Alerting: Limit and clean up old alert rules versions (#89754)

conf/defaults.ini

@@ -1346,6 +1346,11 @@ notification_log_retention = 5d
 # Duration for which a resolved alert state transition will continue to be sent to the Alertmanager.
 resolved_alert_retention = 15m
 
+# Defines the limit of how many alert rule versions
+# should be stored in the database for each alert rule in an organization including the current one.
+# 0 value means no limit
+rule_version_record_limit = 0
+
 [unified_alerting.screenshots]
 # Enable screenshots in notifications. You must have either installed the Grafana image rendering
 # plugin, or set up Grafana to use a remote rendering service.
@@ -1560,8 +1565,8 @@ expire_time = 7
 #################################### Internal Grafana Metrics ############
 # Metrics available at HTTP URL /metrics and /metrics/plugins/:pluginId
 [metrics]
-enabled              = true
-interval_seconds     = 10
+enabled = true
+interval_seconds = 10
 # Disable total stats (stat_totals_*) metrics to be generated
 disable_total_stats = false
 # The interval at which the total stats collector will update the stats. Default is 1800 seconds.

conf/sample.ini

@@ -1335,6 +1335,11 @@
 # Duration for which a resolved alert state transition will continue to be sent to the Alertmanager.
 ;resolved_alert_retention = 15m
 
+# Defines the limit of how many alert rule versions
+# should be stored in the database for each alert rule in an organization including the current one.
+# 0 value means no limit
+;rule_version_record_limit= 0
+
 [unified_alerting.screenshots]
 # Enable screenshots in notifications. You must have either installed the Grafana image rendering
 # plugin, or set up Grafana to use a remote rendering service.