diff --git a/cert/kube_certs.go b/cert/kube_certs.go
index 4d3330a66..000be4de5 100644
--- a/cert/kube_certs.go
+++ b/cert/kube_certs.go
@@ -169,6 +169,8 @@ func NewSealosCertMetaData(certPATH, certEtcdPATH string, apiServerIPAndDomains
 	data.CertPath = certPATH
 	data.CertEtcdPath = certEtcdPATH
 	data.DNSDomain = DNSDomain
+	data.APIServer.IPs = make(map[string]net.IP)
+	data.APIServer.DNSNames = make(map[string]string)
 	svcFirstIP, _, err := net.ParseCIDR(SvcCIDR)
 	if err != nil {
 		return nil, err
diff --git a/cert/kube_certs_test.go b/cert/kube_certs_test.go
index ee19ea280..435618646 100644
--- a/cert/kube_certs_test.go
+++ b/cert/kube_certs_test.go
@@ -16,7 +16,7 @@ func TestGenerateAll(t *testing.T) {
 			false,
 		},
 	}
-	certMeta, err := NewSealosCertMetaData(BasePath, EtcdBasePath, []string{"test.com", "192.168.1.2", "kubernetes.default.svc.sealyun"}, "10.64.0.0/10", "master1", "172.27.139.11")
+	certMeta, err := NewSealosCertMetaData(BasePath, EtcdBasePath, []string{"test.com", "192.168.1.2", "kubernetes.default.svc.sealyun"}, "10.64.0.0/10", "master1", "172.27.139.11", "cluster.local")
 	if err != nil {
 		t.Error(err)
 	}