Change Prometheus Exporter default host to localhost (open-telemetry#…

…2282) * Change Prometheus Exporter default host to localhost * update changelog Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
carlosalberto · Jan 25, 2022 · 2e514e1 · 2e514e1
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -34,6 +34,8 @@ release.
   ([#2210](/~https://github.com/open-telemetry/opentelemetry-specification/pull/2210))
 - Use UCUM units in Metrics Semantic Conventions.
   ([#2199](/~https://github.com/open-telemetry/opentelemetry-specification/pull/2199))
+- Changed default Prometheus Exporter host from `0.0.0.0` to `localhost`.
+  ([#2282](/~https://github.com/open-telemetry/opentelemetry-specification/pull/2282))
 
 ### Logs
 

diff --git a/specification/sdk-environment-variables.md b/specification/sdk-environment-variables.md
@@ -159,7 +159,7 @@ thrift or protobuf.  As of 1.0 of the specification, there
 
 | Name                          | Description                     | Default                      |
 | ----------------------------- | --------------------------------| ---------------------------- |
-| OTEL_EXPORTER_PROMETHEUS_HOST | Host used by the Prometheus exporter | All addresses: "0.0.0.0"|
+| OTEL_EXPORTER_PROMETHEUS_HOST | Host used by the Prometheus exporter | "localhost"             |
 | OTEL_EXPORTER_PROMETHEUS_PORT | Port used by the Prometheus exporter | 9464                    |
 
 ## Exporter Selection