fluent-plugin-prometheus/ChangeLog at master · fluent/fluent-plugin-prometheus · GitHub

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Release 2.3.0 - 2026/09/02

	* in_prometheus: Change default bind address to 127.0.0.1. (#258)
          This is incompatible behavior change.
	* in_prometheus: Do not disclosure error details for client (#259)
	* in_prometheus: Add `ignore_error_log_interval` parameter to suppress repeated error logs (#259,#264)
          This introduces the log throttling feature.
	* filter_prometheus: Do not let placeholders built from records override the tag ones (#262)
	* out_prometheus: Fix a bug that a failing record never reached to @ERROR (#263)
	* Support `max_series_per_metric` to limit label sets cardinarity. (#265)
	* Refuse wrong <initlabels> which cannot fit into `max_series_per_metric` (#266,#267)
          This blocks `max_series_per_metric` mis-configuration on startup.

Release 2.2.2 - 2026/03/27

	* in_prometheus: fix: Add IPv6 support for bind parameter (#240)

Release 2.2.1 - 2025/03/24

	* in_prometheus_tail_monitor: Add throttling metrics as `fluentd_tail_file_throttled`. (GitHub#227)

Release 2.2.0 - 2024/08/02

	* in_prometheus: Add gzip support (Add a new parameter `content_encoding gzip`)

Release 2.1.0 - 2023/06/15

	* Add `initialized` and `initlabels` parameters to `<metric>` element
	* in_prometheus_tail_monitor: Add file open/closed/rotation metrics

Release 2.0.3 - 2022/05/06

	* in_prometheus_output_monitor: Fix a bug where output_status_num_errors metric is missing

Release 2.0.2 - 2021/08/02

	* in_prometheus_output_monitor: Follow Fluentd's core metrics mechanism

Release 2.0.1 - 2021/04/08

	* out_prometheus: Allow for lookup by symbol as well as string

Release 2.0.0 - 2021/02/18

	* Update prometheus-client dependency to 2.1.0 or later

Release 1.8.5 - 2020/11/24

	* in_prometheus_monitor: Support USR2 reload

Release 1.8.4 - 2020/09/24

	* in_prometheus_output_monitor: Add gauge_all parameter

Release 1.8.3 - 2020/08/24

	* Fix resourcr leak in async-http based server

Release 1.8.2 - 2020/07/17

	* in_prometheus_output_monitor/in_prometheus_tail_monitor: Support USR2 reload

Release 1.8.1 - 2020/07/06

	* Fix aggregate bug with async-http

Release 1.8.0 - 2020/04/17

	* Use http_server helper
	* Require fluentd v1.9.1 or later


For older releases, see commits on github repository.