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master_config.go
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master_config.go
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package master
import (
"crypto/tls"
"fmt"
"io"
"io/ioutil"
"net"
"net/http"
"net/url"
"regexp"
"strconv"
"strings"
"time"
"github.com/MakeNowJust/heredoc"
restful "github.com/emicklei/go-restful"
"github.com/go-openapi/spec"
"github.com/golang/glog"
"gopkg.in/natefinch/lumberjack.v2"
openapicommon "k8s.io/apimachinery/pkg/openapi"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/runtime/schema"
kerrors "k8s.io/apimachinery/pkg/util/errors"
"k8s.io/apimachinery/pkg/util/intstr"
knet "k8s.io/apimachinery/pkg/util/net"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apiserver/pkg/admission"
auditinternal "k8s.io/apiserver/pkg/apis/audit"
"k8s.io/apiserver/pkg/audit"
auditpolicy "k8s.io/apiserver/pkg/audit/policy"
"k8s.io/apiserver/pkg/authentication/authenticator"
"k8s.io/apiserver/pkg/authorization/authorizer"
apiserverendpointsopenapi "k8s.io/apiserver/pkg/endpoints/openapi"
apirequest "k8s.io/apiserver/pkg/endpoints/request"
"k8s.io/apiserver/pkg/registry/generic"
apiserver "k8s.io/apiserver/pkg/server"
kgenericfilters "k8s.io/apiserver/pkg/server/filters"
apiserveroptions "k8s.io/apiserver/pkg/server/options"
genericoptions "k8s.io/apiserver/pkg/server/options"
"k8s.io/apiserver/pkg/server/options/encryptionconfig"
apiserverstorage "k8s.io/apiserver/pkg/server/storage"
"k8s.io/apiserver/pkg/storage"
storagefactory "k8s.io/apiserver/pkg/storage/storagebackend/factory"
utilflag "k8s.io/apiserver/pkg/util/flag"
auditlog "k8s.io/apiserver/plugin/pkg/audit/log"
auditwebhook "k8s.io/apiserver/plugin/pkg/audit/webhook"
kubeclientgoinformers "k8s.io/client-go/informers"
kapiserveroptions "k8s.io/kubernetes/cmd/kube-apiserver/app/options"
kapi "k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/apis/apps"
"k8s.io/kubernetes/pkg/apis/autoscaling"
"k8s.io/kubernetes/pkg/apis/batch"
batchv2alpha1 "k8s.io/kubernetes/pkg/apis/batch/v2alpha1"
"k8s.io/kubernetes/pkg/apis/extensions"
"k8s.io/kubernetes/pkg/apis/networking"
"k8s.io/kubernetes/pkg/master"
"k8s.io/kubernetes/pkg/registry/cachesize"
"k8s.io/kubernetes/pkg/registry/core/endpoint"
endpointsstorage "k8s.io/kubernetes/pkg/registry/core/endpoint/storage"
rbacrest "k8s.io/kubernetes/pkg/registry/rbac/rest"
kversion "k8s.io/kubernetes/pkg/version"
"github.com/openshift/origin/pkg/api"
oauthorizer "github.com/openshift/origin/pkg/authorization/authorizer"
"github.com/openshift/origin/pkg/authorization/authorizer/scope"
"github.com/openshift/origin/pkg/cmd/flagtypes"
configapi "github.com/openshift/origin/pkg/cmd/server/api"
"github.com/openshift/origin/pkg/cmd/server/bootstrappolicy"
"github.com/openshift/origin/pkg/cmd/server/crypto"
"github.com/openshift/origin/pkg/cmd/server/election"
cmdutil "github.com/openshift/origin/pkg/cmd/util"
cmdflags "github.com/openshift/origin/pkg/cmd/util/flags"
oauthutil "github.com/openshift/origin/pkg/oauth/util"
openapigenerated "github.com/openshift/origin/pkg/openapi"
securityapi "github.com/openshift/origin/pkg/security/apis/security"
"github.com/openshift/origin/pkg/version"
)
// request paths that match this regular expression will be treated as long running
// and not subjected to the default server timeout.
const originLongRunningEndpointsRE = "(/|^)(buildconfigs/.*/instantiatebinary|imagestreamimports)$"
var LegacyAPIGroupPrefixes = sets.NewString(apiserver.DefaultLegacyAPIPrefix, api.Prefix)
// BuildKubeAPIserverOptions constructs the appropriate kube-apiserver run options.
