Day 06 Flume
1. Flume 介绍
1.1. 概述
Flume是一个分布式、可靠、和高可用的海量日志采集、聚合和传输的系统。
Flume可以采集文件，socket数据包、文件、文件夹、kafka等各种形式源数据，又可以将采集到
的数据(下沉sink)输出到HDFS、hbase、hive、kafka等众多外部存储系统中
一般的采集需求，通过对flflume的简单配置即可实现
Flume针对特殊场景也具备良好的自定义扩展能力，
因此，flflume可以适用于大部分的日常数据采集场景
1.2. 运行机制
1. Flume分布式系统中最核心的角色是agent，flflume采集系统就是由一个个agent所连接起来形成
2. 每一个agent相当于一个数据传递员，内部有三个组件：
1. Source：采集组件，用于跟数据源对接，以获取数据
2. Sink：下沉组件，用于往下一级agent传递数据或者往最终存储系统传递数据
3. Channel：传输通道组件，用于从source将数据传递到sink
1.3. Flume 结构图
简单结构
单个 Agent 采集数据复杂结构
多级 Agent 之间串联
2. Flume 实战案例
案例：使用网络telent命令向一台机器发送一些网络数据，然后通过flflume采集网络端口数据2.1. Flume 的安装部署
Step 1: 下载解压修改配置文件
下载地址：
http://archive.apache.org/dist/flflume/1.8.0/apache-flflume-1.8.0-bin.tar.gz
Flume的安装非常简单，只需要解压即可，当然，前提是已有hadoop环境
上传安装包到数据源所在节点上
这里我们采用在第三台机器来进行安装
cd /export/softwares/
tar -zxvf apache-flume-1.8.0-bin.tar.gz -C ../servers/
cd /export/servers/apache-flume-1.8.0-bin/conf
cp flume-env.sh.template flume-env.sh
vim flume-env.sh
export JAVA_HOME=/export/servers/jdk1.8.0_141
Step 2: 开发配置文件
根据数据采集的需求配置采集方案，描述在配置文件中(文件名可任意自定义)
配置我们的网络收集的配置文件
在flflume的conf目录下新建一个配置文件（采集方案）
vim /export/servers/apache-flume-1.8.0-bin/conf/netcat-logger.conf# 定义这个agent中各组件的名字
a1.sources = r1
a1.sinks = k1
a1.channels = c1
# 描述和配置source组件：r1
a1.sources.r1.type = netcat
a1.sources.r1.bind = 192.168.174.
a1.sources.r1.port = 44444
# 描述和配置sink组件：k1
a1.sinks.k1.type = logger
# 描述和配置channel组件，此处使用是内存缓存的方式
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100
# 描述和配置source channel sink之间的连接关系
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1
Step 3: 启动配置文件
指定采集方案配置文件，在相应的节点上启动flflume agent
先用一个最简单的例子来测试一下程序环境是否正常
启动agent去采集数据
bin/flume-ng agent -c conf -f conf/netcat-logger.conf -n a1 -Dflume.root.logger=INFO,c
-c conf 指定flflume自身的配置文件所在目录
-f conf/netcat-logger.con 指定我们所描述的采集方案
-n a1 指定我们这个agent的名字
Step 4: 安装 Telnet 准备测试
在node02机器上面安装telnet客户端，用于模拟数据的发送
yum -y install telnet
telnet node03 44444 # 使用telnet模拟数据发送
2.2. 采集案例
2.2.3. 采集目录到 HDFS需求
某服务器的某特定目录下，会不断产生新的文件，每当有新文件出现，就需要把文件采集到HDFS中去
思路
根据需求，首先定义以下3大要素
1. 数据源组件，即source ——监控文件目录 : spooldir
1. 监视一个目录，只要目录中出现新文件，就会采集文件中的内容
2. 采集完成的文件，会被agent自动添加一个后缀：COMPLETED
3. 所监视的目录中不允许重复出现相同文件名的文件
2. 下沉组件，即sink——HDFS文件系统 : hdfs sink
3. 通道组件，即channel——可用fifile channel 也可以用内存channel
Step 1: Flume 配置文件
cd /export/servers/apache-flume-1.8.0-bin/conf
mkdir -p /export/servers/dirfile
vim spooldir.conf# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1
# Describe/configure the source
##注意：不能往监控目中重复丢同名文件
a1.sources.r1.type = spooldir
a1.sources.r1.spoolDir = /export/servers/dirfile
a1.sources.r1.fileHeader = true
# Describe the sink
a1.sinks.k1.type = hdfs
a1.sinks.k1.channel = c1
a1.sinks.k1.hdfs.path = hdfs://node01:8020/spooldir/files/%y-%m-%d/%H%M/
a1.sinks.k1.hdfs.filePrefix = events-
a1.sinks.k1.hdfs.round = true
a1.sinks.k1.hdfs.roundValue = 10
a1.sinks.k1.hdfs.roundUnit = minute
