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SIGNL4 – IT On-Call Alerting and Duty Scheduling

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Current Version
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Compatible With
  • Nagios 2.x
  • Nagios 3.x
  • Nagios 4.x
  • Nagios XI
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In case of critical incidents in 24/7 IT operations with Nagios, SIGNL4 is your tool for instant mobile alerting. SIGNL4 adds critical mobile alerting to Nagios in no time. It bridges the ‘last mile’ from Nagios to IT staff and on-call engineers.

Upon critical events it notifies team members reliably through persistent mobile push, text and voice calls with acknowledgement, tracking and escalation. Built-in duty scheduling provides for convenient on-call planning and seamless routing of critical alerts to the right people at the right time.

SIGNL4 thus provides for an up to 10x faster response to critical alerts, major incidents and urgent service requests.
# SIGNL4 Plugin for Nagios

## Why SIGNL4

SIGNL4 is a mobile alert notification app for powerful alerting, alert management and mobile assignment of work items. Get the app at https://www.signl4.com.

Pairing Nagios with SIGNL4 can enhance your daily operations with an extension to your team wherever it is.

## Setup

In the following we describe the setup and configuration of the SIGNL4 Plugin for Nagios:

1. If not already done, sign up for your SIGNL4 account at https://www.signl4.com or directly from within your SIGNL4 app you can download from the Play Store or App Store.

2. Copy the two scripts ("signl4_host_notify.sh" and "signl4_service_notify.sh") to your Nagios plugin directory (the location may vary).

3. Edit the SIGNL4 URLs in these scripts to the match your SIGNL4 webhook URL including your team secret (replace "" with your own team secret).

4. Define the new notification commands in the Nagios configuration (a sample configuration is available in the file "signl4_commands.cfg"). Please, modify the paths accordingly.

5. Set up a new contact in Nagios or use an existing one to add notification commands for host and service. You can find an example below:

define contact{
contact_name root
alias Root
service_notifications_enabled 1
host_notifications_enabled 1
service_notification_period 24x7
host_notification_period 24x7
service_notification_options w,u,c,r
host_notification_options d,r
service_notification_commands signl4-service,notify-service-by-email
host_notification_commands signl4-host,notify-host-by-email
email root@localhost

6. Now you can test it by simulating an incident. When Nagios detects the issue, the information will be forwarded to your SIGNL4 team.