 生成滚动功能则生效roll hadoop本身有此功能 无需配置) 1份 不冗余 hdfs已经备份3份
    a1.sinks.k1.hdfs.minBlockReplicas = 1
    # Use a channel which buffers events in memory
    a1.channels.c1.type = memory
    a1.channels.c1.capacity = 1000
    a1.channels.c1.transactionCapacity = 100
    # Bind the source and sink to the channel
    a1.sources.r1.channels = c1
    a1.sinks.k1.channel = c1
    [root@hsiehchou121 flume]# bin/flume-ng agent
    > --conf conf/log4j.properties
    > --name a1
    > --conf-file conf/flumejob_hdfs.conf

    7、监听文件夹

    flumejob_dir.conf

    # 定义别名
    a1.sources = r1
    a1.sinks = k1
    a1.channels = c1
    # Describe/configure the source
    a1.sources.r1.type = spooldir
    # 监控的文件夹
    a1.sources.r1.spoolDir = /root/testdir
    # 上传成功后显示后缀名
    a1.sources.r1.fileSuffix = .COMPLETED
    # 如论如何 加绝对路径的文件名 默认false
    a1.sources.r1.fileHeader = true
    #忽略所有以.tmp 结尾的文件(正在被写入),不上传
    # ^以任何开头 出现无限次 以.tmp结尾的
    a1.sources.r1.ignorePattern = ([^ ]*.tmp)
    # Describe the sink 下沉到hdfs
    a1.sinks.k1.type = hdfs
    a1.sinks.k1.hdfs.path = hdfs://hsiehchou121:9000/flume/testdir/%Y%m%d/%H
    #上传文件的前缀
    a1.sinks.k1.hdfs.filePrefix = testdir-
    #是否按照时间滚动文件夹
    a1.sinks.k1.hdfs.round = true
    #多少时间单位创建一个新的文件夹
    a1.sinks.k1.hdfs.roundValue = 1
    #重新定义时间单位
    a1.sinks.k1.hdfs.roundUnit = hour
    #是否使用本地时间戳
    a1.sinks.k1.hdfs.useLocalTimeStamp = true
    #积攒多少个 Event 才 flush 到 HDFS 一次
    a1.sinks.k1.hdfs.batchSize = 100
    #设置文件类型,可支持压缩
    a1.sinks.k1.hdfs.fileType = DataStream
    #多久生成一个新的文件
    a1.sinks.k1.hdfs.rollInterval = 600
    #设置每个文件的滚动大小大概是 128M
    a1.sinks.k1.hdfs.rollSize = 134217700
    #文件的滚动与 Event 数量无关
    a1.sinks.k1.hdfs.rollCount = 0
    #最小副本数
    a1.sinks.k1.hdfs.minBlockReplicas = 1
    # Use a channel which buffers events in memory
    a1.channels.c1.type = memory
    a1.channels.c1.capacity = 1000
    a1.channels.c1.transactionCapacity = 100
    # Bind the source and sink to the channel
    a1.sources.r1.channels = c1
    a1.sinks.k1.channel = c1

    [root@hsiehchou121 conf]# bin/flume-ng agent –conf conf/log4j.properties –name a1 –conf-file conf/flumejob_dir.conf

    [root@hsiehchou121 flume]# bin/flume-ng agent
    > --conf conf/log4j.properties
    > --name a1
    > --conf-file conf/flumejob_dir.conf

    8、多个channel/sink

    需求:监控hive.log文件,用同时产生两个channel,一个channel对应的sink存储到hdfs中,另外一个channel对应的sink存储到本地
    flumejob_1.conf

