Update --alertmanager.max-silences-count to include expired silences (#…

…8249)

cmd/mimir/config-descriptor.json

@@ -4056,7 +4056,7 @@
           "kind": "field",
           "name": "alertmanager_max_silences_count",
           "required": false,
-          "desc": "Maximum number of active and pending silences that a tenant can have at once. 0 = no limit.",
+          "desc": "Maximum number of silences, including expired silences, that a tenant can have at once. 0 = no limit.",
           "fieldValue": null,
           "fieldDefaultValue": 0,
           "fieldFlag": "alertmanager.max-silences-count",

cmd/mimir/help-all.txt.tmpl

@@ -194,7 +194,7 @@ Usage of ./cmd/mimir/mimir:
   -alertmanager.max-silence-size-bytes int
     	Maximum silence size in bytes. 0 = no limit.
   -alertmanager.max-silences-count int
-    	Maximum number of active and pending silences that a tenant can have at once. 0 = no limit.
+    	Maximum number of silences, including expired silences, that a tenant can have at once. 0 = no limit.
   -alertmanager.max-template-size-bytes int
     	Maximum size of single template in tenant's Alertmanager configuration uploaded via Alertmanager API. 0 = no limit.
   -alertmanager.max-templates-count int

cmd/mimir/help.txt.tmpl

@@ -84,7 +84,7 @@ Usage of ./cmd/mimir/mimir:
   -alertmanager.max-silence-size-bytes int
     	Maximum silence size in bytes. 0 = no limit.
   -alertmanager.max-silences-count int
-    	Maximum number of active and pending silences that a tenant can have at once. 0 = no limit.
+    	Maximum number of silences, including expired silences, that a tenant can have at once. 0 = no limit.
   -alertmanager.max-template-size-bytes int
     	Maximum size of single template in tenant's Alertmanager configuration uploaded via Alertmanager API. 0 = no limit.
   -alertmanager.max-templates-count int

docs/sources/mimir/configure/configuration-parameters/index.md

@@ -3440,8 +3440,8 @@ The `limits` block configures default and per-tenant limits imposed by component
 # CLI flag: -alertmanager.max-config-size-bytes
 [alertmanager_max_config_size_bytes: <int> | default = 0]
 
-# Maximum number of active and pending silences that a tenant can have at once.
-# 0 = no limit.
+# Maximum number of silences, including expired silences, that a tenant can have
+# at once. 0 = no limit.
 # CLI flag: -alertmanager.max-silences-count
 [alertmanager_max_silences_count: <int> | default = 0]
 

go.mod

@@ -284,4 +284,4 @@ replace github.com/opentracing-contrib/go-stdlib => github.com/grafana/opentraci
 replace github.com/opentracing-contrib/go-grpc => github.com/charleskorn/go-grpc v0.0.0-20231024023642-e9298576254f
 
 // Replacing prometheus/alertmanager with our fork.
-replace github.com/prometheus/alertmanager => github.com/grafana/prometheus-alertmanager v0.25.1-0.20240531172444-6ad94e405c5a
+replace github.com/prometheus/alertmanager => github.com/grafana/prometheus-alertmanager v0.25.1-0.20240603081606-9f1bbb0feb0c

