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master.go
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master.go
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/*
Copyright 2014 The Kubernetes Authors All rights reserved.
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 master
import (
"fmt"
"io"
"net"
"net/http"
"net/url"
"strconv"
"strings"
"sync"
"time"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/meta"
"k8s.io/kubernetes/pkg/api/rest"
"k8s.io/kubernetes/pkg/api/unversioned"
apiv1 "k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/apimachinery/registered"
"k8s.io/kubernetes/pkg/apis/apps"
appsapi "k8s.io/kubernetes/pkg/apis/apps/v1alpha1"
"k8s.io/kubernetes/pkg/apis/autoscaling"
autoscalingapiv1 "k8s.io/kubernetes/pkg/apis/autoscaling/v1"
"k8s.io/kubernetes/pkg/apis/batch"
batchapiv1 "k8s.io/kubernetes/pkg/apis/batch/v1"
batchapiv2alpha1 "k8s.io/kubernetes/pkg/apis/batch/v2alpha1"
"k8s.io/kubernetes/pkg/apis/extensions"
extensionsapiv1beta1 "k8s.io/kubernetes/pkg/apis/extensions/v1beta1"
"k8s.io/kubernetes/pkg/apis/policy"
policyapiv1alpha1 "k8s.io/kubernetes/pkg/apis/policy/v1alpha1"
"k8s.io/kubernetes/pkg/apis/rbac"
rbacapi "k8s.io/kubernetes/pkg/apis/rbac/v1alpha1"
rbacvalidation "k8s.io/kubernetes/pkg/apis/rbac/validation"
"k8s.io/kubernetes/pkg/apiserver"
apiservermetrics "k8s.io/kubernetes/pkg/apiserver/metrics"
"k8s.io/kubernetes/pkg/genericapiserver"
"k8s.io/kubernetes/pkg/healthz"
kubeletclient "k8s.io/kubernetes/pkg/kubelet/client"
"k8s.io/kubernetes/pkg/master/ports"
"k8s.io/kubernetes/pkg/registry/clusterrole"
clusterroleetcd "k8s.io/kubernetes/pkg/registry/clusterrole/etcd"
clusterrolepolicybased "k8s.io/kubernetes/pkg/registry/clusterrole/policybased"
"k8s.io/kubernetes/pkg/registry/clusterrolebinding"
clusterrolebindingetcd "k8s.io/kubernetes/pkg/registry/clusterrolebinding/etcd"
clusterrolebindingpolicybased "k8s.io/kubernetes/pkg/registry/clusterrolebinding/policybased"
"k8s.io/kubernetes/pkg/registry/componentstatus"
configmapetcd "k8s.io/kubernetes/pkg/registry/configmap/etcd"
controlleretcd "k8s.io/kubernetes/pkg/registry/controller/etcd"
deploymentetcd "k8s.io/kubernetes/pkg/registry/deployment/etcd"
"k8s.io/kubernetes/pkg/registry/endpoint"
endpointsetcd "k8s.io/kubernetes/pkg/registry/endpoint/etcd"
eventetcd "k8s.io/kubernetes/pkg/registry/event/etcd"
expcontrolleretcd "k8s.io/kubernetes/pkg/registry/experimental/controller/etcd"
"k8s.io/kubernetes/pkg/registry/generic"
ingressetcd "k8s.io/kubernetes/pkg/registry/ingress/etcd"
jobetcd "k8s.io/kubernetes/pkg/registry/job/etcd"
limitrangeetcd "k8s.io/kubernetes/pkg/registry/limitrange/etcd"
"k8s.io/kubernetes/pkg/registry/namespace"
namespaceetcd "k8s.io/kubernetes/pkg/registry/namespace/etcd"
networkpolicyetcd "k8s.io/kubernetes/pkg/registry/networkpolicy/etcd"
"k8s.io/kubernetes/pkg/registry/node"
nodeetcd "k8s.io/kubernetes/pkg/registry/node/etcd"
pvetcd "k8s.io/kubernetes/pkg/registry/persistentvolume/etcd"
pvcetcd "k8s.io/kubernetes/pkg/registry/persistentvolumeclaim/etcd"
petsetetcd "k8s.io/kubernetes/pkg/registry/petset/etcd"
podetcd "k8s.io/kubernetes/pkg/registry/pod/etcd"
poddisruptionbudgetetcd "k8s.io/kubernetes/pkg/registry/poddisruptionbudget/etcd"
pspetcd "k8s.io/kubernetes/pkg/registry/podsecuritypolicy/etcd"
podtemplateetcd "k8s.io/kubernetes/pkg/registry/podtemplate/etcd"
replicasetetcd "k8s.io/kubernetes/pkg/registry/replicaset/etcd"
resourcequotaetcd "k8s.io/kubernetes/pkg/registry/resourcequota/etcd"
"k8s.io/kubernetes/pkg/registry/role"
roleetcd "k8s.io/kubernetes/pkg/registry/role/etcd"
rolepolicybased "k8s.io/kubernetes/pkg/registry/role/policybased"
"k8s.io/kubernetes/pkg/registry/rolebinding"
rolebindingetcd "k8s.io/kubernetes/pkg/registry/rolebinding/etcd"
rolebindingpolicybased "k8s.io/kubernetes/pkg/registry/rolebinding/policybased"
secretetcd "k8s.io/kubernetes/pkg/registry/secret/etcd"
"k8s.io/kubernetes/pkg/registry/service"
etcdallocator "k8s.io/kubernetes/pkg/registry/service/allocator/etcd"
serviceetcd "k8s.io/kubernetes/pkg/registry/service/etcd"
ipallocator "k8s.io/kubernetes/pkg/registry/service/ipallocator"
serviceaccountetcd "k8s.io/kubernetes/pkg/registry/serviceaccount/etcd"
thirdpartyresourceetcd "k8s.io/kubernetes/pkg/registry/thirdpartyresource/etcd"