    # name the components on this agent 别名设置
    a1.sources = r1
    a1.sinks = k1 k2
    a1.channels = c1 c2
    # 将数据流复制给多个 channel
    a1.sources.r1.selector.type = replicating
    # Describe/configure the source
    a1.sources.r1.type = exec
    a1.sources.r1.command = tail -F /tmp/root/hive.log
    a1.sources.r1.shell = /bin/bash -c
    # Describe the sink
    # 分两个端口发送数据
    a1.sinks.k1.type = avro
    a1.sinks.k1.hostname = hsiehchou121
    a1.sinks.k1.port = 4141
    a1.sinks.k2.type = avro
    a1.sinks.k2.hostname = hsiehchou121
    a1.sinks.k2.port = 4142
    # Describe the channel
    a1.channels.c1.type = memory
    a1.channels.c1.capacity = 1000
    a1.channels.c1.transactionCapacity = 100
    a1.channels.c2.type = memory
    a1.channels.c2.capacity = 1000
    a1.channels.c2.transactionCapacity = 100
    # Bind the source and sink to the channel
    a1.sources.r1.channels = c1 c2
    a1.sinks.k1.channel = c1
    a1.sinks.k2.channel = c2

    [root@hsiehchou121 flume]# bin/flume-ng agent –conf conf/log4j.properties –name a1 –conf-file conf/flumejob_1.conf

    flumejob_2.conf

    # Name the components on this agent
    a2.sources = r1
    a2.sinks = k1
    a2.channels = c1
    # Describe/configure the source
    a2.sources.r1.type = avro
    # 端口抓取数据
    a2.sources.r1.bind = hsiehchou121
    a2.sources.r1.port = 4141
    # Describe the sink
    a2.sinks.k1.type = hdfs
    a2.sinks.k1.hdfs.path = hdfs://hsiehchou121:9000/flume2/%Y%m%d/%H
    #上传文件的前缀
    a2.sinks.k1.hdfs.filePrefix = flume2-
    #是否按照时间滚动文件夹
    a2.sinks.k1.hdfs.round = true
    #多少时间单位创建一个新的文件夹
    a2.sinks.k1.hdfs.roundValue = 1
    #重新定义时间单位
    a2.sinks.k1.hdfs.roundUnit = hour
    #是否使用本地时间戳
    a2.sinks.k1.hdfs.useLocalTimeStamp = true
    #积攒多少个 Event 才 flush 到 HDFS 一次
    a2.sinks.k1.hdfs.batchSize = 100
    #设置文件类型,可支持压缩
    a2.sinks.k1.hdfs.fileType = DataStream
    #多久生成一个新的文件
    a2.sinks.k1.hdfs.rollInterval = 600
    #设置每个文件的滚动大小大概是 128M
    a2.sinks.k1.hdfs.rollSize = 134217700
    #文件的滚动与 Event 数量无关
    a2.sinks.k1.hdfs.rollCount = 0
    #最小副本数
    a2.sinks.k1.hdfs.minBlockReplicas = 1
    # Describe the channel
    a2.channels.c1.type = memory
    a2.channels.c1.capacity = 1000
    a2.channels.c1.transactionCapacity = 100
    # Bind the source and sink to the channel
    a2.sources.r1.channels = c1
    a2.sinks.k1.channel = c1

    [root@hsiehchou121 flume]# bin/flume-ng agent –conf conf/log4j.properties –name a2 –conf-file conf/flumejob_1.conf

    flumejob_3.conf

    # Name the components on this agent
    a3.sources = r1
    a3.sinks = k1
    a3.channels = c1
    # Describe/configure the source
    a3.sources.r1.type = avro
    a3.sources.r1.bind = hsiehchou121
    a3.sources.r1.port = 4142
    # Describe the sink
    a3.sinks.k1.type = file_roll
    a3.sinks.k1.sink.directory = /root/flume2
    # Describe the channel
    a3.channels.c1.type = memory
    a3.channels.c1.capacity = 1000
    a3.channels.c1.transactionCapacity = 100
    # Bind the source and sink to the channel
    a3.sources.r1.channels = c1
    a3.sinks.k1.channel = c1

    [root@hsiehchou121 flume]# bin/flume-ng agent –conf conf/log4j.properties –name a3 –conf-file conf/flumejob_1.conf

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  • 原文地址:https://www.cnblogs.com/hsiehchou/p/10502457.html
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