go.sum

@@ -521,8 +521,8 @@ github.com/grafana/mimir-prometheus v0.0.0-20240515135245-e5b85c151ba8 h1:XmqfG3
 github.com/grafana/mimir-prometheus v0.0.0-20240515135245-e5b85c151ba8/go.mod h1:ZlD3SoAHSwXK5VGLHv78Jh5kOpgSLaQAzt9gxq76fLM=
 github.com/grafana/opentracing-contrib-go-stdlib v0.0.0-20230509071955-f410e79da956 h1:em1oddjXL8c1tL0iFdtVtPloq2hRPen2MJQKoAWpxu0=
 github.com/grafana/opentracing-contrib-go-stdlib v0.0.0-20230509071955-f410e79da956/go.mod h1:qtI1ogk+2JhVPIXVc6q+NHziSmy2W5GbdQZFUHADCBU=
-github.com/grafana/prometheus-alertmanager v0.25.1-0.20240531172444-6ad94e405c5a h1:0zyw9u1O0PBB0bep9SyfM0sz2Q4XKYuNpTcIGkW3jSk=
-github.com/grafana/prometheus-alertmanager v0.25.1-0.20240531172444-6ad94e405c5a/go.mod h1:01sXtHoRwI8W324IPAzuxDFOmALqYLCOhvSC2fUHWXc=
+github.com/grafana/prometheus-alertmanager v0.25.1-0.20240603081606-9f1bbb0feb0c h1:Zgf0KrZy6of/6MQTRvzCVvKni/wWxEMWnipeqbo+0ek=
+github.com/grafana/prometheus-alertmanager v0.25.1-0.20240603081606-9f1bbb0feb0c/go.mod h1:01sXtHoRwI8W324IPAzuxDFOmALqYLCOhvSC2fUHWXc=
 github.com/grafana/pyroscope-go/godeltaprof v0.1.6 h1:nEdZ8louGAplSvIJi1HVp7kWvFvdiiYg3COLlTwJiFo=
 github.com/grafana/pyroscope-go/godeltaprof v0.1.6/go.mod h1:Tk376Nbldo4Cha9RgiU7ik8WKFkNpfds98aUzS8omLE=
 github.com/grafana/regexp v0.0.0-20240531075221-3685f1377d7b h1:oMAq12GxTpwo9jxbnG/M4F/HdpwbibTaVoxNA0NZprY=

pkg/alertmanager/multitenant.go

@@ -218,7 +218,7 @@ type Limits interface {
 	// AlertmanagerMaxConfigSize returns max size of configuration file that user is allowed to upload. If 0, there is no limit.
 	AlertmanagerMaxConfigSize(tenant string) int
 
-	// AlertmanagerMaxSilencesCount returns the max number of active and pending silences. If negative or 0, there is no limit.
+	// AlertmanagerMaxSilencesCount returns the max number of silences, including expired silences. If negative or 0, there is no limit.
 	AlertmanagerMaxSilencesCount(tenant string) int
 
 	// AlertmanagerMaxSilenceSizeBytes returns the max silence size in bytes. If negative or 0, there is no limit.

pkg/util/validation/limits.go

@@ -337,7 +337,7 @@ func (l *Limits) RegisterFlags(f *flag.FlagSet) {
 	}
 	f.Var(&l.NotificationRateLimitPerIntegration, "alertmanager.notification-rate-limit-per-integration", "Per-integration notification rate limits. Value is a map, where each key is integration name and value is a rate-limit (float). On command line, this map is given in JSON format. Rate limit has the same meaning as -alertmanager.notification-rate-limit, but only applies for specific integration. Allowed integration names: "+strings.Join(allowedIntegrationNames, ", ")+".")
 	f.IntVar(&l.AlertmanagerMaxConfigSizeBytes, "alertmanager.max-config-size-bytes", 0, "Maximum size of configuration file for Alertmanager that tenant can upload via Alertmanager API. 0 = no limit.")
-	f.IntVar(&l.AlertmanagerMaxSilencesCount, "alertmanager.max-silences-count", 0, "Maximum number of active and pending silences that a tenant can have at once. 0 = no limit.")
+	f.IntVar(&l.AlertmanagerMaxSilencesCount, "alertmanager.max-silences-count", 0, "Maximum number of silences, including expired silences, that a tenant can have at once. 0 = no limit.")
 	f.IntVar(&l.AlertmanagerMaxSilenceSizeBytes, "alertmanager.max-silence-size-bytes", 0, "Maximum silence size in bytes. 0 = no limit.")
 	f.IntVar(&l.AlertmanagerMaxTemplatesCount, "alertmanager.max-templates-count", 0, "Maximum number of templates in tenant's Alertmanager configuration uploaded via Alertmanager API. 0 = no limit.")
 	f.IntVar(&l.AlertmanagerMaxTemplateSizeBytes, "alertmanager.max-template-size-bytes", 0, "Maximum size of single template in tenant's Alertmanager configuration uploaded via Alertmanager API. 0 = no limit.")