"k8s.io/kubernetes/pkg/registry/thirdpartyresourcedata"
thirdpartyresourcedataetcd "k8s.io/kubernetes/pkg/registry/thirdpartyresourcedata/etcd"
"k8s.io/kubernetes/pkg/runtime"
"k8s.io/kubernetes/pkg/storage"
etcdmetrics "k8s.io/kubernetes/pkg/storage/etcd/metrics"
etcdutil "k8s.io/kubernetes/pkg/storage/etcd/util"
"k8s.io/kubernetes/pkg/util/wait"
daemonetcd "k8s.io/kubernetes/pkg/registry/daemonset/etcd"
horizontalpodautoscaleretcd "k8s.io/kubernetes/pkg/registry/horizontalpodautoscaler/etcd"
"github.com/golang/glog"
"github.com/prometheus/client_golang/prometheus"
"k8s.io/kubernetes/pkg/registry/service/allocator"
"k8s.io/kubernetes/pkg/registry/service/portallocator"
)
type Config struct {
*genericapiserver.Config
EnableCoreControllers bool
DeleteCollectionWorkers int
EventTTL time.Duration
KubeletClient kubeletclient.KubeletClient
// Used to start and monitor tunneling
Tunneler genericapiserver.Tunneler
disableThirdPartyControllerForTesting bool
}
// Master contains state for a Kubernetes cluster master/api server.
type Master struct {
*genericapiserver.GenericAPIServer
// Map of v1 resources to their REST storages.
v1ResourcesStorage map[string]rest.Storage
enableCoreControllers bool
deleteCollectionWorkers int
// registries are internal client APIs for accessing the storage layer
// TODO: define the internal typed interface in a way that clients can
// also be replaced
nodeRegistry node.Registry
namespaceRegistry namespace.Registry
serviceRegistry service.Registry
endpointRegistry endpoint.Registry
serviceClusterIPAllocator service.RangeRegistry
serviceNodePortAllocator service.RangeRegistry
// storage for third party objects
thirdPartyStorage storage.Interface
// map from api path to a tuple of (storage for the objects, APIGroup)
thirdPartyResources map[string]thirdPartyEntry
// protects the map
thirdPartyResourcesLock sync.RWMutex
// Useful for reliable testing. Shouldn't be used otherwise.
disableThirdPartyControllerForTesting bool
// Used to start and monitor tunneling
tunneler genericapiserver.Tunneler
}
// thirdPartyEntry combines objects storage and API group into one struct
// for easy lookup.
type thirdPartyEntry struct {
storage *thirdpartyresourcedataetcd.REST
group unversioned.APIGroup
}
// New returns a new instance of Master from the given config.
// Certain config fields will be set to a default value if unset.
// Certain config fields must be specified, including:
// KubeletClient
func New(c *Config) (*Master, error) {
if c.KubeletClient == nil {
return nil, fmt.Errorf("Master.New() called with config.KubeletClient == nil")
}
s, err := genericapiserver.New(c.Config)
if err != nil {
return nil, err
}
m := &Master{
GenericAPIServer: s,
enableCoreControllers: c.EnableCoreControllers,
deleteCollectionWorkers: c.DeleteCollectionWorkers,
tunneler: c.Tunneler,
disableThirdPartyControllerForTesting: c.disableThirdPartyControllerForTesting,
}
m.InstallAPIs(c)
// TODO: Attempt clean shutdown?
if m.enableCoreControllers {
m.NewBootstrapController().Start()
}
return m, nil
}
var defaultMetricsHandler = prometheus.Handler().ServeHTTP
// MetricsWithReset is a handler that resets metrics when DELETE is passed to the endpoint.
func MetricsWithReset(w http.ResponseWriter, req *http.Request) {
if req.Method == "DELETE" {
apiservermetrics.Reset()
etcdmetrics.Reset()
io.WriteString(w, "metrics reset\n")
return
}
defaultMetricsHandler(w, req)
}
func (m *Master) InstallAPIs(c *Config) {
apiGroupsInfo := []genericapiserver.APIGroupInfo{}
// Install v1 unless disabled.
if c.APIResourceConfigSource.AnyResourcesForVersionEnabled(apiv1.SchemeGroupVersion) {
// Install v1 API.
m.initV1ResourcesStorage(c)
apiGroupInfo := genericapiserver.APIGroupInfo{
GroupMeta: *registered.GroupOrDie(api.GroupName),
VersionedResourcesStorageMap: map[string]map[string]rest.Storage{
"v1": m.v1ResourcesStorage,
},
IsLegacyGroup: true,
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
}
if autoscalingGroupVersion := (unversioned.GroupVersion{Group: "autoscaling", Version: "v1"}); registered.IsEnabledVersion(autoscalingGroupVersion) {
apiGroupInfo.SubresourceGroupVersionKind = map[string]unversioned.GroupVersionKind{
"replicationcontrollers/scale": autoscalingGroupVersion.WithKind("Scale"),
}
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
}
// Run the tunneler.
