Monitoring (former Advanced Monitoring) helps you keep your Plesk running smoothly by tracking the server resources usage and notifying you when one or more resources usage reaches a predefined threshold.

Monitoring works in tandem with the Grafana extension and uses Grafana to display server metrics as graphs and dashboards. By default, Monitoring is installed in your Plesk. The first time you run Monitoring, you will need to manually install Grafana. Go to Monitoring and click Install Grafana:

monitoring install grafana

Note: If you upgraded to Plesk Obsidian from Plesk Onyx and had Server Health Monitor installed, Monitoring will be automatically installed and will replace Server Health Monitor.

Tracking Monitoring Graphs

Monitoring is located in the main left panel. The resources and services monitored by Monitoring are separated into five categories, each one is shown on its own tab:

image tabs

Configuring the monitoring refresh period

The values displayed in Monitoring reflect the resource usage at the moment the page was loaded and not the current resource usage. You can select how often Monitoring will auto-refresh its data (for example, each five seconds or each hour) or you can turn off auto-refresh and refresh the data manually by clicking the image refresh icon. By default, Monitoring auto-refreshes its data every two minutes.

image time

Note: Monitoring data does not change in real time. If your server is permanently loaded, you will not see the conformity between Monitoring and a system resource usage monitor (for example, top in Linux or Task Manager in Windows).

Configuring the monitoring time range

You can select a period for which Monitoring will generate graphs. Do one of the following:

  • Select a predefined period. For example, « Last 5 minutes », « Last 1 hour », « Last 2 days », and so on:

    image time range

  • Specify a custom time range. In the « Absolute time range » section, in the « From » and « To » fields, specify the required date and time, and then click Apply time range. For more information about how to specify a custom time range, read the Time range controls article by Grafana.

    image time range custom

This may help you find out how the parameters change with time and identify the periods when the resources usage is maximal or minimal.

Note: Any changes you make in Monitoring dashboards will not be saved. For example, if you select the « Last 6 hours » time range and turn off auto-refresh, Monitoring will return to its default settings once the browser page is refreshed.

Tracking Monitoring Notifications

You can track server health not by only looking at resources graphs but also by paying attention to Monitoring notifications.

Monitoring shows notifications in the Plesk interface when the resource usage exceeds its threshold and/or returns to its normal value. The notifications are shown not for all resources but only for those that are turned on and have their thresholds set in Monitoring settings.

Pour certaines ressources, les notifications sont activées et les seuils sont définis par défaut. Lorsque la valeur seuil par défaut est dépassée, cela signifie que le paramètre est proche de sa valeur critique et que sa charge risque d’être problématique.

image alert

If you do not have experience in server administration, we recommend that you keep the default Monitoring configuration. The preconfigured thresholds and enabled notifications are optimal. Otherwise, you can set your own thresholds and turn on and off notifications for particular resources.

Note: You can also manage the Monitoring configuration via the CLI. Learn how to do so in Plesk for Linux and Plesk for Windows.

Pour définir des valeurs seuils et/ou activer/désactiver des notifications pour des ressources spécifiques :

  1. Go to Monitoring and click Settings.

  2. Sur cette page vous pouvez :

    • Activer/désactiver les notifications pour une ressource spécifique.
    • Personnaliser une valeur seuil.

    Vous pouvez personnaliser la valeur seuil uniquement pour une ressource activée. Si nécessaire, activez-la et définissez ensuite le seuil. Certaines ressources peuvent avoir deux valeurs seuil : une valeur absolue (en unités de mesure) et une valeur relative (en pourcentage). Dans ce cas, choisissez d’abord votre type de seuil préféré et définissez ensuite sa valeur.

  3. Click Apply to save settings and then click Back to statistics to return to the main screen of Monitoring.

You can also turn off all Monitoring notifications for all resources.

Pour désactiver les notifications pour l’ensemble des ressources :

#. In the upper right corner of the screen, click the image bell icon, and then click the image cog Settings icon.

  1. In the « Notifications » window that appears, you can enable or disable notifications that Monitoring sends you:
    • Resource usage exceeds its threshold.
    • Resource usage returns to its normal value.
    • Monitoring agent detects an issue.

Updating Monitoring After Hardware Change

The hardware configuration of your Plesk server is captured by Monitoring during the extension installation. Any changes made to the server hardware afterwards are not reflected in Monitoring. For example, if you increase the amount of RAM from 1 GB to 2 GB, Monitoring will still display that the total amount of RAM on the server is 1 GB. To make Monitoring reflect the changes made to the server hardware, go to Extensions > the « My Extensions » tab > Grafana, click Open, and then click Restart integration (in the « monitoring » row).