[release-2.9.x] Allow using the forget button when access via the internal server (#10443)

Backport e5c425eef6 from #10221 

Co-authored-by: Periklis Tsirakidis <periklis@redhat.com>

CHANGELOG.md

@@ -78,6 +78,7 @@
 * [9949](https://github.com/grafana/loki/pull/9949) **masslessparticle**: Fix pipelines to clear caches when tailing to avoid resource exhaustion.
 * [9936](https://github.com/grafana/loki/pull/9936) **masslessparticle**: Fix the way query stages are reordered when `unpack` is present.
 * [10309](https://github.com/grafana/loki/pull/10309) **akhilanarayanan**: Fix race condition in series index store.
+* [10221](https://github.com/grafana/loki/pull/10221) **periklis**: Allow using the forget button when access via the internal server
 
 ##### Changes
 

pkg/loki/modules.go

@@ -215,7 +215,7 @@ func (t *Loki) initRing() (_ services.Service, err error) {
 	t.Server.HTTP.Path("/ring").Methods("GET", "POST").Handler(t.ring)
 
 	if t.Cfg.InternalServer.Enable {
-		t.InternalServer.HTTP.Path("/ring").Methods("GET").Handler(t.ring)
+		t.InternalServer.HTTP.Path("/ring").Methods("GET", "POST").Handler(t.ring)
 	}
 	return t.ring, nil
 }
@@ -320,7 +320,7 @@ func (t *Loki) initDistributor() (services.Service, error) {
 	t.Server.HTTP.Path("/distributor/ring").Methods("GET", "POST").Handler(t.distributor)
 
 	if t.Cfg.InternalServer.Enable {
-		t.InternalServer.HTTP.Path("/distributor/ring").Methods("GET").Handler(t.distributor)
+		t.InternalServer.HTTP.Path("/distributor/ring").Methods("GET", "POST").Handler(t.distributor)
 	}
 
 	t.Server.HTTP.Path("/api/prom/push").Methods("POST").Handler(pushHandler)
@@ -979,7 +979,7 @@ func (t *Loki) initRuler() (_ services.Service, err error) {
 		t.Server.HTTP.Path("/ruler/ring").Methods("GET", "POST").Handler(t.ruler)
 
 		if t.Cfg.InternalServer.Enable {
-			t.InternalServer.HTTP.Path("/ruler/ring").Methods("GET").Handler(t.ruler)
+			t.InternalServer.HTTP.Path("/ruler/ring").Methods("GET", "POST").Handler(t.ruler)
 		}
 
 		base_ruler.RegisterRulerServer(t.Server.GRPC, t.ruler)
@@ -1150,7 +1150,7 @@ func (t *Loki) initCompactor() (services.Service, error) {
 	t.Server.HTTP.Path("/compactor/ring").Methods("GET", "POST").Handler(t.compactor)
 
 	if t.Cfg.InternalServer.Enable {
-		t.InternalServer.HTTP.Path("/compactor/ring").Methods("GET").Handler(t.compactor)
+		t.InternalServer.HTTP.Path("/compactor/ring").Methods("GET", "POST").Handler(t.compactor)
 	}
 
 	if t.Cfg.CompactorConfig.RetentionEnabled {
@@ -1240,7 +1240,7 @@ func (t *Loki) initIndexGatewayRing() (_ services.Service, err error) {
 	t.Server.HTTP.Path("/indexgateway/ring").Methods("GET", "POST").Handler(t.indexGatewayRingManager)
 
 	if t.Cfg.InternalServer.Enable {
-		t.InternalServer.HTTP.Path("/indexgateway/ring").Methods("GET").Handler(t.indexGatewayRingManager)
+		t.InternalServer.HTTP.Path("/indexgateway/ring").Methods("GET", "POST").Handler(t.indexGatewayRingManager)
 	}
 
 	return t.indexGatewayRingManager, nil
@@ -1291,7 +1291,7 @@ func (t *Loki) initQuerySchedulerRing() (_ services.Service, err error) {
 	t.Server.HTTP.Path("/scheduler/ring").Methods("GET", "POST").Handler(t.querySchedulerRingManager)
 
 	if t.Cfg.InternalServer.Enable {
-		t.InternalServer.HTTP.Path("/scheduler/ring").Methods("GET").Handler(t.querySchedulerRingManager)
+		t.InternalServer.HTTP.Path("/scheduler/ring").Methods("GET", "POST").Handler(t.querySchedulerRingManager)
 	}
 
 	return t.querySchedulerRingManager, nil