Learn how to manage external links.

External links provide integration between Tanzu Observability (formerly known as VMware Aria Operations for Applications) and external systems.

  • External links are general purpose: you can link through to any type of system accessible from a URL.
  • The Log integration lets you drill down from a time series to a log entry in a logging system such as Scalyr, ELK, or Splunk. See Access and Examine External Logs for details.

All users can use the right-click menu on a time series to navigate to an external link.

  • By default, the external link shows up on all the time series.
  • If the creator of the external link specified a filter, the External Link menu only shows the link on specified time series.

To navigate to an external link:

  1. Right-click a series.
  2. Select External Links > <linkname>, where <linkname> is the name specified when the link was created.

    External links

Users with External Links permission can create and modify external links.

  1. Select Browse > External Links.
  2. Click Create External Link.
  3. Specify a link name and description.
  4. Specify the Link URL template.
  5. (Optional) Specify a filter to limit the external link from showing on a time series. For example, if you specify a point tag filter of env=production, you will only see the specified external link when you right click on a time series that has data related to that point tag.
  6. Click Save.

The link URL template uses Mustache syntax. The template supports these properties:

source Source of the series.
startEpochMillis Start time of the chart window, in Epoch time.
endEpochMillis End time of the chart window, in Epoch time.
<pointTagName1>, <pointTagName2>,... One or more point tag names associated with the series.

You can apply functions to transform the URL. All functions begin with the namespace functions. Simple examples are in the next section.

urlEncode URL Encoder
epochMillisToEpochSeconds Converts epoch milliseconds to epoch seconds.
epochMillisToISO Converts epoch milliseconds to an ISO8601 representation.
dateTimeFormat Takes an Epoch time and formats it according to the format specified in format using Java’s joda Date Time Format.
epochMillisEra,epochMilliscenturyOfEra, epochMillisyearOfEra,epochMillisYearOfCentury, epochMillisYear,epochMillisMonthOfYear, epochMillisDayOfYear,epochMillisDayOfMonth, epochMillisWeekyear,epochMillisWeekOfWeekyear, epochMillisDayOfWeek,epochMillisHalfDayOfDay, epochMillisClockHourOfHalfday,epochMillisClockHourOfDay, epochMillisHourOfHalfday,epochMillisHourOfDay, epochMillisMinuteOfDay,epochMillisMinuteOfHour, epochMillisSecondOfDay,epochMillisSecondOfMinute, epochMillisMillisOfDay,epochMillisMillisOfSecond 0 for BC, 1 for AD. See Joda-Time - Java date and time API.

Here’s the simplest possible example, directing you to the example.com domain.


The following external link URL template goes to scalyr.com and passes in the source of the series and the start and end time of the chart if a user right-clicks on a series.


The next external link URL template looks for a service trace in the distributed traces.


The following external link URL template displays an event on the Events page when you click the event in a chart.

Replace <my_instance> with the name of your product instance.


The following external link URL template references the point tag name service:

http://<hostname>?time:(from:'{{#functions.epochMillisToISO}}{{startEpochMillis}}{{/functions.epochMillisToISO}}',to:'{{#functions.epochMillisToISO}}{{endEpochMillis}}{{/functions.epochMillisToISO}}'))&{{#functions.urlEncode}}host:{{source}} AND source:"/mnt/logs/{{service}}.log"{{/functions.urlEncode}}'))

To get a date in this format: 2020-07-16T21:00:00.000Z you could do this:


Filter Regex Syntax

Filters are optional but allow you to show the external link only on certain time series.

Metric Filter Regex Regular expression that metric names must match. jvm.memory.heap\w+
Source Filter Regex Regular expression that source names must match. co-2a-app[0-9]+-i-\d+
Point Tag Filter Regexes Point tag key and a regular expression that point tag values must match. Click the plus sign after you specify the regex. Tag Key=env
Filter Regex=prod\w+

Filter Regex Example

When you specify a filter, only time series that match the filter shows the external link option.

The following screenshot shows an example that specifies all three types of filters.

Example filters for external links