healthzChecks := []healthz.HealthzChecker{}
if m.tunneler != nil {
m.tunneler.Run(m.getNodeAddresses)
healthzChecks = append(healthzChecks, healthz.NamedCheck("SSH Tunnel Check", m.IsTunnelSyncHealthy))
prometheus.NewGaugeFunc(prometheus.GaugeOpts{
Name: "apiserver_proxy_tunnel_sync_latency_secs",
Help: "The time since the last successful synchronization of the SSH tunnels for proxy requests.",
}, func() float64 { return float64(m.tunneler.SecondsSinceSync()) })
}
healthz.InstallHandler(m.MuxHelper, healthzChecks...)
if c.EnableProfiling {
m.MuxHelper.HandleFunc("/metrics", MetricsWithReset)
} else {
m.MuxHelper.HandleFunc("/metrics", defaultMetricsHandler)
}
// allGroups records all supported groups at /apis
allGroups := []unversioned.APIGroup{}
// Install extensions unless disabled.
if c.APIResourceConfigSource.AnyResourcesForVersionEnabled(extensionsapiv1beta1.SchemeGroupVersion) {
var err error
m.thirdPartyStorage, err = c.StorageFactory.New(extensions.Resource("thirdpartyresources"))
if err != nil {
glog.Fatalf("Error getting third party storage: %v", err)
}
m.thirdPartyResources = map[string]thirdPartyEntry{}
extensionResources := m.getExtensionResources(c)
extensionsGroupMeta := registered.GroupOrDie(extensions.GroupName)
apiGroupInfo := genericapiserver.APIGroupInfo{
GroupMeta: *extensionsGroupMeta,
VersionedResourcesStorageMap: map[string]map[string]rest.Storage{
"v1beta1": extensionResources,
},
OptionsExternalVersion: ®istered.GroupOrDie(api.GroupName).GroupVersion,
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
extensionsGVForDiscovery := unversioned.GroupVersionForDiscovery{
GroupVersion: extensionsGroupMeta.GroupVersion.String(),
Version: extensionsGroupMeta.GroupVersion.Version,
}
group := unversioned.APIGroup{
Name: extensionsGroupMeta.GroupVersion.Group,
Versions: []unversioned.GroupVersionForDiscovery{extensionsGVForDiscovery},
PreferredVersion: extensionsGVForDiscovery,
}
allGroups = append(allGroups, group)
}
// Install autoscaling unless disabled.
if c.APIResourceConfigSource.AnyResourcesForVersionEnabled(autoscalingapiv1.SchemeGroupVersion) {
autoscalingResources := m.getAutoscalingResources(c)
autoscalingGroupMeta := registered.GroupOrDie(autoscaling.GroupName)
// Hard code preferred group version to autoscaling/v1
autoscalingGroupMeta.GroupVersion = autoscalingapiv1.SchemeGroupVersion
apiGroupInfo := genericapiserver.APIGroupInfo{
GroupMeta: *autoscalingGroupMeta,
VersionedResourcesStorageMap: map[string]map[string]rest.Storage{
"v1": autoscalingResources,
},
OptionsExternalVersion: ®istered.GroupOrDie(api.GroupName).GroupVersion,
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
autoscalingGVForDiscovery := unversioned.GroupVersionForDiscovery{
GroupVersion: autoscalingGroupMeta.GroupVersion.String(),
Version: autoscalingGroupMeta.GroupVersion.Version,
}
group := unversioned.APIGroup{
Name: autoscalingGroupMeta.GroupVersion.Group,
Versions: []unversioned.GroupVersionForDiscovery{autoscalingGVForDiscovery},
PreferredVersion: autoscalingGVForDiscovery,
}
allGroups = append(allGroups, group)
}
// Install batch unless disabled.
if c.APIResourceConfigSource.AnyResourcesForVersionEnabled(batchapiv1.SchemeGroupVersion) ||
c.APIResourceConfigSource.AnyResourcesForVersionEnabled(batchapiv2alpha1.SchemeGroupVersion) {
batchv1Resources := m.getBatchResources(c, batchapiv1.SchemeGroupVersion)
batchGroupMeta := registered.GroupOrDie(batch.GroupName)
// Hard code preferred group version to batch/v1
batchGroupMeta.GroupVersion = batchapiv1.SchemeGroupVersion
apiGroupInfo := genericapiserver.APIGroupInfo{
GroupMeta: *batchGroupMeta,
VersionedResourcesStorageMap: map[string]map[string]rest.Storage{
"v1": batchv1Resources,
},
OptionsExternalVersion: ®istered.GroupOrDie(api.GroupName).GroupVersion,
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
}
if c.APIResourceConfigSource.AnyResourcesForVersionEnabled(batchapiv2alpha1.SchemeGroupVersion) {
batchv2alpha1Resources := m.getBatchResources(c, batchapiv2alpha1.SchemeGroupVersion)
apiGroupInfo.VersionedResourcesStorageMap["v2alpha1"] = batchv2alpha1Resources
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
batchGVForDiscovery := unversioned.GroupVersionForDiscovery{
GroupVersion: batchGroupMeta.GroupVersion.String(),
