Nagios 如何实现自定义多功能告警

一．Nagios集成

1. 在 Cloud Alert 中创建 Nagios 应用，点击集成 — 监控工具 — Nagios

2. 填写“应用名称”，点击“保存并获取应用key”

3. 下载Agent安装包

在 Nagios 服务器中，使用 root 或 nagios 用户下载

wget

https://download.aiops.com/ca_agent/nagios/ca_agent-4.1.3.1-linux-x64.tar.gz

1. 安装Agent

注：下文以Nagios默认安装路径/user/local/nagios/为例，如果你的Nagios服务器不是安装在该目录，请自行替换。

tar -xzf ca_agent-4.1.3.1-linux-x64.tar.gz

cp -R ca_agent /usr/local/nagios/libexec/

cp ca_agent/plugin/nagios-plugin/nagios /usr/local/nagios/libexec/

chmod +x /usr/local/nagios/libexec/nagios

cp ca-agent/plugin/nagios-plugin/cloudalert.cfg /usr/local/nagios/etc/objects/

1. 修改配置

①修改/usr/local/nagios/etc/objects/cloudalert.cfg，设置pager为刚才点击保存所获取的appkey

vi /usr/local/nagios/etc/objects/cloudalert.cfg

define contact{

contact_name cloudalert ; The name of this contact template

alias ca ;

service_notification_period 24x7 ; service notifications can be sent anytime

host_notification_period 24x7 ; host notifications can be sent anytime

service_notification_options w,u,c,r,f,s ; send notifications for all service states, flapping events, and scheduled downtime events

host_notification_options d,u,r,f,s ; send notifications for all host states, flapping events, and scheduled downtime events

service_notification_commands notify-service-by-cloudalert ; send service notifications via email

host_notification_commands notify-host-by-cloudalert ; send host notifications via email

pager -- --处填入您新建应用时生成的appkey ;

}

②修改/usr/local/nagios/etc/objects/contacts.cfg，新增cloudalert到默认联系组

vi /usr/local/nagios/etc/objects/contacts.cfg

define contactgroup{

contactgroup_name admins

alias Nagios Administrators

members nagiosadmin,cloudalert

}

③修改/usr/local/nagios/etc/nagios.cfg，将cloudalert.cfg新增到nagios.cfg中

vi /usr/local/nagios/etc/nagios.cfg

cfg_file=/usr/local/nagios/etc/objects/cloudalert.cfg

④可选：为了让告警信息显示更加友好，建议修改nagios.cfg由原来us更改为iso8601

vi /usr/local/nagios/etc/nagios.cfg

6.重启Nagios

重启前请检查配置是不是正确

/usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

请使用root账号重启Nagios

service nagios restart

7.集成结果验证

登录Nagios页面控制台发送通知

注：请确认对应服务的notifications_enabled为1

define service{

use local-service ; Name of service template to use

host_name localhost

service_description Tomcat18080

check_command check_http18080

notifications_enabled 1

}

8.查看agent日志，出现success字样代表成功

tail -f /usr/local/nagios/libexec/ca_agent/log/agent.log

10-05-2015 15:48:53,056 CST INFO [main] [com.upyoo.agent.NagiosClient@45] start to call alert ...

10-05-2015 15:48:53,063 CST INFO [main] [com.upyoo.agent.CommandClient@82] alarmName:PROBLEM Service Alert: 127.0.0.1/Tomcat18080 is CRITICAL

10-05-2015 15:48:53,064 CST INFO [main] [com.upyoo.agent.CommandClient@82] alarmContent:localhost/127.0.0.1/Tomcat18080 connect to address 127.0.0.1 and port 18080: Connection refused Date/Time: 2015-05-10 15:48:52

10-05-2015 15:48:53,064 CST INFO [main] [com.upyoo.agent.CommandClient@82] entityName:127.0.0.1/Tomcat18080

10-05-2015 15:48:53,066 CST INFO [main] [com.upyoo.agent.CommandClient@82] priority:CRITICAL

10-05-2015 15:48:53,066 CST INFO [main] [com.upyoo.agent.CommandClient@82] app:9c4bc722-6677-9fc9-fbdc-003d8977d17e

10-05-2015 15:48:53,067 CST INFO [main] [com.upyoo.agent.CommandClient@82]

10-05-2015 15:48:53,068 CST INFO [main] [com.upyoo.agent.CommandClient@82]

10-05-2015 15:48:53,068 CST INFO [main] [com.upyoo.agent.CommandClient@82]

10-05-2015 15:48:53,069 CST INFO [main] [com.upyoo.agent.CommandClient@82]

10-05-2015 15:48:53,105 CST INFO [main] [com.upyoo.agent.CommandClient@58] start to post url:http://api.aiops.com/alert/api/event

10-05-2015 15:48:53,180 CST INFO [main] [com.upyoo.agent.CommandClient@65] body:{"app":"9c4bc722-6677-9fc9-fbdc-003d8977d17e","alarmContent":"localhost/127.0.0.1/Tomcat18080 connect to address 127.0.0.1 and port 18080: Connection refused Date/Time: 2015-05-10 15:48:52","eventId":"8G8OGOYUCOOLOENYOGGENOOOOONYNOLU","priority":"3","alarmName":"PROBLEM Service Alert: 127.0.0.1/Tomcat18080 is CRITICAL","eventType":"trigger","entityName":"127.0.0.1/Tomcat18080"}

10-05-2015 15:48:53,775 CST INFO [main] [com.upyoo.agent.CommandClient@68] result:{"result":"success","message":null,"data":"3516","totalCount":0,"code":"200"}

二．设置分派策略

1.点击配置 — 分派策略 — 新建分派

1. 输入分派策略名称 — 选择应用 — 设置分派人（告警发生时通知的人），点击保存这一步骤的可选择性就比较多了，用户可以根据【告警级别】【告警内容】【主机】【服务】【告警对象】【hostgroups】【servicegroups】等条件，来添加指定条件分派通知。

三．设置通知策略

1. 点击【配置】—【通知策略】-【新建通知】

2. 通知策略的可选择性也是很高的，用户可选择的地方有：告警状态、告警级别、通知方式、时间设置、延迟策略、通知人等，其中的意思分别如下：

告警状态：选择告警通知的状态。分别有发生时、认领时、关闭时、全选，4种选择。

告警级别：选择告警通知的级别。分别有提醒、警告、严重、所有，4种选择。

通知方式：选择告警通知的方式。分别有电话、短信、邮件、微信、APP，5种选择。

时间设置：选择告警通知的时间。分别有任何时间、工作时间、非工作时间，3种选择。

延迟策略：选择告警通知是否延迟。

通知人：选择告警通知的人。

例如：任何时间告警发生时严重级别的告警立刻微信通知所有人。

告警状态 — 发生时；告警级别 — 严重；通知方式 — 微信；时间设置 — 任何时间；延迟策略 — 立刻；通知人 — 全选

Nagios与CA告警级别映射关系

Nagios与CA告警级别映射关系以上设置就满足了不同的告警需求，多样化的通知方式，使得告警达到通知必达的效果。