(5)Flume监控之Ganglia

文章目录

• • 
    
• ​​安装​​
• ​​操作Flume测试监控​​
  • 
    

Ganglia : 发音 干个你儿

安装

1. 安装httpd服务与php

yum -y install httpd php

2. 安装其他依赖

yum -y install rrdtool perl-rrdtool rrdtool-devel
yum -y install apr-devel

3. 安装ganglia

rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
 yum -y install ganglia-gmetad

出现报错

Error: Cannot retrieve metalink for repository: epel. Please verify its path and try again

重新执行

yum -y install ganglia-gmetad 
yum -y install ganglia-web
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。

4. 修改配置文件/etc/httpd/conf.d/ganglia.conf

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

注释掉其他的,增加Allow from all

#
# Ganglia monitoring system php web frontend
#

Alias /ganglia /usr/share/ganglia

<Location /ganglia>
  Order deny,allow
 # Deny from all
 # Allow from 127.0.0.1
  Allow from all
 # Allow from ::1
 # Allow from .example.com
</Location>

5. 修改配置文件/etc/ganglia/gmetad.conf

vim /etc/ganglia/gmetad.conf

修改为：

data_source "note01" 192.168.18.100

6. 修改配置文件/etc/ganglia/gmond.conf

vim /etc/ganglia/gmond.conf

修改为：

name 修改自己域名,注释 # mcast_join udp_send_channel 增加host,udp_recv_channel 增加bind

cluster {
  name = "note01"
  owner = "unspecified"
  latlong = "unspecified"
  url = "unspecified"
}

/* The host section describes attributes of the host, like the location */
host {
  location = "unspecified"
}

/* Feel free to specify as many udp_send_channels as you like.  Gmond
   used to only support having a single channel */
udp_send_channel {
  #bind_hostname = yes # Highly recommended, soon to be default.
                       # This option tells gmond to use a source address
                       # that resolves to the machine's hostname.  Without
                       # this, the metrics may appear to come from any
                       # interface and the DNS names associated with
                       # those IPs will be used to create the RRDs.
 # mcast_join = 239.2.11.71
  host = 192.168.18.100
  port = 8649
  ttl = 1
}

/* You can specify as many udp_recv_channels as you like as well. */
udp_recv_channel {
 # mcast_join = 239.2.11.71
  bind = 192.168.18.100
  port = 8649
  bind = 239.2.11.71
  retry_bind = true
  # Size of the UDP buffer. If you are handling lots of metrics you really
  # should bump it up to e.g. 10MB or even higher.
  # buffer = 10485760
}

7. 修改配置文件/etc/selinux/config

vim /etc/selinux/config

修改

SELINUX=disabled

尖叫提示：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：

setenforce 0

8. 启动ganglia

service httpd start
service gmetad start
 service gmond start

访问 http://192.168.18.100/ganglia/

尖叫提示：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：

chmod -R 777 /var/lib/ganglia

操作Flume测试监控

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=192.168.1.102:8649
-Xms100m
-Xmx200m"

2. 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=192.168.18.100:8649

3. 发送数据观察ganglia监测图

图例说明：