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Working with custom pages

Custom pages are user-defined pages that contain charts with custom metrics or built-in metrics that you specify. Custom pages are associated with a source and are accessible from the left pane of protocol pages, so you can view custom charts within the context of other protocol metrics for an application, device, or device group.

Note:Custom pages can only be viewed on Application, Device, and Device Group protocol pages by selecting Switch to legacy layout at the bottom left of the page. As an alternative to building a custom page, you can build a dashboard, which also contains customized charts of metrics that are important to you. For more information, see Create a dashboard.

The following information shows you how to create custom pages and add charts to them.

Create a page

Important:Assigning a custom page with trends to more than 1,000 devices might affect system performance.
  1. Log into the Web UI on the Discover or Command appliance and then click the System Settings icon at the top of the page.
  2. Click Pages and then click New.
    The Page Configuration window opens.
  3. On the Page Settings tab, complete the following steps:
    Name
    In the Name field, type a page title.
    Author
    Your ExtraHop username is displayed. You can change the username to another name.
    Page Type
    In the Page type field, select a source from the drop-down list. This selection determines whether you can add an application, device, or network to your page.
    Description
    In the description field, type information about your custom page.
  4. Click the Assignments tab and complete one of the following steps:
    • Click Assign to All. Your custom page will be accessible from protocol pages for every application, device, or network discovered on the ExtraHop system, depending on the source you selected in the Page Type field on the Page settings tab.
    • Skip the Assignments field for now. You will manually add sources to your page in step 6 that will automatically populate this field.
  5. Click OK. Your new page appears in the list of pages in the Pages window in System Settings.
  6. Close the Pages window in System Settings and click Metrics at the top of the page to manually assign sources to your page. For example, to assign the All Activity application to your page, complete the following steps:
    1. Click Application.
    2. Select All Activity and then select All Activity at the top of the left pane to access properties for this application.
    3. Click the Pages tab and then click the green plus icon. From the drop-down list, select your page name. Your page is now accessible from the All Activity protocol page.
      Note:If the source specified in the Page type field does not match the source of the object you are viewing, your page will not appear in the drop-down list. For example, the device page type will not appear in the drop-down list for an application such as All Activity.
  7. Your new page is empty. To add data to your page, complete the following steps:

Add charts to a page

  1. Log into the Web UI on the Discover or Command appliance. and then click Metrics at the top of the page.
  2. Select the protocol page that is assigned to a page you created. For example, if you assigned the All Activity application to your page, click Applications, select All Activity, and then select the name of your page in the left pane.
  3. In the upper right corner of the page, click Edit Page.
    The custom page toolbar appears below.
  4. Click Add Chart.
  5. In the Title field, type a name for the chart.
  6. In the Metric Source field, complete one of the following steps:
    • Select Built-in to display any of the 4,000+ metrics available in the ExtraHop system.
    • Select Trigger to display a custom metric that was manually created to collect specific information about your environment.
  7. In the Metric Type, select one of the following metric types from the drop-down list:
    Metric Type Definition Sample Metrics
    Count Integer datatype
    • Number of packets in the network capture
    • Number of requests to the HTTP server
    • Number of errors on the database server
    Dataset A frequency table. For each entry, the frequency is the number of times a value has been seen.
    • HTTP server request transfer time
    • HTTP server processing time
    • HTTP server response transfer time
    Sampleset Mean and standard deviation
    • HTTP server processing time detail (timing shown when clicking on HTTP server "Responses")
    • Database server processing time detail (timing shown when clicking on DB server "Methods")
    • CIFS server access time detail (timing shown when clicking on CIFS "Files")
    • TCP round trip times (timing shown when clicking on TCP "Accepted" or "Connected")
    Snapshot Integer datatype, which represents a snapshot in time TCP established connections
    Maximum The final value produced from all of the recorded values Top slowest database statements
  8. In the Chart Type field, select one of the following charts from the drop-down list depending on the metric type you selected:
    Metric Types Chart Description
    Count, snapshot, or maximum
    Tile
    Displays the total value for a metric.
    Area
    Displays metric values as a line that connects data points over time, with the area between the line and axis filled in with color.
    Rate
    Displays metric values as data points in a line over time.
    Column
    Displays metric data as vertical columns over a selected time interval.
    Dataset or sampleset
    Line
    Displays metric values as data points in a line over time.
    Box
    Displays variability for a distribution of metric data. Each horizontal line in the box plot includes three or five data points.
    Bar
    Displays the total value of metric data as horizontal bars.
    Heatmap
    Displays a distribution of metric data as vertical bars or bins. The heatmap displays only one dataset metric.
  9. Complete one of the following steps depending on the chart type you selected:
    • For line, boxplot, bar, and heatmap charts, type a label for the Y-axis in the Units Label field.
    • For line, box, and bar charts, click the Use logarithmic scale checkbox to view the values in non-linear intervals.
    • For line, box, heatmap, and bar charts, click the Percentiles drop-down list and select which percentiles you want to display.
    • For line charts, select the icon with the type of line chart you want to view.
      • Broken line segments from a list of percentiles
      • Dashed bar series from a pair of percentiles
  10. In the Metrics field, complete one of the following steps to add metrics to your chart:
    • Click Find and complete one of the following steps:
      • If Built-in was selected as the Metric Source, then the Available Metrics list displays all the built-in metrics available in the ExtraHop system. Select the protocol metric from the list. Or type the metric name in the Metric Name or Detail Metric Name fields and then select the protocol metric that matches that substring. Click OK.
      • If Trigger was selected as the Metric Source, then the Available Metrics list displays all the custom metrics available in the ExtraHop system. Select the metric name from the list. Or type the metric name in the Metric Name or Detail Metric Name fields and then select the protocol metric that matches that substring. Click OK.
    • To add a new line to the table, click New to add a new line to the table, and complete the following steps. Click the Display Name, Metric Name, or Detail Metric Name to type a metric name.
    • To display a detail metric as a top-level metric in a chart, apply the following syntax:
      • For built-in detail metrics, click New and type the metric name, the ? character, then a substring to match a key. For example: http_server_detail:req?10.10.6.79 or uri_http_server_detail:req?uri_substring
      • For custom detail metrics, type the prefix custom_detail:, the metric name, the ? character, and then a substring to match the key. For example: custom_detail:custom_detail_metric_name?substring
      Note:The substring must match one key exactly. If multiple keys are matched, results will be incorrect. You cannot plot sets of sets of detail metrics (for example, HTTP status codes and DB methods) as top-level metrics.
  11. Click OK.
  12. Click Done Editing above the custom page toolbar.