// It returns an error if no KubernetesMasterConfig was defined.
func BuildKubeAPIserverOptions(masterConfig configapi.MasterConfig) (*kapiserveroptions.ServerRunOptions, error) {
if masterConfig.KubernetesMasterConfig == nil {
return nil, fmt.Errorf("no kubernetesMasterConfig defined, unable to load settings")
}
_, portString, err := net.SplitHostPort(masterConfig.ServingInfo.BindAddress)
if err != nil {
return nil, err
}
port, err := strconv.Atoi(portString)
if err != nil {
return nil, err
}
portRange, err := knet.ParsePortRange(masterConfig.KubernetesMasterConfig.ServicesNodePortRange)
if err != nil {
return nil, err
}
// Defaults are tested in TestAPIServerDefaults
server := kapiserveroptions.NewServerRunOptions()
// Adjust defaults
server.EnableLogsHandler = false
server.EventTTL = 2 * time.Hour
server.ServiceClusterIPRange = net.IPNet(flagtypes.DefaultIPNet(masterConfig.KubernetesMasterConfig.ServicesSubnet))
server.ServiceNodePortRange = *portRange
server.Features.EnableProfiling = true
server.MasterCount = masterConfig.KubernetesMasterConfig.MasterCount
server.SecureServing.BindPort = port
server.SecureServing.ServerCert.CertKey.CertFile = masterConfig.ServingInfo.ServerCert.CertFile
server.SecureServing.ServerCert.CertKey.KeyFile = masterConfig.ServingInfo.ServerCert.KeyFile
server.InsecureServing.BindPort = 0
// disable anonymous authentication
// NOTE: this is only to get rid of the "AnonymousAuth is not allowed with the AllowAll authorizer"
// warning. We do not use the authenticator or authorizer created by this.
server.Authentication.Anonymous.Allow = false
server.Authentication.ClientCert = &apiserveroptions.ClientCertAuthenticationOptions{masterConfig.ServingInfo.ClientCA}
if masterConfig.AuthConfig.RequestHeader == nil {
server.Authentication.RequestHeader = &genericoptions.RequestHeaderAuthenticationOptions{}
} else {
server.Authentication.RequestHeader = &genericoptions.RequestHeaderAuthenticationOptions{
ClientCAFile: masterConfig.AuthConfig.RequestHeader.ClientCA,
UsernameHeaders: masterConfig.AuthConfig.RequestHeader.UsernameHeaders,
GroupHeaders: masterConfig.AuthConfig.RequestHeader.GroupHeaders,
ExtraHeaderPrefixes: masterConfig.AuthConfig.RequestHeader.ExtraHeaderPrefixes,
AllowedNames: masterConfig.AuthConfig.RequestHeader.ClientCommonNames,
}
}
server.Etcd.EnableGarbageCollection = true
server.Etcd.StorageConfig.Type = "etcd2" // TODO(post-1.6.1-rebase): enable etcd3 as upstream
server.Etcd.DefaultStorageMediaType = "application/json" // TODO(post-1.6.1-rebase): enable protobuf with etcd3 as upstream
server.Etcd.StorageConfig.Quorum = true
server.Etcd.StorageConfig.Prefix = masterConfig.EtcdStorageConfig.KubernetesStoragePrefix
server.Etcd.StorageConfig.ServerList = masterConfig.EtcdClientInfo.URLs
server.Etcd.StorageConfig.KeyFile = masterConfig.EtcdClientInfo.ClientCert.KeyFile
server.Etcd.StorageConfig.CertFile = masterConfig.EtcdClientInfo.ClientCert.CertFile
server.Etcd.StorageConfig.CAFile = masterConfig.EtcdClientInfo.CA
server.Etcd.DefaultWatchCacheSize = 0
server.GenericServerRunOptions.CorsAllowedOriginList = masterConfig.CORSAllowedOrigins
server.GenericServerRunOptions.MaxRequestsInFlight = masterConfig.ServingInfo.MaxRequestsInFlight
server.GenericServerRunOptions.MaxMutatingRequestsInFlight = masterConfig.ServingInfo.MaxRequestsInFlight / 2
server.GenericServerRunOptions.MinRequestTimeout = masterConfig.ServingInfo.RequestTimeoutSeconds
for _, nc := range masterConfig.ServingInfo.NamedCertificates {
sniCert := utilflag.NamedCertKey{
CertFile: nc.CertFile,
KeyFile: nc.KeyFile,
Names: nc.Names,
}
server.SecureServing.SNICertKeys = append(server.SecureServing.SNICertKeys, sniCert)
}
server.KubeletConfig.ReadOnlyPort = 0
// resolve extended arguments
args := map[string][]string{}
for k, v := range masterConfig.KubernetesMasterConfig.APIServerArguments {
args[k] = v
}
if masterConfig.AuditConfig.Enabled {
if existing, ok := args["feature-gates"]; ok {
args["feature-gates"] = []string{existing[0] + ",AdvancedAuditing=true"}
} else {
args["feature-gates"] = []string{"AdvancedAuditing=true"}
}
}
// TODO: this should be done in config validation (along with the above) so we can provide
// proper errors
if err := cmdflags.Resolve(args, server.AddFlags); len(err) > 0 {
return nil, kerrors.NewAggregate(err)
}
return server, nil
}
// BuildStorageFactory builds a storage factory based on server.Etcd.StorageConfig with overrides from masterConfig.
