Sending Nagios notifications with AWS SNS

The original mini-tutorial for this post is here. Please be sure to Brooks Garrett's website.

A short tutorial to setup SMS messaging for Nagios 4 notifications. This tutorial is for Nagios 4 on Ubuntu 18.04. This tutorial will assume you currently have an AWS account and have already setup SNS, working Nagios installation at `/usr/local/nagios/', Python 2.7, and root access to your server. 

Download this oldish python script from Github ( and install it in `/usr/local/nagios/NagiosAWSSNS/`. Add your AWS IAM ID and Key in this line:

sns = boto.connect_sns('AWS_ACCESS_KEY_ID','AWS_SECRET_ACCESS_KEY', region=region)

Update the `--topic='TOPIC_NAME'` in the following template to match the Topic you created in AWS SNS,  and add the template to the `/usr/local/nagios/etc/objects/commands.cfg` file: 

# 'notify-host-by-sns' command definition
define command{
        command_name    notify-host-by-sns
        command_line    /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\nHost: $HOSTNAME$\nState: $HOSTSTATE$\nAddress: $HOSTADDRESS$\nInfo: $HOSTOUTPUT$\n\nDate/Time: $LONGDATETIME$\n" | /opt/pyAmazonSNS/ --topic="TOPIC_NAME" --sub="$NOTIFICATIONTYPE$ Host Alert: $HOSTNAME$ is $HOSTSTATE$"
# 'notify-service-by-sns' command definition
define command{
        command_name    notify-service-by-sns
        command_line    /usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: $NOTIFICATIONTYPE$\n\nService: $SERVICEDESC$\nHost: $HOSTALIAS$\nAddress: $HOSTADDRESS$\nState: $SERVICESTATE$\n\nDate/Time: $LONGDATETIME$\n\nAdditional Info:\n\n$SERVICEOUTPUT$\n" | /opt/pyAmazonSNS/ --topic="TOPIC_NAME" --sub="$NOTIFICATIONTYPE$ Service Alert: $HOSTALIAS$/$SERVICEDESC$ is $SERVICESTATE$"

Lastly, update the '/usr/local/nagios/etc/objects/contacts.cfg` file to use the above commands. Under the contact definition you want to use for these SMS messages, add the following lines (see docs for more information):

define contact {
    contact_name            nagiosadmin
    use                     generic-contact
    alias                   Nagios Admin
    host_notifications_enabled      1
    service_notifications_enabled   1
    service_notification_options    w,u,c,r
    host_notification_options       d,u,r
    service_notification_commands   notify-service-by-email, notify-service-by-sns
    host_notification_commands      notify-host-by-email, notify-host-by-sns
    email                           <your-email-address>
    can_submit_commands             1

Finally, restart Nagios and check there were no errors in syslog.

service nagios restart
tail /usr/local/nagios/var/nagios.log