一、flume安装

[woek@hadoop1 software]$ tar -zxf apache-flume-1.7.0-bin.tar.gz -C /opt/module/
[woek@hadoop1 module]$ mv apache-flume-1.7.0-bin flume
[woek@hadoop1 conf]$ mv flume-env.sh.template flume-env.sh
[woek@hadoop1 conf]$ vi flume-env.sh

# 更改JAVA_HOME
export JAVA_HOME=/opt/module/jdk

二、Ganglia安装和部署

1.安装阿里云yum源

sudo wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

image.png

2.安装httpd服务与php

sudo yum -y install httpd php

3.安装其他依赖

sudo yum -y install rrdtool perl-rrdtool rrdtool-devel

sudo yum -y install apr-devel

4.安装ganglia

sudo rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

sudo yum -y install ganglia-gmetad

sudo yum -y install ganglia-gmetad

sudo yum install -y ganglia-gmond

• Ganglia由gmond、gmetad和gweb三部分组成

gmond（Ganglia Monitoring Daemon）是一种轻量级服务，安装在每台需要收集指标数据的节点主机上。使用gmond，你可以很容易收集很多系统指标数据，如CPU、内存、磁盘、网络和活跃进程的数据等。
gmetad（Ganglia Meta Daemon）整合所有信息，并将其以RRD格式存储至磁盘的服务。
gweb（Ganglia Web）Ganglia可视化工具，gweb是一种利用浏览器显示gmetad所存储数据的PHP前端。在Web界面中以图表方式展现集群的运行状态下收集的多种不同指标数据。

5.修改配置文件ganglia.conf

sudo vim /etc/httpd/conf.d/ganglia.conf

#
# Ganglia monitoring system php web frontend
#
Alias /ganglia /usr/share/ganglia
<Location /ganglia>
  Order deny,allow
  #Deny from all
  Allow from all
  # Allow from 127.0.0.1
  # Allow from ::1
  # Allow from .example.com
</Location>

6. 修改配置文件/etc/ganglia/gmetad.conf

sudo vim /etc/ganglia/gmetad.conf

data_source "hadoop1" 192.168.111.111

7.修改配置文件/etc/ganglia/gmond.conf

sudo vim /etc/ganglia/gmond.conf

cluster {
  name = "hadoop1"
  # mcast_join = 239.2.11.71
  host = 192.168.1111.111
  # mcast_join = 239.2.11.71
  bind = 192.168.1111.111
}

8. 修改配置文件/etc/selinux/config

sudo vim /etc/selinux/config

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
#     targeted - Targeted processes are protected,
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

• selinux本次生效关闭必须重启，如果此时不想重启，可以临时生效之

sudo setenforce 0

9.启动ganglia

sudo service httpd start
sudo service gmetad start
sudo service gmond start

10.打开网页浏览ganglia页面

http://192.168.111.111/ganglia

• 如果完成以上操作依然出现权限不足错误，请修改/var/lib/ganglia目录的权限：
  sudo chmod -R 777 /var/lib/ganglia

11.操作Flume测试监控

11.1修改/opt/module/flume/conf目录下的flume-env.sh配置：

JAVA_OPTS="-Dflume.monitoring.type=ganglia
-Dflume.monitoring.hosts=192.168.111.111:8649
-Xms100m
-Xmx200m"

11.2创建Flume Agent配置文件flume-netcat-logger.conf

[woek@hadoop1 flume]$  mkdir job
[woek@hadoop1 flume]$  cd job/
[woek@hadoop1 flume]$  touch flume-netcat-logger.conf
[woek@hadoop1 flume]$  vim flume-netcat-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 = netcat
a1.sources.r1.bind = localhost
a1.sources.r1.port = 44444

# Describe the sink
a1.sinks.k1.type = logger

# 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

11.3启动Flume任务

 bin/flume-ng agent \
--conf conf/ \
--name a1 \
--conf-file job/flume-netcat-logger.conf \
-Dflume.root.logger==INFO,console \
-Dflume.monitoring.type=ganglia \
-Dflume.monitoring.hosts=192.168.111.111:8649

11.4发送数据观察ganglia监测图

nc localhost 44444

Ganglia监控

• 监控名词解析