a1.sinks.k1.hdfs.rollInterval = 3
a1.sinks.k1.hdfs.rollSize = 20
a1.sinks.k1.hdfs.rollCount = 5
a1.sinks.k1.hdfs.batchSize = 1
a1.sinks.k1.hdfs.useLocalTimeStamp = true
#生成的文件类型，默认是Sequencefile，可用DataStream，则为普通文本
a1.sinks.k1.hdfs.fileType = DataStream
# 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
Channel参数解释
capacity：默认该通道中最大的可以存储的event数量
trasactionCapacity：每次最大可以从source中拿到或者送到sink中的event数量
keep-alive：event添加到通道中或者移出的允许时间
Step 2: 启动 Flume
bin/flume-ng agent -c ./conf -f ./conf/spooldir.conf -n a1 -Dflume.root.logger=INFO,con
Step 3: 上传文件到指定目录
将不同的文件上传到下面目录里面去，注意文件不能重名
cd /export/servers/dirfile
2.2.4. 采集文件到 HDFS需求
比如业务系统使用log4j生成的日志，日志内容不断增加，需要把追加到日志文件中的数据实时采集到
hdfs
分析
根据需求，首先定义以下3大要素
采集源，即source——监控文件内容更新 : exec ‘tail -F fifile’
下沉目标，即sink——HDFS文件系统 : hdfs sink
Source和sink之间的传递通道——channel，可用fifile channel 也可以用 内存channel
Step 1: 定义 Flume 配置文件
cd /export/servers/apache-flume-1.8.0-bin/conf
vim tail-file.confagent1.sources = source1
agent1.sinks = sink1
agent1.channels = channel1
# Describe/configure tail -F source1
agent1.sources.source1.type = exec
agent1.sources.source1.command = tail -F /export/servers/taillogs/access_log
agent1.sources.source1.channels = channel1
# Describe sink1
agent1.sinks.sink1.type = hdfs
#a1.sinks.k1.channel = c1
agent1.sinks.sink1.hdfs.path = hdfs://node01:8020/weblog/flume-collection/%y-%m-%d/%H-%
agent1.sinks.sink1.hdfs.filePrefix = access_log
agent1.sinks.sink1.hdfs.maxOpenFiles = 5000
agent1.sinks.sink1.hdfs.batchSize= 100
agent1.sinks.sink1.hdfs.fileType = DataStream
agent1.sinks.sink1.hdfs.writeFormat =Text
agent1.sinks.sink1.hdfs.round = true
agent1.sinks.sink1.hdfs.roundValue = 10
agent1.sinks.sink1.hdfs.roundUnit = minute
agent1.sinks.sink1.hdfs.useLocalTimeStamp = true
# Use a channel which buffers events in memory
agent1.channels.channel1.type = memory
agent1.channels.channel1.keep-alive = 120
agent1.channels.channel1.capacity = 500000
agent1.channels.channel1.transactionCapacity = 600
# Bind the source and sink to the channel
agent1.sources.source1.channels = channel1
agent1.sinks.sink1.channel = channel1
Step 2: 启动 Flume
cd /export/servers/apache-flume-1.6.0-cdh5.14.0-bin
bin/flume-ng agent -c conf -f conf/tail-file.conf -n agent1 -Dflume.root.logger=INFO,c
Step 3: 开发 Shell 脚本定时追加文件内容
mkdir -p /export/servers/shells/
cd /export/servers/shells/
vim tail-file.sh#!/bin/bash
while true
do
date >> /export/servers/taillogs/access_log;
sleep 0.5;
done
Step 4: 启动脚本
# 创建文件夹
mkdir -p /export/servers/taillogs
# 启动脚本
sh /export/servers/shells/tail-file.sh
2.2.5. Agent 级联分析
第一个agent负责收集文件当中的数据，通过网络发送到第二个agent当中去
第二个agent负责接收第一个agent发送的数据，并将数据保存到hdfs上面去
Step 1: Node02 安装 Flume
将node03机器上面解压后的flflume文件夹拷贝到node02机器上面去
cd /export/servers
scp -r apache-flume-1.8.0-bin/ node02:$PWD
Step 2: Node02 配置 Flume
在node02机器配置我们的flflume
cd /export/servers/ apache-flume-1.8.0-bin/conf
