Nagios Core

How it works

When a problem meets a specified threshold in Nagios Core, it sends a JSON-formatted webhook to xMatters. A Nagios trigger in xMatters parses the webhook and initiates a flow. The webhook includes essential alert data that is included in notifications sent to users, and details about the origin of the alert that you can use to enrich the notifications or use when building automated tasks.

Install the workflow

The following instructions describe how to install the workflow through the xMatters one-click installation process.

  1. Go to the Workflows Templates page and click the Nagios Core tile.
  2. On the Install Workflow dialog box, give the workflow a name (this must be unique in your instance) and add an optional description.
    • You can edit these later, if needed.

  3. Click Install.
    • After the workflow installs, the screen shows next steps as well the installation logs. The installation logs give you additional information about the installation, such as if you have languages in your instance that aren't configured for the messages in the workflow.

  4. Copy the trigger URL — you’ll use this to configure a webhook in Nagsios.
    • The trigger URL includes the recipients parameter, which specifies who should be notified. By default, this parameter is set to notify you (the logged in user), but you can set it to target any user or group you want.
  5. Click Done.

Configure Nagios Core to send requests to the trigger URL

The following instructions describe how to configure Nagios Core to send signals to your triggers.

Set recipients in the trigger URL

The trigger expects the recipients in the trigger URL. When you copy the URL from xMatters, it includes the recipients parameter: recipients=<yourname>. Of course, you don’t want to receive all the alerts.

To change the recipients for alerts from this webhook, swap out your name for the people or groups you want to target. For example, to target the 'DatabaseTeam', 'Antares Service Team', and 'HR & Marketing' groups, add recipients=databaseteam,antares%20service%20team,HR%20%26%20Marketing to the trigger URL. Remember to URL-encode any special characters, including spaces, in your group names.

We recommend using groups so you can take advantage of the xMatters group features — rotations, escalations, and absences — to reach the right on-call people to jump on an issue.

How to use the workflow

When a condition you've set fires, it sends a signal to xMatters, which creates an event and notifies the individual or the on-call members of the people or groups you set as recipients in the webhook URL. When the trigger receives a signal saying the issue is resolved, it automatically terminates related events in xMatters.

The person responding to the notification has the following response options:

  • Acknowledge: Acknowledges the notifications and stops escalations.
  • Escalate: Immediately escalates the event to the next on-call resolver in a targeted group.
  • Close: Ends the xMatters event and stops notifying all targeted recipients.
  • Initiate Incident: Initiates an incident in xMatters.

Next Steps

Now that you've installed the workflow, you can use it as-is, or customize it to suit your needs better. Here are some examples of things you can add to the workflow to customize it: