mirror of
https://github.com/tailscale/tailscale.git
synced 2024-12-04 23:45:34 +00:00
5ad0dad15e
Fixes #11980 Signed-off-by: Michael Long <michaelongdev@gmail.com>
679 lines
26 KiB
Go
679 lines
26 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
//go:build !plan9
|
|
|
|
// tailscale-operator provides a way to expose services running in a Kubernetes
|
|
// cluster to your Tailnet.
|
|
package main
|
|
|
|
import (
|
|
"context"
|
|
"os"
|
|
"regexp"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/go-logr/zapr"
|
|
"go.uber.org/zap"
|
|
"go.uber.org/zap/zapcore"
|
|
"golang.org/x/oauth2/clientcredentials"
|
|
appsv1 "k8s.io/api/apps/v1"
|
|
corev1 "k8s.io/api/core/v1"
|
|
discoveryv1 "k8s.io/api/discovery/v1"
|
|
networkingv1 "k8s.io/api/networking/v1"
|
|
"k8s.io/apimachinery/pkg/types"
|
|
"k8s.io/client-go/rest"
|
|
"sigs.k8s.io/controller-runtime/pkg/builder"
|
|
"sigs.k8s.io/controller-runtime/pkg/cache"
|
|
"sigs.k8s.io/controller-runtime/pkg/client"
|
|
"sigs.k8s.io/controller-runtime/pkg/client/config"
|
|
"sigs.k8s.io/controller-runtime/pkg/handler"
|
|
logf "sigs.k8s.io/controller-runtime/pkg/log"
|
|
kzap "sigs.k8s.io/controller-runtime/pkg/log/zap"
|
|
"sigs.k8s.io/controller-runtime/pkg/manager"
|
|
"sigs.k8s.io/controller-runtime/pkg/manager/signals"
|
|
"sigs.k8s.io/controller-runtime/pkg/reconcile"
|
|
"tailscale.com/client/tailscale"
|
|
"tailscale.com/hostinfo"
|
|
"tailscale.com/ipn"
|
|
"tailscale.com/ipn/store/kubestore"
|
|
tsapi "tailscale.com/k8s-operator/apis/v1alpha1"
|
|
"tailscale.com/tsnet"
|
|
"tailscale.com/tstime"
|
|
"tailscale.com/types/logger"
|
|
"tailscale.com/version"
|
|
)
|
|
|
|
// Generate Connector and ProxyClass CustomResourceDefinition yamls from their Go types.
|
|
//go:generate go run sigs.k8s.io/controller-tools/cmd/controller-gen crd schemapatch:manifests=./deploy/crds output:dir=./deploy/crds paths=../../k8s-operator/apis/...
|
|
|
|
// Generate static manifests for deploying Tailscale operator on Kubernetes from the operator's Helm chart.
|
|
//go:generate go run tailscale.com/cmd/k8s-operator/generate staticmanifests
|
|
|
|
// Generate CRD docs from the yamls
|
|
//go:generate go run fybrik.io/crdoc --resources=./deploy/crds --output=../../k8s-operator/api.md
|
|
|
|
func main() {
|
|
// Required to use our client API. We're fine with the instability since the
|
|
// client lives in the same repo as this code.
|
|
tailscale.I_Acknowledge_This_API_Is_Unstable = true
|
|
|
|
var (
|
|
tsNamespace = defaultEnv("OPERATOR_NAMESPACE", "")
|
|
tslogging = defaultEnv("OPERATOR_LOGGING", "info")
|
|
image = defaultEnv("PROXY_IMAGE", "tailscale/tailscale:latest")
|
|
priorityClassName = defaultEnv("PROXY_PRIORITY_CLASS_NAME", "")
|
|
tags = defaultEnv("PROXY_TAGS", "tag:k8s")
|
|
tsFirewallMode = defaultEnv("PROXY_FIREWALL_MODE", "")
|
|
isDefaultLoadBalancer = defaultBool("OPERATOR_DEFAULT_LOAD_BALANCER", false)
|
|
)
|
|
|
|
var opts []kzap.Opts
|
|
switch tslogging {
|
|
case "info":
|
|
opts = append(opts, kzap.Level(zapcore.InfoLevel))
|
|
case "debug":
|
|
opts = append(opts, kzap.Level(zapcore.DebugLevel))
|
|
case "dev":
|
|
opts = append(opts, kzap.UseDevMode(true), kzap.Level(zapcore.DebugLevel))
|
|
}
|
|
zlog := kzap.NewRaw(opts...).Sugar()
|
|
logf.SetLogger(zapr.NewLogger(zlog.Desugar()))
|
|
|
|
// The operator can run either as a plain operator or it can
|
|
// additionally act as api-server proxy
|
|
// https://tailscale.com/kb/1236/kubernetes-operator/?q=kubernetes#accessing-the-kubernetes-control-plane-using-an-api-server-proxy.
