How deeply does Cloud Observability in Action cover forward input plugin?

Defines the plugin and demonstrates its address, port, and routing configuration without descending into protocol internals.

Forward input plugin

As explained in Cloud Observability in Action

The Forward input plugin is a Fluent Bit input component that receives log records through the Fluentd Forward protocol.

The Forward input plugin is a Fluent Bit input component that receives log records through the Fluentd Forward protocol. Configure it with the input name `forward`, a listening address, and a port. section 4.1.1

Container log pipeline

A Docker container can use the Fluentd logging driver to send tagged records to Fluent Bit on port 24224. Fluent Bit accepts them through the Forward input and routes matching records to OpenSearch for querying and visualization. section 4.1.1

Listing 4.4 Fluent Bit configuration

[INPUT]
    Name forward            #1
    Listen 0.0.0.0          #2
    Port 24224              #3
 
[OUTPUT]
    Name opensearch         #4
    Match **                #5
    Host opensearch-node1   #6
    Port 9200
    Index ho11y             #7
    Suppress_Type_Name on   #8

Inspect the minimal Fluent Bit configuration: the Forward input listens on all interfaces at port 24224, while an OpenSearch output matches all records. section 4.1.1

How Cloud Observability in Action covers it

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Also explained in

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Logs and TelemetryA forward input plugin is a Fluent Bit input extension that receives events encoded with the forward protocol.

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Related concepts

fluentduses · Fluentd is an open-source data collector that gathers, processes, transforms, and routes logs and other machine-generated event data through pluggable integrations.
forward protocolimplements · The forward protocol is a binary event-transfer protocol that defines a payload format for interoperable log and telemetry transmission.
TLSuses · Transport Layer Security (TLS) is a cryptographic protocol that protects network communications through confidentiality, integrity, and authentication of communicating endpoints.
FluentBitused by · Fluent Bit is a lightweight, open-source telemetry agent for collecting, processing, enriching, and forwarding logs and other event data.

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