// This storage factory is used for kubernetes and origin registries. Compare pkg/util/restoptions/configgetter.go.
func BuildStorageFactory(server *kapiserveroptions.ServerRunOptions, enforcedStorageVersions map[schema.GroupResource]schema.GroupVersion) (*apiserverstorage.DefaultStorageFactory, error) {
resourceEncodingConfig := apiserverstorage.NewDefaultResourceEncodingConfig(kapi.Registry)
storageGroupsToEncodingVersion, err := server.StorageSerialization.StorageGroupsToEncodingVersion()
if err != nil {
return nil, err
}
for group, storageEncodingVersion := range storageGroupsToEncodingVersion {
resourceEncodingConfig.SetVersionEncoding(group, storageEncodingVersion, schema.GroupVersion{Group: group, Version: runtime.APIVersionInternal})
}
resourceEncodingConfig.SetResourceEncoding(batch.Resource("cronjobs"), batchv2alpha1.SchemeGroupVersion, batch.SchemeGroupVersion)
for gr, storageGV := range enforcedStorageVersions {
resourceEncodingConfig.SetResourceEncoding(gr, storageGV, schema.GroupVersion{Group: storageGV.Group, Version: runtime.APIVersionInternal})
}
storageFactory := apiserverstorage.NewDefaultStorageFactory(
server.Etcd.StorageConfig,
server.Etcd.DefaultStorageMediaType,
kapi.Codecs,
resourceEncodingConfig,
master.DefaultAPIResourceConfigSource(),
)
if err != nil {
return nil, err
}
// the order here is important, it defines which version will be used for storage
// keep HPAs in the autoscaling apigroup (as in upstream 1.6), but keep extension cohabitation around until origin 3.7.
storageFactory.AddCohabitatingResources(autoscaling.Resource("horizontalpodautoscalers"), extensions.Resource("horizontalpodautoscalers"))
// keep Deployments in extensions for backwards compatibility, we'll have to migrate at some point, eventually
storageFactory.AddCohabitatingResources(extensions.Resource("deployments"), apps.Resource("deployments"))
storageFactory.AddCohabitatingResources(extensions.Resource("networkpolicies"), networking.Resource("networkpolicies"))
storageFactory.AddCohabitatingResources(kapi.Resource("securitycontextconstraints"), securityapi.Resource("securitycontextconstraints"))
if server.Etcd.EncryptionProviderConfigFilepath != "" {
glog.V(4).Infof("Reading encryption configuration from %q", server.Etcd.EncryptionProviderConfigFilepath)
transformerOverrides, err := encryptionconfig.GetTransformerOverrides(server.Etcd.EncryptionProviderConfigFilepath)
if err != nil {
return nil, err
}
for groupResource, transformer := range transformerOverrides {
storageFactory.SetTransformer(groupResource, transformer)
}
}
return storageFactory, nil
}
// buildUpstreamGenericConfig copies the apiserver.Config setup code from k8s.io/kubernetes/cmd/kube-apiserver/app/server.go.
// ONLY COMMENT OUT CODE HERE, do not modify it. Do modifications outside of this function.
func buildUpstreamGenericConfig(s *kapiserveroptions.ServerRunOptions) (*apiserver.Config, error) {
// set defaults
if err := s.GenericServerRunOptions.DefaultAdvertiseAddress(s.SecureServing); err != nil {
return nil, err
}
// In origin: certs should be available:
//_, apiServerServiceIP, err := master.DefaultServiceIPRange(s.ServiceClusterIPRange)
//if err != nil {
// return nil, fmt.Errorf("error determining service IP ranges: %v", err)
//}
//if err := s.SecureServing.MaybeDefaultWithSelfSignedCerts(s.GenericServerRunOptions.AdvertiseAddress.String(), apiServerServiceIP); err != nil {
// return nil, fmt.Errorf("error creating self-signed certificates: %v", err)
//}
if err := s.CloudProvider.DefaultExternalHost(s.GenericServerRunOptions); err != nil {
return nil, fmt.Errorf("error setting the external host value: %v", err)
}
s.Authentication.ApplyAuthorization(s.Authorization)
// validate options
if errs := s.Validate(); len(errs) != 0 {
return nil, kerrors.NewAggregate(errs)
}
// create config from options
genericConfig := apiserver.NewConfig(kapi.Codecs)
if err := s.GenericServerRunOptions.ApplyTo(genericConfig); err != nil {
return nil, err
}
if err := s.Etcd.ApplyTo(genericConfig); err != nil {
return nil, err
}
if err := s.SecureServing.ApplyTo(genericConfig); err != nil {
return nil, err
}
if _, err := s.InsecureServing.ApplyTo(genericConfig); err != nil {
return nil, err
}
if err := s.Audit.ApplyTo(genericConfig); err != nil {
return nil, err
}
if err := s.Features.ApplyTo(genericConfig); err != nil {
return nil, err
}
if err := s.Authentication.ApplyTo(genericConfig); err != nil {
return nil, err
}
// Do not wait for etcd because the internal etcd is launched after this and origin has an etcd test already
// if err := utilwait.PollImmediate(etcdRetryInterval, etcdRetryLimit*etcdRetryInterval, preflight.EtcdConnection{ServerList: s.Etcd.StorageConfig.ServerList}.CheckEtcdServers); err != nil {
// return nil, fmt.Errorf("error waiting for etcd connection: %v", err)
// }
// Use protobufs for self-communication.
