How deeply does Logs and Telemetry cover match?

Defines -m and wildcard behavior with a runnable pipeline, but defers broader routing patterns.

Match

An event match is a Fluent Bit output-selection pattern that determines which tagged events an output receives.

An event match is a Fluent Bit output-selection pattern that determines which tagged events an output receives. The CLI applies it with -m after declaring the output with -o. section 2.1.3

Use event matches to control which events reach an output:

Use the wildcard * to send all tagged events to the output. section 2.1.3
Quote the wildcard in shell scripts so the shell does not interpret it; direct console commands can omit the quotes. section 2.1.3

Send every event to stdout

Run `fluent-bit -q -i dummy -p dummy="{\"hello\":\"my world\"}" -t dummy1 -o stdout -m '*'`. The dummy input receives tag `dummy1`, and the stdout output matches every event. section 2.1.3

Listing 2.1 Command-line-configured Fluent BIt

fluent-bit -q -i dummy -p dummy="{\"hello\":\"my world\"}" -t dummy1
 -o stdout -m '*'

Inspect the complete command-line configuration showing an output connected to a wildcard event match. section 2.1.3

How Logs and Telemetry covers it

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Related concepts

wildcarduses · A wildcard is a pattern symbol or expression that matches unspecified or variable characters, values, names, types, or path segments.
null output pluginconfigured by · A null output plugin is a Fluent Bit output component that accepts processed events and discards them without forwarding, storing, or sending them to an external destination.
rewrite_tag filterused by · The rewrite_tag filter is a Fluent Bit filter that conditionally changes event tags to alter routing, optionally emitting a retagged clone or replacing the original tag.
tagginguses · Tagging is the assignment of descriptive labels or metadata to information or resources to support their identification, classification, organization, filtering, or retrieval.
configurationconfigures · A specification of settings, parameters, or component relationships that determines how a system, application, model, or process is structured or operates.

This explainer was generated by Manning's knowledge graph from the text of Logs and Telemetry. The section links point to the parts of the book it draws on.