diff --git a/pkg/mcs/scheduling/server/config/watcher.go b/pkg/mcs/scheduling/server/config/watcher.go
index b413e243c2b..be5e6bbafd2 100644
--- a/pkg/mcs/scheduling/server/config/watcher.go
+++ b/pkg/mcs/scheduling/server/config/watcher.go
@@ -119,6 +119,7 @@ func (cw *Watcher) initializeConfigWatcher() error {
 				zap.String("event-kv-key", string(kv.Key)), zap.Error(err))
 			return err
 		}
+		log.Info("update scheduling config", zap.Reflect("new", cfg))
 		cw.AdjustScheduleCfg(&cfg.Schedule)
 		cw.SetClusterVersion(&cfg.ClusterVersion)
 		cw.SetScheduleConfig(&cfg.Schedule)
@@ -146,6 +147,7 @@ func (cw *Watcher) initializeSchedulerConfigWatcher() error {
 	prefixToTrim := cw.schedulerConfigPathPrefix + "/"
 	putFn := func(kv *mvccpb.KeyValue) error {
 		name := strings.TrimPrefix(string(kv.Key), prefixToTrim)
+		log.Info("update scheduler config", zap.Reflect("name", string(kv.Value)))
 		err := cw.storage.SaveSchedulerConfig(name, kv.Value)
 		if err != nil {
 			log.Warn("failed to save scheduler config",
@@ -161,6 +163,7 @@ func (cw *Watcher) initializeSchedulerConfigWatcher() error {
 		return nil
 	}
 	deleteFn := func(kv *mvccpb.KeyValue) error {
+		log.Info("remove scheduler config", zap.Reflect("key", string(kv.Key)))
 		return cw.storage.RemoveSchedulerConfig(
 			strings.TrimPrefix(string(kv.Key), prefixToTrim),
 		)
diff --git a/pkg/mcs/scheduling/server/rule/watcher.go b/pkg/mcs/scheduling/server/rule/watcher.go
index cf0e1cd8ba1..dc5735eb540 100644
--- a/pkg/mcs/scheduling/server/rule/watcher.go
+++ b/pkg/mcs/scheduling/server/rule/watcher.go
@@ -19,10 +19,12 @@ import (
 	"strings"
 	"sync"
 
+	"github.com/pingcap/log"
 	"github.com/tikv/pd/pkg/storage/endpoint"
 	"github.com/tikv/pd/pkg/utils/etcdutil"
 	"go.etcd.io/etcd/clientv3"
 	"go.etcd.io/etcd/mvcc/mvccpb"
+	"go.uber.org/zap"
 )
 
 // ruleStorage is an in-memory storage for Placement Rules,
@@ -163,12 +165,14 @@ func (rw *Watcher) initializeRuleWatcher() error {
 	putFn := func(kv *mvccpb.KeyValue) error {
 		// Since the PD API server will validate the rule before saving it to etcd,
 		// so we could directly save the string rule in JSON to the storage here.
+		log.Info("update placement rule", zap.String("key", string(kv.Key)), zap.String("value", string(kv.Value)))
 		return rw.ruleStore.SaveRule(
 			strings.TrimPrefix(string(kv.Key), prefixToTrim),
 			string(kv.Value),
 		)
 	}
 	deleteFn := func(kv *mvccpb.KeyValue) error {
+		log.Info("delete placement rule", zap.String("key", string(kv.Key)))
 		return rw.ruleStore.DeleteRule(strings.TrimPrefix(string(kv.Key), prefixToTrim))
 	}
 	postEventFn := func() error {
@@ -188,12 +192,14 @@ func (rw *Watcher) initializeRuleWatcher() error {
 func (rw *Watcher) initializeGroupWatcher() error {
 	prefixToTrim := rw.ruleGroupPathPrefix + "/"
 	putFn := func(kv *mvccpb.KeyValue) error {
+		log.Info("update placement rule group", zap.String("key", string(kv.Key)), zap.String("value", string(kv.Value)))
 		return rw.ruleStore.SaveRuleGroup(
 			strings.TrimPrefix(string(kv.Key), prefixToTrim),
 			string(kv.Value),
 		)
 	}
 	deleteFn := func(kv *mvccpb.KeyValue) error {
+		log.Info("delete placement rule group", zap.String("key", string(kv.Key)))
 		return rw.ruleStore.DeleteRuleGroup(strings.TrimPrefix(string(kv.Key), prefixToTrim))
 	}
 	postEventFn := func() error {
@@ -213,12 +219,14 @@ func (rw *Watcher) initializeGroupWatcher() error {
 func (rw *Watcher) initializeRegionLabelWatcher() error {
 	prefixToTrim := rw.regionLabelPathPrefix + "/"
 	putFn := func(kv *mvccpb.KeyValue) error {
+		log.Info("update region label rule", zap.String("key", string(kv.Key)), zap.String("value", string(kv.Value)))
 		return rw.ruleStore.SaveRegionRule(
 			strings.TrimPrefix(string(kv.Key), prefixToTrim),
 			string(kv.Value),
 		)
 	}
 	deleteFn := func(kv *mvccpb.KeyValue) error {
+		log.Info("delete region label rule", zap.String("key", string(kv.Key)))
 		return rw.ruleStore.DeleteRegionRule(strings.TrimPrefix(string(kv.Key), prefixToTrim))
 	}
 	postEventFn := func() error {
diff --git a/server/cluster/cluster.go b/server/cluster/cluster.go
index 30ab50f0c9f..54085ef533b 100644
--- a/server/cluster/cluster.go
+++ b/server/cluster/cluster.go
@@ -427,8 +427,8 @@ func (c *RaftCluster) runStoreConfigSync() {
 	defer c.wg.Done()
 
 	var (
-		synced, switchRaftV2Config bool
-		stores                     = c.GetStores()
+		synced, switchRaftV2Config, isLastSynced bool
+		stores                                   = c.GetStores()
 	)
 	// Start the ticker with a second-level timer to accelerate
 	// the bootstrap stage.
@@ -441,11 +441,14 @@ func (c *RaftCluster) runStoreConfigSync() {
 				log.Warn("store config persisted failed", zap.Error(err))
 			}
 		}
+		isLastSynced = synced
 		// Update the stores if the synchronization is not completed.
 		if !synced {
 			stores = c.GetStores()
-		} else if err := c.opt.Persist(c.storage); err != nil {
-			log.Warn("store config persisted failed", zap.Error(err))
+		} else if !isLastSynced && synced {
+			if err := c.opt.Persist(c.storage); err != nil {
+				log.Warn("store config persisted failed", zap.Error(err))
+			}
 		}
 		select {
 		case <-c.ctx.Done():