Enhance apiextensions-apiserver in standalone mode

Author: bjrara

staging/src/k8s.io/apiextensions-apiserver/artifacts/simple-image/Dockerfile

@@ -0,0 +1,17 @@
+# Copyright 2020 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FROM gcr.io/distroless/base:latest
+ADD apiextensions-apiserver /
+ENTRYPOINT ["/apiextensions-apiserver"]

staging/src/k8s.io/apiextensions-apiserver/hack/build-image.sh

@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+
+# Copyright 2014 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+KUBE_ROOT=$(dirname "${BASH_SOURCE[0]}")/../../../../..
+source "${KUBE_ROOT}/hack/lib/util.sh"
+
+# Register function to be called on EXIT to remove generated binary.
+function cleanup {
+  rm "${KUBE_ROOT}/vendor/k8s.io/apiextensions-apiserver/artifacts/simple-image/apiextensions-apiserver"
+}
+trap cleanup EXIT
+
+pushd "${KUBE_ROOT}/vendor/k8s.io/apiextensions-apiserver"
+cp -v ../../../../_output/local/bin/linux/amd64/apiextensions-apiserver ./artifacts/simple-image/apiextensions-apiserver
+docker build -t apiextensions-apiserver:latest ./artifacts/simple-image
+popd

staging/src/k8s.io/apiextensions-apiserver/pkg/cmd/server/options/options.go

@@ -31,6 +31,7 @@ import (
 	utilerrors "k8s.io/apimachinery/pkg/util/errors"
 	genericregistry "k8s.io/apiserver/pkg/registry/generic"
 	genericapiserver "k8s.io/apiserver/pkg/server"
+	"k8s.io/apiserver/pkg/server/options"
 	genericoptions "k8s.io/apiserver/pkg/server/options"
 	"k8s.io/apiserver/pkg/util/proxy"
 	"k8s.io/apiserver/pkg/util/webhook"
@@ -41,6 +42,7 @@ const defaultEtcdPathPrefix = "/registry/apiextensions.kubernetes.io"
 
 // CustomResourceDefinitionsServerOptions describes the runtime options of an apiextensions-apiserver.
 type CustomResourceDefinitionsServerOptions struct {
+	ServerRunOptions   *options.ServerRunOptions
 	RecommendedOptions *genericoptions.RecommendedOptions
 	APIEnablement      *genericoptions.APIEnablementOptions
 
@@ -51,6 +53,7 @@ type CustomResourceDefinitionsServerOptions struct {
 // NewCustomResourceDefinitionsServerOptions creates default options of an apiextensions-apiserver.
 func NewCustomResourceDefinitionsServerOptions(out, errOut io.Writer) *CustomResourceDefinitionsServerOptions {
 	o := &CustomResourceDefinitionsServerOptions{
+		ServerRunOptions: options.NewServerRunOptions(),
 		RecommendedOptions: genericoptions.NewRecommendedOptions(
 			defaultEtcdPathPrefix,
 			apiserver.Codecs.LegacyCodec(v1beta1.SchemeGroupVersion, v1.SchemeGroupVersion),
@@ -66,13 +69,15 @@ func NewCustomResourceDefinitionsServerOptions(out, errOut io.Writer) *CustomRes
 
 // AddFlags adds the apiextensions-apiserver flags to the flagset.
 func (o CustomResourceDefinitionsServerOptions) AddFlags(fs *pflag.FlagSet) {
+	o.ServerRunOptions.AddUniversalFlags(fs)
 	o.RecommendedOptions.AddFlags(fs)
 	o.APIEnablement.AddFlags(fs)
 }
 
 // Validate validates the apiextensions-apiserver options.
 func (o CustomResourceDefinitionsServerOptions) Validate() error {
 	errors := []error{}
+	errors = append(errors, o.ServerRunOptions.Validate()...)
 	errors = append(errors, o.RecommendedOptions.Validate()...)
 	errors = append(errors, o.APIEnablement.Validate(apiserver.Scheme)...)
 	return utilerrors.NewAggregate(errors)
@@ -91,6 +96,9 @@ func (o CustomResourceDefinitionsServerOptions) Config() (*apiserver.Config, err
 	}
 
 	serverConfig := genericapiserver.NewRecommendedConfig(apiserver.Codecs)
+	if err := o.ServerRunOptions.ApplyTo(&serverConfig.Config); err != nil {
+		return nil, err
+	}
 	if err := o.RecommendedOptions.ApplyTo(serverConfig); err != nil {
 		return nil, err
 	}