- Rollback Dockerfile to version 2.5.0, undoing the breaking change from 2.6.0 and deprecate the storage.tsdb.retention flag in favor of storage.tsdb.retention.time (warning emitted).
- Introduce new features: PromQL subqueries, experimental disk‑size based retention, CORS origin flag, and multiple service‑discovery metadata enhancements for Consul, Kubernetes, Azure Managed Identity, and OpenStack.
- Fix numerous bugs in tsdb retention overflow, block size handling, WAL corruption metric, and alert unit test ordering/duplication.
2.7.0 / 2019-01-28
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