vim tail-avro-avro-logger.conf##################
# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1
# Describe/configure the source
a1.sources.r1.type = exec
a1.sources.r1.command = tail -F /export/servers/taillogs/access_log
a1.sources.r1.channels = c1
# Describe the sink
##sink端的avro是一个数据发送者
a1.sinks = k1
a1.sinks.k1.type = avro
a1.sinks.k1.channel = c1
a1.sinks.k1.hostname = 192.168.174.120
a1.sinks.k1.port = 4141
a1.sinks.k1.batch-size = 10
# Use a channel which buffers events in memory
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100
# Bind the source and sink to the channel
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1
Step 3: 开发脚本向文件中写入数据
直接将node03下面的脚本和数据拷贝到node02即可，node03机器上执行以下命令
cd /export/servers
scp -r shells/ taillogs/ node02:$PWD
Step 4: Node03 Flume 配置文件
在node03机器上开发flflume的配置文件
cd /export/servers/apache-flume-1.8.0-bin/conf
vim avro-hdfs.conf# Name the components on this agent
a1.sources = r1
a1.sinks = k1
a1.channels = c1
# Describe/configure the source
##source中的avro组件是一个接收者服务
a1.sources.r1.type = avro
a1.sources.r1.channels = c1
a1.sources.r1.bind = 192.168.174.120
a1.sources.r1.port = 4141
# Describe the sink
a1.sinks.k1.type = hdfs
a1.sinks.k1.hdfs.path = hdfs://node01:8020/av /%y-%m-%d/%H%M/
a1.sinks.k1.hdfs.filePrefix = events-
a1.sinks.k1.hdfs.round = true
a1.sinks.k1.hdfs.roundValue = 10
a1.sinks.k1.hdfs.roundUnit = minute
a1.sinks.k1.hdfs.rollInterval = 3
a1.sinks.k1.hdfs.rollSize = 20
a1.sinks.k1.hdfs.rollCount = 5
a1.sinks.k1.hdfs.batchSize = 1
a1.sinks.k1.hdfs.useLocalTimeStamp = true
#生成的文件类型，默认是Sequencefile，可用DataStream，则为普通文本
a1.sinks.k1.hdfs.fileType = DataStream
# 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
Step 5: 顺序启动
node03机器启动flflume进程
cd /export/servers/apache-flume-1.8.0-bin
bin/flume-ng agent -c conf -f conf/avro-hdfs.conf -n a1 -Dflume.root.logger=INFO,conso
node02机器启动flflume进程
cd /export/servers/apache-flume-1.8.0-bin/
bin/flume-ng agent -c conf -f conf/tail-avro-avro-logger.conf -n a1 -Dflume.root.logge
node02机器启shell脚本生成文件
cd /export/servers/shells
sh tail-file.sh3. 高可用方案
在完成单点的Flume NG搭建后，下面我们搭建一个高可用的Flume NG集群，架构图如下所示：
3.1. 角色分配
Flume的Agent和Collector分布如下表所示：
名称
HOST
角色
Agent1
node01
Web Server
Collector1
node02
AgentMstr1
Collector2
node03
AgentMstr2
图中所示，Agent1数据分别流入到Collector1和Collector2，Flume NG本身提供了Failover机制，可以
自动切换和恢复。在上图中，有3个产生日志服务器分布在不同的机房，要把所有的日志都收集到一个
集群中存储。下 面我们开发配置Flume NG集群
3.2. Node01 安装和配置
将node03机器上面的flflume安装包以及文件生产的两个目录拷贝到node01机器上面去
node03机器执行以下命令
cd /export/servers
scp -r apache-flume-1.8.0-bin/ node01:$PWD
scp -r shells/ taillogs/ node01:$PWD
node01机器配置agent的配置文件
cd /export/servers/apache-flume-1.8.0-bin/conf
vim agent.conf#agent1 name
agent1.channels = c1
agent1.sources = r1
agent1.sinks = k1 k2
#
##set gruop
agent1.sinkgroups = g1
#
agent1.sources.r1.channels = c1
agent1.sources.r1.type = exec
agent1.sources.r1.command = tail -F /export/servers/taillogs/access_log