Add a trend chart to a page

  1. Log into the Web UI on the Discover or Command appliance. and then click Metrics at the top of the page.
  2. Select the protocol page that is assigned to a page you created. For example, if you assigned the All Activity application to your page, click Applications, select All Activity, and then select the name of your page in the left pane.
  3. In the upper right corner of the page, click Edit Page.
    The custom page toolbar appears below.
  4. Click Add Trend Chart.
  5. In the Add Trend Chart window, complete the following steps:in the Title field, type a name for the chart.
    1. In the Title field, type a chart name.
    2. In the Units Label field, type a label for the units in your chart.
    3. To show a logarithmic measurement in your chart, click the Use logarithmic scale checkbox. If you do not click the checkbox, the chart will show a linear measurement by default.
  6. Click Add Trend Line. For new charts, click Yes at the prompt to save the chart.
  7. Select your trend configurations and the select OK. You can add more trend lines to your chart.
  8. Click OK.
  9. Click Done Editing above the custom page toolbar.

Delete, disable, enable, or copy custom pages

  1. Click the System Settings icon at the top of the page.
  2. Click Pages.
  3. Search for the custom page that you want to manage. The Filter text box above the table supports substring matching and regular expressions.
  4. Select the checkbox next to the page(s) and then complete one of the following steps:
    • Click Copy. The name of the copied page is generated automatically by appending the word "(copy)" to the original name.
    • Click Delete to permanently remove the custom page from the ExtraHop system.
    • Click Enable. Custom pages that were previously disabled will become active and appear in the left panel.
    • Click Disable. The selected custom pages will become inactive and not be accessible from the left pane of protocol pages.

Trend configuration

You can add trend lines to your custom page. From the Trend Configuration window, you can specify the following information:

Trend Line

The Trend Line tab provides the following configuration settings to define the trend line:

Name
In the Name field, type a name for the trend.
Author
In the Author field, type a custom name. The author is set by the Discover appliance based or set manually by the user.
Disable Trend
Select Disable Trend to stop calculating data for the trend line.
Metric
In the Metric field, select a metric to calculate data for your trend. Click the gear icon to the right of this field. Trends with dataset and sampleset metrics have the following additional options:
Merge
Merges all the datasets and applies the trending function to one big dataset.
Mean
Takes the mean of each dataset.
Percentile
Allows you to set a percentile value of datasets.
Standard Deviation
Calculates the normal deviation compared to the current trend with the same standard deviation parameters as the trend. These parameters can be absolute or relative, and population or sample. Normalization displays the standard deviation relative to mean. Click the Normalization drop-down list and select one of the following options.
Absolute
Displays the standard deviation as a constant.
Relative to Mean
Displays the standard deviation relative to the mean.
Note:If the trend is not a standard deviation, it is calculated as an absolute sample.
Ratio
Click the Ratio checkbox if the data will be measured as a ratio.
Window
In the Window field, select one of the following calculations from a drop-down list:
Same Hour of Week
Calculates the trend within a specified 1-hour window each week.
Same Hour of Day
Calculates the trend within a specified 1-hour window each day.
Minute Rolling Average
Calculates the trend based on the average of the data gathered each minute within a specified amount of time from the present time.
Hour Rolling Average
Calculates the trend based on the average of the data gathered each hour within a specified amount of time from the present time.
Lookback
In the Lookback field, type the number of minutes of lookback to begin the trend calculation.

Weighting Model

Click the Weighting Model tab to select options for how to weigh the trend line. For more information about weighting models, see the ExtraHop blog post, Using Math Adds up to Better Alerts.

Mean
In the Mean field, select one of the following options from the drop-down list to calculate the average:
Linear Average
Calculates the average with all data points weighted equally.
Single Exponential
Calculates the average with the most recent data points weighted more heavily.
Double Exponential
Calculates the average with the most recent data points weighted the most heavily.

For linear averages, the most recent value is weighted at 1 times the oldest value by default. For single and double exponential means, enter a number to weight the most recent value.

Percentile
In the Percentile field, select one of the following options from the drop-down list to specify the percentile value that will be the basis for creating the trend:
Percentile
Records the trend with data points from a user-specified percentile.
Min Value
Records the lowest data point gathered during the time interval.
Max Value
Records the highest data point gathered during the time interval.
Regression
In the Regression field, select one of the following options from the drop-down list:
Linear
Calculates steadily increasing trends based on previous trends that are equally incremental.
2nd Degree Polynomial
Calculates exponentially accelerating trends by projecting a curve with the following equation:
y = ax2 + bx + c
Standard Deviation
In the Standard Deviation field, select one of the following options from the drop-down list to calculate the normal deviation compared to the current trend:
Type
Applies a sample-based or population-based standard deviation.
Normalization
Displays the standard deviation relative to mean.
Note:If a trend is a standard deviation, its associated alerts apply the same parameters as the trend. If the trend is not a standard deviation, then the alert is calculated as "sample" and "absolute".
Static Value
In the Static Value field, type a number that will be the basis for calculating a static value. A static value is useful for monitoring constant lines for service level agreements (SLAs) in a chart.
Time Delta
Select the Time Delta option to display the oldest trend, resulting in a time delta option based on the lookback window.
Trimean
Calculates the weighted average of the 25th, 50th, and 75th percentile values.
Winsorized Mean
In the Winsorized Mean field, select one of the following options from the drop-down list to replaces the most outlying values with the highest and lowest remaining values. Values above the 90th percentile become the same value as the 90th and values below the 10th percentile become the same value as 10th.

Multiplier

The Multiplier tab allows you to specify a multiple of the trend to appear in your chart, which can be useful for banding.

Multiplier
In the Multiplier field, type a number by which to multiply the trend line.
Offset
In the Offset field, type a number to display an offset line along the x-axis. Positive numbers offset forward and negative numbers offset backward. Click the drop-down list and select one of the following:
(absolute)
Displays the offset as a constant.
per minute
Calculates the offset per minute.
per hour
Calculates the offset per hour.

Exclusion Intervals

The Exclusion Intervals tab displays all the defined exclusion intervals that can be applied to trends. From this page, you can configure exclusion intervals. The Exclusion Intervals table contains the following information:
Name
Specifies the name of the exclusion interval.
Description
Provides a space for an optional, user-defined description.
Type
Specifies the type of exclusion interval, which includes the following options:
One-time
Specifies an exclusion period that occurs only once from a designated start time (date and time) to a designated end time (date and time).
Daily
Specifies an exclusion period that occurs every day from a designated starting hour to a designated ending hour.
Weekly
Specifies an exclusion period that occurs every week from a designated start time (day and time) to a designated end time (day and time).

Description

The Description tab provides a space for an optional, user-defined description of the trend.

History

The History tab displays changes that have been made to the trend. The table contains the following columns:

Change
Displays the change that was made to the trend.
Author
Displays the author of the change.
Timestamp
Displays when the change was made.
Published 2021-03-01 11:01