一. 安装Ganglia
1. 安装httpd服务与php
sudo yum -y install httpd php
2. 安装其他依赖
sudo yum -y install rrdtool perl-rrdtool rrdtool-develsudo yum -y install apr-devel
3. 安装ganglia
sudo rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpmsudo yum -y install ganglia-gmetad sudo yum -y install ganglia-websudo 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
sudo vim /etc/httpd/conf.d/ganglia.conf
#修改为
# 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>
sudo vim /etc/ganglia/gmetad.conf
#修改为
data_source "hadoop100" 192.168.1.100
sudo vim /etc/ganglia/gmond.conf
#修改为
cluster {
name = "hadoop100"
owner = "unspecified"
latlong = "unspecified"
url = "unspecified"
}
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 = 192.168.1.100
port =
ttl =
}
udp_recv_channel {
# mcast_join = 239.2.11.71
port =
bind = 192.168.1.100
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 =
}
sudo vim /etc/selinux/config
#修改为
# 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
#脱裤提醒 : 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
5. 启动ganglia
sudo service httpd startsudo service gmetad startsudo service gmond start
6. 打开ganglia浏览页面
脱裤提示: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:
sudo chmod -R /var/lib/ganglia
二. 操作Flume测试监控
1. 修改配置文件
#修改/opt/module/flume/conf目录下的flume-env.sh配置:
JAVA_OPTS="-Dflume.monitoring.type=ganglia
-Dflume.monitoring.hosts=192.168.1.100:
-Xms100m
-Xmx200m"
2. 启动Flume任务
bin/flume-ng agent
--conf conf/--name a1
--conf-file jobs/flume-netcat-logger.conf
-Dflume.root.logger==INFO,console
-Dflume.monitoring.type=ganglia
-Dflume.monitoring.hosts=192.168.1.100:
3. 发送数据观察ganglia监测图
nc localhost
图例说明:
字段(图表名称) |
字段含义 |
EventPutAttemptCount |
source尝试写入channel的事件总数量 |
EventPutSuccessCount |
成功写入channel且提交的事件总数量 |
EventTakeAttemptCount |
sink尝试从channel拉取事件的总数量。这不意味着每次事件都被返回,因为sink拉取的时候channel可能没有任何数据。 |
EventTakeSuccessCount |
sink成功读取的事件的总数量 |
StartTime |
channel启动的时间(毫秒) |
StopTime |
channel停止的时间(毫秒) |
ChannelSize |
目前channel中事件的总数量 |
ChannelFillPercentage |
channel占用百分比 |
ChannelCapacity |
channel的容量 |