Add `OTEL_SERVICE_NAME` environment variable #1677

iNikem · 2021-05-07T10:32:35Z

Closes #709

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Add OTEL_SERVICE_NAME environment variable to SDK configuration

Closes #709

arminru

@SergeyKanzhelev You seemed to have a strong opinion on #709, so please take a look at this proposal.

specification/sdk-environment-variables.md

arminru · 2021-05-07T13:09:21Z

specification/sdk-environment-variables.md

@@ -32,6 +32,7 @@ For example, the value `12000` indicates 12000 milliseconds, i.e., 12 seconds.
 | Name                     | Description                                       | Default                           | Notes                               |
 | ------------------------ | ------------------------------------------------- | --------------------------------- | ----------------------------------- |
 | OTEL_RESOURCE_ATTRIBUTES | Key-value pairs to be used as resource attributes |                                   | See [Resource SDK](./resource/sdk.md#specifying-resource-information-via-an-environment-variable) for more details. |
+| OTEL_SERVICE_NAME        | Sets the value of the [`service.name`](./resource/semantic_conventions/README.md#service) resource attribute | | If `service.name` is also provided in `OTEL_RESOURCE_ATTRIBUTES` then `OTEL_SERVICE_NAME` takes precedence. |


Should we also add OTEL_SERVICE_VERSION or add a note that service.version can be set via OTEL_RESOURCE_ATTRIBUTES?

I usually prefer to keep PR scope small, if possible. This PR solves one specific issue. I am happy to file a follow-up one, if you feel this is needed :)

That's reasonable. If we add it, it would ideally be in the same spec version, however, so SDK maintainers/implementers can tackle this tightly coupled feature at once. The next release is scheduled for early June, so we should be good here, as the follow-up should be as uncontroversial as this PR.

Same as #1677 (comment): I don't think the service version is used often enough to warrant it's own attribute. We did receive user requests for service.name AFAIK, but not for any others.

Co-authored-by: Armin Ruech <armin.ruech@dynatrace.com>

specification/sdk-environment-variables.md

SergeyKanzhelev

I am ok with the suggestion, but before merging, let's clarify whether environment variable should take precedence over the value set in code.

Spec PR: open-telemetry/opentelemetry-specification#1677

bogdandrutu

Question that is not answer:

Why service name is treated differently than any other resource attribute?

Spec PR: open-telemetry/opentelemetry-specification#1677

iNikem · 2021-05-11T11:56:41Z

Question that is not answer:

Why service name is treated differently than any other resource attribute?

It is the only de-facto "required" resource attribute
The majority of vendors already have similar variable (Add OTEL_SERVICE_NAME env variable #709 (comment)), so this is what end-users already expect
This PR does not preclude any other PR which adds support for other resource attributes.

iNikem · 2021-05-11T14:33:32Z

Question that is not answer:
Why service name is treated differently than any other resource attribute?

It is the only de-facto "required" resource attribute

The majority of vendors already have similar variable (#709 (comment)), so this is what end-users already expect

This PR does not preclude any other PR which adds support for other resource attributes.

Based on #1677 (comment) I will submit the PR about OTEL_SERVICE_VERSION after this one is merged.

iNikem · 2021-05-14T07:58:03Z

@bogdandrutu as discussed during spec SIG meeting, I tried to stress the significance of this specific attribute. Please check my changes in README.md

Oberon00 · 2021-05-14T08:04:45Z

CHANGELOG.md

@@ -23,6 +23,8 @@ release.

