Zarządzanie alertami i wydarzeniami (EN)

Analysing and modifying alerts and events in a Nutanix cluster

Last updated 17th March 2022

Objective

This guide details how to view alerts and events, and create custom alerts.

OVHcloud provides services for which you are responsible, with regard to their configuration and management. It is therefore your responsibility to ensure that they work properly.

This guide is designed to assist you as much as possible with common tasks. Nevertheless, we recommend contacting a specialist provider if you experience any difficulties or doubts when it comes to managing, using or setting up a service on a server.

Requirements

  • A Nutanix cluster in your OVHcloud account
  • Access to the OVHcloud Control Panel
  • You must be connected to the cluster via Prism Central

Defining alerts, events, and tasks in Prism Central

Everything that happens in a cluster associated with Prism Central is recorded in the events.

When an anomaly occurs, such as excessive CPU usage on a virtual machine, alerts are triggered automatically.
Prism Central alerts are in addition to Prism Element alerts.

You can add custom alerts to increase sensitivity on an item in the cluster.
Alerts can be sent to recipients through e-mail.

Each action that a Prism Central user performs appears as a task and is listed with a complete, in progress, or in error status.

Instructions

Configuring SMTP Server in Prism Central

In order for Prism Central to send alerts, you must configure an SMTP server.

Click the Gear icon in the top right of the Prism Central interface to configure it.

Configure Prism Central SMTP Server 01

In the right-hand menu, click SMTP Server.

Enter the SMTP server sending settings and click Save.

Configure Prism Central SMTP Server 02

Managing alerts

Open the main menu in the top left-hand corner.

Select Alerts from the Activity menu.

Display Alert 01

The list of triggered alerts appears. Configure recipients by clicking Email Configuration.

Display Alert 02

Enter recipient names in the "Email Recipients" input box and click Save.

Configure Alert Mail 01

Creating a custom alert

To create a custom alert with different trigger thresholds, click Alerts Policies and select User Defined.

Create Alert 01

Then click Create Alert Policy.

On the left, select the settings you want to monitor, such as, in the example below, CPU usage on a single virtual machine.

Next, modify the Behavioral Anomaly settings by ticking Every time there is an anomaly, alert and choosing Critical.

Change the "Static Threshold" settings by ticking Alert Critical if and choosing a threshold higher than 60%.

Click Save to save the custom alert.

Create Alert 02

The alert you have created will then appear in the list.

Create Alert 03

Resolving an alarm

In Prism Central, when an alarm is triggered, a red circle appears in the top right next to a bell. This alert will disappear after 180 minutes if the threshold has returned to normal.

The trigger threshold may return to normal within 180 minutes. In this case, you can delete the alert manually.

To delete an alert manually, click the red numbered circle.

Show triggered alarm 01

The raised alarm appears.

Show triggered alarm 02

Select the alarm and click Resolve.

Resolv Alarm 01

The alarm is then resolved and no longer appears in the Prism Central dashboard.

Resolv Alarm 02

Viewing Events

Click in the main menu in the top left-hand corner.

Select Events from the Activity menu.

Display Events 01

The list of events is displayed.

Display Events 02

Viewing Tasks

Click in the main menu in the top left-hand corner.

Select Tasks from the Activity menu.

Display Task 02

The task list appears.

Display Tasks 02

Go further

Alert and event management in Prism Central

Join our community of users on https://community.ovh.com/en/.


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