shreemaan-abhishek commented on code in PR #8834:
URL: https://github.com/apache/apisix/pull/8834#discussion_r1103833245
##########
docs/en/latest/plugins/opentelemetry.md:
##########
@@ -89,6 +89,31 @@ plugin_attr:
max_export_batch_size: 2
```
+## Variables
+
+The following nginx variables are set by the opentelemetry:
+
+- `opentelemetry_context_traceparent` - [W3C trace
context](https://www.w3.org/TR/trace-context/#trace-context-http-headers-format),
e.g.: `00-0af7651916cd43dd8448eb211c80319c-b9c7c989f97918e1-01`
+- `opentelemetry_trace_id` - Trace Id of the current span
+- `opentelemetry_span_id` - Span Id of the current span
+
+How to use variables ？you have to add it to your configuration file
(`conf/config.yaml`):
Review Comment:
```suggestion
How to use variables? You have to add it to your configuration file
(`conf/config.yaml`):
```
##########
docs/en/latest/plugins/opentelemetry.md:
##########
@@ -89,6 +89,31 @@ plugin_attr:
max_export_batch_size: 2
```
+## Variables
+
+The following nginx variables are set by the opentelemetry:
Review Comment:
```suggestion
The following nginx variables are set by OpenTelemetry:
```
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