#
##set channel
agent1.channels.c1.type = memory
agent1.channels.c1.capacity = 1000
agent1.channels.c1.transactionCapacity = 100
#
## set sink1
agent1.sinks.k1.channel = c1
agent1.sinks.k1.type = avro
agent1.sinks.k1.hostname = node02
agent1.sinks.k1.port = 52020
#
## set sink2
agent1.sinks.k2.channel = c1
agent1.sinks.k2.type = avro
agent1.sinks.k2.hostname = node03
agent1.sinks.k2.port = 52020
#
##set sink group
agent1.sinkgroups.g1.sinks = k1 k2
#
##set failover
agent1.sinkgroups.g1.processor.type = failover
agent1.sinkgroups.g1.processor.priority.k1 = 10
agent1.sinkgroups.g1.processor.priority.k2 = 1
agent1.sinkgroups.g1.processor.maxpenalty = 10000
3.3. Node02 与 Node03 配置 FlumeCollection
node02机器修改配置文件
cd /export/servers/apache-flume-1.8.0-bin/conf
vim collector.conf#set Agent name
a1.sources = r1
a1.channels = c1
a1.sinks = k1
#
##set channel
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100
#
## other node,nna to nns
a1.sources.r1.type = avro
a1.sources.r1.bind = node02
a1.sources.r1.port = 52020
a1.sources.r1.channels = c1
#
##set sink to hdfs
a1.sinks.k1.type=hdfs
a1.sinks.k1.hdfs.path= hdfs://node01:8020/flume/failover/
a1.sinks.k1.hdfs.fileType=DataStream
a1.sinks.k1.hdfs.writeFormat=TEXT
a1.sinks.k1.hdfs.rollInterval=10
a1.sinks.k1.channel=c1
a1.sinks.k1.hdfs.filePrefix=%Y-%m-%d
#
node03机器修改配置文件
cd /export/servers/apache-flume-1.8.0-bin/conf
vim collector.conf#set Agent name
a1.sources = r1
a1.channels = c1
a1.sinks = k1
#
##set channel
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100
#
## other node,nna to nns
a1.sources.r1.type = avro
a1.sources.r1.bind = node03
a1.sources.r1.port = 52020
a1.sources.r1.channels = c1
#
##set sink to hdfs
a1.sinks.k1.type=hdfs
a1.sinks.k1.hdfs.path= hdfs://node01:8020/flume/failover/
a1.sinks.k1.hdfs.fileType=DataStream
a1.sinks.k1.hdfs.writeFormat=TEXT
a1.sinks.k1.hdfs.rollInterval=10
a1.sinks.k1.channel=c1
a1.sinks.k1.hdfs.filePrefix=%Y-%m-%d
3.4. 顺序启动
node03机器上面启动flflume
cd /export/servers/apache-flume-1.8.0-bin
bin/flume-ng agent -n a1 -c conf -f conf/collector.conf -Dflume.root.logger=DEBUG,conso
node02机器上面启动flflume
cd /export/servers/apache-flume-1.8.0-bin
bin/flume-ng agent -n a1 -c conf -f conf/collector.conf -Dflume.root.logger=DEBUG,conso
node01机器上面启动flflume
cd /export/servers/apache-flume-1.8.0-bin
bin/flume-ng agent -n agent1 -c conf -f conf/agent.conf -Dflume.root.logger=DEBUG,conso
node01机器启动文件产生脚本
cd /export/servers/shells
sh tail-file.sh3.5. Failover 测试
下面我们来测试下Flume NG集群的高可用（故障转移）。场景如下：我们在Agent1节点上传文件，由
于我们配置Collector1的权重比Collector2大，所以 Collector1优先采集并上传到存储系统。然后我们
kill掉Collector1，此时有Collector2负责日志的采集上传工作，之后，我 们手动恢复Collector1节点的
Flume服务，再次在Agent1上次文件，发现Collector1恢复优先级别的采集工作。具体截图如下所 示：
Collector1优先上传
HDFS集群中上传的log内容预览
Collector1宕机，Collector2获取优先上传权限
重启Collector1服务，Collector1重新获得优先上传的权限
4. Flume 的负载均衡