Version: batchGroupMeta.GroupVersion.Version,
}
group := unversioned.APIGroup{
Name: batchGroupMeta.GroupVersion.Group,
Versions: []unversioned.GroupVersionForDiscovery{batchGVForDiscovery},
PreferredVersion: batchGVForDiscovery,
}
allGroups = append(allGroups, group)
}
if c.APIResourceConfigSource.AnyResourcesForVersionEnabled(policyapiv1alpha1.SchemeGroupVersion) {
policyResources := m.getPolicyResources(c)
policyGroupMeta := registered.GroupOrDie(policy.GroupName)
// Hard code preferred group version to policy/v1alpha1
policyGroupMeta.GroupVersion = policyapiv1alpha1.SchemeGroupVersion
apiGroupInfo := genericapiserver.APIGroupInfo{
GroupMeta: *policyGroupMeta,
VersionedResourcesStorageMap: map[string]map[string]rest.Storage{
"v1alpha1": policyResources,
},
OptionsExternalVersion: ®istered.GroupOrDie(api.GroupName).GroupVersion,
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
policyGVForDiscovery := unversioned.GroupVersionForDiscovery{
GroupVersion: policyGroupMeta.GroupVersion.String(),
Version: policyGroupMeta.GroupVersion.Version,
}
group := unversioned.APIGroup{
Name: policyGroupMeta.GroupVersion.Group,
Versions: []unversioned.GroupVersionForDiscovery{policyGVForDiscovery},
PreferredVersion: policyGVForDiscovery,
}
allGroups = append(allGroups, group)
}
if c.APIResourceConfigSource.AnyResourcesForVersionEnabled(appsapi.SchemeGroupVersion) {
appsResources := m.getAppsResources(c)
appsGroupMeta := registered.GroupOrDie(apps.GroupName)
// Hard code preferred group version to apps/v1alpha1
appsGroupMeta.GroupVersion = appsapi.SchemeGroupVersion
apiGroupInfo := genericapiserver.APIGroupInfo{
GroupMeta: *appsGroupMeta,
VersionedResourcesStorageMap: map[string]map[string]rest.Storage{
"v1alpha1": appsResources,
},
OptionsExternalVersion: ®istered.GroupOrDie(api.GroupName).GroupVersion,
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
appsGVForDiscovery := unversioned.GroupVersionForDiscovery{
GroupVersion: appsGroupMeta.GroupVersion.String(),
Version: appsGroupMeta.GroupVersion.Version,
}
group := unversioned.APIGroup{
Name: appsGroupMeta.GroupVersion.Group,
Versions: []unversioned.GroupVersionForDiscovery{appsGVForDiscovery},
PreferredVersion: appsGVForDiscovery,
}
allGroups = append(allGroups, group)
}
if c.APIResourceConfigSource.AnyResourcesForVersionEnabled(rbacapi.SchemeGroupVersion) {
rbacResources := m.getRBACResources(c)
rbacGroupMeta := registered.GroupOrDie(rbac.GroupName)
// Hard code preferred group version to rbac/v1alpha1
rbacGroupMeta.GroupVersion = rbacapi.SchemeGroupVersion
apiGroupInfo := genericapiserver.APIGroupInfo{
GroupMeta: *rbacGroupMeta,
VersionedResourcesStorageMap: map[string]map[string]rest.Storage{
"v1alpha1": rbacResources,
},
OptionsExternalVersion: ®istered.GroupOrDie(api.GroupName).GroupVersion,
Scheme: api.Scheme,
ParameterCodec: api.ParameterCodec,
NegotiatedSerializer: api.Codecs,
}
apiGroupsInfo = append(apiGroupsInfo, apiGroupInfo)
rbacGVForDiscovery := unversioned.GroupVersionForDiscovery{
GroupVersion: rbacGroupMeta.GroupVersion.String(),
Version: rbacGroupMeta.GroupVersion.Version,
}
group := unversioned.APIGroup{
Name: rbacGroupMeta.GroupVersion.Group,
Versions: []unversioned.GroupVersionForDiscovery{rbacGVForDiscovery},
PreferredVersion: rbacGVForDiscovery,
}
allGroups = append(allGroups, group)
}
if err := m.InstallAPIGroups(apiGroupsInfo); err != nil {
glog.Fatalf("Error in registering group versions: %v", err)
}
}
func (m *Master) initV1ResourcesStorage(c *Config) {
restOptions := func(resource string) generic.RESTOptions {
return m.GetRESTOptionsOrDie(c, api.Resource(resource))
}
podTemplateStorage := podtemplateetcd.NewREST(restOptions("podTemplates"))
eventStorage := eventetcd.NewREST(restOptions("events"), uint64(c.EventTTL.Seconds()))
limitRangeStorage := limitrangeetcd.NewREST(restOptions("limitRanges"))
resourceQuotaStorage, resourceQuotaStatusStorage := resourcequotaetcd.NewREST(restOptions("resourceQuotas"))
secretStorage := secretetcd.NewREST(restOptions("secrets"))
serviceAccountStorage := serviceaccountetcd.NewREST(restOptions("serviceAccounts"))
persistentVolumeStorage, persistentVolumeStatusStorage := pvetcd.NewREST(restOptions("persistentVolumes"))
