OpenTelemetry

An output plugin to submit Logs, Metrics, or Traces to an OpenTelemetry endpoint

The OpenTelemetry plugin allows you to take logs, metrics, and traces from Calyptia Fluent Bit and submit them to an OpenTelemetry HTTP endpoint.

Important Note: At the moment only HTTP endpoints are supported.

Key	Description	Default
host	IP address or hostname of the target HTTP Server	127.0.0.1
http_user	Basic Auth Username
http_passwd	Basic Auth Password. Requires HTTP_user to be set
port	TCP port of the target HTTP Server	80
proxy	Specify an HTTP Proxy. The expected format of this value is http://HOST:PORT. Note that HTTPS is not currently supported. It is recommended not to set this and to configure the HTTP proxy environment variables instead as they support both HTTP and HTTPS.
metrics_uri	Specify an optional HTTP URI for the target web server listening for metrics, e.g: /v1/metrics	/
logs_uri	Specify an optional HTTP URI for the target web server listening for logs, e.g: /v1/logs	/
traces_uri	Specify an optional HTTP URI for the target web server listening for traces, e.g: /v1/traces	/
header	Add a HTTP header key/value pair. Multiple headers can be set.
log_response_payload	Log the response payload within the Calyptia Fluent Bit log	false
add_label	This allows you to add custom labels to all metrics exposed through the OpenTelemetry exporter. You may have multiple of these fields
compress	Set payload compression mechanism. Option available is 'gzip'

Getting Started

The OpenTelemetry plugin works with logs and only the metrics collected from one of the metric input plugins. In the following example, log records generated by the dummy plugin and the host metrics collected by the node exporter metrics plugin are exported by the OpenTelemetry output plugin.

# Dummy Logs & traces with Node Exporter Metrics export using OpenTelemetry output plugin
# -------------------------------------------
# The following example collects host metrics on Linux and dummy logs & traces and delivers
# them through the OpenTelemetry plugin to a local collector :
#
[SERVICE]
    Flush                1
    Log_level            info

[INPUT]
    Name                 node_exporter_metrics
    Tag                  node_metrics
    Scrape_interval      2

[INPUT]
    Name                 dummy
    Tag                  dummy.log
    Rate                 3

[INPUT]
    Name                 event_type
    Type                 traces

[OUTPUT]
    Name                 opentelemetry
    Match                *
    Host                 localhost
    Port                 443
    Metrics_uri          /v1/metrics
    Logs_uri             /v1/logs
    Traces_uri           /v1/traces
    Log_response_payload True
    Tls                  On
    Tls.verify           Off
    # add user-defined labels
    add_label            app fluent-bit
    add_label            color blue