Centos 6.4下网络监视工具(Nagios)邮件告警配置

系统：Centos 6.4

服务器：hostname:Nagios-Server kernel:2.6.32-358.el6.x86_64 IP:1.1.1.26
客户端：hostname:Nagios-Client kernel:2.6.32-358.el6.x86_64 IP:1.1.1.27

升级内核：

[root@Nagios-Server ~]# yum install ntpdate -y    #安装ntpdate，时间同步
[root@Nagios-Server ~]# /usr/sbin/ntpdate time.nist.gov    #时间同步
[root@Nagios-Server ~]# yum install kernel kernel-devel gcc gcc-c++ wget vim -y    #升级内核
[root@Nagios-Client ~]# yum install ntpdate -y
[root@Nagios-Client ~]# /usr/sbin/ntpdate time.nist.gov
[root@Nagios-Client ~]# yum install kernel kernel-devel gcc gcc-c++ wget vim -y

升级后内核：

服务器：2.6.32-504.1.3.el6.x86_64
客户端：2.6.32-504.1.3.el6.x86_64

日志分析：

一、服务

①check_users服务监控，第一次soft、第二次soft、第三次hard，在然后发送邮件

[1417348396] Warning: Return code of 255 for check of service 'check_users' on host '1.1.1.27' was out of bounds.
[1417348396] SERVICE ALERT: 1.1.1.27;check_users;CRITICAL;SOFT;1;(Return code of 255 is out of bounds)
[1417348456] Warning: Return code of 255 for check of service 'check_users' on host '1.1.1.27' was out of bounds.
[1417348456] SERVICE ALERT: 1.1.1.27;check_users;CRITICAL;SOFT;2;(Return code of 255 is out of bounds)
[1417348516] Warning: Return code of 255 for check of service 'check_users' on host '1.1.1.27' was out of bounds.
[1417348516] SERVICE ALERT: 1.1.1.27;check_users;CRITICAL;HARD;3;(Return code of 255 is out of bounds)
[1417348516] SERVICE NOTIFICATION: nagiosadmin;1.1.1.27;check_users;CRITICAL;notify-service-by-email;(Return code of 255 is out of bounds)
②：check_zombie_procs服务监控，第一次soft、第二次soft、第三次hard，在然后发送邮件

[1417348426] Warning: Return code of 255 for check of service 'check_zombie_procs' on host '1.1.1.27' was out of bounds.
[1417348426] SERVICE ALERT: 1.1.1.27;check_zombie_procs;CRITICAL;SOFT;1;(Return code of 255 is out of bounds)
[1417348486] Warning: Return code of 255 for check of service 'check_zombie_procs' on host '1.1.1.27' was out of bounds.
[1417348486] SERVICE ALERT: 1.1.1.27;check_zombie_procs;CRITICAL;SOFT;2;(Return code of 255 is out of bounds)
[1417348546] Warning: Return code of 255 for check of service 'check_zombie_procs' on host '1.1.1.27' was out of bounds.
[1417348546] SERVICE ALERT: 1.1.1.27;check_zombie_procs;CRITICAL;HARD;3;(Return code of 255 is out of bounds)
[1417348546] SERVICE NOTIFICATION: nagiosadmin;1.1.1.27;check_zombie_procs;CRITICAL;notify-service-by-email;(Return code of 255 is out of bounds)
③：check_total_procs服务监控，第一次soft、第二次soft、第三次hard，在然后发送邮件

[1417348436] Warning: Return code of 255 for check of service 'check_total_procs' on host '1.1.1.27' was out of bounds.
[1417348436] SERVICE ALERT: 1.1.1.27;check_total_procs;CRITICAL;SOFT;1;(Return code of 255 is out of bounds)
[1417348496] Warning: Return code of 255 for check of service 'check_total_procs' on host '1.1.1.27' was out of bounds.
[1417348496] SERVICE ALERT: 1.1.1.27;check_total_procs;CRITICAL;SOFT;2;(Return code of 255 is out of bounds)
[1417348556] Warning: Return code of 255 for check of service 'check_total_procs' on host '1.1.1.27' was out of bounds.
[1417348556] SERVICE ALERT: 1.1.1.27;check_total_procs;CRITICAL;HARD;3;(Return code of 255 is out of bounds)
[1417348556] SERVICE NOTIFICATION: nagiosadmin;1.1.1.27;check_total_procs;CRITICAL;notify-service-by-email;(Return code of 255 is out of bounds)
二、主机

[1417349046] HOST ALERT: 1.1.1.27;DOWN;SOFT;1;CRITICAL - Host Unreachable (1.1.1.27)
[1417349116] HOST ALERT: 1.1.1.27;DOWN;SOFT;2;CRITICAL - Host Unreachable (1.1.1.27)
[1417349186] HOST ALERT: 1.1.1.27;DOWN;HARD;3;CRITICAL - Host Unreachable (1.1.1.27)
[1417349186] HOST NOTIFICATION: nagiosadmin;1.1.1.27;DOWN;notify-host-by-email;CRITICAL - Host Unreachable (1.1.1.27)

配置：

①：配置报警邮箱

sed -i 's#email                           nagios@localhost#email                           [email protected]#g' /usr/local/nagios/etc/objects/contacts.cfg    #修改发送报警邮件地址

②：配置主机报警频次（备注：可以自定义，也可以修改修改/usr/local/nagios/etc/objects/templates.cfg）

define host{
        name                            linux-server    #linux模板通用名
        use                             generic-host    #继承了通用主机模板的其他值
        check_period                    24x7            #检查周期7*24小时
        check_interval                  2               #每隔2分钟检查一次
        retry_interval                  1               #异常后，1分钟后重试
        max_check_attempts              3               #异常后，最大尝试3次，然后报警
        check_command                   check-host-alive #检查主机存活命令
        notification_period             24x7            #工作时间通知
        notification_interval           2               #异常后，通知间隔2分
        notification_options            d,u,r           #当主机down(关机)、unrealcable(不可达)、recovery(恢复)
        contact_groups                  admins          #通知发送管理员组
        register                        0               #？？？
        }

③：配置服务报警频次

define service{
        name                            generic-service         #通用服务模板名称
        active_checks_enabled           1                       #服务检查启用
        passive_checks_enabled          1                       #被动检查启用
        parallelize_check               1                       #并行检查开启
        obsess_over_service             1                       #分布式监控使用，1启用，0禁用
        check_freshness                 0                       #不检查服务'freshness'
        notifications_enabled           1                       #服务通知启用
        event_handler_enabled           1                       #启用服务事件处理程序
        flap_detection_enabled          1                       #Flap detection is enabled
        failure_prediction_enabled      1                       #启用故障预测
        process_perf_data               1                       #性能数据
        retain_status_information       1                       #保留重新启动状态信息
        retain_nonstatus_information    1                       #保留非状态信息
        is_volatile                     0                       #The service is not volatile
        check_period                    24x7                    #7*24
        max_check_attempts              3                       #重新检查服务3次，以确认是否真正的状态
        normal_check_interval           1                       #正常情况下每个1分钟检查一次
        retry_check_interval            1                       #每隔1分钟检查一次服务，直到真正的状态确定
        contact_groups                  admins                  #通知管理组
        notification_options            w,u,c,r                 #发送通知，当服务状态为warning, unknown, critical, and recovery events
        notification_interval           2                       #60分钟后重新通知状态
        notification_period             24x7                    #7*24
         register                        0                      #？？？
        }