|
|
mode := parseAPIProxyMode()
|
|
if mode == apiserverProxyModeDisabled {
|
|
hostinfo.SetApp("k8s-operator")
|
|
} else {
|
|
hostinfo.SetApp("k8s-operator-proxy")
|
|
}
|
|
|
|
s, tsClient := initTSNet(zlog)
|
|
defer s.Close()
|
|
restConfig := config.GetConfigOrDie()
|
|
maybeLaunchAPIServerProxy(zlog, restConfig, s, mode)
|
|
rOpts := reconcilerOpts{
|
|
log: zlog,
|
|
tsServer: s,
|
|
tsClient: tsClient,
|
|
tailscaleNamespace: tsNamespace,
|
|
restConfig: restConfig,
|
|
proxyImage: image,
|
|
proxyPriorityClassName: priorityClassName,
|
|
proxyActAsDefaultLoadBalancer: isDefaultLoadBalancer,
|
|
proxyTags: tags,
|
|
proxyFirewallMode: tsFirewallMode,
|
|
}
|
|
runReconcilers(rOpts)
|
|
}
|
|
|
|
// initTSNet initializes the tsnet.Server and logs in to Tailscale. It uses the
|
|
// CLIENT_ID_FILE and CLIENT_SECRET_FILE environment variables to authenticate
|
|
// with Tailscale.
|
|
func initTSNet(zlog *zap.SugaredLogger) (*tsnet.Server, *tailscale.Client) {
|
|
var (
|
|
clientIDPath = defaultEnv("CLIENT_ID_FILE", "")
|
|
clientSecretPath = defaultEnv("CLIENT_SECRET_FILE", "")
|
|
hostname = defaultEnv("OPERATOR_HOSTNAME", "tailscale-operator")
|
|
kubeSecret = defaultEnv("OPERATOR_SECRET", "")
|
|
operatorTags = defaultEnv("OPERATOR_INITIAL_TAGS", "tag:k8s-operator")
|
|
)
|
|
startlog := zlog.Named("startup")
|
|
if clientIDPath == "" || clientSecretPath == "" {
|
|
startlog.Fatalf("CLIENT_ID_FILE and CLIENT_SECRET_FILE must be set")
|
|
}
|
|
clientID, err := os.ReadFile(clientIDPath)
|
|
if err != nil {
|
|
startlog.Fatalf("reading client ID %q: %v", clientIDPath, err)
|
|
}
|
|
clientSecret, err := os.ReadFile(clientSecretPath)
|
|
if err != nil {
|
|
startlog.Fatalf("reading client secret %q: %v", clientSecretPath, err)
|
|
}
|
|
credentials := clientcredentials.Config{
|
|
ClientID: string(clientID),
|
|
ClientSecret: string(clientSecret),
|
|
TokenURL: "https://login.tailscale.com/api/v2/oauth/token",
|
|
}
|
|
tsClient := tailscale.NewClient("-", nil)
|
|
tsClient.HTTPClient = credentials.Client(context.Background())
|
|
|
|
s := &tsnet.Server{
|
|
Hostname: hostname,
|
|
Logf: zlog.Named("tailscaled").Debugf,
|
|
}
|
|
if kubeSecret != "" {
|
|
st, err := kubestore.New(logger.Discard, kubeSecret)
|
|
if err != nil {
|
|
startlog.Fatalf("creating kube store: %v", err)
|
|
}
|
|
s.Store = st
|
|
}
|
|
if err := s.Start(); err != nil {
|
|
startlog.Fatalf("starting tailscale server: %v", err)
|
|
}
|
|
lc, err := s.LocalClient()
|
|
if err != nil {
|
|
startlog.Fatalf("getting local client: %v", err)
|
|
}
|
|
|
|
ctx := context.Background()
|
|
loginDone := false
|
|
machineAuthShown := false
|
|
waitOnline:
|
|
for {
|
|
startlog.Debugf("querying tailscaled status")
|
|
st, err := lc.StatusWithoutPeers(ctx)
|
|
if err != nil {
|
|
startlog.Fatalf("getting status: %v", err)
|
|
}
|
|
