Jaeger data source

Grafana ships with built-in support for Jaeger, which provides open source, end-to-end distributed tracing. Just add it as a data source and you are ready to query your traces in Explore.

Add data source

To access Jaeger settings, click the Configuration (gear) icon, then click Data Sources > Jaeger.

NameDescription
NameThe data source name in panels, queries, and Explore.
DefaultThe pre-selected data source for a new panel.
URLThe URL of the Jaeger instance. For example, http://localhost:16686.
Basic AuthEnable basic authentication for the Jaeger data source.
UserSpecify a user name for basic authentication.
PasswordSpecify a password for basic authentication.

Trace to logs

Note: This feature is available in Grafana 7.4+.

This is a configuration for the trace to logs feature. Select target data source (at this moment limited to Loki data sources) and select which tags will be used in the logs query.

  • Data source - Target data source.
  • Tags - The tags that will be used in the Loki query. Default is 'cluster', 'hostname', 'namespace', 'pod'.
  • Span start time shift - Shift in the start time for the Loki query based on the span start time. In order to extend to the past, you need to use a negative value. Use time interval units like 5s, 1m, 3h. The default is 0.
  • Span end time shift - Shift in the end time for the Loki query based on the span end time. Time units can be used here, for example, 5s, 1m, 3h. The default is 0.

Query traces

You can query and display traces from Jaeger via Explore.

Screenshot of the Jaeger query editorJaeger - 图2

You can query by trace ID or use the search form to find traces. To query by trace ID, select the TraceID from the Query type selector and insert the ID into the text input.

Screenshot of the Jaeger query editor with trace ID selectedJaeger - 图4

To perform a search, set the query type selector to Search, then use the following fields to find traces:

  • Service - Returns a list of services.
  • Operation - Field gets populated once you select a service. It then lists the operations related to the selected service. Select All option to query all operations.
  • Tags - Use values in the logfmt format. For example error=true db.statement="select * from User".
  • Min Duration - Filter all traces with a duration higher than the set value. Possible values are 1.2s, 100ms, 500us.
  • Max Duration - Filter all traces with a duration lower than the set value. Possible values are 1.2s, 100ms, 500us.
  • Limit - Limits the number of traces returned.

Upload JSON trace file

You can upload a JSON file that contains a single trace to visualize it. If the file has multiple traces then the first trace is used for visualization.

Screenshot of the Jaeger data source in explore with upload selectedJaeger - 图6

Here is an example JSON:

  1. {
  2.   "data": [
  3.     {
  4.       "traceID": "2ee9739529395e31",
  5.       "spans": [
  6.         {
  7.           "traceID": "2ee9739529395e31",
  8.           "spanID": "2ee9739529395e31",
  9.           "flags": 1,
  10.           "operationName": "CAS",
  11.           "references": [],
  12.           "startTime": 1616095319593196,
  13.           "duration": 1004,
  14.           "tags": [
  15.             {
  16.               "key": "sampler.type",
  17.               "type": "string",
  18.               "value": "const"
  19.             }
  20.           ],
  21.           "logs": [],
  22.           "processID": "p1",
  23.           "warnings": null
  24.         }
  25.       ],
  26.       "processes": {
  27.         "p1": {
  28.           "serviceName": "loki-all",
  29.           "tags": [
  30.             {
  31.               "key": "jaeger.version",
  32.               "type": "string",
  33.               "value": "Go-2.25.0"
  34.             }
  35.           ]
  36.         }
  37.       },
  38.       "warnings": null
  39.     }
  40.   ],
  41.   "total": 0,
  42.   "limit": 0,
  43.   "offset": 0,
  44.   "errors": null
  45. }

Linking Trace ID from logs

You can link to Jaeger trace from logs in Loki by configuring a derived field with internal link. See the Derived fields section in the Loki data source documentation for details.

Configure the data source with provisioning

You can set up the data source via configuration files with Grafana’s provisioning system. Refer to provisioning docs page for more information on configuring various settings.

Here is an example with basic auth and trace-to-logs field.

  1. apiVersion: 1
  3. datasources:
  4.   - name: Jaeger
  5.     type: jaeger
  6.     uid: jaeger-spectra
  7.     access: proxy
  8.     url: http://localhost:16686/
  9.     basicAuth: true
  10.     basicAuthUser: my_user
  11.     editable: true
  12.     isDefault: false
  13.     jsonData:
  14.       tracesToLogs:
  15.         # Field with internal link pointing to a Loki data source in Grafana.
  16.         # datasourceUid value must match the `datasourceUid` value of the Loki data source.
  17.         datasourceUid: loki
  18.         tags:
  19.           - cluster
  20.           - hostname
  21.           - namespace
  22.           - pod
  23.     secureJsonData:
  24.       basicAuthPassword: my_password