// Since not every generic apiserver has to support protobufs, we
// cannot default to it in generic apiserver and need to explicitly
// set it in kube-apiserver.
genericConfig.LoopbackClientConfig.ContentConfig.ContentType = "application/vnd.kubernetes.protobuf"
return genericConfig, nil
}
// buildUpstreamClientCARegistrationHook copies the ClientCARegistrationHook code from k8s.io/kubernetes/cmd/kube-apiserver/app/server.go.
// ONLY COMMENT OUT CODE HERE, do not modify it. Do modifications outside of this function.
func buildUpstreamClientCARegistrationHook(s *kapiserveroptions.ServerRunOptions) (master.ClientCARegistrationHook, error) {
clientCA, err := readCAorNil(s.Authentication.ClientCert.ClientCA)
if err != nil {
return master.ClientCARegistrationHook{}, err
}
requestHeaderProxyCA, err := readCAorNil(s.Authentication.RequestHeader.ClientCAFile)
if err != nil {
return master.ClientCARegistrationHook{}, err
}
return master.ClientCARegistrationHook{
ClientCA: clientCA,
RequestHeaderUsernameHeaders: s.Authentication.RequestHeader.UsernameHeaders,
RequestHeaderGroupHeaders: s.Authentication.RequestHeader.GroupHeaders,
RequestHeaderExtraHeaderPrefixes: s.Authentication.RequestHeader.ExtraHeaderPrefixes,
RequestHeaderCA: requestHeaderProxyCA,
RequestHeaderAllowedNames: s.Authentication.RequestHeader.AllowedNames,
}, nil
}
func buildProxyClientCerts(masterConfig configapi.MasterConfig) ([]tls.Certificate, error) {
var proxyClientCerts []tls.Certificate
if len(masterConfig.KubernetesMasterConfig.ProxyClientInfo.CertFile) > 0 {
clientCert, err := tls.LoadX509KeyPair(
masterConfig.KubernetesMasterConfig.ProxyClientInfo.CertFile,
masterConfig.KubernetesMasterConfig.ProxyClientInfo.KeyFile,
)
if err != nil {
return nil, err
}
proxyClientCerts = append(proxyClientCerts, clientCert)
}
return proxyClientCerts, nil
}
func buildPublicAddress(masterConfig configapi.MasterConfig) (net.IP, error) {
// Preserve previous behavior of using the first non-loopback address
// TODO: Deprecate this behavior and just require a valid value to be passed in
publicAddress := net.ParseIP(masterConfig.KubernetesMasterConfig.MasterIP)
if publicAddress == nil || publicAddress.IsUnspecified() || publicAddress.IsLoopback() {
hostIP, err := knet.ChooseHostInterface()
if err != nil {
return net.IP{}, fmt.Errorf("unable to find suitable network address.error='%v'. Set the masterIP directly to avoid this error.", err)
}
publicAddress = hostIP
glog.Infof("Will report %v as public IP address.", publicAddress)
}
return publicAddress, nil
}
func buildKubeApiserverConfig(
masterConfig configapi.MasterConfig,
admissionControl admission.Interface,
originAuthenticator authenticator.Request,
kubeAuthorizer authorizer.Authorizer,
clientGoInformers kubeclientgoinformers.SharedInformerFactory,
) (*master.Config, error) {
apiserverOptions, err := BuildKubeAPIserverOptions(masterConfig)
if err != nil {
return nil, err
}
genericConfig, err := buildUpstreamGenericConfig(apiserverOptions)
if err != nil {
return nil, err
}
proxyClientCerts, err := buildProxyClientCerts(masterConfig)
if err != nil {
return nil, err
}
storageFactory, err := BuildStorageFactory(apiserverOptions, nil)
if err != nil {
return nil, err
}
publicAddress, err := buildPublicAddress(masterConfig)
if err != nil {
return nil, err
}
clientCARegistrationHook, err := buildUpstreamClientCARegistrationHook(apiserverOptions)
if err != nil {
return nil, err
}
// override config values
kubeVersion := kversion.Get()
genericConfig.Version = &kubeVersion
genericConfig.PublicAddress = publicAddress
genericConfig.Authenticator = originAuthenticator // this is used to fulfill the tokenreviews endpoint which is used by node authentication
genericConfig.Authorizer = kubeAuthorizer // this is used to fulfill the kube SAR endpoints
genericConfig.SharedInformerFactory = clientGoInformers
genericConfig.DisabledPostStartHooks.Insert(rbacrest.PostStartHookName)
// This disables the ThirdPartyController which removes handlers from our go-restful containers. The remove functionality is broken and destroys the serve mux.