switch st.BackendState {
|
|
case "Running":
|
|
break waitOnline
|
|
case "NeedsLogin":
|
|
if loginDone {
|
|
break
|
|
}
|
|
caps := tailscale.KeyCapabilities{
|
|
Devices: tailscale.KeyDeviceCapabilities{
|
|
Create: tailscale.KeyDeviceCreateCapabilities{
|
|
Reusable: false,
|
|
Preauthorized: true,
|
|
Tags: strings.Split(operatorTags, ","),
|
|
},
|
|
},
|
|
}
|
|
authkey, _, err := tsClient.CreateKey(ctx, caps)
|
|
if err != nil {
|
|
startlog.Fatalf("creating operator authkey: %v", err)
|
|
}
|
|
if err := lc.Start(ctx, ipn.Options{
|
|
AuthKey: authkey,
|
|
}); err != nil {
|
|
startlog.Fatalf("starting tailscale: %v", err)
|
|
}
|
|
if err := lc.StartLoginInteractive(ctx); err != nil {
|
|
startlog.Fatalf("starting login: %v", err)
|
|
}
|
|
startlog.Debugf("requested login by authkey")
|
|
loginDone = true
|
|
case "NeedsMachineAuth":
|
|
if !machineAuthShown {
|
|
startlog.Infof("Machine approval required, please visit the admin panel to approve")
|
|
machineAuthShown = true
|
|
}
|
|
default:
|
|
startlog.Debugf("waiting for tailscale to start: %v", st.BackendState)
|
|
}
|
|
time.Sleep(time.Second)
|
|
}
|
|
return s, tsClient
|
|
}
|
|
|
|
// runReconcilers starts the controller-runtime manager and registers the
|
|
// ServiceReconciler. It blocks forever.
|
|
func runReconcilers(opts reconcilerOpts) {
|
|
startlog := opts.log.Named("startReconcilers")
|
|
// For secrets and statefulsets, we only get permission to touch the objects
|
|
// in the controller's own namespace. This cannot be expressed by
|
|
// .Watches(...) below, instead you have to add a per-type field selector to
|
|
// the cache that sits a few layers below the builder stuff, which will
|
|
// implicitly filter what parts of the world the builder code gets to see at
|
|
// all.
|
|
nsFilter := cache.ByObject{
|
|
Field: client.InNamespace(opts.tailscaleNamespace).AsSelector(),
|
|
}
|
|
mgrOpts := manager.Options{
|
|
// TODO (irbekrm): stricter filtering what we watch/cache/call
|
|
// reconcilers on. c/r by default starts a watch on any
|
|
// resources that we GET via the controller manager's client.
|
|
Cache: cache.Options{
|
|
ByObject: map[client.Object]cache.ByObject{
|
|
&corev1.Secret{}: nsFilter,
|
|
&corev1.ServiceAccount{}: nsFilter,
|
|
&corev1.ConfigMap{}: nsFilter,
|
|
&appsv1.StatefulSet{}: nsFilter,
|
|
&appsv1.Deployment{}: nsFilter,
|
|
&discoveryv1.EndpointSlice{}: nsFilter,
|
|
},
|
|
},
|
|
Scheme: tsapi.GlobalScheme,
|
|
}
|
|
mgr, err := manager.New(opts.restConfig, mgrOpts)
|
|
if err != nil {
|
|
startlog.Fatalf("could not create manager: %v", err)
|
|
}
|
|
|
|
svcFilter := handler.EnqueueRequestsFromMapFunc(serviceHandler)
|
|
svcChildFilter := handler.EnqueueRequestsFromMapFunc(managedResourceHandlerForType("svc"))
|
|
// If a ProxyClass changes, enqueue all Services labeled with that
|
|
// ProxyClass's name.
