Distributed Tracing tracks the progression of a single Request, called a Trace, as it is handled by Services that make up an Application. A Distributed Trace transverses process, network and security boundaries. glossary
This requires context propagation, a mechanism where identifiers for a trace are sent to remote processes.
ℹ The OpenTelemetry Ruby SDK will take care of context propagation as long as your service is leveraging auto-instrumented libraries. Please refer to the README for more details.
In order to propagate trace context over the wire, a propagator must be registered with the OpenTelemetry SDK.
The W3 TraceContext and Baggage propagators are configured by default.
Operators may override this value by setting
OTEL_PROPAGATORS environment variable to a comma separated list of propagators.
For example, to add B3 propagation, set
OTEL_PROPAGATORS to the complete list of propagation formats you wish to support:
Propagators other than
baggage must be added as gem dependencies to your Gemfile, e.g.: