4.1 Ganglia 的安装和部署

步骤1: 安装 httpd 和 php

sudo yum -y install httpd php

步骤2: 安装其他依赖

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

步骤3: 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-web
sudo yum install -y ganglia-gmond

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

主要修改为:Allow from all

#
# Ganglia monitoring system php web frontend
#

Alias /ganglia /usr/share/ganglia

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

步骤5: 修改配置文件/etc/ganglia/gmetad.conf

修改为:

data_source "hadoop201" 192.168.3.201

步骤6: 修改配置文件/etc/ganglia/gmond.conf

修改为:

cluster {
  name = "hadoop102"
  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 = 192.168.2.201
  port = 8649
  ttl = 1
}
udp_recv_channel {
  # mcast_join = 239.2.11.71
  port = 8649
  bind = 192.168.2.201
  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
}

步骤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

elinux 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

步骤8: 启动 ganglia

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

步骤9: 打开网页浏览 ganglia 页面

http://192.168.3.201/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