open-telemetry/opentelemetry-collector v0.104.0 on GitHub

⚠️ This release includes 2 very important breaking changes.

The otlpreceiver now uses localhost by default instead of 0.0.0.0. This may break the receiver in containerized environments like Kubernetes. If you depend on 0.0.0.0 disable the component.UseLocalHostAsDefaultHost feature gate or explicitly set the endpoint to 0.0.0.0.
Expansion of BASH-style environment variables, such as $FOO is no longer supported by default. If you depend on this syntax, disable the confmap.unifyEnvVarExpansion feature gate, but know that the feature will be removed in the future in favor of ${env:FOO}.

End User Changelog

filter: Remove deprecated filter.CombinedFilter (#10348)
otelcol: By default, otelcol.NewCommand and otelcol.NewCommandMustSetProvider will set the DefaultScheme to env. (#10435)
expandconverter: By default expandconverter will now error if it is about to expand $FOO syntax. Update configuration to use ${env:FOO} instead or disable the confmap.unifyEnvVarExpansion feature gate. (#10435)
otlpreceiver: Switch to localhost as the default for all endpoints. (#8510)
Disable the component.UseLocalHostAsDefaultHost feature gate to temporarily get the previous default.

confighttp: Add support for cookies in HTTP clients with cookies::enabled. (#10175)
The method confighttp.ToClient will return a client with a cookiejar.Jar which will reuse cookies from server responses in subsequent requests.
exporter/debug: In normal verbosity, display one line of text for each telemetry record (log, data point, span) (#7806)
exporter/debug: Add option use_internal_logger (#10226)
configretry: Mark module as stable. (#10279)
debugexporter: Print Span.TraceState() when present. (#10421)
Enables viewing sampling threshold information (as by OTEP 235 samplers).
processorhelper: Add "inserted" metrics for processors. (#10353)
This includes the following metrics for processors:
- processor_inserted_spans
- processor_inserted_metric_points
- processor_inserted_log_records

otlpexporter: Update validation to support both dns:// and dns:/// (#10449)
service: Fixed a bug that caused otel-collector to fail to start with ipv6 metrics endpoint service telemetry. (#10011)

otelcol: The otelcol.NewCommand now requires at least one provider be set. (#10436)
component/componenttest: Added additional "inserted" count to TestTelemetry.CheckProcessor* methods. (#10353)

otelcoltest: Deprecates LoadConfigWithSettings and LoadConfigAndValidateWithSettings. Use LoadConfig and LoadConfigAndValidate instead. (#10417)
otelcol: The otelcol.NewCommandMustSetProvider is deprecated. Use otelcol.NewCommand instead. (#10436)

otelcoltest: Split off go.opentelemetry.io/collector/otelcol/otelcoltest into its own module (#10417)