一、
關鍵資料引用：
1、http://www.ibm.com/developerworks/linux/library/l-ganglia-nagios-2/index.html 舊版本安裝以及配置
2、http://www.centoscn.com/CentosServer/log/2013/0820/1420.html ganglia安裝
3、http://nagios.sourceforge.net/docs/3_0/objectdefinitions.html nagios的各種object的定義
二、nagios一些關鍵詞 Service
設置nagios的關鍵是編輯 /usr/local/nagios/etc 中的 .cfg 文件，其風格爲面向對象編程風格，可以在其新建 .cfg文件，爲了讓nagios可知，
需要在nagios.cfg 裏申明cfg_file="" 或者 cfg_dir=""。具體對象定義參看上面引用3，其最核心元素是service對象
| define service{ | ||
| host_name | host_name | |
| hostgroup_name | hostgroup_name | |
| service_description | service_description | |
| display_name | display_name | |
| servicegroups | servicegroup_names | |
| is_volatile | [0/1] | |
| check_command | command_name | |
| initial_state | [o,w,u,c] | |
| max_check_attempts | # | |
| check_interval | # | |
| retry_interval | # | |
| active_checks_enabled | [0/1] | |
| passive_checks_enabled | [0/1] | |
| check_period | timeperiod_name | |
| obsess_over_service | [0/1] | |
| check_freshness | [0/1] | |
| freshness_threshold | # | |
| event_handler | command_name | |
| event_handler_enabled | [0/1] | |
| low_flap_threshold | # | |
| high_flap_threshold | # | |
| flap_detection_enabled | [0/1] | |
| flap_detection_options | [o,w,c,u] | |
| process_perf_data | [0/1] | |
| retain_status_information | [0/1] | |
| retain_nonstatus_information | [0/1] | |
| notification_interval | # | |
| first_notification_delay | # | |
| notification_period | timeperiod_name | |
| notification_options | [w,u,c,r,f,s] | |
| notifications_enabled | [0/1] | |
| contacts | contacts | |
| contact_groups | contact_groups | |
| stalking_options | [o,w,u,c] | |
| notes | note_string | |
| notes_url | url | |
| action_url | url | |
| icon_image | image_file | |
| icon_image_alt | alt_string | |
| } | ||
三、 實用命令： nagios -v nagios.cfg （檢驗nagios.cfg各個定義依賴是否正確)