genericConfig.DisabledPostStartHooks.Insert("extensions/third-party-resources")
genericConfig.AdmissionControl = admissionControl
genericConfig.RequestInfoResolver = openshiftRequestInfoResolver(genericConfig.RequestContextMapper)
genericConfig.OpenAPIConfig = defaultOpenAPIConfig(masterConfig)
genericConfig.SwaggerConfig = apiserver.DefaultSwaggerConfig()
genericConfig.SwaggerConfig.PostBuildHandler = customizeSwaggerDefinition
_, loopbackClientConfig, err := configapi.GetInternalKubeClient(masterConfig.MasterClients.OpenShiftLoopbackKubeConfig, masterConfig.MasterClients.OpenShiftLoopbackClientConnectionOverrides)
if err != nil {
return nil, err
}
genericConfig.LoopbackClientConfig = loopbackClientConfig
genericConfig.LegacyAPIGroupPrefixes = LegacyAPIGroupPrefixes
genericConfig.SecureServingInfo.BindAddress = masterConfig.ServingInfo.BindAddress
genericConfig.SecureServingInfo.BindNetwork = masterConfig.ServingInfo.BindNetwork
genericConfig.SecureServingInfo.MinTLSVersion = crypto.TLSVersionOrDie(masterConfig.ServingInfo.MinTLSVersion)
genericConfig.SecureServingInfo.CipherSuites = crypto.CipherSuitesOrDie(masterConfig.ServingInfo.CipherSuites)
oAuthClientCertCAs, err := configapi.GetOAuthClientCertCAs(masterConfig)
if err != nil {
glog.Fatalf("Error setting up OAuth2 client certificates: %v", err)
}
for _, cert := range oAuthClientCertCAs {
genericConfig.SecureServingInfo.ClientCA.AddCert(cert)
}
url, err := url.Parse(masterConfig.MasterPublicURL)
if err != nil {
glog.Fatalf("Error parsing master public url %q: %v", masterConfig.MasterPublicURL, err)
}
genericConfig.ExternalAddress = url.Host
originLongRunningRequestRE := regexp.MustCompile(originLongRunningEndpointsRE)
kubeLongRunningFunc := kgenericfilters.BasicLongRunningRequestCheck(
sets.NewString("watch", "proxy"),
sets.NewString("attach", "exec", "proxy", "log", "portforward"),
)
genericConfig.LongRunningFunc = func(r *http.Request, requestInfo *apirequest.RequestInfo) bool {
return originLongRunningRequestRE.MatchString(r.URL.Path) || kubeLongRunningFunc(r, requestInfo)
}
if apiserverOptions.Etcd.EnableWatchCache {
glog.V(2).Infof("Initializing cache sizes based on %dMB limit", apiserverOptions.GenericServerRunOptions.TargetRAMMB)
sizes := cachesize.NewHeuristicWatchCacheSizes(apiserverOptions.GenericServerRunOptions.TargetRAMMB)
if userSpecified, err := genericoptions.ParseWatchCacheSizes(apiserverOptions.Etcd.WatchCacheSizes); err == nil {
for resource, size := range userSpecified {
sizes[resource] = size
}
}
apiserverOptions.Etcd.WatchCacheSizes, err = genericoptions.WriteWatchCacheSizes(sizes)
if err != nil {
return nil, err
}
}
if err := apiserverOptions.Etcd.ApplyWithStorageFactoryTo(storageFactory, genericConfig); err != nil {
return nil, err
}
// we don't use legacy audit anymore
genericConfig.LegacyAuditWriter = nil
backend, policyChecker, err := GetAuditConfig(masterConfig.AuditConfig)
if err != nil {
return nil, err
}
genericConfig.AuditBackend = backend
genericConfig.AuditPolicyChecker = policyChecker
kubeApiserverConfig := &master.Config{
GenericConfig: genericConfig,
MasterCount: apiserverOptions.MasterCount,
// Set the TLS options for proxying to pods and services
// Proxying to nodes uses the kubeletClient TLS config (so can provide a different cert, and verify the node hostname)
ProxyTransport: knet.SetTransportDefaults(&http.Transport{
TLSClientConfig: &tls.Config{
// Proxying to pods and services cannot verify hostnames, since they are contacted on randomly allocated IPs
InsecureSkipVerify: true,
Certificates: proxyClientCerts,
},
}),
ClientCARegistrationHook: clientCARegistrationHook,
APIServerServicePort: 443,
ServiceNodePortRange: apiserverOptions.ServiceNodePortRange,
KubernetesServiceNodePort: apiserverOptions.KubernetesServiceNodePort,
ServiceIPRange: apiserverOptions.ServiceClusterIPRange,
StorageFactory: storageFactory,
APIResourceConfigSource: getAPIResourceConfig(masterConfig),
EventTTL: apiserverOptions.EventTTL,
KubeletClientConfig: *configapi.GetKubeletClientConfig(masterConfig),
EnableLogsSupport: false, // don't expose server logs
EnableCoreControllers: true,
}
if kubeApiserverConfig.EnableCoreControllers {
ttl := masterConfig.KubernetesMasterConfig.MasterEndpointReconcileTTL
interval := ttl * 2 / 3