负载均衡是用于解决一台机器(一个进程)无法解决所有请求而产生的一种算法。Load balancing Sink
Processor 能够实现 load balance 功能，如下图Agent1 是一个路由节点，负责将 Channel 暂存的
Event 均衡到对应的多个 Sink组件上，而每个 Sink 组件分别连接到一个独立的 Agent 上，示例配置，
如下所示：在此处我们通过三台机器来进行模拟flflume的负载均衡
三台机器规划如下：
node01：采集数据，发送到node02和node03机器上去
node02：接收node01的部分数据
node03：接收node01的部分数据
第一步：开发node01服务器的flflume配置
node01服务器配置：
cd /export/servers/apache-flume-1.8.0-bin/conf
vim load_banlancer_client.conf# agent name
<p class="mume-header " id="agent-name"></p>
a1.channels = c1
a1.sources = r1
a1.sinks = k1 k2
# set gruop
<p class="mume-header " id="set-gruop"></p>
a1.sinkgroups = g1
# set channel
<p class="mume-header " id="set-channel"></p>
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100
a1.sources.r1.channels = c1
a1.sources.r1.type = exec
a1.sources.r1.command = tail -F /export/servers/taillogs/access_log
# set sink1
<p class="mume-header " id="set-sink1"></p>
a1.sinks.k1.channel = c1
a1.sinks.k1.type = avro
a1.sinks.k1.hostname = node02
a1.sinks.k1.port = 52020
# set sink2
<p class="mume-header " id="set-sink2"></p>
a1.sinks.k2.channel = c1
a1.sinks.k2.type = avroa1.sinks.k2.hostname = node03
a1.sinks.k2.port = 52020
# set sink group
<p class="mume-header " id="set-sink-group"></p>
a1.sinkgroups.g1.sinks = k1 k2
# set failover
<p class="mume-header " id="set-failover"></p>
a1.sinkgroups.g1.processor.type = load_balance
a1.sinkgroups.g1.processor.backoff = true
a1.sinkgroups.g1.processor.selector = round_robin
a1.sinkgroups.g1.processor.selector.maxTimeOut=10000
第二步：开发node02服务器的flflume配置
cd /export/servers/apache-flume-1.8.0-bin/conf
vim load_banlancer_server.conf# Name the components on this agent
<p class="mume-header " id="name-the-components-on-this-agent"></p>
a1.sources = r1
a1.sinks = k1
a1.channels = c1
# Describe/configure the source
<p class="mume-header " id="describeconfigure-the-source"></p>
a1.sources.r1.type = avro
a1.sources.r1.channels = c1
a1.sources.r1.bind = node02
a1.sources.r1.port = 52020
# Describe the sink
<p class="mume-header " id="describe-the-sink"></p>
a1.sinks.k1.type = logger
# Use a channel which buffers events in memory
<p class="mume-header " id="use-a-channel-which-buffers-events-in-memory"></p>
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100
# Bind the source and sink to the channel
<p class="mume-header " id="bind-the-source-and-sink-to-the-channel"></p>
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1第三步：开发node03服务器flflume配置
node03服务器配置
cd /export/servers/apache-flume-1.8.0-bin/conf
vim load_banlancer_server.conf# Name the components on this agent
<p class="mume-header " id="name-the-components-on-this-agent-1"></p>
a1.sources = r1
a1.sinks = k1
a1.channels = c1
# Describe/configure the source
<p class="mume-header " id="describeconfigure-the-source-1"></p>
a1.sources.r1.type = avro
a1.sources.r1.channels = c1
a1.sources.r1.bind = node03
