GridGain Developers Hub

Configuring Widgets

Adding Widgets

To add a widget, select a tab in the Tab bar and click Add widget. You can add any of several types of widgets:

  • Single metric value - the current value of a selected metric.

  • Gauge chart - the selected metrics as a gauge.

  • Nodes — a table containing information about cluster nodes.

  • Metrics (chart) — the selected metric as a time series.

  • Metrics (table) — multiple metrics in tabular form.

  • Metrics (histogram) — the selected metric as a histogram.

  • Heat map — the selected metrics as a heat map.

  • Rebalance — the progress of an ongoing rebalancing process.

Renaming Widgets

You can use the widget menu to change the name a widget.

Gauge Widget

The Gauge widget displays a selected metric in a gauge from 0 to 100. You can view how close the value is to its expected maximum, for example, for CPU load.

Gauge Widget

Nodes Widget

The Nodes widget is a table that contains information about cluster nodes. You can add and remove columns from the table via the widget’s menu. To open the widget’s menu, click the icon in the top-right corner of the widget.

Nodes Widget

The following information is available in the Nodes widget:

Column Description


The order of the node.

Node ID

The ID of the node.

Consistent ID

The consistent ID of the node.


The name of the cluster.


Whether the node is online or offline:

  • "Online" — the node is up and connected to the cluster.

  • "Offline" — the node is registered in the baseline topology but is either shut down or not connected to the cluster.


The type of node: Coordinator, Server, or Client.


The version of GridGain/Apache Ignite that was used to launch the node. If you are using the Rolling Upgrades feature that is available in GridGain Enterprise Edition, one cluster might have nodes with different versions.


The IP address of the machine where the node is running.


The PID of the JVM.


The MAC address of the node.

You can inspect the configuration of any node that is listed in the table. Click the icon at the end of the row and select Inspect Configuration.

Metrics Widgets

There are three types of metrics widgets. Each type displays metrics in a particular form: chart, table, or histogram. A table can display multiple metrics. A chart and a histogram can display only one metric.

If multiple metrics are added to the table wizard, they are grouped by functionality (communication, compute, ignite, etc).

To add a widget to a tab, go to the tab, and click Add widget. Then, on the widget, click the icon. From the drop-down menu, select the scope. Then type the name of the metric you want to display.

Metrics widgets are updated every 5 seconds.

Metrics (single value)

The Single value widget displays the current value of the selected metric, such as the number of caches, the query running time, etc.

Single value

Metrics (chart)

The Metrics (chart) widget displays the specified numeric metric as a chart, at 5-second granularity. The data is displayed for the period that is selected in the Time Period control (located in the Tab bar).


Metrics (table)

The Metrics (table) widget displays a table that details the last values of multiple metrics.

The first column of the table displays the consistent ID of the nodes. Other columns contain the values of the selected metrics. You can add as many metrics as you want.


Metrics (histogram)

The Metrics (histogram) widget displays histogram metrics. The widget can display only metrics that return data structures that can be represented in a histogram.


Heat Map Widget

The Heat Map widget displays a selected metric in temperature-related colors. Smaller values are displayed in a "colder" color, and larger values are displayed in a "hotter" color.

You can configure the values that are treated as minimum and maximum in the widget menu.

Heat Map Widget

Rebalance Widget

The Rebalance widget displays the progress of the rebalancing process. When rebalancing is in progress, the widget displays the percentage of data that has been rebalanced.

You can use the rebalance widget to monitor Rolling Upgrades. To display the versions of the nodes, click the widget configuration icon and select Show Versions.

Rebalance Widget