glog.V(2).Infof("Using the lease endpoint reconciler with TTL=%ds and interval=%ds", ttl, interval)
config, err := kubeApiserverConfig.StorageFactory.NewConfig(kapi.Resource("apiServerIPInfo"))
if err != nil {
return nil, err
}
leaseStorage, _, err := storagefactory.Create(*config)
if err != nil {
return nil, err
}
masterLeases := newMasterLeases(leaseStorage, ttl)
endpointConfig, err := kubeApiserverConfig.StorageFactory.NewConfig(kapi.Resource("endpoints"))
if err != nil {
return nil, err
}
endpointsStorage := endpointsstorage.NewREST(generic.RESTOptions{
StorageConfig: endpointConfig,
Decorator: generic.UndecoratedStorage,
DeleteCollectionWorkers: 0,
ResourcePrefix: kubeApiserverConfig.StorageFactory.ResourcePrefix(kapi.Resource("endpoints")),
})
endpointRegistry := endpoint.NewRegistry(endpointsStorage)
kubeApiserverConfig.EndpointReconcilerConfig = master.EndpointReconcilerConfig{
Reconciler: election.NewLeaseEndpointReconciler(endpointRegistry, masterLeases),
Interval: time.Duration(interval) * time.Second,
}
}
if masterConfig.DNSConfig != nil {
_, dnsPortStr, err := net.SplitHostPort(masterConfig.DNSConfig.BindAddress)
if err != nil {
return nil, fmt.Errorf("unable to parse DNS bind address %s: %v", masterConfig.DNSConfig.BindAddress, err)
}
dnsPort, err := strconv.Atoi(dnsPortStr)
if err != nil {
return nil, fmt.Errorf("invalid DNS port: %v", err)
}
kubeApiserverConfig.ExtraServicePorts = append(kubeApiserverConfig.ExtraServicePorts,
kapi.ServicePort{Name: "dns", Port: 53, Protocol: kapi.ProtocolUDP, TargetPort: intstr.FromInt(dnsPort)},
kapi.ServicePort{Name: "dns-tcp", Port: 53, Protocol: kapi.ProtocolTCP, TargetPort: intstr.FromInt(dnsPort)},
)
kubeApiserverConfig.ExtraEndpointPorts = append(kubeApiserverConfig.ExtraEndpointPorts,
kapi.EndpointPort{Name: "dns", Port: int32(dnsPort), Protocol: kapi.ProtocolUDP},
kapi.EndpointPort{Name: "dns-tcp", Port: int32(dnsPort), Protocol: kapi.ProtocolTCP},
)
}
return kubeApiserverConfig, nil
}
// TODO this function's parameters need to be refactored
func BuildKubernetesMasterConfig(
masterConfig configapi.MasterConfig,
admissionControl admission.Interface,
originAuthenticator authenticator.Request,
kubeAuthorizer authorizer.Authorizer,
clientGoInformers kubeclientgoinformers.SharedInformerFactory,
) (*master.Config, error) {
apiserverConfig, err := buildKubeApiserverConfig(
masterConfig,
admissionControl,
originAuthenticator,
kubeAuthorizer,
clientGoInformers)
if err != nil {
return nil, err
}
// we do this for integration tests to be able to turn it off for better startup speed
// TODO remove the entire option once openapi is faster
if masterConfig.DisableOpenAPI {
apiserverConfig.GenericConfig.OpenAPIConfig = nil
}
return apiserverConfig, nil
}
func defaultOpenAPIConfig(config configapi.MasterConfig) *openapicommon.Config {
securityDefinitions := spec.SecurityDefinitions{}
if len(config.ServiceAccountConfig.PublicKeyFiles) > 0 {
securityDefinitions["BearerToken"] = &spec.SecurityScheme{
SecuritySchemeProps: spec.SecuritySchemeProps{
Type: "apiKey",
Name: "authorization",
In: "header",
Description: "Bearer Token authentication",
},
}
}
if config.OAuthConfig != nil {
baseUrl := config.OAuthConfig.MasterPublicURL
securityDefinitions["Oauth2Implicit"] = &spec.SecurityScheme{
SecuritySchemeProps: spec.SecuritySchemeProps{
Type: "oauth2",
Flow: "implicit",
AuthorizationURL: oauthutil.OpenShiftOAuthAuthorizeURL(baseUrl),
Scopes: scope.DefaultSupportedScopesMap(),
},
}
securityDefinitions["Oauth2AccessToken"] = &spec.SecurityScheme{
SecuritySchemeProps: spec.SecuritySchemeProps{
Type: "oauth2",
Flow: "accessCode",
AuthorizationURL: oauthutil.OpenShiftOAuthAuthorizeURL(baseUrl),
TokenURL: oauthutil.OpenShiftOAuthTokenURL(baseUrl),
Scopes: scope.DefaultSupportedScopesMap(),
},
}
}
defNamer := apiserverendpointsopenapi.NewDefinitionNamer(kapi.Scheme)
return &openapicommon.Config{
ProtocolList: []string{"https"},
GetDefinitions: openapigenerated.GetOpenAPIDefinitions,
IgnorePrefixes: []string{"/swaggerapi", "/healthz", "/controllers", "/metrics", "/version/openshift", "/brokers"},
GetDefinitionName: defNamer.GetDefinitionName,
GetOperationIDAndTags: func(r *restful.Route) (string, []string, error) {
op := r.Operation
path := r.Path
// DEPRECATED: These endpoints are going to be removed in 1.8 or 1.9 release.