persistentVolumeClaimStorage, persistentVolumeClaimStatusStorage := pvcetcd.NewREST(restOptions("persistentVolumeClaims"))
configMapStorage := configmapetcd.NewREST(restOptions("configMaps"))
namespaceStorage, namespaceStatusStorage, namespaceFinalizeStorage := namespaceetcd.NewREST(restOptions("namespaces"))
m.namespaceRegistry = namespace.NewRegistry(namespaceStorage)
endpointsStorage := endpointsetcd.NewREST(restOptions("endpoints"))
m.endpointRegistry = endpoint.NewRegistry(endpointsStorage)
nodeStorage := nodeetcd.NewStorage(restOptions("nodes"), c.KubeletClient, m.ProxyTransport)
m.nodeRegistry = node.NewRegistry(nodeStorage.Node)
podStorage := podetcd.NewStorage(
restOptions("pods"),
kubeletclient.ConnectionInfoGetter(nodeStorage.Node),
m.ProxyTransport,
)
serviceRESTStorage, serviceStatusStorage := serviceetcd.NewREST(restOptions("services"))
m.serviceRegistry = service.NewRegistry(serviceRESTStorage)
var serviceClusterIPRegistry service.RangeRegistry
serviceClusterIPRange := m.ServiceClusterIPRange
if serviceClusterIPRange == nil {
glog.Fatalf("service clusterIPRange is nil")
return
}
serviceStorage, err := c.StorageFactory.New(api.Resource("services"))
if err != nil {
glog.Fatal(err.Error())
}
serviceClusterIPAllocator := ipallocator.NewAllocatorCIDRRange(serviceClusterIPRange, func(max int, rangeSpec string) allocator.Interface {
mem := allocator.NewAllocationMap(max, rangeSpec)
// TODO etcdallocator package to return a storage interface via the storageFactory
etcd := etcdallocator.NewEtcd(mem, "/ranges/serviceips", api.Resource("serviceipallocations"), serviceStorage)
serviceClusterIPRegistry = etcd
return etcd
})
m.serviceClusterIPAllocator = serviceClusterIPRegistry
var serviceNodePortRegistry service.RangeRegistry
serviceNodePortAllocator := portallocator.NewPortAllocatorCustom(m.ServiceNodePortRange, func(max int, rangeSpec string) allocator.Interface {
mem := allocator.NewAllocationMap(max, rangeSpec)
// TODO etcdallocator package to return a storage interface via the storageFactory
etcd := etcdallocator.NewEtcd(mem, "/ranges/servicenodeports", api.Resource("servicenodeportallocations"), serviceStorage)
serviceNodePortRegistry = etcd
return etcd
})
m.serviceNodePortAllocator = serviceNodePortRegistry
controllerStorage := controlleretcd.NewStorage(restOptions("replicationControllers"))
serviceRest := service.NewStorage(m.serviceRegistry, m.endpointRegistry, serviceClusterIPAllocator, serviceNodePortAllocator, m.ProxyTransport)
// TODO: Factor out the core API registration
m.v1ResourcesStorage = map[string]rest.Storage{
"pods": podStorage.Pod,
"pods/attach": podStorage.Attach,
"pods/status": podStorage.Status,
"pods/log": podStorage.Log,
"pods/exec": podStorage.Exec,
"pods/portforward": podStorage.PortForward,
"pods/proxy": podStorage.Proxy,
"pods/binding": podStorage.Binding,
"bindings": podStorage.Binding,
"podTemplates": podTemplateStorage,
"replicationControllers": controllerStorage.Controller,
"replicationControllers/status": controllerStorage.Status,
"services": serviceRest.Service,
"services/proxy": serviceRest.Proxy,
"services/status": serviceStatusStorage,
"endpoints": endpointsStorage,
"nodes": nodeStorage.Node,
"nodes/status": nodeStorage.Status,
"nodes/proxy": nodeStorage.Proxy,
"events": eventStorage,
"limitRanges": limitRangeStorage,
"resourceQuotas": resourceQuotaStorage,
"resourceQuotas/status": resourceQuotaStatusStorage,
"namespaces": namespaceStorage,
"namespaces/status": namespaceStatusStorage,
"namespaces/finalize": namespaceFinalizeStorage,
"secrets": secretStorage,
"serviceAccounts": serviceAccountStorage,
"persistentVolumes": persistentVolumeStorage,
"persistentVolumes/status": persistentVolumeStatusStorage,
"persistentVolumeClaims": persistentVolumeClaimStorage,
"persistentVolumeClaims/status": persistentVolumeClaimStatusStorage,
"configMaps": configMapStorage,
"componentStatuses": componentstatus.NewStorage(func() map[string]apiserver.Server { return m.getServersToValidate(c) }),
}
if registered.IsEnabledVersion(unversioned.GroupVersion{Group: "autoscaling", Version: "v1"}) {
m.v1ResourcesStorage["replicationControllers/scale"] = controllerStorage.Scale
}
}
// NewBootstrapController returns a controller for watching the core capabilities of the master.
