This is release v1.2.0-rc.0 of Grafana Alloy.

Upgrading

Full a full list of changes, refer to the v1.2.0-rc.0 CHANGELOG.

Notable changes:

Breaking changes

• Updated OpenTelemetry to v0.102.1. (@mattdurham)
  • Components otelcol.receiver.otlp,otelcol.receiver.zipkin,otelcol.extension.jaeger_remote_sampling, and otelcol.receiver.jaeger setting max_request_body_size default changed from unlimited size to 20MiB. This is due to CVE-2024-36129.

Breaking changes to non-GA functionality

• Component otelcol.receiver.vcenter removed vcenter.host.network.packet.errors, vcenter.host.network.packet.count, and vcenter.vm.network.packet.count.
  • vcenter.host.network.packet.errors replaced by vcenter.host.network.packet.error.rate.
  • vcenter.host.network.packet.count replaced by vcenter.host.network.packet.rate.
  • vcenter.vm.network.packet.count replaced by vcenter.vm.network.packet.rate.

Features

• Add an otelcol.exporter.kafka component to send OTLP metrics, logs, and traces to Kafka.

• Added live debugging to the UI. Live debugging streams data as they flow through components for debugging telemetry data. Individual components must be updated to support live debugging. (@wildum)

• Added live debugging support for prometheus.relabel. (@wildum)

• (Experimental) Add a otelcol.processor.deltatocumulative component to convert metrics from delta temporality to cumulative by accumulating samples in memory. (@rfratto)

• (Experimental) Add an otelcol.receiver.datadog component to receive metrics and traces from Datadog. (@carrieedwards, @jesusvazquez, @alexgreenbank, @fedetorres93)

Enhancements

• (Public preview) Add native histogram support to otelcol.receiver.prometheus. (@wildum)

• Added scrape_protocols option to prometheus.scrape, which allows to control the preferred order of scrape protocols. (@thampiotr)

• Improved filesystem error handling when working with loki.source.file and local.file_match, which removes some false-positive error log messages on Windows (@thampiotr)

• Updates receiver/vcenter to use new features and bugfixes introduced in OTEL releases v0.100.0 and v0.101.0. Refer to the v0.100.0 and v0.101.0 release notes for more detailed information.

• Add yaml_decode to standard library. (@mattdurham, @djcode)

• Add base64_decode to standard library. (@hainenber)

• Updated OpenTelemetry Contrib to v0.102.0. (@mattdurham)

• otelcol.processor.resourcedetection: Added a tags config argument to the azure detection mechanism. It exposes regex-matched Azure resource tags as OpenTelemetry resource attributes.

Bugfixes

• Fixed an issue with prometheus.scrape in which targets that move from one cluster instance to another could have a staleness marker inserted and result in a gap in metrics (@thampiotr)

• Fix panic when import.git is given a revision that does not exist on the remote repo. (@hainenber)

• Fixed an issue with loki.source.docker where collecting logs from targets configured with multiple networks would result in errors. (@wildum)

Installation

Refer to our installation guide for how to install Grafana Alloy.