mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
synced 2025-12-10 01:55:35 +00:00
121 lines
3.1 KiB
Go
121 lines
3.1 KiB
Go
/*
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Copyright 2015 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package kubemark
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import (
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"fmt"
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"net"
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"time"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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v1core "k8s.io/client-go/kubernetes/typed/core/v1"
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clientv1 "k8s.io/client-go/pkg/api/v1"
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"k8s.io/client-go/tools/record"
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proxyapp "k8s.io/kubernetes/cmd/kube-proxy/app"
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clientset "k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
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"k8s.io/kubernetes/pkg/proxy/iptables"
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"k8s.io/kubernetes/pkg/util"
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utilexec "k8s.io/kubernetes/pkg/util/exec"
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utiliptables "k8s.io/kubernetes/pkg/util/iptables"
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nodeutil "k8s.io/kubernetes/pkg/util/node"
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utilsysctl "k8s.io/kubernetes/pkg/util/sysctl"
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"github.com/golang/glog"
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)
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type HollowProxy struct {
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ProxyServer *proxyapp.ProxyServer
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}
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func NewHollowProxyOrDie(
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nodeName string,
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client clientset.Interface,
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eventClient v1core.EventsGetter,
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iptInterface utiliptables.Interface,
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sysctl utilsysctl.Interface,
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execer utilexec.Interface,
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broadcaster record.EventBroadcaster,
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recorder record.EventRecorder,
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) (*HollowProxy, error) {
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// Create a proxier with fake iptables underneath it.
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proxier, err := iptables.NewProxier(
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iptInterface,
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sysctl,
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execer,
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30*time.Second,
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5*time.Second,
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false,
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0,
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"10.0.0.0/8",
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nodeName,
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getNodeIP(client, nodeName),
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recorder,
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nil,
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)
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if err != nil {
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return nil, fmt.Errorf("unable to create proxier: %v", err)
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}
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// Create and start Hollow Proxy
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nodeRef := &clientv1.ObjectReference{
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Kind: "Node",
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Name: nodeName,
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UID: types.UID(nodeName),
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Namespace: "",
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}
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return &HollowProxy{
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ProxyServer: &proxyapp.ProxyServer{
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Client: client,
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EventClient: eventClient,
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IptInterface: iptInterface,
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Proxier: proxier,
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Broadcaster: broadcaster,
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Recorder: recorder,
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ProxyMode: "fake",
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NodeRef: nodeRef,
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OOMScoreAdj: util.Int32Ptr(0),
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ResourceContainer: "",
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ConfigSyncPeriod: 30 * time.Second,
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ServiceEventHandler: proxier,
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EndpointsEventHandler: proxier,
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},
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}, nil
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}
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func (hp *HollowProxy) Run() {
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if err := hp.ProxyServer.Run(); err != nil {
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glog.Fatalf("Error while running proxy: %v\n", err)
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}
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}
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func getNodeIP(client clientset.Interface, hostname string) net.IP {
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var nodeIP net.IP
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node, err := client.Core().Nodes().Get(hostname, metav1.GetOptions{})
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if err != nil {
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glog.Warningf("Failed to retrieve node info: %v", err)
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return nil
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}
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nodeIP, err = nodeutil.InternalGetNodeHostIP(node)
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if err != nil {
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glog.Warningf("Failed to retrieve node IP: %v", err)
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return nil
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}
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return nodeIP
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}
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