Hello all,
First off, I really appreciate any feedback you can provide. I’ve just recently started working with Nagios and everything is working great, except for notifications being sent out. I’ve been searching all over the net, comparing my configurations with others to see if there was anything noticeable I was missing, but I can’t seem to find anything. I’ve included my configuration files below for you to look at.
I have been able to send a mail from the server (CentOS 5.3) using sendmail. I can also successfully send Email using the E-mail commands in the commands.cfg file.
Everything is being monitored correctly, just for some reason the E-mails are not being sent out. I should also note that if I do a “Send custom host notification” in nagios on a host that has a critical warning, I DO get an E-mail successfully. It’s just not automatically sending them out.
UPDATE: I do have some good news. I did receive a notification last night for a flapping alert. However, it still is not sending out alerts from being down, returning to up state, etc…
[quote]
[1255678430] SERVICE FLAPPING ALERT: AUSTIN-LAPTOP;CPU Load;STOPPED; Service appears to have stopped flapping (4.0% change < 5.0% threshold)
[1255678430] SERVICE NOTIFICATION: libertyadmins;AUSTIN-LAPTOP;CPU Load;FLAPPINGSTOP (CRITICAL);notify-service-by-email;No route to host[/quote]
So it appears I’m receiving flapping alerts, but nothing else. In the Nagios web interface, if I go to Configuration --> Contacts…I can see that under Service Notification Options and Host Configuration Options I only see “Flapping, Downtime” enabled. I’m not getting downtime alerts, but shouldn’t there be more options there? Uptime…etc.
Is there something obvious I am missing in the config files? I really appreciate the help, please let me know what you think.
[size=150]Templates.cfg[/size]
###############################################################################
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#
# CONTACT TEMPLATES
#
###############################################################################
###############################################################################
define contact{
name generic-contact ; The name of this contact template
host_notifications_enabled 1
service_notifications_enabled 1
host_notification_commands notify-host-by-email
service_notification_commands notify-service-by-email
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 w,u,c,r,f,s ; send notifications for all host states, flapping events, and scheduled downtime events
register 0 ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL CONTACT, JUST A TEMPLATE!
}
###############################################################################
###############################################################################
#
# HOST TEMPLATES
#
###############################################################################
###############################################################################
# Generic host definition template - This is NOT a real host, just a template!
define host{
name generic-host ; The name of this host template
notifications_enabled 1 ; Host notifications are enabled
event_handler_enabled 1 ; Host event handler is enabled
flap_detection_enabled 1 ; Flap detection is enabled
failure_prediction_enabled 1 ; Failure prediction 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
notification_period 24x7 ; Send host notifications at any time
check_period 24x7 ; By default, Linux hosts are checked round the clock
check_interval 1 ; Actively check the host every 1 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 workhours ; Linux admins hate to be woken up, so we only notify during the day
notification_interval 120 ; Resend notifications every 2 hours
notification_options w,u,c,r,f,s ; Only send notifications for specific host states
contact_groups libertyadminsgroup ; Notifications get sent to the admins by default
register 0 ; DONT REGISTER THIS DEFINITION - ITS NOT A REAL HOST, JUST A TEMPLATE!