|
|
proxyClassFilterForSvc := handler.EnqueueRequestsFromMapFunc(proxyClassHandlerForSvc(mgr.GetClient(), startlog))
|
|
|
|
eventRecorder := mgr.GetEventRecorderFor("tailscale-operator")
|
|
ssr := &tailscaleSTSReconciler{
|
|
Client: mgr.GetClient(),
|
|
tsnetServer: opts.tsServer,
|
|
tsClient: opts.tsClient,
|
|
defaultTags: strings.Split(opts.proxyTags, ","),
|
|
operatorNamespace: opts.tailscaleNamespace,
|
|
proxyImage: opts.proxyImage,
|
|
proxyPriorityClassName: opts.proxyPriorityClassName,
|
|
tsFirewallMode: opts.proxyFirewallMode,
|
|
}
|
|
err = builder.
|
|
ControllerManagedBy(mgr).
|
|
Named("service-reconciler").
|
|
Watches(&corev1.Service{}, svcFilter).
|
|
Watches(&appsv1.StatefulSet{}, svcChildFilter).
|
|
Watches(&corev1.Secret{}, svcChildFilter).
|
|
Watches(&tsapi.ProxyClass{}, proxyClassFilterForSvc).
|
|
Complete(&ServiceReconciler{
|
|
ssr: ssr,
|
|
Client: mgr.GetClient(),
|
|
logger: opts.log.Named("service-reconciler"),
|
|
isDefaultLoadBalancer: opts.proxyActAsDefaultLoadBalancer,
|
|
recorder: eventRecorder,
|
|
tsNamespace: opts.tailscaleNamespace,
|
|
})
|
|
if err != nil {
|
|
startlog.Fatalf("could not create service reconciler: %v", err)
|
|
}
|
|
ingressChildFilter := handler.EnqueueRequestsFromMapFunc(managedResourceHandlerForType("ingress"))
|
|
// If a ProxyClassChanges, enqueue all Ingresses labeled with that
|
|
// ProxyClass's name.
|
|
proxyClassFilterForIngress := handler.EnqueueRequestsFromMapFunc(proxyClassHandlerForIngress(mgr.GetClient(), startlog))
|
|
// Enque Ingress if a managed Service or backend Service associated with a tailscale Ingress changes.
|
|
svcHandlerForIngress := handler.EnqueueRequestsFromMapFunc(serviceHandlerForIngress(mgr.GetClient(), startlog))
|
|
err = builder.
|
|
ControllerManagedBy(mgr).
|
|
For(&networkingv1.Ingress{}).
|
|
Watches(&appsv1.StatefulSet{}, ingressChildFilter).
|
|
Watches(&corev1.Secret{}, ingressChildFilter).
|
|
Watches(&corev1.Service{}, svcHandlerForIngress).
|
|
Watches(&tsapi.ProxyClass{}, proxyClassFilterForIngress).
|
|
Complete(&IngressReconciler{
|
|
ssr: ssr,
|
|
recorder: eventRecorder,
|
|
Client: mgr.GetClient(),
|
|
logger: opts.log.Named("ingress-reconciler"),
|
|
})
|
|
if err != nil {
|
|
startlog.Fatalf("could not create ingress reconciler: %v", err)
|
|
}
|
|
|
|
connectorFilter := handler.EnqueueRequestsFromMapFunc(managedResourceHandlerForType("connector"))
|
|
// If a ProxyClassChanges, enqueue all Connectors that have
|
|
// .spec.proxyClass set to the name of this ProxyClass.
|
|
proxyClassFilterForConnector := handler.EnqueueRequestsFromMapFunc(proxyClassHandlerForConnector(mgr.GetClient(), startlog))
|
|
err = builder.ControllerManagedBy(mgr).
|
|
For(&tsapi.Connector{}).
|
|
Watches(&appsv1.StatefulSet{}, connectorFilter).
|
|
Watches(&corev1.Secret{}, connectorFilter).
|
|
Watches(&tsapi.ProxyClass{}, proxyClassFilterForConnector).
|
|
Complete(&ConnectorReconciler{
|
|
ssr: ssr,
|
|
recorder: eventRecorder,
|
|
Client: mgr.GetClient(),
|
|
logger: opts.log.Named("connector-reconciler"),
|
|
clock: tstime.DefaultClock{},
|
|
})
|
|
if err != nil {
|
|
startlog.Fatalf("could not create connector reconciler: %v", err)
|
|
}
|
|
// TODO (irbekrm): switch to metadata-only watches for resources whose
|
|
// spec we don't need to inspect to reduce memory consumption.
