Delete etcd validation

cmd/kube-apiserver/app/server.go

@@ -40,7 +40,6 @@ import (
 	"k8s.io/apiserver/pkg/server/filters"
 	serveroptions "k8s.io/apiserver/pkg/server/options"
 	serverstorage "k8s.io/apiserver/pkg/server/storage"
-	"k8s.io/apiserver/pkg/storage/etcd3/preflight"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	apiserverflag "k8s.io/apiserver/pkg/util/flag"
 	"k8s.io/apiserver/pkg/util/webhook"
@@ -201,13 +200,6 @@ func CreateKubeAPIServerConfig(
 		return
 	}
 
-	if _, port, err := net.SplitHostPort(s.Etcd.StorageConfig.ServerList[0]); err == nil && port != "0" && len(port) != 0 {
-		if err := utilwait.PollImmediate(etcdRetryInterval, etcdRetryLimit*etcdRetryInterval, preflight.EtcdConnection{ServerList: s.Etcd.StorageConfig.ServerList}.CheckEtcdServers); err != nil {
-			lastErr = fmt.Errorf("error waiting for etcd connection: %v", err)
-			return
-		}
-	}
-
 	capabilities.Initialize(capabilities.Capabilities{
 		AllowPrivileged: s.AllowPrivileged,
 		// TODO(vmarmol): Implement support for HostNetworkSources.

staging/src/k8s.io/apiserver/pkg/server/options/etcd.go

@@ -78,35 +78,7 @@ func NewEtcdOptions(backendConfig *storagebackend.Config) *EtcdOptions {
 }
 
 func (s *EtcdOptions) Validate() []error {
-	if s == nil {
-		return nil
-	}
-
-	allErrors := []error{}
-	if len(s.StorageConfig.ServerList) == 0 {
-		allErrors = append(allErrors, fmt.Errorf("--etcd-servers must be specified"))
-	}
-
-	if !storageTypes.Has(s.StorageConfig.Type) {
-		allErrors = append(allErrors, fmt.Errorf("--storage-backend invalid, must be 'etcd3' or 'etcd2'. If not specified, it will default to 'etcd3'"))
-	}
-
-	for _, override := range s.EtcdServersOverrides {
-		tokens := strings.Split(override, "#")
-		if len(tokens) != 2 {
-			allErrors = append(allErrors, fmt.Errorf("--etcd-servers-overrides invalid, must be of format: group/resource#servers, where servers are URLs, semicolon separated"))
-			continue
-		}
-
-		apiresource := strings.Split(tokens[0], "/")
-		if len(apiresource) != 2 {
-			allErrors = append(allErrors, fmt.Errorf("--etcd-servers-overrides invalid, must be of format: group/resource#servers, where servers are URLs, semicolon separated"))
-			continue
-		}
-
-	}
-
-	return allErrors
+	return nil
 }
 
 // AddEtcdFlags adds flags related to etcd storage for a specific APIServer to the specified FlagSet