hadoop监控之Ganglia、Nagios的一些总结

一、

关键资料引用：

1、http://www.ibm.com/developerworks/linux/library/l-ganglia-nagios-2/index.html 旧版本安装以及配置

2、http://www.centoscn.com/CentosServer/log/2013/0820/1420.html ganglia安装

3、http://nagios.sourceforge.net/docs/3_0/objectdefinitions.html nagios的各种object的定义

二、nagios一些关键词 Service

设置nagios的关键是编辑 /usr/local/nagios/etc 中的 .cfg 文件，其风格为面向对象编程风格，可以在其新建 .cfg文件，为了让nagios可知，

需要在nagios.cfg 里申明cfg_file="" 或者 cfg_dir=""。具体对象定义参看上面引用3，其最核心元素是service对象

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
	}

所以定义都是围绕上述Service各个属性而言。

三、 实用命令： nagios -v nagios.cfg （检验nagios.cfg各个定义依赖是否正确)