v0.39.0-rc.0

[marctc]

This is release v0.39.0-rc.0 of Grafana Agent.

Upgrading

Read the relevant upgrade guides for specific instructions on upgrading from older versions:

• Static mode upgrade guide
• Static mode Kubernetes operator upgrade guide
• Flow mode upgrade guide

Notable changes:

Breaking changes

• otelcol.receiver.prometheus will drop all otel_scope_info metrics when converting them to OTLP. (@wildum)

  • If the otel_scope_info metric has labels otel_scope_name and otel_scope_version,
    their values will be used to set OTLP Instrumentation Scope name and version respectively.
  • Labels of otel_scope_info metrics other than otel_scope_name and otel_scope_version
    are added as scope attributes with the matching name and version.

• The target block in prometheus.exporter.blackbox requires a mandatory name
  argument instead of a block label. (@hainenber)

• In the azure exporter, dimension options will no longer be validated by the Azure API. (@kgeckhart)

  • This change will not break any existing configurations and you can opt in to validation via the validate_dimensions configuration option.
  • Before this change, pulling metrics for azure resources with variable dimensions required one configuration per metric + dimension combination to avoid an error.
  • After this change, you can include all metrics and dimensions in a single configuration and the Azure APIs will only return dimensions which are valid for the various metrics.

Features

• A new discovery.ovhcloud component for discovering scrape targets on OVHcloud. (@ptodev)

Enhancements

• Flow Windows service: Support environment variables. (@jkroepke)

• Allow disabling collection of root Cgroup stats in
  prometheus.exporter.cadvisor (flow mode) and the cadvisor integration
  (static mode). (@hainenber)

• Grafana Agent on Windows now automatically restarts on failure. (@hainenber)

• Added metrics, alerts and dashboard visualisations to help diagnose issues
  with unhealthy components and components that take too long to evaluate. (@thampiotr)

• The http config block may now reference exports from any component.
  Previously, only remote.* and local.* components could be referenced
  without a circular dependency. (@rfratto)

• Add support for Basic Auth-secured connection with Elasticsearch cluster using prometheus.exporter.elasticsearch. (@hainenber)

• Add a resource_to_telemetry_conversion argument to otelcol.exporter.prometheus
  for converting resource attributes to Prometheus labels. (@hainenber)

• pyroscope.ebpf support python on arm64 platforms. (@korniltsev)

• otelcol.receiver.prometheus does not drop histograms without buckets anymore. (@wildum)

• Added exemplars support to otelcol.receiver.prometheus. (@wildum)

• mimir.rules.kubernetes may now retry its startup on failure. (@hainenber)

• Added links between compatible components in the documentation to make it
  easier to discover them. (@thampiotr)

• Allow defining HTTPClientConfig for discovery.ec2. (@cmbrad)

• The remote.http component can optionally define a request body. (@tpaschalis)

• Added support for loki.write to flush WAL on agent shutdown. (@thepalbi)

• Add support for integrations-next static to flow config conversion. (@erikbaranowski)

• Add support for passing extra arguments to the static converter such as -config.expand-env. (@erikbaranowski)

• Added 'country' mmdb-type to log pipeline-stage geoip. (@superstes)

• Azure exporter enhancements for flow and static mode, (@kgeckhart)

  • Allows for pulling metrics at the Azure subscription level instead of resource by resource
  • Disable dimension validation by default to reduce the number of exporter instances needed for full dimension coverage

• Add max_cache_size to prometheus.relabel to allow configurability instead of hard coded 100,000. (@mattdurham)

• Add support for http_sd_config within a scrape_config for prometheus to flow config conversion. (@erikbaranowski)

• discovery.lightsail now supports additional parameters for configuring HTTP client settings. (@ptodev)

• Add sample_age_limit to remote_write config to drop samples older than a specified duration. (@marctc)

For a full list of changes, please refer to the CHANGELOG!

Installation

Refer to our installation guides for how to install the variants of Grafana Agent:

• Install static mode
• Install the static mode Kubernetes operator
• Install flow mode

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This discussion was created from the release v0.39.0-rc.0.