if strings.HasPrefix(path, "/oapi/v1/namespaces/{namespace}/processedtemplates") {
op = "createNamespacedProcessedTemplate"
} else if strings.HasPrefix(path, "/apis/template.openshift.io/v1/namespaces/{namespace}/processedtemplates") {
op = "createNamespacedProcessedTemplateV1"
} else if strings.HasPrefix(path, "/oapi/v1/processedtemplates") {
op = "createProcessedTemplateForAllNamespacesV1"
} else if strings.HasPrefix(path, "/apis/template.openshift.io/v1/processedtemplates") {
op = "createProcessedTemplateForAllNamespaces"
}
if op != r.Operation {
return op, []string{}, nil
}
return apiserverendpointsopenapi.GetOperationIDAndTags(r)
},
Info: &spec.Info{
InfoProps: spec.InfoProps{
Title: "OpenShift API (with Kubernetes)",
Version: version.Get().String(),
License: &spec.License{
Name: "Apache 2.0 (ASL2.0)",
URL: "http://www.apache.org/licenses/LICENSE-2.0",
},
Description: heredoc.Doc(`
OpenShift provides builds, application lifecycle, image content management,
and administrative policy on top of Kubernetes. The API allows consistent
management of those objects.
All API operations are authenticated via an Authorization bearer token that
is provided for service accounts as a generated secret (in JWT form) or via
the native OAuth endpoint located at /oauth/authorize. Core infrastructure
components may use client certificates that require no authentication.
All API operations return a 'resourceVersion' string that represents the
version of the object in the underlying storage. The standard LIST operation
performs a snapshot read of the underlying objects, returning a resourceVersion
representing a consistent version of the listed objects. The WATCH operation
allows all updates to a set of objects after the provided resourceVersion to
be observed by a client. By listing and beginning a watch from the returned
resourceVersion, clients may observe a consistent view of the state of one
or more objects. Note that WATCH always returns the update after the provided
resourceVersion. Watch may be extended a limited time in the past - using
etcd 2 the watch window is 1000 events (which on a large cluster may only
be a few tens of seconds) so clients must explicitly handle the "watch
to old error" by re-listing.
Objects are divided into two rough categories - those that have a lifecycle
and must reflect the state of the cluster, and those that have no state.
Objects with lifecycle typically have three main sections:
* 'metadata' common to all objects
* a 'spec' that represents the desired state
* a 'status' that represents how much of the desired state is reflected on
the cluster at the current time
Objects that have no state have 'metadata' but may lack a 'spec' or 'status'
section.
Objects are divided into those that are namespace scoped (only exist inside
of a namespace) and those that are cluster scoped (exist outside of
a namespace). A namespace scoped resource will be deleted when the namespace
is deleted and cannot be created if the namespace has not yet been created
or is in the process of deletion. Cluster scoped resources are typically
only accessible to admins - resources like nodes, persistent volumes, and
cluster policy.
All objects have a schema that is a combination of the 'kind' and
'apiVersion' fields. This schema is additive only for any given version -
no backwards incompatible changes are allowed without incrementing the
apiVersion. The server will return and accept a number of standard
responses that share a common schema - for instance, the common
error type is 'metav1.Status' (described below) and will be returned
on any error from the API server.
The API is available in multiple serialization formats - the default is
JSON (Accept: application/json and Content-Type: application/json) but
clients may also use YAML (application/yaml) or the native Protobuf
schema (application/vnd.kubernetes.protobuf). Note that the format
of the WATCH API call is slightly different - for JSON it returns newline
delimited objects while for Protobuf it returns length-delimited frames
(4 bytes in network-order) that contain a 'versioned.Watch' Protobuf
object.
