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Grafana Loki

ANALYTICS
Velocity6.3

Horizontally scalable log aggregation system

grafana.com/oss/loki ↗

Loki 4.0 reaches RC3 and narrows S3 storage classes to Standard and Standard-IA.

loggingobservabilitymajor-releasestoragebreaking-changes
◆Current state
Loki 4.0 is moving through release candidates. RC1's notes list the breaking changes: the V2 query engine unplugged, Simple Scalable Deployment targets and old /api/prom endpoints removed, protobuf as the default frontend encoding, and several deprecated settings and metrics dropped. RC2 removed every index backend but TSDB, and RC3 adds one more break, limiting S3 storage classes to STANDARD and STANDARD_IA, plus a compactor delete fix.
◆Where it's heading
Each candidate trims a bit more legacy surface, so 4.0 is a cleanup major that pushes installs onto TSDB and the microservices or single-binary layouts. The Operator had prepared this path since 0.11 and 0.12.
◆Prediction
Expect a few more RCs with small breaking changes, then 4.0.0 GA and an Operator release that drops the removed schemas.

◆Recent moves

  1. 3d ago

    Loki Helm chart 7.6.0 released

    A Helm chart release whose notes list only the release commit. Nothing user-visible is described while 4.0 moves through release candidates.

    View source ↗
  2. 6d ago

    Loki 4.0 RC3 limits S3 storage classes to Standard and IA

    One more breaking change, S3 storage classes limited to STANDARD and STANDARD_IA, plus a compactor fix for deletes. A small step on the path to 4.0 GA.

    View source ↗
  3. 8d ago

    Loki 4.0 RC1 lists the breaking changes for the major

    RC1's notes list the removals behind 4.0: SSD targets, the old /api/prom endpoints, deprecated settings and metrics, and the V2 query engine unplugged. It is the inventory that RC2's backend removal completed.

    View source ↗
  4. 9d ago

    Loki 4.0 RC drops legacy storage backends and SSD mode

    ⚡ SPARK

    The move the Operator releases were preparing for: 4.0 removes every index backend except TSDB and the Simple Scalable Deployment targets. It turns a year of deprecations into hard breaks.

    View source ↗
  5. 22d ago

    Loki Helm chart 7.5.0 released

    A chart release whose only listed change is a CI pin update. Nothing user-visible is described.

    View source ↗
  6. 1mo ago

    Loki Operator 0.12 requires schemas, adds OpenShift 5.0 TLS

    Operator 0.12.0 requires explicit storage schemas, prunes expired schemas by retention, adds OpenShift 5.0 TLS compliance and enables flush on shutdown. The required-schemas change is breaking for existing LokiStack manifests.

    View source ↗