8 Graph

Overview

The graph widget provides a modern and versatile way of visualizing data collected by Zabbix using a vector image drawing technique. This graph widget is supported since Zabbix 4.0. Note that the graph widget supported before Zabbix 4.0 can still be used as Graph (classic).

Configuration

To configure, select Graph as type:

Configuration

To configure, select Graph as type:

The Data set tab allows to add data sets and define their visual representation:

Existing data sets are displayed in a list. You may:

• - click on the move icon and drag a data set to a new place in the list
• - click on the expand icon to expand data set details. When expanded, this icon turns into a collapse icon.
• - click on the color icon to change the base color, either from the color picker or manually. The base color is used to calculate different colors for each item of the data set.
• - click on this button to add an empty data set allowing to select the host/item pattern.
  • If you click on the downward pointing icon next to the Add new data set button, a drop-down menu appears allowing to add a new data set with item pattern/item list or by cloning the currently open data set. If all data sets are collapsed, the Clone option is not available.

Existing data sets are displayed in a list. You may:

• - click on the move icon and drag a data set to a new place in the list
• - click on the expand icon to expand data set details. When expanded, this icon turns into a collapse icon.
• - click on the color icon to change the base color, either from the color picker or manually. The base color is used to calculate different colors for each item of the data set.
• - click on this button to add an empty data set allowing to select the host/item pattern.
  • If you click on the downward pointing icon next to the Add new data set button, a drop-down menu appears allowing to add a new data set with item pattern/item list or by cloning the currently open data set. If all data sets are collapsed, the Clone option is not available.

Data set configuration details

The host pattern and item pattern fields in the Data set tab both recognize full names or patterns containing a wildcard symbol (*). This functionality enables to select all the host names and item names containing the selected pattern. Most importantly, while typing the item name or item pattern in the item pattern field, only the items that belong to the selected host name(s) are displayed on a drop-down list. For example, having typed a pattern z* in the host pattern field, the drop-down list displays all the host names containing this pattern: z*, Zabbix server, and Zabbix proxy. After pressing Enter, this pattern is accepted and is displayed as z*. Similarly, the pattern can be created in the item pattern“* field. For example, having typed the pattern a* in the item pattern field, the drop-down list displays all the item names containing this pattern: a*, Available memory, Available memory in %.

See the image of the Data set tab below.

After pressing Enter, this pattern is accepted and is displayed as a*, and all the selected items that belong to the selected host name(s) are displayed above the Data set tab. See the image of the Data set tab below.

The Displaying options tab allows to define history data selection:

The Time period tab allows to set a custom time period:

The Axes tab allows to customize how axes are displayed:

The Legend tab allows to customize the graph legend:

The Problems tab allows to customize the problem display:

The Overrides tab allows to add custom overrides for data sets:

Overrides are useful when several items are selected for a data set using the * wildcard and you want to change how the items are displayed by default (e.g. default base color or any other property).

Existing overrides (if any) are displayed in a list. To add a new override:

• Click on the button
• Select hosts and items for the override. Alternatively, you may enter host and item patterns. Wildcard patterns may be used (for example, * will return results that match zero or more characters). To specify a wildcard pattern, just enter the string manually and press Enter. While you are typing, note how all matching hosts are displayed in the dropdown. The wildcard symbol is always interpreted, therefore it is not possible to add, for example, an item named “item*“ individually if there are other matching items (e.g. item2, item3). Host pattern and item pattern fields are mandatory.
• Click on , to select override parameters. At least one override parameter should be selected. For parameter descriptions, see the Data set tab above.

Information displayed by the graph widget can be downloaded as a .png image using the widget menu:

A screenshot of the widget will be saved to the Downloads folder.