- Added token‑based authentication for Marathon service discovery with support for basic/bearer auth and file‑based password configuration.
- Introduced new Promtool query commands, security headers on HTTP responses, remote‑read query hints and performance enhancements such as metric name changes, memory/serialization optimizations, filtered service discovery, and TSDB flock‑...
- Fixed numerous bugs including storage error propagation, web path prefix handling, goroutine leaks, OOM in topk() queries, and made remote‑write more resilient.
2.3.0 / 2018-06-07
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Deprecate non‑true/all values for the stats query parameter on /api/v1/query and /api/v1/query_range, now returning a warning and slated for removal in the next major release.
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