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Zebra/book/src/user/tracing.md

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Tracing Zebra

Zebra supports dynamic tracing, configured using the config's TracingSection and (optionally) an HTTP RPC endpoint.

If the endpoint_addr is specified, zebrad will open an HTTP endpoint allowing dynamic runtime configuration of the tracing filter. For instance, if the config had endpoint_addr = '127.0.0.1:3000', then

  • curl -X GET localhost:3000/filter retrieves the current filter string;
  • curl -X POST localhost:3000/filter -d "zebrad=trace" sets the current filter string.

See the filter documentation for more details.

Zebra also has support for generating flamegraphs of tracing spans, configured using the flamegraph option.