Prometheus v3.10.0-rc.1 released

[Ganesh Vernekar]

We are pleased to announce that Prometheus 3.10 will soon be released,
with a number of enhancements, performance improvements and bug-fixes.

The release candidate v3.10.0-rc.1 is out for you to try out. We skipped the rc.0 due to CI issues.

With this release, Prometheus now offers a distroless Docker image variant alongside the default busybox image. There are a number of new features, couple of changes and no known breaking changes in this release:

[CHANGE] Alerting: Add alertmanager dimension to following metrics: prometheus_notifications_dropped_total, prometheus_notifications_queue_capacity, prometheus_notifications_queue_length. #16355
[CHANGE] UI: Hide expanded alert annotations by default, enabling more information density on the /alerts page. #17611
[FEATURE] AWS SD: Add MSK Role. #17600
[FEATURE] PromQL: Add fill() / fill_left() / fill_right() binop modifiers for specifying default values for missing series. #17644
[FEATURE] Web: Add OpenAPI 3.2 specification for the HTTP API at /api/v1/openapi.yaml. #17825
[FEATURE] Dockerfile: Add distroless image variant using UID/GID 65532 and no VOLUME declaration. Busybox image remains default. #17876
[FEATURE] Web: Add on-demand wall time profiling under <URL>/debug/pprof/fgprof. #18027

Not mentioned above is experimental support for early compaction of stale series which can be useful if you have high churn in your series.

Changelog and binaries are available at

https://github.com/prometheus/prometheus/releases/tag/v3.10.0-rc.1

As usual, container images are available at
https://hub.docker.com/r/prom/prometheus/tags?name=v3.10.0-rc.1 and
https://quay.io/repository/prometheus/prometheus?tab=tags.

Please try out the release candidate on a non-critical environment and
let us know what you find.

Thanks,

Ganesh