|
|
// https://github.com/kubernetes-sigs/controller-runtime/issues/1159
|
|
nameserverFilter := handler.EnqueueRequestsFromMapFunc(managedResourceHandlerForType("nameserver"))
|
|
err = builder.ControllerManagedBy(mgr).
|
|
For(&tsapi.DNSConfig{}).
|
|
Watches(&appsv1.Deployment{}, nameserverFilter).
|
|
Watches(&corev1.ConfigMap{}, nameserverFilter).
|
|
Watches(&corev1.Service{}, nameserverFilter).
|
|
Watches(&corev1.ServiceAccount{}, nameserverFilter).
|
|
Complete(&NameserverReconciler{
|
|
recorder: eventRecorder,
|
|
tsNamespace: opts.tailscaleNamespace,
|
|
Client: mgr.GetClient(),
|
|
logger: opts.log.Named("nameserver-reconciler"),
|
|
clock: tstime.DefaultClock{},
|
|
})
|
|
if err != nil {
|
|
startlog.Fatalf("could not create nameserver reconciler: %v", err)
|
|
}
|
|
err = builder.ControllerManagedBy(mgr).
|
|
For(&tsapi.ProxyClass{}).
|
|
Complete(&ProxyClassReconciler{
|
|
Client: mgr.GetClient(),
|
|
recorder: eventRecorder,
|
|
logger: opts.log.Named("proxyclass-reconciler"),
|
|
clock: tstime.DefaultClock{},
|
|
})
|
|
if err != nil {
|
|
startlog.Fatal("could not create proxyclass reconciler: %v", err)
|
|
}
|
|
logger := startlog.Named("dns-records-reconciler-event-handlers")
|
|
// On EndpointSlice events, if it is an EndpointSlice for an
|
|
// ingress/egress proxy headless Service, reconcile the headless
|
|
// Service.
|
|
dnsRREpsOpts := handler.EnqueueRequestsFromMapFunc(dnsRecordsReconcilerEndpointSliceHandler)
|
|
// On DNSConfig changes, reconcile all headless Services for
|
|
// ingress/egress proxies in operator namespace.
|
|
dnsRRDNSConfigOpts := handler.EnqueueRequestsFromMapFunc(enqueueAllIngressEgressProxySvcsInNS(opts.tailscaleNamespace, mgr.GetClient(), logger))
|
|
// On Service events, if it is an ingress/egress proxy headless Service, reconcile it.
|
|
dnsRRServiceOpts := handler.EnqueueRequestsFromMapFunc(dnsRecordsReconcilerServiceHandler)
|
|
// On Ingress events, if it is a tailscale Ingress or if tailscale is the default ingress controller, reconcile the proxy
|
|
// headless Service.
|
|
dnsRRIngressOpts := handler.EnqueueRequestsFromMapFunc(dnsRecordsReconcilerIngressHandler(opts.tailscaleNamespace, opts.proxyActAsDefaultLoadBalancer, mgr.GetClient(), logger))
|
|
err = builder.ControllerManagedBy(mgr).
|
|
Named("dns-records-reconciler").
|
|
Watches(&corev1.Service{}, dnsRRServiceOpts).
|
|
Watches(&networkingv1.Ingress{}, dnsRRIngressOpts).
|
|
Watches(&discoveryv1.EndpointSlice{}, dnsRREpsOpts).
|
|
Watches(&tsapi.DNSConfig{}, dnsRRDNSConfigOpts).
|
|
Complete(&dnsRecordsReconciler{
|
|
Client: mgr.GetClient(),
|
|
tsNamespace: opts.tailscaleNamespace,
|
|
logger: opts.log.Named("dns-records-reconciler"),
|
|
isDefaultLoadBalancer: opts.proxyActAsDefaultLoadBalancer,
|
|
})
|
|
if err != nil {
|
|
startlog.Fatalf("could not create DNS records reconciler: %v", err)
|
|
}
|
|
startlog.Infof("Startup complete, operator running, version: %s", version.Long())
|
|
if err := mgr.Start(signals.SetupSignalHandler()); err != nil {
|
|
startlog.Fatalf("could not start manager: %v", err)
|
|
}
|
|
}
|
|
|
|
type reconcilerOpts struct {
|
|
log *zap.SugaredLogger
|
|
tsServer *tsnet.Server
|
|
tsClient *tailscale.Client
|
|
tailscaleNamespace string // namespace in which operator resources will be deployed
|
|
restConfig *rest.Config // config for connecting to the kube API server
|
|
proxyImage string // <proxy-image-repo>:<proxy-image-tag>
|
|
// proxyPriorityClassName isPriorityClass to be set for proxy Pods. This
|
|
// is a legacy mechanism for cluster resource configuration options -
|
|
// going forward use ProxyClass.
