22 lines
1.0 KiB
Markdown
22 lines
1.0 KiB
Markdown
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# Tracing Zebra
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Zebra supports dynamic tracing, configured using the config's
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[`TracingSection`][tracing_section] and (optionally) an HTTP RPC endpoint.
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If the `endpoint_addr` is specified, `zebrad` will open an HTTP endpoint
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allowing dynamic runtime configuration of the tracing filter. For instance,
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if the config had `endpoint_addr = '127.0.0.1:3000'`, then
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* `curl -X GET localhost:3000/filter` retrieves the current filter string;
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* `curl -X POST localhost:3000/filter -d "zebrad=trace"` sets the current filter string.
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See the [`filter`][filter] documentation for more details.
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Zebra also has support for generating [flamegraphs] of tracing spans,
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configured using the [`flamegraph`][flamegraph] option.
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[tracing_section]: https://doc.zebra.zfnd.org/zebrad/config/struct.TracingSection.html
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[filter]: https://doc.zebra.zfnd.org/zebrad/config/struct.TracingSection.html#structfield.filter
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[flamegraph]: https://doc.zebra.zfnd.org/zebrad/config/struct.TracingSection.html#structfield.flamegraph
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[flamegraphs]: http://www.brendangregg.com/flamegraphs.html
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