propagate proxy env var to kube-proxy

Signed-off-by: Yassine TIJANI <ytijani@vmware.com>

cmd/kubeadm/app/phases/addons/proxy/proxy.go

@@ -22,7 +22,7 @@ import (
 
 	"github.com/pkg/errors"
 	apps "k8s.io/api/apps/v1"
-	"k8s.io/api/core/v1"
+	v1 "k8s.io/api/core/v1"
 	rbac "k8s.io/api/rbac/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	kuberuntime "k8s.io/apimachinery/pkg/runtime"
@@ -129,6 +129,8 @@ func createKubeProxyAddon(configMapBytes, daemonSetbytes []byte, client clientse
 	if err := kuberuntime.DecodeInto(clientsetscheme.Codecs.UniversalDecoder(), daemonSetbytes, kubeproxyDaemonSet); err != nil {
 		return errors.Wrap(err, "unable to decode kube-proxy daemonset")
 	}
+	// propagate http/https proxy env vars
+	kubeproxyDaemonSet.Spec.Template.Spec.Containers[0].Env = kubeadmutil.GetProxyEnvVars()
 
 	// Create the DaemonSet for kube-proxy or update it in case it already exists
 	return apiclient.CreateOrUpdateDaemonSet(client, kubeproxyDaemonSet)

cmd/kubeadm/app/phases/controlplane/manifests.go

@@ -19,7 +19,6 @@ package controlplane
 import (
 	"fmt"
 	"net"
-	"os"
 	"path/filepath"
 	"strconv"
 	"strings"
@@ -59,7 +58,7 @@ func GetStaticPodSpecs(cfg *kubeadmapi.ClusterConfiguration, endpoint *kubeadmap
 			VolumeMounts:    staticpodutil.VolumeMountMapToSlice(mounts.GetVolumeMounts(kubeadmconstants.KubeAPIServer)),
 			LivenessProbe:   staticpodutil.LivenessProbe(staticpodutil.GetAPIServerProbeAddress(endpoint), "/healthz", int(endpoint.BindPort), v1.URISchemeHTTPS),
 			Resources:       staticpodutil.ComponentResources("250m"),
-			Env:             getProxyEnvVars(),
+			Env:             kubeadmutil.GetProxyEnvVars(),
 		}, mounts.GetVolumes(kubeadmconstants.KubeAPIServer)),
 		kubeadmconstants.KubeControllerManager: staticpodutil.ComponentPod(v1.Container{
 			Name:            kubeadmconstants.KubeControllerManager,
@@ -69,7 +68,7 @@ func GetStaticPodSpecs(cfg *kubeadmapi.ClusterConfiguration, endpoint *kubeadmap
 			VolumeMounts:    staticpodutil.VolumeMountMapToSlice(mounts.GetVolumeMounts(kubeadmconstants.KubeControllerManager)),
 			LivenessProbe:   staticpodutil.LivenessProbe(staticpodutil.GetControllerManagerProbeAddress(cfg), "/healthz", kubeadmconstants.InsecureKubeControllerManagerPort, v1.URISchemeHTTP),
 			Resources:       staticpodutil.ComponentResources("200m"),
-			Env:             getProxyEnvVars(),
+			Env:             kubeadmutil.GetProxyEnvVars(),
 		}, mounts.GetVolumes(kubeadmconstants.KubeControllerManager)),
 		kubeadmconstants.KubeScheduler: staticpodutil.ComponentPod(v1.Container{
 			Name:            kubeadmconstants.KubeScheduler,
@@ -79,7 +78,7 @@ func GetStaticPodSpecs(cfg *kubeadmapi.ClusterConfiguration, endpoint *kubeadmap
 			VolumeMounts:    staticpodutil.VolumeMountMapToSlice(mounts.GetVolumeMounts(kubeadmconstants.KubeScheduler)),
 			LivenessProbe:   staticpodutil.LivenessProbe(staticpodutil.GetSchedulerProbeAddress(cfg), "/healthz", kubeadmconstants.InsecureSchedulerPort, v1.URISchemeHTTP),
 			Resources:       staticpodutil.ComponentResources("100m"),
-			Env:             getProxyEnvVars(),
+			Env:             kubeadmutil.GetProxyEnvVars(),
 		}, mounts.GetVolumes(kubeadmconstants.KubeScheduler)),
 	}
 	return staticPodSpecs
@@ -359,22 +358,3 @@ func getSchedulerCommand(cfg *kubeadmapi.ClusterConfiguration) []string {
 	command = append(command, kubeadmutil.BuildArgumentListFromMap(defaultArguments, cfg.Scheduler.ExtraArgs)...)
 	return command
 }
-
-// getProxyEnvVars builds a list of environment variables to use in the control plane containers in order to use the right proxy
-func getProxyEnvVars() []v1.EnvVar {
-	envs := []v1.EnvVar{}
-	for _, env := range os.Environ() {
-		pos := strings.Index(env, "=")
-		if pos == -1 {
-			// malformed environment variable, skip it.
-			continue
-		}
-		name := env[:pos]
-		value := env[pos+1:]
-		if strings.HasSuffix(strings.ToLower(name), "_proxy") && value != "" {
-			envVar := v1.EnvVar{Name: name, Value: value}
-			envs = append(envs, envVar)
-		}
-	}
-	return envs
-}

cmd/kubeadm/app/util/BUILD

@@ -9,6 +9,7 @@ go_library(
         "chroot_windows.go",
         "copy.go",
         "endpoint.go",
+        "env.go",
         "error.go",
         "marshal.go",
         "net.go",
@@ -20,6 +21,7 @@ go_library(
     deps = [
         "//cmd/kubeadm/app/apis/kubeadm:go_default_library",
         "//cmd/kubeadm/app/constants:go_default_library",
+        "//staging/src/k8s.io/api/core/v1:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/runtime:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/runtime/schema:go_default_library",
         "//staging/src/k8s.io/apimachinery/pkg/runtime/serializer:go_default_library",

cmd/kubeadm/app/util/env.go

@@ -0,0 +1,43 @@
+/*
+Copyright 2019 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.
+*/
+
+package util
+
+import (
+	"os"
+	"strings"
+
+	v1 "k8s.io/api/core/v1"
+)
+
+// GetProxyEnvVars builds a list of environment variables in order to use the right proxy
+func GetProxyEnvVars() []v1.EnvVar {
+	envs := []v1.EnvVar{}
+	for _, env := range os.Environ() {
+		pos := strings.Index(env, "=")
+		if pos == -1 {
+			// malformed environment variable, skip it.
+			continue
+		}
+		name := env[:pos]
+		value := env[pos+1:]
+		if strings.HasSuffix(strings.ToLower(name), "_proxy") && value != "" {
+			envVar := v1.EnvVar{Name: name, Value: value}
+			envs = append(envs, envVar)
+		}
+	}
+	return envs
+}