Ganglia 的安装和出错权限问题解决

Flume 数据流监控 Ganglia 的安装与部署

1） 安装 httpd 服务与 php

[xiaofa@hadoop102 flume]$ sudo yum -y install httpd php

2） 安装其他依赖

[xiaofa@hadoop102 flume]$ sudo yum -y install rrdtool perl-rrdtool rrdtool-devel
[xiaofa@hadoop102 flume]$ sudo yum -y install apr-devel

3) 安装ganglia 因为CentOs默认源是没有Ganglia源的
所以需要安装一下这个 yum -y install epel-release

[xiaofa@hadoop102 flume]$ sudo yum -y install ganglia-gmetad

[xiaofa@hadoop102 flume]$ sudo yum -y install ganglia-web

[xiaofa@hadoop102 flume]$ sudo yum install -y ganglia-gmond

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

[xiaofa@hadoop102 flume]$ sudo vi /etc/httpd/conf.d/ganglia.conf

Alias /ganglia /usr/share/ganglia

	       Require all granted
               Allow from all
	#  Order deny,allow
	#  Deny from all
	#  Allow from ::1
   # Allow from .example.com

5） 修改配置文件/etc/ganglia/gmetad.conf

data_source "master" 192.168.148.81

6)修改配置文件/etc/ganglia/gmond.conf

修改为：
cluster {
	name = "master" 
	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 # 数据发送给 master
	host = 192.168.148.81
	port = 8649
	ttl = 1
udp_recv_channel {
# mcast_join = 239.2.11.71 port = 8649
# 接收来自任意连接的数据	
	bind = 192.168.148.81
	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

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

提示：selinux 生效需要重启，如果此时不想重启，可以临时生效之
　

　[xiaofa@hadoop102 flume]$ sudo setenforce 0

8)启动 ganglia

　　[xiaofa@hadoop102 flume]$ sudo service httpd start
　　[xiaofa@hadoop102 flume]$ sudo service gmetad start
　　[xiaofa@hadoop102 flume]$ sudo service gmond start

9) 打开网页浏览 ganglia 页面

http://192.168.148.81/ganglia

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：

[xiaofa@hadoop102 flume]$ sudo chmod -R 777 /var/lib/ganglia

***如果还是不行***，可以在修改修改配置文件/etc/httpd/conf.d/ganglia.conf
里面加上Require all granted 我已经提前加在了里面