Creating a Dashboard

1. Log in to the AOM 2.0 console.
2. In the navigation pane, choose Dashboard > Dashboard. (To switch from the new dashboard to the old one, click Back to Old Version in the upper right corner.)
3. Click next to Dashboard to create a dashboard group.
4. Click Add Dashboard in the upper left corner of the list.
5. In the displayed dialog box, set parameters.
   Table 1 Parameters for creating a dashboard

   Parameter	Description
   Dashboard Name	Name of a dashboard. Enter a maximum of 255 characters. The following special characters are not allowed: "$# %&'+;<=>?\
   Enterprise Project	Enterprise project. If you have selected All for Enterprise Project on the global settings page, select one from the drop-down list here. If you have already selected an enterprise project on the global settings page, this option will be dimmed and cannot be changed. To use the enterprise project function, contact engineers.
   Group Type	Options: Existing and New. Existing: Select an existing dashboard group from the drop-down list. New: Enter a dashboard group name to create one. Enter a maximum of 255 characters. The following special characters are not allowed: "$# %&'+;<=>?\

6. Click OK.

After a dashboard is created, you can add graphs to the dashboard:

1. In the dashboard list, locate the target dashboard.
2. Go to the dashboard page, and select the Prometheus instance for which you want to add a graph from the drop-down list.
3. Go to the dashboard page. Click Add Graph or in the upper right corner to add a graph to the dashboard. For details about the graphs that can be added to the dashboard, see Graph Description. The data can be metric data. Select a graph type as required.
   • Add a metric graph. Set parameters by referring to Table 2. Then click Save.
     Table 2 Adding a metric graph

     Parameter	Description
     Graph Name	Name of a graph to distinguish it from other graphs. For graph names, variables can be added to dynamically filter graph information. Duplicate names are supported. Enter a maximum of 255 characters. The following special characters are not allowed: "$# %&'+;<=>?\
     Data Source	The default value is Metric Sources.
     Graph Type	Options: line, digit, top N, table, bar, and digital line.
     How to Add	Add metrics as required. You can select metrics from All metrics or using Prometheus statements.
     All metrics	Select target metrics from the metric drop-down list. Calculation method: Multiple Metrics: Performs calculation for metrics and their conditions separately, and displays the results on the graph. Combined Operations: Performs calculation on multiple metrics and their conditions based on expressions, and displays the results on the graph. Metric: Select a target metric from the drop-down list. You can also directly enter a metric name in the search box and click Generate. If no metric is reported, configure one. Statistical Period: Interval at which metric data is collected. The statistical periods that are available for you to select vary according to the time range. For details, see Relationship Between the Time Range and Statistical Period. If you use new dashboards, see Relationship between the time range and statistical period. Condition: Metric monitoring scope. Each metric condition is in "key:value" format and can be selected from the drop-down list. You can also enter a dimension name and value, and click Generate to add a metric condition. You can also click and select AND or OR to add more conditions for the metric. Group Condition: Aggregate metric data by the specified field and calculate the aggregation result. Options: Not grouped, avg by, max by, min by, and sum by. For example, avg by clusterName indicates that metrics are grouped by cluster name, and the average value of the grouped metrics is calculated and displayed in the graph. Formatted Legend Name: Use a fixed name or variable as the legend name. Format: {{dimension name}}. If the displayed legend name is {{dimension name}}, there is no dimension. For example, enter {{hostname}} and a host name will be displayed as the legend name. Tables and digit/line graphs do not support Formatted Legend Name. You can click Add Metric to add more metrics. A maximum of 100 can be added.
     Prometheus statement	Add metric data by entering a Prometheus statement related to the metric. Prometheus Statement: See Prometheus Statements. Formatted Legend Name: Use a fixed name or variable as the legend name. If the displayed legend name is {{dimension name}}, there is no dimension. Format: {{dimension name}}. For example, enter {{hostname}} and a host name will be displayed as the legend name. You can click Add Prometheus Statement to add up to 100 metrics.
     Graph Settings	On the right of the page, click the down arrow, select a desired graph type from the drop-down list, and set graph parameters (such as the X axis title, Y axis title, and displayed value). For details about the parameters, see Metric Data Graphs. If you create a dashboard of the new version, see Metric Data Graphs.
     Statistic	Method used to measure metrics. Options: Avg, Min, Max, Sum, and Samples.
     Time Range	Time range in which metric data is collected. Options: Last 30 minutes, Last hour, Last 6 hours, Last day, Last week, and Custom. If you use new dashboards, you can select From now, From last, and Specified. From now: queries data generated in a time range that ends with the current time, such as the previous 1, 5, or 15 minutes. For example, if the current time is 19:20:31 and 1 hour is selected as the relative time from now, the graphs on the dashboard display the data that is generated from 18:20:31 to 19:20:31. From last: queries data generated in a time range (on the hour) that ends with the current time, such as the previous 1 or 15 minutes. For example, if the current time is 19:20:31 and 1 hour is selected as the relative time from last, the graphs on the dashboard display the data that is generated from 18:00:00 to 19:00:00. Specified: queries data that is generated in a specified time range.
     Refresh Frequency	Interval at which the metric data is refreshed. Options: Refresh manually, 30 seconds auto refresh, 1 minute auto refresh, and 5 minutes auto refresh.

4. Click Save. The graph is successfully added to the dashboard.

After a dashboard is created, you can also perform the operations listed in Table 3.

In AOM, a maximum of 1,440 data points can be returned for a single metric query. The relationship between the time range and statistical period is as follows:

Maximum time range = Statistical period x 1,440

If you select a time range shorter than or equal to the maximum time range, all the statistical periods that meet the preceding formula can be selected. For example, if you want to query metrics in the last hour, the available statistical periods are 1 minute, and 5 minutes.

For a dashboard, the relationship between the time range and statistical period is shown in the following table.