1 Ganglia的安装与部署
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 # yum -y install ganglia-web # yum install -y ganglia-gmond |
4) 修改配置文件
文件ganglia.conf：
| # vi /etc/httpd/conf.d/ganglia.conf 修改为： # # Ganglia monitoring system php web frontend #
Alias /ganglia /usr/share/ganglia
Order deny,allow Deny from all Allow from all # Allow from 127.0.0.1 # Allow from ::1 # Allow from .example.com |
文件gmetad.conf：
| # vi /etc/ganglia/gmetad.conf 修改为： data_source "linux" 192.168.216.20 |
文件gmond.conf：
| # vi /etc/ganglia/gmond.conf 修改为： cluster { name = "linux" 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 = 192.168.216.20 port = 8649 ttl = 1 } udp_recv_channel { # mcast_join = 239.2.11.71 port = 8649 bind = 192.168.216.20 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 } |
文件config：
| # vi /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 |
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：
| $ sudo setenforce 0 |
5) 启动ganglia
| $ sudo service httpd start $ sudo service gmetad start $ sudo service gmond start |
6) 打开网页浏览ganglia页面
| http://192.168.216.20/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：
| $ sudo chmod -R 777 /var/lib/ganglia |
2 操作Flume测试监控
1) 修改flume-env.sh配置：
| JAVA_OPTS="-Dflume.monitoring.type=ganglia -Dflume.monitoring.hosts=192.168.216.20:8649 -Xms100m -Xmx200m" |
2) 启动flume任务
| $ bin/flume-ng agent --conf conf/ --name a1 --conf-file job/group-job0/flume-telnet.conf -Dflume.root.logger==INFO,console -Dflume.monitoring.type=ganglia -Dflume.monitoring.hosts=192.168.216.20:8649 |
3) 发送数据观察ganglia监测图
| $ telnet localhost 44444 |
样式如图：
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 |
