The specification states:

SDKs MAY choose to allow configuration via the environment variables in this specification, but are not required to. If they do, they SHOULD use the names listed in this document.

Currently we only support the OTEL_RESOURCE_ATTRIBUTES environment variable and have plans to support the OTLP exporter configuration via environment variables.

To accelerate the release of a stable 1.0.0 release we have postponed implementing this. After this release we need to implement the specified environment variables to support users requiring this.

• OTEL_RESOURCE_ATTRIBUTES
• OTEL_LOG_LEVEL
• OTEL_PROPAGATORS
• OTEL_TRACES_SAMPLER
• OTEL_TRACES_SAMPLER_ARG
• OTEL_BSP_SCHEDULE_DELAY
• OTEL_BSP_EXPORT_TIMEOUT
• OTEL_BSP_MAX_QUEUE_SIZE
• OTEL_BSP_MAX_EXPORT_BATCH_SIZE
• OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT
• OTEL_SPAN_EVENT_COUNT_LIMIT
• OTEL_SPAN_LINK_COUNT_LIMIT
• OTEL_EXPORTER_JAEGER_AGENT_HOST
• OTEL_EXPORTER_JAEGER_AGENT_PORT
• OTEL_EXPORTER_JAEGER_ENDPOINT
• OTEL_EXPORTER_JAEGER_USER
• OTEL_EXPORTER_JAEGER_PASSWORD
• OTEL_EXPORTER_ZIPKIN_ENDPOINT
• OTEL_TRACES_EXPORTER