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CHANGELOG.md

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v0.3.0 (2020-05-13)

  • [FEATURE] A third operational mode called "scraping service mode" has been added. A KV store is used to store instance configs which are distributed amongst a clustered set of Agent processes, dividing the total scrape load across each agent. An API is exposed on the Agents to list, create, update, and delete instance configurations from the KV store. (@rfratto)

  • [FEATURE] An "agentctl" binary has been released to interact with the new instance config management API created by the "scraping service mode." (@rfratto, @hoenn)

  • [FEATURE] The Agent now includes readiness and healthiness endpoints. (@rfratto)

  • [ENHANCEMENT] The YAML files are now parsed strictly and an invalid YAML will generate an error at runtime. (@hoenn)

  • [ENHANCEMENT] The default build mode for the Docker containers is now release, not debug. (@rfratto)

  • [ENHANCEMENT] The Grafana Agent Tanka Mixins now are placed in an "Agent" folder within Grafana. (@cyriltovena)

v0.2.0 (2020-04-09)

  • [FEATURE] The Prometheus remote write protocol will now send scraped metadata (metric name, help, type and unit). This results in almost negligent bytes sent increase as metadata is only sent every minute. It is on by default. (@gotjosh)

    These metrics are available to monitor metadata being sent:

    • prometheus_remote_storage_succeeded_metadata_total
    • prometheus_remote_storage_failed_metadata_total
    • prometheus_remote_storage_retried_metadata_total
    • prometheus_remote_storage_sent_batch_duration_seconds and prometheus_remote_storage_sent_bytes_total have a new label “type” with the values of metadata or samples.

  • [FEATURE] The Agent has upgraded its vendored Prometheus to v2.17.1 (@rfratto)

  • [BUGFIX] Invalid configs passed to the agent will now stop the process after they are logged as invalid; previously the Agent process would continue. (@rfratto)

  • [BUGFIX] Enabling host_filter will now allow metrics from node role Kubernetes service discovery to be scraped properly (e.g., cAdvisor, Kubelet). (@rfratto)

v0.1.1 (2020-03-16)

  • Nits in documentation (@sh0rez)
  • Fix various dashboard mixin problems from v0.1.0 (@rfratto)
  • Pass through release tag to docker build (@rfratto)

v0.1.0 (2020-03-16)

First (beta) release!

This release comes with support for scraping Prometheus metrics and sharding the agent through the presence of a host_filter flag within the Agent configuration file.

Note that enabling the host_filter flag currently works best when using our preferred Kubernetes deployment, as it deploys the agent as a DaemonSet.