- Added JSON log format flag, new /api/v1/labels endpoint, and customizable web UI title via flags.
- Extended metrics and Service Discovery metadata (Azure, EC2, Kubernetes) plus performance improvements for remote write/read and TSDB.
- Fixed numerous bugs including duplicate handler labels, goroutine leaks, TSDB WAL repair issues, and various Service Discovery and scrape problems.
2.6.0 / 2018-12-17
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