func (m *Master) NewBootstrapController() *Controller {
return &Controller{
NamespaceRegistry: m.namespaceRegistry,
ServiceRegistry: m.serviceRegistry,
EndpointReconciler: NewMasterCountEndpointReconciler(m.MasterCount, m.endpointRegistry),
EndpointInterval: 10 * time.Second,
SystemNamespaces: []string{api.NamespaceSystem},
SystemNamespacesInterval: 1 * time.Minute,
ServiceClusterIPRegistry: m.serviceClusterIPAllocator,
ServiceClusterIPRange: m.ServiceClusterIPRange,
ServiceClusterIPInterval: 3 * time.Minute,
ServiceNodePortRegistry: m.serviceNodePortAllocator,
ServiceNodePortRange: m.ServiceNodePortRange,
ServiceNodePortInterval: 3 * time.Minute,
PublicIP: m.ClusterIP,
ServiceIP: m.ServiceReadWriteIP,
ServicePort: m.ServiceReadWritePort,
ExtraServicePorts: m.ExtraServicePorts,
ExtraEndpointPorts: m.ExtraEndpointPorts,
PublicServicePort: m.PublicReadWritePort,
KubernetesServiceNodePort: m.KubernetesServiceNodePort,
}
}
func (m *Master) getServersToValidate(c *Config) map[string]apiserver.Server {
serversToValidate := map[string]apiserver.Server{
"controller-manager": {Addr: "127.0.0.1", Port: ports.ControllerManagerPort, Path: "/healthz"},
"scheduler": {Addr: "127.0.0.1", Port: ports.SchedulerPort, Path: "/healthz"},
}
for ix, machine := range c.StorageFactory.Backends() {
etcdUrl, err := url.Parse(machine)
if err != nil {
glog.Errorf("Failed to parse etcd url for validation: %v", err)
continue
}
var port int
var addr string
if strings.Contains(etcdUrl.Host, ":") {
var portString string
addr, portString, err = net.SplitHostPort(etcdUrl.Host)
if err != nil {
glog.Errorf("Failed to split host/port: %s (%v)", etcdUrl.Host, err)
continue
}
port, _ = strconv.Atoi(portString)
} else {
addr = etcdUrl.Host
port = 4001
}
// TODO: etcd health checking should be abstracted in the storage tier
serversToValidate[fmt.Sprintf("etcd-%d", ix)] = apiserver.Server{
Addr: addr,
EnableHTTPS: etcdUrl.Scheme == "https",
Port: port,
Path: "/health",
Validate: etcdutil.EtcdHealthCheck,
}
}
return serversToValidate
}
// HasThirdPartyResource returns true if a particular third party resource currently installed.
func (m *Master) HasThirdPartyResource(rsrc *extensions.ThirdPartyResource) (bool, error) {
_, group, err := thirdpartyresourcedata.ExtractApiGroupAndKind(rsrc)
if err != nil {
return false, err
}
path := makeThirdPartyPath(group)
services := m.HandlerContainer.RegisteredWebServices()
for ix := range services {
if services[ix].RootPath() == path {
return true, nil
}
}
return false, nil
}
func (m *Master) removeThirdPartyStorage(path string) error {
m.thirdPartyResourcesLock.Lock()
defer m.thirdPartyResourcesLock.Unlock()
storage, found := m.thirdPartyResources[path]
if found {
if err := m.removeAllThirdPartyResources(storage.storage); err != nil {
return err
}
delete(m.thirdPartyResources, path)
m.RemoveAPIGroupForDiscovery(getThirdPartyGroupName(path))
}
return nil
}
// RemoveThirdPartyResource removes all resources matching `path`. Also deletes any stored data
func (m *Master) RemoveThirdPartyResource(path string) error {
if err := m.removeThirdPartyStorage(path); err != nil {
return err
}
services := m.HandlerContainer.RegisteredWebServices()
for ix := range services {
root := services[ix].RootPath()
if root == path || strings.HasPrefix(root, path+"/") {
m.HandlerContainer.Remove(services[ix])
}
}
return nil
}
func (m *Master) removeAllThirdPartyResources(registry *thirdpartyresourcedataetcd.REST) error {
ctx := api.NewDefaultContext()
existingData, err := registry.List(ctx, nil)
if err != nil {
return err
}
list, ok := existingData.(*extensions.ThirdPartyResourceDataList)
if !ok {
return fmt.Errorf("expected a *ThirdPartyResourceDataList, got %#v", list)
}
for ix := range list.Items {
item := &list.Items[ix]
if _, err := registry.Delete(ctx, item.Name, nil); err != nil {
return err
}
}
return nil
}
// ListThirdPartyResources lists all currently installed third party resources
func (m *Master) ListThirdPartyResources() []string {
m.thirdPartyResourcesLock.RLock()
defer m.thirdPartyResourcesLock.RUnlock()
result := []string{}
for key := range m.thirdPartyResources {
result = append(result, key)
}
return result
}
func (m *Master) addThirdPartyResourceStorage(path string, storage *thirdpartyresourcedataetcd.REST, apiGroup unversioned.APIGroup) {
m.thirdPartyResourcesLock.Lock()
defer m.thirdPartyResourcesLock.Unlock()
m.thirdPartyResources[path] = thirdPartyEntry{storage, apiGroup}
m.AddAPIGroupForDiscovery(apiGroup)
}
// InstallThirdPartyResource installs a third party resource specified by 'rsrc'. When a resource is
// installed a corresponding RESTful resource is added as a valid path in the web service provided by
// the master.
//
// For example, if you install a resource ThirdPartyResource{ Name: "foo.company.com", Versions: {"v1"} }
// then the following RESTful resource is created on the server:
// http://<host>/apis/company.com/v1/foos/...
