diff --git a/artifacts/agent/karmada-agent.yaml b/artifacts/agent/karmada-agent.yaml
index 963c45bfa..a4c55f6c0 100644
--- a/artifacts/agent/karmada-agent.yaml
+++ b/artifacts/agent/karmada-agent.yaml
@@ -6,7 +6,7 @@ metadata:
   labels:
     app: karmada-agent
 spec:
-  replicas: 1
+  replicas: 2
   selector:
     matchLabels:
       app: karmada-agent
diff --git a/artifacts/deploy/controller-manager.yaml b/artifacts/deploy/controller-manager.yaml
index ba9f6122a..c373e177c 100644
--- a/artifacts/deploy/controller-manager.yaml
+++ b/artifacts/deploy/controller-manager.yaml
@@ -6,7 +6,7 @@ metadata:
   labels:
     app: karmada-controller-manager
 spec:
-  replicas: 1
+  replicas: 2
   selector:
     matchLabels:
       app: karmada-controller-manager
diff --git a/artifacts/deploy/karmada-aggregated-apiserver.yaml b/artifacts/deploy/karmada-aggregated-apiserver.yaml
index 1da0a864b..71741d077 100644
--- a/artifacts/deploy/karmada-aggregated-apiserver.yaml
+++ b/artifacts/deploy/karmada-aggregated-apiserver.yaml
@@ -12,7 +12,7 @@ spec:
     matchLabels:
       app: karmada-aggregated-apiserver
       apiserver: "true"
-  replicas: 1
+  replicas: 2
   template:
     metadata:
       labels:
diff --git a/artifacts/deploy/karmada-scheduler-estimator.yaml b/artifacts/deploy/karmada-scheduler-estimator.yaml
index 88d7e2783..979b3df24 100644
--- a/artifacts/deploy/karmada-scheduler-estimator.yaml
+++ b/artifacts/deploy/karmada-scheduler-estimator.yaml
@@ -6,7 +6,7 @@ metadata:
   labels:
     cluster: {{member_cluster_name}}
 spec:
-  replicas: 1
+  replicas: 2
   selector:
     matchLabels:
       app: karmada-scheduler-estimator-{{member_cluster_name}}
diff --git a/artifacts/deploy/karmada-scheduler.yaml b/artifacts/deploy/karmada-scheduler.yaml
index 3f1e9fda2..7eecc4b82 100644
--- a/artifacts/deploy/karmada-scheduler.yaml
+++ b/artifacts/deploy/karmada-scheduler.yaml
@@ -6,7 +6,7 @@ metadata:
   labels:
     app: karmada-scheduler
 spec:
-  replicas: 1
+  replicas: 2
   selector:
     matchLabels:
       app: karmada-scheduler
diff --git a/artifacts/deploy/karmada-webhook.yaml b/artifacts/deploy/karmada-webhook.yaml
index d615f16a9..3ed3ccb42 100644
--- a/artifacts/deploy/karmada-webhook.yaml
+++ b/artifacts/deploy/karmada-webhook.yaml
@@ -6,7 +6,7 @@ metadata:
   labels:
     app: karmada-webhook
 spec:
-  replicas: 1
+  replicas: 2
   selector:
     matchLabels:
       app: karmada-webhook