Viewing Charts for Cluster, Service, Role, and Host Instances
For cluster, service, role, and host instances you can see charts of various metrics relevant to the entity you are viewing. While the metrics displayed are different for each entity, the basic functionality works in the same way.
A limited set of charts appears under the Home page for the cluster instances. Similarly, a limited set of charts appears under the Status tab for a service, role, or host instance. There is also a Charts Library tab that appears for each of these entity types, and which displays a much larger set of charts, organized by categories such as process charts, host charts, CPU charts, and so on, depending on the entity (service, role, or host) that you are viewing.
You can toggle between Custom and Default dashboards for these charts. The Custom dashboard is displayed by default when you view the Home page or Status tab for one of these entities.
If you mouse over a chart, two icons appear in the upper right corner of the chart:
- Click the blue down arrow icon to open a menu for editing the chart or exporting its data. In the Custom dashboard, the menu includes the selections Edit, Edit a Copy, Export JSON, Export CSV, and Remove. In the Default dashboard, the menu only includes Edit a Copy, Export JSON, and Export CSV. In other words, the Default dashboard doesn't allow changing or removing the original chart. Use the edit button to the upper right of the chart to toggle between Custom and Default dashboards.
- For many charts, the menu opened with the blue down arrow will also include Create Trigger. Triggers allow you to define actions to be taken when a specified condition is met. For information on creating triggers, see Triggers.
- Beneath the blue down arrow is the expand icon , used to display the chart in a larger size.
Hovering with the mouse over a stream on a chart (for example, a line on a line chart) opens a pop-up window that displays information about that stream. Move the mouse horizontally to see the data values change, based on the time represented at the mouse's position along the chart's horizontal axis. Click on a stream within the chart to display a larger pop-up window that includes additional information for the stream at the point in time where the mouse was clicked. At the bottom of the pop-up window is a button for viewing the Cloudera Manager page for the entity (service, host, role, query, or application) associated with the chart, if applicable (View Service, View Host, etc.). Click the button View Entity Chart to display a chart for the stream on its own page. If the chart displays more than one stream, the new chart displays only that stream. The chart page includes an editable text field containing a default title based on the select statement that was used to create the chart. This title will be used if you save the chart as a dashboard. Type a new title for the chart into this field, if desired.