func (m *Master) InstallThirdPartyResource(rsrc *extensions.ThirdPartyResource) error {
kind, group, err := thirdpartyresourcedata.ExtractApiGroupAndKind(rsrc)
if err != nil {
return err
}
plural, _ := meta.KindToResource(unversioned.GroupVersionKind{
Group: group,
Version: rsrc.Versions[0].Name,
Kind: kind,
})
thirdparty := m.thirdpartyapi(group, kind, rsrc.Versions[0].Name, plural.Resource)
if err := thirdparty.InstallREST(m.HandlerContainer); err != nil {
glog.Fatalf("Unable to setup thirdparty api: %v", err)
}
path := makeThirdPartyPath(group)
groupVersion := unversioned.GroupVersionForDiscovery{
GroupVersion: group + "/" + rsrc.Versions[0].Name,
Version: rsrc.Versions[0].Name,
}
apiGroup := unversioned.APIGroup{
Name: group,
Versions: []unversioned.GroupVersionForDiscovery{groupVersion},
PreferredVersion: groupVersion,
}
apiserver.AddGroupWebService(api.Codecs, m.HandlerContainer, path, apiGroup)
m.addThirdPartyResourceStorage(path, thirdparty.Storage[plural.Resource].(*thirdpartyresourcedataetcd.REST), apiGroup)
apiserver.InstallServiceErrorHandler(api.Codecs, m.HandlerContainer, m.NewRequestInfoResolver(), []string{thirdparty.GroupVersion.String()})
return nil
}
func (m *Master) thirdpartyapi(group, kind, version, pluralResource string) *apiserver.APIGroupVersion {
resourceStorage := thirdpartyresourcedataetcd.NewREST(
generic.RESTOptions{
Storage: m.thirdPartyStorage,
Decorator: generic.UndecoratedStorage,
DeleteCollectionWorkers: m.deleteCollectionWorkers,
},
group,
kind,
)
apiRoot := makeThirdPartyPath("")
storage := map[string]rest.Storage{
pluralResource: resourceStorage,
}
optionsExternalVersion := registered.GroupOrDie(api.GroupName).GroupVersion
internalVersion := unversioned.GroupVersion{Group: group, Version: runtime.APIVersionInternal}
externalVersion := unversioned.GroupVersion{Group: group, Version: version}
return &apiserver.APIGroupVersion{
Root: apiRoot,
GroupVersion: externalVersion,
RequestInfoResolver: m.NewRequestInfoResolver(),
Creater: thirdpartyresourcedata.NewObjectCreator(group, version, api.Scheme),
Convertor: api.Scheme,
Copier: api.Scheme,
Typer: api.Scheme,
Mapper: thirdpartyresourcedata.NewMapper(registered.GroupOrDie(extensions.GroupName).RESTMapper, kind, version, group),
Linker: registered.GroupOrDie(extensions.GroupName).SelfLinker,
Storage: storage,
OptionsExternalVersion: &optionsExternalVersion,
Serializer: thirdpartyresourcedata.NewNegotiatedSerializer(api.Codecs, kind, externalVersion, internalVersion),
ParameterCodec: thirdpartyresourcedata.NewThirdPartyParameterCodec(api.ParameterCodec),
Context: m.RequestContextMapper,
MinRequestTimeout: m.MinRequestTimeout,
}
}
func (m *Master) GetRESTOptionsOrDie(c *Config, resource unversioned.GroupResource) generic.RESTOptions {
storage, err := c.StorageFactory.New(resource)
if err != nil {
glog.Fatalf("Unable to find storage destination for %v, due to %v", resource, err.Error())
}
return generic.RESTOptions{
Storage: storage,
Decorator: m.StorageDecorator(),
DeleteCollectionWorkers: m.deleteCollectionWorkers,
}
}
// getExperimentalResources returns the resources for extensions api
func (m *Master) getExtensionResources(c *Config) map[string]rest.Storage {
restOptions := func(resource string) generic.RESTOptions {
return m.GetRESTOptionsOrDie(c, extensions.Resource(resource))
}
// TODO update when we support more than one version of this group
version := extensionsapiv1beta1.SchemeGroupVersion
storage := map[string]rest.Storage{}
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("horizontalpodautoscalers")) {
hpaStorage, hpaStatusStorage := horizontalpodautoscaleretcd.NewREST(restOptions("horizontalpodautoscalers"))
storage["horizontalpodautoscalers"] = hpaStorage
storage["horizontalpodautoscalers/status"] = hpaStatusStorage
controllerStorage := expcontrolleretcd.NewStorage(m.GetRESTOptionsOrDie(c, api.Resource("replicationControllers")))
storage["replicationcontrollers"] = controllerStorage.ReplicationController
storage["replicationcontrollers/scale"] = controllerStorage.Scale
}
thirdPartyResourceStorage := thirdpartyresourceetcd.NewREST(restOptions("thirdpartyresources"))
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("thirdpartyresources")) {
thirdPartyControl := ThirdPartyController{
master: m,
thirdPartyResourceRegistry: thirdPartyResourceStorage,
}
if !m.disableThirdPartyControllerForTesting {
go wait.Forever(func() {
if err := thirdPartyControl.SyncResources(); err != nil {
glog.Warningf("third party resource sync failed: %v", err)
}
}, 10*time.Second)
}
storage["thirdpartyresources"] = thirdPartyResourceStorage
}
daemonSetStorage, daemonSetStatusStorage := daemonetcd.NewREST(restOptions("daemonsets"))
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("daemonsets")) {
storage["daemonsets"] = daemonSetStorage
storage["daemonsets/status"] = daemonSetStatusStorage
}
deploymentStorage := deploymentetcd.NewStorage(restOptions("deployments"))
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("deployments")) {
storage["deployments"] = deploymentStorage.Deployment
storage["deployments/status"] = deploymentStorage.Status
storage["deployments/rollback"] = deploymentStorage.Rollback
storage["deployments/scale"] = deploymentStorage.Scale
}
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("jobs")) {
jobsStorage, jobsStatusStorage := jobetcd.NewREST(restOptions("jobs"))
storage["jobs"] = jobsStorage
storage["jobs/status"] = jobsStatusStorage
}