|
|
// https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/#priorityclass
|
|
proxyPriorityClassName string
|
|
// proxyTags are ACL tags to tag proxy auth keys. Multiple tags should
|
|
// be provided as a string with comma-separated tag values. Proxy tags
|
|
// default to tag:k8s.
|
|
// https://tailscale.com/kb/1085/auth-keys
|
|
proxyTags string
|
|
// proxyActAsDefaultLoadBalancer determines whether this operator
|
|
// instance should act as the default ingress controller when looking at
|
|
// Ingress resources with unset ingress.spec.ingressClassName.
|
|
// TODO (irbekrm): this setting does not respect the default
|
|
// IngressClass.
|
|
// https://kubernetes.io/docs/concepts/services-networking/ingress/#default-ingress-class
|
|
// We should fix that and preferably integrate with that mechanism as
|
|
// well - perhaps make the operator itself create the default
|
|
// IngressClass if this is set to true.
|
|
proxyActAsDefaultLoadBalancer bool
|
|
// proxyFirewallMode determines whether non-userspace proxies should use
|
|
// iptables or nftables for firewall configuration. Accepted values are
|
|
// iptables, nftables and auto. If set to auto, proxy will automatically
|
|
// determine which mode is supported for a given host (prefer nftables).
|
|
// Auto is usually the best choice, unless you want to explicitly set
|
|
// specific mode for debugging purposes.
|
|
proxyFirewallMode string
|
|
}
|
|
|
|
// enqueueAllIngressEgressProxySvcsinNS returns a reconcile request for each
|
|
// ingress/egress proxy headless Service found in the provided namespace.
|
|
func enqueueAllIngressEgressProxySvcsInNS(ns string, cl client.Client, logger *zap.SugaredLogger) handler.MapFunc {
|
|
return func(ctx context.Context, _ client.Object) []reconcile.Request {
|
|
reqs := make([]reconcile.Request, 0)
|
|
|
|
// Get all headless Services for proxies configured using Service.
|
|
svcProxyLabels := map[string]string{
|
|
LabelManaged: "true",
|
|
LabelParentType: "svc",
|
|
}
|
|
svcHeadlessSvcList := &corev1.ServiceList{}
|
|
if err := cl.List(ctx, svcHeadlessSvcList, client.InNamespace(ns), client.MatchingLabels(svcProxyLabels)); err != nil {
|
|
logger.Errorf("error listing headless Services for tailscale ingress/egress Services in operator namespace: %v", err)
|
|
return nil
|
|
}
|
|
for _, svc := range svcHeadlessSvcList.Items {
|
|
reqs = append(reqs, reconcile.Request{NamespacedName: types.NamespacedName{Namespace: svc.Namespace, Name: svc.Name}})
|
|
}
|
|
|
|
// Get all headless Services for proxies configured using Ingress.
|
|
ingProxyLabels := map[string]string{
|
|
LabelManaged: "true",
|
|
LabelParentType: "ingress",
|
|
}
|
|
ingHeadlessSvcList := &corev1.ServiceList{}
|
|
if err := cl.List(ctx, ingHeadlessSvcList, client.InNamespace(ns), client.MatchingLabels(ingProxyLabels)); err != nil {
|
|
logger.Errorf("error listing headless Services for tailscale Ingresses in operator namespace: %v", err)
|
|
return nil
|
|
}
|
|
for _, svc := range ingHeadlessSvcList.Items {
|
|
reqs = append(reqs, reconcile.Request{NamespacedName: types.NamespacedName{Namespace: svc.Namespace, Name: svc.Name}})
|
|
}
|
|
return reqs
|
|
}
|
|
}
|
|
|
|
// dnsRecordsReconciler filters EndpointSlice events for which
|
|
// dns-records-reconciler should reconcile a headless Service. The only events
|
|
// it should reconcile are those for EndpointSlices associated with proxy
|
|
// headless Services.
