Nagios Notification for SMS

Nagios SMS

Add Contact

• cd /usr/local/nagios/etc/objects
• vim contacts.cfg to add the contact user who is notified

define contact{
        contact_name                    opsuser
        use                             generic-contact 
        alias                           opsuser
        service_notification_period     24x7
        host_notification_period        24x7
        service_notification_options    w,u,c,r
        host_notification_options       d,u
        service_notification_commands   notify-service-by-sms
        host_notification_commands      notify-host-by-sms
        pager                           13151572201
        }
define contactgroup{
        contactgroup_name       ops
        alias                   ops
        members                 opsuser
        }

Add Sms command

• cd /usr/local/nagios/etc/objects
• vim commands.cfg to add sms command

# 'notify-host-by-sms' command definition
define command{
        command_name    notify-host-by-sms
        command_line    /usr/local/bin/sendsms.pl $CONTACTPAGER$ "*** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ IP: $HOSTADDRESS$ is $HOSTSTATE$ ***"
        }
# 'notify-service-by-sms' command definition
define command{
        command_name    notify-service-by-sms
        command_line    /usr/local/bin/sendsms.pl $CONTACTPAGER$ "*** $NOTIFICATIONTYPE$ Service Alert: $HOSTNAME$ IP: $HOSTADDRESS$ / $SERVICEDESC$ is $SERVICESTATE$ ***"
        }

Add Template host and service

• cd /usr/local/nagios/etc/objects
• vim templates.cfg

define host{
        name                            linux-server    ; The name of this host template
        use                             generic-host    ; This template inherits other values from the generic-host template
        check_period                    24x7            ; By default, Linux hosts are checked round the clock
        check_interval                  5               ; Actively check the host every 5 minutes
        retry_interval                  1               ; Schedule host check retries at 1 minute intervals
        max_check_attempts              10              ; Check each Linux host 10 times (max)
        check_command                   check-host-alive ; Default command to check Linux hosts
        notification_period             24x7
                                                        ; Note that the notification_period variable is being overridden from
                                                        ; the value that is inherited from the generic-host template!
        notification_interval           15
        notification_options            d,u,r           ; Only send notifications for specific host states
        contact_groups                  ops
        register                        0               ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL HOST, JUST A TEMPLATE!
        }
# Generic service definition template - This is NOT a real service, just a template!
define service{
        name                            generic-service         ; The 'name' of this service template
        active_checks_enabled           1                       ; Active service checks are enabled
        passive_checks_enabled          1                       ; Passive service checks are enabled/accepted
        parallelize_check               1                       ; Active service checks should be parallelized (disabling this can lead to major performance problems)
        obsess_over_service             1                       ; We should obsess over this service (if necessary)
        check_freshness                 0                       ; Default is to NOT check service 'freshness'
        notifications_enabled           1                       ; Service notifications are enabled
        event_handler_enabled           1                       ; Service event handler is enabled
        flap_detection_enabled          1                       ; Flap detection is enabled
        process_perf_data               1                       ; Process performance data
        retain_status_information       1                       ; Retain status information across program restarts
        retain_nonstatus_information    1                       ; Retain non-status information across program restarts
        is_volatile                     0                       ; The service is not volatile
        check_period                    24x7                    ; The service can be checked at any time of the day
        max_check_attempts              3                       ; Re-check the service up to 3 times in order to determine its final (hard) state
        check_interval                  5                       ; Check the service every 10 minutes under normal conditions
        retry_interval                  2                       ; Re-check the service every two minutes until a hard state can be determined
        contact_groups                  ops                     ; Notifications get sent out to everyone in the 'ops' group
        notification_options            w,u,c,r                 ; Send notifications about warning, unknown, critical, and recovery events
        notification_interval           15                      ; Re-notify about service problems every hour
        notification_period             24x7                    ; Notifications can be sent out at any time
         register                        0                      ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL SERVICE, JUST A TEMPLATE!
        }

Add host

• cd /usr/local/nagios/etc/objects
• vim hosts.cfg

define host{
        use                     linux-server
        host_name               linux-server-159
        alias                   192.168.1.159
        address                 192.168.1.159
        contact_groups          ops
        }
#定义一个主机组   
define hostgroup{
        hostgroup_name          monitor-servers
        alias                   monitor servers
        members                 linux-server-159
        }

Add Service

• cd /usr/local/nagios/etc/objects
• vim services.cfg

# Define a service to "check-host-alive" the local machine
define service{
        use                     generic-service
        host_name               linux-server-159
        service_description     check-host-alive
        check_command           check-host-alive
        }
# Define a service to "ping" the local machine
define service{
        use                     generic-service
        host_name               linux-server-159
        service_description     PING
        check_command           check_ping!100.0,20%!500.0,60%
        }
# Define a service to check the disk space of the root partition
# on the local machine.  Warning if < 20% free, critical if
# < 10% free space on partition.
define service{
        use                             generic-service         ; Name of service template to use
        host_name                       linux-server-159
        service_description             Root Partition
        check_command                   check_local_disk!20%!10%!/
        }

Check and restart service

• /usr/local/nagios/bin/nagios checkconfig
• checkconfig no error, then /usr/local/nagios/bin/nagios restart