安装使用监控工具Graphite

：# cat /etc/redhat-release
CentOS release 6.4 (Final)

1. 添加额外源

除了CentOS源base、updates、extra之外，再添加两个源：epel和rpmforge。

wget

wget

2. 安装依赖包

依赖包相当多，争取一次搞定。

yum -y install bitmap bitmap-fonts Django pycairo python-devel python-ldap python-memcached mod_wsgi python-sqlite2 glibc-devel gcc gcc-c++ git openssl-devel python-zope-interface httpd memcached python-hashlib  django-tagging python-twisted python-simplejson

这里还是做一下简单说明：cairo是graphite的绘图库，是必须的软件。

• bitmap-fonts字体也是需要的，否则可能图形显示不正常。
•  python-twisted必须安装rpmforge源的python-twisted-core-8.2.0-1.el5.rf，这也是为什么添加rpmforge源的原因。
• mod_wsgi是apache的模块

3. 安装Graphite组件

Graphite组件包括三个部分：carbon、whisper和graphite-web。

安装

pip install carbon
pip install whisper
pip install graphite-web

pip install daemonize

4. 配置 Apache 服务

• 配置 graphite 虚拟主机

创建 Graphite 的虚拟主机配置：/etc/httpd/conf.d/graphite.conf，创建方法如下:

vi /etc/httpd/conf.d/graphite.conf

Listen 8080

# You may need to manually edit this file to fit your needs.
# This configuration assumes the default installation prefix
# of /opt/graphite/, if you installed graphite somewhere else
# you will need to change all the occurances of /opt/graphite/
# in this file to your chosen install location.
<VirtualHost *:8080>
 ServerName graphite
 DocumentRoot "/opt/graphite/webapp"

 # I've found that an equal number of processes & threads tends
 # to show the best performance for Graphite (ymmv).
 WSGIDaemonProcess graphite processes=5 threads=5 display-name='%{GROUP}' inactivity-timeout=120
 WSGIProcessGroup graphite

 # You will need to create this file! There is a graphite.wsgi.example
 # file in this directory that you can safely use, just copy it to graphite.wgsi
 WSGIScriptAlias / /opt/graphite/conf/graphite.wsgi

 Alias /content/ /opt/graphite/webapp/content/

 SetHandler None


 # NOTE: In order for the django admin site media to work you
 # must change @DJANGO_ROOT@ to be the path to your django
 # installation, which is probably something like:
 # /usr/lib/python2.6/site-packages/django
 Alias /media/ "/usr/lib/python2.4/site-packages/django/contrib/admin/media/"

 SetHandler None


 # The graphite.wsgi file has to be accessible by apache. It won't
 # be visible to clients because of the DocumentRoot though.
 <Directory /opt/graphite/conf/>
 Order deny,allow
 Allow from all
 </Directory>

</VirtualHost>

2. 初始化数据库

运行以下命令创建数据库：

1 2	python /opt/graphite/webapp/graphite/manage.py syncdb chown -R hd:hd /opt/graphite/storage/

hd是我自己定义的httpd服务运行的用户和组。

四、 启动服务和程序

启动httpd服务：

1	service httpd start

启动carbon-cache程序：

1	/opt/graphite/bin/carbon-cache.py start

启动会报错，解决方案如下：

[root@d1 conf]# /opt/graphite/bin/carbon-cache.py start
/usr/lib64/python2.6/site-packages/zope/__init__.py:3: UserWarning: Module twisted was already imported from /usr/lib64/python2.6/site-packages/twisted/__init__.pyc, but /opt/graphite/lib is being added to sys.path
  import pkg_resources
Traceback (most recent call last):
  File "/opt/graphite/bin/carbon-cache.py", line 29, in
    from carbon.util import run_twistd_plugin
  File "/opt/graphite/lib/carbon/util.py", line 21, in
    from twisted.scripts._twistd_unix import daemonize
ImportError: cannot import name daemonize
[root@d1 conf]# pip install daemonize
Downloading/unpacking daemonize
  Downloading daemonize-2.2.3.tar.gz
  Running setup.py egg_info for package daemonize
Installing collected packages: daemonize
  Running setup.py install for daemonize
Successfully installed daemonize
Cleaning up...
[root@d1 conf]# vi /opt/graphite/lib/carbon/util.py

改from twisted.scripts._twistd_unix import daemonize

变成
import daemonize
[root@d1 conf]# /opt/graphite/bin/carbon-cache.py start
/usr/lib64/python2.6/site-packages/zope/__init__.py:3: UserWarning: Module twisted was already imported from /usr/lib64/python2.6/site-packages/twisted/__init__.pyc, but /opt/graphite/lib is being added to sys.path
  import pkg_resources
Starting carbon-cache (instance a)

至此ok，# ps -ef |grep car
root     31273     1  0 17:41 ?        00:00:00 /usr/bin/python /opt/graphite/bin/carbon-cache.py start
root     31327 19915  0 17:49 pts/0    00:00:00 grep car

五、 测试

安装已经完成。在浏览器中使用，使用安装graphite的主机的ip代替。可以访问即可以肯定的告诉你CentOS 6.4安装Graphite成功了。

运行graphite-web安装包内的examples/example-client.py可以喂数据给graphite：

1	python example-client.py