a1.sources.r1.port = 52020
# Describe the sink
<p class="mume-header " id="describe-the-sink-1"></p>
a1.sinks.k1.type = logger
# Use a channel which buffers events in memory
<p class="mume-header " id="use-a-channel-which-buffers-events-in-memory-1"></p>
a1.channels.c1.type = memory
a1.channels.c1.capacity = 1000
a1.channels.c1.transactionCapacity = 100
# Bind the source and sink to the channel
<p class="mume-header " id="bind-the-source-and-sink-to-the-channel-1"></p>
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1第四步：准备启动flflume服务
启动node03的flflume服务
cd /export/servers/apache-flume-1.8.0-bin
bin/flume-ng agent -n a1 -c conf -f conf/load_banlancer_server.conf -Dflume.root.logger
启动node02的flflume服务
cd /export/servers/apache-flume-1.8.0-bin
bin/flume-ng agent -n a1 -c conf -f conf/load_banlancer_server.conf -Dflume.root.logger
启动node01的flflume服务
cd /export/servers/apache-flume-1.8.0-bin
bin/flume-ng agent -n a1 -c conf -f conf/load_banlancer_client.conf -Dflume.root.logger
第五步：node01服务器运行脚本产生数据
cd /export/servers/shells
sh tail-fifile.sh
5. Flume 案例一
1. 案例场景
A、B两台日志服务机器实时生产日志主要类型为access.log、nginx.log、web.log
现在要求：
把A、B 机器中的access.log、nginx.log、web.log 采集汇总到C机器上然后统一收集到hdfs中。
但是在hdfs中要求的目录为：
/source/logs/access/20180101/**
/source/logs/nginx/20180101/**
/source/logs/web/20180101/**
2. 场景分析图一
3. 数据流程处理分析
4、实现
服务器A对应的IP为 192.168.174.100
服务器B对应的IP为 192.168.174.110
服务器C对应的IP为 192.168.174.120
采集端配置文件开发
node01与node02服务器开发flflume的配置文件
cd /export/servers/apache-flume-1.6.0-cdh5.14.0-bin/conf
vim exec_source_avro_sink.conf# Name the components on this agent
<p class="mume-header " id="name-the-components-on-this-agent-2"></p>
a1.sources = r1 r2 r3
a1.sinks = k1
a1.channels = c1
# Describe/configure the source
<p class="mume-header " id="describeconfigure-the-source-2"></p>
a1.sources.r1.type = exec
a1.sources.r1.command = tail -F /export/servers/taillogs/access.log
a1.sources.r1.interceptors = i1
a1.sources.r1.interceptors.i1.type = static
## static拦截器的功能就是往采集到的数据的header中插入自己定## 义的key-value对
<p class="mume-header " id="static拦截器的功能就是往采集到的数据的header中插入自己定-义的key-va
a1.sources.r1.interceptors.i1.key = type
a1.sources.r1.interceptors.i1.value = access
a1.sources.r2.type = exec
a1.sources.r2.command = tail -F /export/servers/taillogs/nginx.log
a1.sources.r2.interceptors = i2
a1.sources.r2.interceptors.i2.type = static
a1.sources.r2.interceptors.i2.key = type
a1.sources.r2.interceptors.i2.value = nginx
a1.sources.r3.type = exec
a1.sources.r3.command = tail -F /export/servers/taillogs/web.log
a1.sources.r3.interceptors = i3
a1.sources.r3.interceptors.i3.type = static
a1.sources.r3.interceptors.i3.key = type
a1.sources.r3.interceptors.i3.value = web
# Describe the sink
<p class="mume-header " id="describe-the-sink-2"></p>
a1.sinks.k1.type = avro
a1.sinks.k1.hostname = node03
a1.sinks.k1.port = 41414