|
|
func dnsRecordsReconcilerEndpointSliceHandler(ctx context.Context, o client.Object) []reconcile.Request {
|
|
if !isManagedByType(o, "svc") && !isManagedByType(o, "ingress") {
|
|
return nil
|
|
}
|
|
headlessSvcName, ok := o.GetLabels()[discoveryv1.LabelServiceName] // https://kubernetes.io/docs/concepts/services-networking/endpoint-slices/#ownership
|
|
if !ok {
|
|
return nil
|
|
}
|
|
return []reconcile.Request{{NamespacedName: types.NamespacedName{Namespace: o.GetNamespace(), Name: headlessSvcName}}}
|
|
}
|
|
|
|
// dnsRecordsReconcilerServiceHandler filters Service events for which
|
|
// dns-records-reconciler should reconcile. If the event is for a cluster
|
|
// ingress/cluster egress proxy's headless Service, returns the Service for
|
|
// reconcile.
|
|
func dnsRecordsReconcilerServiceHandler(ctx context.Context, o client.Object) []reconcile.Request {
|
|
if isManagedByType(o, "svc") || isManagedByType(o, "ingress") {
|
|
return []reconcile.Request{{NamespacedName: types.NamespacedName{Namespace: o.GetNamespace(), Name: o.GetName()}}}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// dnsRecordsReconcilerIngressHandler filters Ingress events to ensure that
|
|
// dns-records-reconciler only reconciles on tailscale Ingress events. When an
|
|
// event is observed on a tailscale Ingress, reconcile the proxy headless Service.
|
|
func dnsRecordsReconcilerIngressHandler(ns string, isDefaultLoadBalancer bool, cl client.Client, logger *zap.SugaredLogger) handler.MapFunc {
|
|
return func(ctx context.Context, o client.Object) []reconcile.Request {
|
|
ing, ok := o.(*networkingv1.Ingress)
|
|
if !ok {
|
|
return nil
|
|
}
|
|
if !isDefaultLoadBalancer && (ing.Spec.IngressClassName == nil || *ing.Spec.IngressClassName != "tailscale") {
|
|
return nil
|
|
}
|
|
proxyResourceLabels := childResourceLabels(ing.Name, ing.Namespace, "ingress")
|
|
headlessSvc, err := getSingleObject[corev1.Service](ctx, cl, ns, proxyResourceLabels)
|
|
if err != nil {
|
|
logger.Errorf("error getting headless Service from parent labels: %v", err)
|
|
return nil
|
|
}
|
|
if headlessSvc == nil {
|
|
return nil
|
|
}
|
|
return []reconcile.Request{{NamespacedName: types.NamespacedName{Namespace: headlessSvc.Namespace, Name: headlessSvc.Name}}}
|
|
}
|
|
}
|
|
|
|
type tsClient interface {
|
|
CreateKey(ctx context.Context, caps tailscale.KeyCapabilities) (string, *tailscale.Key, error)
|
|
DeleteDevice(ctx context.Context, nodeStableID string) error
|
|
}
|
|
|
|
func isManagedResource(o client.Object) bool {
|
|
ls := o.GetLabels()
|
|
return ls[LabelManaged] == "true"
|
|
}
|
|
|
|
func isManagedByType(o client.Object, typ string) bool {
|
|
ls := o.GetLabels()
|
|
return isManagedResource(o) && ls[LabelParentType] == typ
|
|
}
|
|
|
|
func parentFromObjectLabels(o client.Object) types.NamespacedName {
|
|
ls := o.GetLabels()
|
|
return types.NamespacedName{
|
|
Namespace: ls[LabelParentNamespace],
|
|
Name: ls[LabelParentName],
|
|
}
|
|
}
|
|
|
|
func managedResourceHandlerForType(typ string) handler.MapFunc {
|
|
return func(_ context.Context, o client.Object) []reconcile.Request {
|
|
if !isManagedByType(o, typ) {
|
|
return nil
|
|
}
|
|
return []reconcile.Request{
|
|
{NamespacedName: parentFromObjectLabels(o)},
|
|
}
|
|
}
|
|
}
|
|
|
|
// proxyClassHandlerForSvc returns a handler that, for a given ProxyClass,
|
|
// returns a list of reconcile requests for all Services labeled with
|
|
// tailscale.com/proxy-class: <proxy class name>.
