v0.42.0

This is release v0.42.0 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

Changes:

Security fixes

• Fixes following vulnerabilities (@ptodev)
  • GHSA-87m9-rv8p-rgmg
  • CVE-2024-35255
  • CVE-2024-6104
  • GHSA-mh55-gqvf-xfwm
  • CVE-2024-24790
  • CVE-2023-45288
  • CVE-2024-24788
  • CVE-2024-24789
  • CVE-2024-24791

Features

• A new otelcol.exporter.debug component for printing OTel telemetry from other otelcol components to the console. (@BarunKGP)

Bugfixes

• Fix an issue which caused the config to be reloaded if a config reload was triggered but the config hasn't changed.
  The bug only affected the "metrics" and "logs" subsystems in Static mode. (@ptodev)

• Fix a bug in Static mode and Flow which prevented config reloads to work if a Loki metrics stage is in the pipeline.
  This resulted in a "failed to unregister all metrics from previous promtail" message. (@ptodev)

Enhancements

• Update to Go 1.22.5. (@ptodev)

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