1.4. Examining cluster metrics

1. Actions.

   • Add query.
   • Expand or collapse all query tables.
   • Delete all queries.
2. Hide the plot.
3. The interactive plot.
4. The catalog of available metrics.
5. Add query.
6. Run queries.
7. Query forms.
8. Expand or collapse the form.
9. The query.
10. Clear query.
11. Enable or disable query.

12. Actions for a specific query.

    • Enable or disable query.
    • Show or hide all series of the query from the plot.
    • Delete query.
13. The metrics table for a query.
14. Color assigned to the graph of the metric. Clicking the square shows or hides the metric’s graph.

Procedure

1. Open the OpenShift Container Platform web console and navigate to the Monitoring Metrics page.

2. In the query field, enter your PromQL query.

   • To show all available metrics and PromQL functions, click Insert Metric at Cursor.
3. For multiple queries, click Add Query.
4. For deleting queries, click for the query, then select Delete query.
5. For keeping but not running a query, click the Disable query button.

6. Once you finish creating queries, click the Run Queries button. The metrics from the queries are visualized on the plot. If a query is invalid, the UI shows an error message.

   注意

   Queries that operate on large amounts of data might timeout or overload the browser when drawing timeseries graphs. To avoid this, hide the graph and calibrate your query using only the metrics table. Then, after finding a feasible query, enable the plot to draw the graphs.

7. Optional: The page URL now contains the queries you ran. To use this set of queries again in the future, save this URL.

Procedure

1. Initially, all metrics from all enabled queries are shown on the plot. You can select which metrics are shown.

   • To hide all metrics from a query, click for the query and click Hide all series.
   • To hide a specific metric, go to the query table and click the colored square near the metric name.

2. To zoom into the plot and change the shown time range, do one of the following:

   • Visually select the time range by clicking and dragging on the plot horizontally.
   • Use the menu in the left upper corner to select the time range.

   To reset the time range, click Reset Zoom.

3. To display outputs of all queries at a specific point in time, hold the mouse cursor on the plot at that point. The query outputs will appear in a pop-up box.
4. For more detailed information about metrics of a specific query, expand the table of that query using the drop-down button. Every metric is shown with its current value.
5. To hide the plot, click Hide Graph.