- [BREAKING] Remove ENV var support for most non-sensitive options. #518
- [BREAKING] Rename elasticsearch_process_cpu_time_seconds_sum to elasticsearch_process_cpu_seconds_total #520
- [FEATURE] Add metric for index aliases #563
- [FEATURE] Add metric for number of shards on a node #535
- [FEATURE] Add metrics for SLM (snapshot lifecycle management) #558
- [FEATURE] Add metric for JVM uptime #537
- [FEATURE] Add metrics for current searches and current indexing documents #485
- [BUGFIX] Remove the elasticsearch_process_cpu_time_seconds_sum metric as it was never used #498