See the OpenShift documentation at https://docs.openshift.org for more
information.
`),
},
},
DefaultResponse: &spec.Response{
ResponseProps: spec.ResponseProps{
Description: "Default Response.",
},
},
SecurityDefinitions: &securityDefinitions,
}
}
// getAPIResourceConfig builds the config for enabling resources
func getAPIResourceConfig(options configapi.MasterConfig) apiserverstorage.APIResourceConfigSource {
resourceConfig := apiserverstorage.NewResourceConfig()
for group := range configapi.KnownKubeAPIGroups {
for _, version := range configapi.GetEnabledAPIVersionsForGroup(*options.KubernetesMasterConfig, group) {
gv := schema.GroupVersion{Group: group, Version: version}
resourceConfig.EnableVersions(gv)
}
}
for group := range options.KubernetesMasterConfig.DisabledAPIGroupVersions {
for _, version := range configapi.GetDisabledAPIVersionsForGroup(*options.KubernetesMasterConfig, group) {
gv := schema.GroupVersion{Group: group, Version: version}
resourceConfig.DisableVersions(gv)
}
}
return resourceConfig
}
func readCAorNil(file string) ([]byte, error) {
if len(file) == 0 {
return nil, nil
}
return ioutil.ReadFile(file)
}
func newMasterLeases(storage storage.Interface, masterEndpointReconcileTTL int) election.Leases {
return election.NewLeases(storage, "/masterleases/", uint64(masterEndpointReconcileTTL))
}
func openshiftRequestInfoResolver(requestContextMapper apirequest.RequestContextMapper) apirequest.RequestInfoResolver {
// Default API request info factory
requestInfoFactory := &apirequest.RequestInfoFactory{APIPrefixes: sets.NewString("api", "osapi", "oapi", "apis"), GrouplessAPIPrefixes: sets.NewString("api", "osapi", "oapi")}
// Wrap with a request info factory that detects unsafe requests and modifies verbs/resources appropriately so policy can address them separately
browserSafeRequestInfoResolver := oauthorizer.NewBrowserSafeRequestInfoResolver(
requestContextMapper,
sets.NewString(bootstrappolicy.AuthenticatedGroup),
requestInfoFactory,
)
personalSARRequestInfoResolver := oauthorizer.NewPersonalSARRequestInfoResolver(browserSafeRequestInfoResolver)
projectRequestInfoResolver := oauthorizer.NewProjectRequestInfoResolver(personalSARRequestInfoResolver)
return projectRequestInfoResolver
}
func GetAuditConfig(auditConfig configapi.AuditConfig) (audit.Backend, auditpolicy.Checker, error) {
if !auditConfig.Enabled {
return nil, nil, nil
}
var (
backend audit.Backend
policyChecker auditpolicy.Checker
writer io.Writer
)
if len(auditConfig.AuditFilePath) > 0 {
writer = &lumberjack.Logger{
Filename: auditConfig.AuditFilePath,
MaxAge: auditConfig.MaximumFileRetentionDays,
MaxBackups: auditConfig.MaximumRetainedFiles,
MaxSize: auditConfig.MaximumFileSizeMegabytes,
}
} else {
// backwards compatible writer to regular log
writer = cmdutil.NewGLogWriterV(0)
}
backend = auditlog.NewBackend(writer, auditlog.FormatLegacy)
policyChecker = auditpolicy.NewChecker(&auditinternal.Policy{
// This is for backwards compatibility maintaining the old visibility, ie. just
// raw overview of the requests comming in.
Rules: []auditinternal.PolicyRule{{Level: auditinternal.LevelMetadata}},
})
// when a policy file is defined we enable the advanced auditing
if auditConfig.PolicyConfiguration != nil || len(auditConfig.PolicyFile) > 0 {
// policy configuration
if auditConfig.PolicyConfiguration == nil {
p, _ := auditpolicy.LoadPolicyFromFile(auditConfig.PolicyFile)
policyChecker = auditpolicy.NewChecker(p)
} else if len(auditConfig.PolicyFile) > 0 {
p := auditConfig.PolicyConfiguration.(*auditinternal.Policy)
policyChecker = auditpolicy.NewChecker(p)
}
// log configuration, only when file path was provided
if len(auditConfig.AuditFilePath) > 0 {
backend = auditlog.NewBackend(writer, string(auditConfig.LogFormat))
}
// webhook configuration, only when config file was provided
if len(auditConfig.WebHookKubeConfig) > 0 {
webhook, err := auditwebhook.NewBackend(auditConfig.WebHookKubeConfig, string(auditConfig.WebHookMode))
if err != nil {
glog.Fatalf("Audit webhook initialization failed: %v", err)
}
backend = audit.Union(backend, webhook)
}
}
return backend, policyChecker, nil
}