diff --git a/server/config.go b/server/config.go
index 3bcc542c9dd..d478476fc69 100644
--- a/server/config.go
+++ b/server/config.go
@@ -48,8 +48,9 @@ type Config struct {
 	AdvertiseClientUrls string `toml:"advertise-client-urls" json:"advertise-client-urls"`
 	AdvertisePeerUrls   string `toml:"advertise-peer-urls" json:"advertise-peer-urls"`
 
-	Name    string `toml:"name" json:"name"`
-	DataDir string `toml:"data-dir" json:"data-dir"`
+	Name            string `toml:"name" json:"name"`
+	DataDir         string `toml:"data-dir" json:"data-dir"`
+	ForceNewCluster bool   `json:"force-new-cluster"`
 
 	InitialCluster      string `toml:"initial-cluster" json:"initial-cluster"`
 	InitialClusterState string `toml:"initial-cluster-state" json:"initial-cluster-state"`
@@ -163,6 +164,7 @@ func NewConfig() *Config {
 	fs.StringVar(&cfg.Security.CAPath, "cacert", "", "Path of file that contains list of trusted TLS CAs")
 	fs.StringVar(&cfg.Security.CertPath, "cert", "", "Path of file that contains X509 certificate in PEM format")
 	fs.StringVar(&cfg.Security.KeyPath, "key", "", "Path of file that contains X509 key in PEM format")
+	fs.BoolVar(&cfg.ForceNewCluster, "force-new-cluster", false, "Force to create a new one-member cluster")
 
 	cfg.Namespace = make(map[string]NamespaceConfig)
 
@@ -832,6 +834,7 @@ func (c *Config) genEmbedEtcdConfig() (*embed.Config, error) {
 	cfg.PeerTLSInfo.TrustedCAFile = c.Security.CAPath
 	cfg.PeerTLSInfo.CertFile = c.Security.CertPath
 	cfg.PeerTLSInfo.KeyFile = c.Security.KeyPath
+	cfg.ForceNewCluster = c.ForceNewCluster
 	cfg.ZapLoggerBuilder = embed.NewZapCoreLoggerBuilder(c.logger, c.logger.Core(), c.logProps.Syncer)
 	cfg.Logger = "zap"
 	var err error