# Use a channel which buffers events in memory
<p class="mume-header " id="use-a-channel-which-buffers-events-in-memory-2"></p>
a1.channels.c1.type = memory
a1.channels.c1.capacity = 20000
a1.channels.c1.transactionCapacity = 10000
# Bind the source and sink to the channel
<p class="mume-header " id="bind-the-source-and-sink-to-the-channel-2"></p>
a1.sources.r1.channels = c1
a1.sources.r2.channels = c1
a1.sources.r3.channels = c1
a1.sinks.k1.channel = c1服务端配置文件开发
在node03上面开发flflume配置文件
cd /export/servers/apache-flume-1.6.0-cdh5.14.0-bin/conf
vim avro_source_hdfs_sink.confa1.sources = r1
a1.sinks = k1
a1.channels = c1
# 定义source
<p class="mume-header " id="定义source"></p>
a1.sources.r1.type = avro
a1.sources.r1.bind = 192.168.174.120
a1.sources.r1.port =41414
# 添加时间拦截器
<p class="mume-header " id="添加时间拦截器"></p>
a1.sources.r1.interceptors = i1
a1.sources.r1.interceptors.i1.type = org.apache.flume.interceptor.TimestampInterceptor$
# 定义channels
<p class="mume-header " id="定义channels"></p>
a1.channels.c1.type = memory
a1.channels.c1.capacity = 20000
a1.channels.c1.transactionCapacity = 10000
# 定义sink
<p class="mume-header " id="定义sink"></p>
a1.sinks.k1.type = hdfs
a1.sinks.k1.hdfs.path=hdfs://192.168.174.100:8020/source/logs/%{type}/%Y%m%d
a1.sinks.k1.hdfs.filePrefix =events
a1.sinks.k1.hdfs.fileType = DataStream
a1.sinks.k1.hdfs.writeFormat = Text
# 时间类型
<p class="mume-header " id="时间类型"></p>
a1.sinks.k1.hdfs.useLocalTimeStamp = true
# 生成的文件不按条数生成
<p class="mume-header " id="生成的文件不按条数生成"></p>
a1.sinks.k1.hdfs.rollCount = 0
# 生成的文件按时间生成
<p class="mume-header " id="生成的文件按时间生成"></p>
a1.sinks.k1.hdfs.rollInterval = 30
# 生成的文件按大小生成
<p class="mume-header " id="生成的文件按大小生成"></p>
a1.sinks.k1.hdfs.rollSize = 10485760
# 批量写入hdfs的个数
<p class="mume-header " id="批量写入hdfs的个数"></p>
a1.sinks.k1.hdfs.batchSize = 10000
# flume操作hdfs的线程数（包括新建，写入等）
<p class="mume-header " id="flume操作hdfs的线程数包括新建写入等"></p>
a1.sinks.k1.hdfs.threadsPoolSize=10
# 操作hdfs超时时间<p class="mume-header " id="操作hdfs超时时间"></p>
a1.sinks.k1.hdfs.callTimeout=30000
# 组装source、channel、sink
<p class="mume-header " id="组装source-channel-sink"></p>
a1.sources.r1.channels = c1
a1.sinks.k1.channel = c1
采集端文件生成脚本
在node01与node02上面开发shell脚本，模拟数据生成
cd /export/servers/shells
vim server.sh
# !/bin/bash
<p class="mume-header " id="binbash"></p>
while true
do
date >> /export/servers/taillogs/access.log;
date >> /export/servers/taillogs/web.log;
date >> /export/servers/taillogs/nginx.log;
sleep 0.5;
done
顺序启动服务
node03启动flflume实现数据收集
cd /export/servers/apache-flume-1.6.0-cdh5.14.0-bin
bin/flume-ng agent -c conf -f conf/avro_source_hdfs_sink.conf -name a1 -Dflume.root.log
node01与node02启动flflume实现数据监控cd /export/servers/apache-flume-1.6.0-cdh5.14.0-bin
bin/flume-ng agent -c conf -f conf/exec_source_avro_sink.conf -name a1 -Dflume.root.log
node01与node02启动生成文件脚本
cd /export/servers/shells
sh server.sh
5、项目实现截图
6. Flume 案例二