ingressStorage, ingressStatusStorage := ingressetcd.NewREST(restOptions("ingresses"))
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("ingresses")) {
storage["ingresses"] = ingressStorage
storage["ingresses/status"] = ingressStatusStorage
}
podSecurityPolicyStorage := pspetcd.NewREST(restOptions("podsecuritypolicy"))
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("podsecuritypolicy")) {
storage["podSecurityPolicies"] = podSecurityPolicyStorage
}
replicaSetStorage := replicasetetcd.NewStorage(restOptions("replicasets"))
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("replicasets")) {
storage["replicasets"] = replicaSetStorage.ReplicaSet
storage["replicasets/status"] = replicaSetStorage.Status
storage["replicasets/scale"] = replicaSetStorage.Scale
}
networkPolicyStorage := networkpolicyetcd.NewREST(restOptions("networkpolicies"))
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("networkpolicies")) {
storage["networkpolicies"] = networkPolicyStorage
}
return storage
}
// getAutoscalingResources returns the resources for autoscaling api
func (m *Master) getAutoscalingResources(c *Config) map[string]rest.Storage {
// TODO update when we support more than one version of this group
version := autoscalingapiv1.SchemeGroupVersion
storage := map[string]rest.Storage{}
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("horizontalpodautoscalers")) {
hpaStorage, hpaStatusStorage := horizontalpodautoscaleretcd.NewREST(m.GetRESTOptionsOrDie(c, autoscaling.Resource("horizontalpodautoscalers")))
storage["horizontalpodautoscalers"] = hpaStorage
storage["horizontalpodautoscalers/status"] = hpaStatusStorage
}
return storage
}
// getBatchResources returns the resources for batch api
func (m *Master) getBatchResources(c *Config, version unversioned.GroupVersion) map[string]rest.Storage {
storage := map[string]rest.Storage{}
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("jobs")) {
jobsStorage, jobsStatusStorage := jobetcd.NewREST(m.GetRESTOptionsOrDie(c, batch.Resource("jobs")))
storage["jobs"] = jobsStorage
storage["jobs/status"] = jobsStatusStorage
}
return storage
}
// getPolicyResources returns the resources for policy api
func (m *Master) getPolicyResources(c *Config) map[string]rest.Storage {
// TODO update when we support more than one version of this group
version := policyapiv1alpha1.SchemeGroupVersion
storage := map[string]rest.Storage{}
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("poddisruptionbudgets")) {
poddisruptionbudgetStorage, poddisruptionbudgetStatusStorage := poddisruptionbudgetetcd.NewREST(m.GetRESTOptionsOrDie(c, policy.Resource("poddisruptionbudgets")))
storage["poddisruptionbudgets"] = poddisruptionbudgetStorage
storage["poddisruptionbudgets/status"] = poddisruptionbudgetStatusStorage
}
return storage
}
// getAppsResources returns the resources for apps api
func (m *Master) getAppsResources(c *Config) map[string]rest.Storage {
// TODO update when we support more than one version of this group
version := appsapi.SchemeGroupVersion
storage := map[string]rest.Storage{}
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("petsets")) {
petsetStorage, petsetStatusStorage := petsetetcd.NewREST(m.GetRESTOptionsOrDie(c, apps.Resource("petsets")))
storage["petsets"] = petsetStorage
storage["petsets/status"] = petsetStatusStorage
}
return storage
}
func (m *Master) getRBACResources(c *Config) map[string]rest.Storage {
version := rbacapi.SchemeGroupVersion
once := new(sync.Once)
var authorizationRuleResolver rbacvalidation.AuthorizationRuleResolver
newRuleValidator := func() rbacvalidation.AuthorizationRuleResolver {
once.Do(func() {
authorizationRuleResolver = rbacvalidation.NewDefaultRuleResolver(
role.NewRegistry(roleetcd.NewREST(m.GetRESTOptionsOrDie(c, rbac.Resource("roles")))),
rolebinding.NewRegistry(rolebindingetcd.NewREST(m.GetRESTOptionsOrDie(c, rbac.Resource("rolebindings")))),
clusterrole.NewRegistry(clusterroleetcd.NewREST(m.GetRESTOptionsOrDie(c, rbac.Resource("clusterroles")))),
clusterrolebinding.NewRegistry(clusterrolebindingetcd.NewREST(m.GetRESTOptionsOrDie(c, rbac.Resource("clusterrolebindings")))),
)
})
return authorizationRuleResolver
}
storage := map[string]rest.Storage{}
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("roles")) {
rolesStorage := roleetcd.NewREST(m.GetRESTOptionsOrDie(c, rbac.Resource("roles")))
storage["roles"] = rolepolicybased.NewStorage(rolesStorage, newRuleValidator(), c.AuthorizerRBACSuperUser)
}
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("rolebindings")) {
roleBindingsStorage := rolebindingetcd.NewREST(m.GetRESTOptionsOrDie(c, rbac.Resource("rolebindings")))
storage["rolebindings"] = rolebindingpolicybased.NewStorage(roleBindingsStorage, newRuleValidator(), c.AuthorizerRBACSuperUser)
}
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("clusterroles")) {
clusterRolesStorage := clusterroleetcd.NewREST(m.GetRESTOptionsOrDie(c, rbac.Resource("clusterroles")))
storage["clusterroles"] = clusterrolepolicybased.NewStorage(clusterRolesStorage, newRuleValidator(), c.AuthorizerRBACSuperUser)
}
if c.APIResourceConfigSource.ResourceEnabled(version.WithResource("clusterrolebindings")) {
clusterRoleBindingsStorage := clusterrolebindingetcd.NewREST(m.GetRESTOptionsOrDie(c, rbac.Resource("clusterrolebindings")))
storage["clusterrolebindings"] = clusterrolebindingpolicybased.NewStorage(clusterRoleBindingsStorage, newRuleValidator(), c.AuthorizerRBACSuperUser)
}
return storage