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I am using nagios 3.06 to monitor the servers. When a service is critical, it sends a mail, but when a server is down no mail is sent. Even if all the services go to critical state, no mail is sent.

I have the following configuration:

define command {
    command_name notify-host-by-email
    command_line python /etc/nagios3/send_mail.py "[Nagios] $HOSTNAME$" "******** Nagios ****\n\n Host: $HOSTNAME$\n Description: the server is down"
}

define command{
    command_name notify-service-by-email
    command_line python /etc/nagios3/send_mail.py "[Nagios] $HOSTNAME$: $SERVICEDESC$ ($NOTIFICATIONTYPE$)" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState: $SERVICESTATE$\nDate/Time: $LONGDATETIME$\nAdditional Info:$SERVICEOUTPUT$"
}

The python script is a script to sent a mail. It works if I execute it from the command line, but it doesn't sents an email from nagios.

What I am doing wrong?

UPDATE: The contact data is:

define contact{
    contact_name                    root
    alias                           Root
    service_notification_period     24x7
    host_notification_period        24x7
    service_notification_options    w,u,c,r
    host_notification_options       d,r
    service_notification_commands   notify-service-by-email
    host_notification_commands      notify-host-by-email
    email                           myemail@gmail.com
}

define contactgroup{
    contactgroup_name       admins
    alias                   Nagios Administrators
    members                 root
}
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1  
How about the host definition? –  quanta Sep 10 '12 at 17:02

3 Answers 3

First check and see that nagios is actually kicking off your script by looking at nagios.log. If it is taking the appropriate action you can try logging the output of your email script by adding 2>&1 >> /tmp/mynagiosemail.log to see if it's throwing an error, either python related or os related.

I noticed that your script is in /etc/nagios3, this is an abnormal place for putting something that nagios will be executing, you may want to move it to /usr/lib/nagios/plugins/ or /usr/lib/nagios3 just to be consistant and then make sure that the nagios user can read and execute it. It doesn't look like there are any apparmor limitations on that but it can't hurt.

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What are your service_notification_options and host_notification_options set to for your contact or contactgroup (if it exists there)? Since you're receiving an email for warning, it sounds like you do not have c set for service_notification_options and do not have d set for host_notification_options

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updated the information –  tzulberti Dec 7 '10 at 21:24

in your contact {} do you have the following?

host_notification_commands      host-notify-by-email
share|improve this answer
    
yes, I updated the information... –  tzulberti Dec 7 '10 at 21:26

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