 ### SDK Configuration

+- Add `OTEL_SERVICE_NAME` environment variable. ([#1677](https://github.com/open-telemetry/opentelemetry-specification/pull/1677))


I have never heard of anyone using namespace (but maybe it just works so well that there are no questions?). instance.id has is currently IMHO too vaguely defined to be useful, as discussed in #1034. So the service name is IMHO definitely the most useful one.

specification/resource/semantic_conventions/README.md

carlosalberto · 2021-05-17T14:20:07Z

Ping @bogdandrutu

Co-authored-by: Armin Ruech <armin.ruech@dynatrace.com>

carlosalberto · 2021-05-20T12:24:13Z

@bogdandrutu ;)

Personally still believe we should not make this special but I would let the majority decide, I would not block but disagree with the change

iNikem · 2021-05-23T07:18:07Z

@open-telemetry/technical-committee Anybody feeling confident enough to merge this?

carlosalberto · 2021-05-24T13:52:23Z

@bogdandrutu Thanks for going on with the compromise, really appreciated. Merging (we will see in the long run how things unfold! ;) )

* Add OTEL_SERVICE_NAME environment variable Closes open-telemetry#709

iNikem added 2 commits May 7, 2021 10:57

Add OTEL_SERVICE_NAME environment variable

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Closes #709

Add changelog

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Update PR link in changelog

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Ease process for setting service.name signalfx/gdi-specification#78

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Update specification/sdk-environment-variables.md

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Add support for OTEL_SERVICE_NAME env var.

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Spec PR: open-telemetry/opentelemetry-specification#1677

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Add support for OTEL_SERVICE_NAME env var. open-telemetry/opentelemetry-python#1829

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Add support for OTEL_SERVICE_NAME env var.

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Spec PR: open-telemetry/opentelemetry-specification#1677

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Add support for OTEL_SERVICE_NAME env var.

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Spec PR: open-telemetry/opentelemetry-specification#1677

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Add support for OTEL_SERVICE_NAME env var.

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Add support for OTEL_SERVICE_NAME env var.

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Spec PR: open-telemetry/opentelemetry-specification#1677

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Add support for OTEL_SERVICE_NAME env var. (#1829)

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Spec PR: open-telemetry/opentelemetry-specification#1677

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Add support for OTEL_SERVICE_NAME env var. (open-telemetry#1829)

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Spec PR: open-telemetry/opentelemetry-specification#1677

iNikem added 2 commits May 14, 2021 10:55

More clearly say that service.name is a special attribute

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bogdandrutu mentioned this pull request May 18, 2021

Use service.namespace in Jager's service name if present #1710

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iNikem mentioned this pull request May 24, 2021

Add support for OTEL_SERVICE_NAME open-telemetry/opentelemetry-java#3249

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jtescher mentioned this pull request May 24, 2021

Expand support for OTEL_SERVICE_NAME open-telemetry/opentelemetry-rust#558

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evantorrie mentioned this pull request Jun 3, 2021

Enable Resource service.name detection from OTEL_SERVICE_NAME environment variable open-telemetry/opentelemetry-go#1968

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fbogsany mentioned this pull request Jun 8, 2021

fix: support OTEL_SERVICE_NAME env var open-telemetry/opentelemetry-ruby#806

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breedx-splk mentioned this pull request Jul 13, 2021

Support OTEL_SERVICE_NAME signalfx/splunk-otel-java#353

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breedx-splk mentioned this pull request Aug 23, 2021

Changelog, metrics manual instrumentation docs, and 1.3.0 pre-release changes signalfx/splunk-otel-java#421

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ssheng mentioned this pull request May 2, 2023

feat: Observability enhancement in tracing and logging bentoml/BentoML#3818

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carlosalberto pushed a commit to carlosalberto/opentelemetry-specification that referenced this pull request Oct 31, 2024

Add OTEL_SERVICE_NAME environment variable (open-telemetry#1677)

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* Add OTEL_SERVICE_NAME environment variable Closes open-telemetry#709

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Add `OTEL_SERVICE_NAME` environment variable #1677

Add `OTEL_SERVICE_NAME` environment variable #1677

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carlosalberto commented May 24, 2021

		@@ -23,6 +23,8 @@ release.

		### SDK Configuration

		- Add `OTEL_SERVICE_NAME` environment variable. ([#1677](https://github.com/open-telemetry/opentelemetry-specification/pull/1677))

Add OTEL_SERVICE_NAME environment variable #1677

Add OTEL_SERVICE_NAME environment variable #1677

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Add `OTEL_SERVICE_NAME` environment variable #1677

Add `OTEL_SERVICE_NAME` environment variable #1677