}
# Windows host definition template - This is NOT a real host, just a template!
define host{
name windows-server ; The name of this host template
use generic-host ; Inherit default values from the generic-host template
check_period 24x7 ; By default, Windows servers are monitored round the clock
check_interval 1 ; Actively check the server every 1 minutes
retry_interval 1 ; Schedule host check retries at 1 minute intervals
max_check_attempts 10 ; Check each server 10 times (max)
check_command check-host-alive ; Default command to check if servers are "alive"
notification_period 24x7 ; Send notification out at any time - day or night
notification_interval 60 ; Resend notifications every 30 minutes
notification_options w,u,c,r,f,s ; Only send notifications for specific host states
contact_groups libertyadminsgroup ; Notifications get sent to the admins by default
hostgroups windows-servers ; Host groups that Windows servers should be a member of
register 0 ; DONT REGISTER THIS - ITS JUST A TEMPLATE
}
# Define a template for switches that we can reuse
define host{
name switches ; The name of this host template
use generic-host ; Inherit default values from the generic-host template
check_period 24x7 ; By default, switches are monitored round the clock
check_interval 5 ; Switches are checked every 5 minutes
retry_interval 1 ; Schedule host check retries at 1 minute intervals
max_check_attempts 10 ; Check each switch 10 times (max)
check_command check-host-alive ; Default command to check if routers are "alive"
notification_period 24x7 ; Send notifications at any time
notification_interval 30 ; Resend notifications every 30 minutes
notification_options w,u,c,r,f,s ; Only send notifications for specific host states
contact_groups libertyadminsgroup ; Notifications get sent to the admins by default
hostgroups switches
register 0 ; DONT REGISTER THIS - ITS JUST A TEMPLATE
}
define host{
name routers ; The name of this host template
use generic-host ; Inherit default values from the generic-host template
check_period 24x7 ; By default, switches are monitored round the clock
check_interval 5 ; Switches are checked every 5 minutes
retry_interval 1 ; Schedule host check retries at 1 minute intervals
max_check_attempts 10 ; Check each switch 10 times (max)
check_command check-host-alive ; Default command to check if routers are "alive"
notification_period 24x7 ; Send notifications at any time
notification_interval 30 ; Resend notifications every 30 minutes
notification_options w,u,c,r,f,s ; Only send notifications for specific host states
contact_groups libertyadminsgroup ; Notifications get sent to the admins by default
hostgroups routers
register 0 ; DONT REGISTER THIS - ITS JUST A TEMPLATE
}
###############################################################################
###############################################################################
#
# SERVICE TEMPLATES
#
###############################################################################
###############################################################################
# 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
failure_prediction_enabled 1 ; Failure prediction 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
normal_check_interval 3 ; Check the service every 10 minutes under normal conditions
retry_check_interval 1 ; Re-check the service every two minutes until a hard state can be determined
contact_groups libertyadminsgroup ; Notifications get sent out to everyone in the 'admins' group
notification_options w,u,c,r,f,s ; Send notifications about warning, unknown, critical, and recovery events
notification_interval 60 ; 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!
}[/code]
**[size=150]Commands.cfg[/size]**
[code]# 'notify-host-by-email' command definition
define command{
command_name notify-host-by-email
command_line /usr/bin/mail "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" | /bin/mail -s "** $NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$ **" $CONTACTEMAIL$
}
# 'notify-service-by-email' command definition
define command{
command_name notify-service-by-email
command_line /usr/bin/mail "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState: $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional Info:\n\n$SERVICEOUTPUT$" | /bin/mail -s "** $NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$ **" $CONTACTEMAIL$
}[/code]
**
[size=150]Services.cfg[/size]**
[code]define service{
use generic-service
hostgroup_name windows-servers
service_description System Uptime
check_command check_nt!UPTIME
}
define service{
use generic-service
hostgroup_name windows-servers
service_description CPU Load
check_command check_nt!CPULOAD!-l 5,80,90
}
define service{
use generic-service
hostgroup_name windows-servers
service_description Memory Usage
check_command check_nt!MEMUSE!-w 80 -c 90
}
define service{
use generic-service
hostgroup_name windows-servers
service_description Used Disk Space
check_command check_nt!USEDDISKSPACE!-l c -w 80 -c 90
}
define service{
use generic-service
hostgroup_name windows-servers
service_description Ping Test
check_period 24x7
max_check_attempts 3
normal_check_interval 3
retry_check_interval 1
contact_groups libertyadminsgroup
notification_interval 60
notification_period 24x7
notification_options w,u,c,r
check_command check_ping!200.0,20%!600.0,60% ; The command used to monitor the service
}**
[size=150]Hosts.cfg[/size]**
define host{
use windows-server ; Inherit default values from a template
host_name NAME ; The name we're giving to this host
alias NAME ; A longer name associated with the host
address <IP ADDRESS> ; IP address of the host
}