Update internal tracing docs (#162372)

## Summary

The documentation for the instrumentation of Kibana listed a lot of
settings to apply. Most of them are not needed since we have good
defaults for the agents. Additional information like
`labels.deploymentId` are automatically appended in case of usage with
ECE.

### Checklist

Delete any items that are not applicable to this PR.

- [x]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials


### Risk Matrix

Delete this section if it is not applicable to this PR.

Before closing this PR, invite QA, stakeholders, and other developers to
identify risks that should be tested prior to the change/feature
release.

When forming the risk matrix, consider some of the following examples
and how they may potentially impact the change:

| Risk | Probability | Severity | Mitigation/Notes |

|---------------------------|-------------|----------|-------------------------|
| Multiple Spaces—unexpected behavior in non-default Kibana Space.
| Low | High | Integration tests will verify that all features are still
supported in non-default Kibana Space and when user switches between
spaces. |
| Multiple nodes—Elasticsearch polling might have race conditions
when multiple Kibana nodes are polling for the same tasks. | High | Low
| Tasks are idempotent, so executing them multiple times will not result
in logical error, but will degrade performance. To test for this case we
add plenty of unit tests around this logic and document manual testing
procedure. |
| Code should gracefully handle cases when feature X or plugin Y are
disabled. | Medium | High | Unit tests will verify that any feature flag
or plugin combination still results in our service operational. |
| [See more potential risk
examples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) |


### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)
This commit is contained in:
Philipp Kahr 2023-10-27 09:15:20 +02:00 committed by GitHub
parent 0d5a1b0bb1
commit 6c2071eb0e
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23

View file

@ -23,7 +23,7 @@ For example:
```json
{
"user_settings_override_yaml": "elastic.apm.active: true\nelastic.apm.serverUrl: https://<my_apm_endpoint>\nelastic.apm.secretToken: <my_APM_token>\nelastic.apm.globalLabels.deploymentId: <my_deployment_ID>\nelastic.apm.centralConfig: false\nelastic.apm.breakdownMetrics: false\nelastic.apm.transactionSampleRate: 0.1\nelastic.apm.metricsInterval: 120s\nelastic.apm.captureSpanStackTraces: false"
"user_settings_override_yaml": "elastic.apm.active: true\nelastic.apm.serverUrl: https://<my_apm_endpoint>\nelastic.apm.secretToken: <my_APM_token>"
}
```
@ -37,12 +37,6 @@ For on-premise deployments or developers outside Elastic, you can configure an A
elastic.apm.active: true
elastic.apm.serverUrl: https://<my_apm_endpoint>
elastic.apm.secretToken: <my_APM_token>
elastic.apm.globalLabels.deploymentId: <my_deployment_ID>
elastic.apm.centralConfig: false
elastic.apm.breakdownMetrics: false
elastic.apm.transactionSampleRate: 0.1
elastic.apm.metricsInterval: 120s
elastic.apm.captureSpanStackTraces: false
```
When running in ECE you can update `kibana.yml` settings via the ECE web UI under "Edit user setting" for the kibana nodes in the deployment.