解决nagios不自动发警告邮件一例
139邮箱挺好用的，之前用shell做监控发信到@139.com，139还真的把把短信提示送到了手机上，网上说nagios是一款强大的监控工具，于是顺利把nagios装在ubuntu上，除了Email地址没有做其它配置，浏览器也能顺利打开http://xx.xx.xx.xx/nagios 监控页面，于是把apache服务down一下，过了一会，nagios监控页面“Current Status”-“services”项显示HTTP服务CRITICAL，却没有收到告警短信，查看邮箱也没有，查看一下原来是HTTP项的Notifications处于Disabled状态，于是直接在web接口启用Http的Notifications。sudo /etc/init.d/nagios restart ，界面已经显示Notifications “Enable”，接着stop apache ，等了一阵，web界面显示http critical ，但仍没有发出邮件。于是mail –s “test” 1XXXXXX@139.com <test.conf 测试发信没有问题，网上说是mail路径设置问题，检查nagios的发信命令，/usr/bin/mail路径并没有错误。
查看/usr/local/nagios/objects/localhost.cfg ,发现service的设置并没有启用Notifications:
define service{
use local-service ; Name of service template to use
host_name localhost
service_description SSH
check_command check_ssh
notifications_enabled 0
}
# Define a service to check HTTP on the local machine.
# Disable notifications for this service by default, as not all users may have HTTP enabled.
define service{
use local-service ; Name of service template to use
host_name localhost
service_description HTTP
check_command check_http
notifications_enabled 0
}
奇怪了，配置文件里面并没有启用，怎么web界面显示了Enable了呢。把这两项都改为“1”，然后restart nagios。仍然发不出信件。
到处看看，发现nagios的/etc目录下主配置文件nagios.cfg有关预缓存的配置，说是为了nagios快速启动而设置的
precached_object_file=/usr/local/nagios/var/objects.precache
果然，objects.precache包含了http service项：注意下面的notifications_enabled项仍然被设置为0
define service {
host_name localhost
service_description HTTP
check_period 24x7
check_command check_http
contact_groupsadmins
notification_period 24x7
initial_state o
check_interval5.000000
retry_interval1.000000
max_check_attempts 4
is_volatile 0
parallelize_check 1
active_checks_enabled 1
passive_checks_enabled1
obsess_over_service 1
event_handler_enabled 1
low_flap_threshold 0.000000
high_flap_threshold 0.000000
flap_detection_enabled1
flap_detection_optionso,w,u,c
freshness_threshold 0
check_freshness 0
notification_options u,w,c,r
notifications_enabled 0
notification_interval 60.000000
first_notification_delay 0.000000
stalking_options n
process_perf_data 1
failure_prediction_enabled 1
retain_status_information 1
retain_nonstatus_information 1
}
很显然，修改了localhost.cfg之后object.precache并没有及时更新。在nagios.cfg里把 “precached_object_file”注释掉，然后restart nagios .:)Everything goes well .能收到critical，recovery等邮件了。
页:
[1]