|
|
func proxyClassHandlerForSvc(cl client.Client, logger *zap.SugaredLogger) handler.MapFunc {
|
|
return func(ctx context.Context, o client.Object) []reconcile.Request {
|
|
svcList := new(corev1.ServiceList)
|
|
labels := map[string]string{
|
|
LabelProxyClass: o.GetName(),
|
|
}
|
|
if err := cl.List(ctx, svcList, client.MatchingLabels(labels)); err != nil {
|
|
logger.Debugf("error listing Services for ProxyClass: %v", err)
|
|
return nil
|
|
}
|
|
reqs := make([]reconcile.Request, 0)
|
|
for _, svc := range svcList.Items {
|
|
reqs = append(reqs, reconcile.Request{NamespacedName: client.ObjectKeyFromObject(&svc)})
|
|
}
|
|
return reqs
|
|
}
|
|
}
|
|
|
|
// proxyClassHandlerForIngress returns a handler that, for a given ProxyClass,
|
|
// returns a list of reconcile requests for all Ingresses labeled with
|
|
// tailscale.com/proxy-class: <proxy class name>.
|
|
func proxyClassHandlerForIngress(cl client.Client, logger *zap.SugaredLogger) handler.MapFunc {
|
|
return func(ctx context.Context, o client.Object) []reconcile.Request {
|
|
ingList := new(networkingv1.IngressList)
|
|
labels := map[string]string{
|
|
LabelProxyClass: o.GetName(),
|
|
}
|
|
if err := cl.List(ctx, ingList, client.MatchingLabels(labels)); err != nil {
|
|
logger.Debugf("error listing Ingresses for ProxyClass: %v", err)
|
|
return nil
|
|
}
|
|
reqs := make([]reconcile.Request, 0)
|
|
for _, ing := range ingList.Items {
|
|
reqs = append(reqs, reconcile.Request{NamespacedName: client.ObjectKeyFromObject(&ing)})
|
|
}
|
|
return reqs
|
|
}
|
|
}
|
|
|
|
// proxyClassHandlerForConnector returns a handler that, for a given ProxyClass,
|
|
// returns a list of reconcile requests for all Connectors that have
|
|
// .spec.proxyClass set.
|
|
func proxyClassHandlerForConnector(cl client.Client, logger *zap.SugaredLogger) handler.MapFunc {
|
|
return func(ctx context.Context, o client.Object) []reconcile.Request {
|
|
connList := new(tsapi.ConnectorList)
|
|
if err := cl.List(ctx, connList); err != nil {
|
|
logger.Debugf("error listing Connectors for ProxyClass: %v", err)
|
|
return nil
|
|
}
|
|
reqs := make([]reconcile.Request, 0)
|
|
proxyClassName := o.GetName()
|
|
for _, conn := range connList.Items {
|
|
if conn.Spec.ProxyClass == proxyClassName {
|
|
reqs = append(reqs, reconcile.Request{NamespacedName: client.ObjectKeyFromObject(&conn)})
|
|
}
|
|
}
|
|
return reqs
|
|
}
|
|
}
|
|
|
|
// serviceHandlerForIngress returns a handler for Service events for ingress
|
|
// reconciler that ensures that if the Service associated with an event is of
|
|
// interest to the reconciler, the associated Ingress(es) gets be reconciled.
|
|
// The Services of interest are backend Services for tailscale Ingress and
|
|
// managed Services for an StatefulSet for a proxy configured for tailscale
|
|
// Ingress
|
|
func serviceHandlerForIngress(cl client.Client, logger *zap.SugaredLogger) handler.MapFunc {
|
|
return func(ctx context.Context, o client.Object) []reconcile.Request {
|
|
if isManagedByType(o, "ingress") {
|
|
ingName := parentFromObjectLabels(o)
|
|
return []reconcile.Request{{NamespacedName: ingName}}
|
|
}
|
|
ingList := networkingv1.IngressList{}
|
|
if err := cl.List(ctx, &ingList, client.InNamespace(o.GetNamespace())); err != nil {
|
|
logger.Debugf("error listing Ingresses: %v", err)
|
|
return nil
|
|
}
|
|
reqs := make([]reconcile.Request, 0)
|
|
for _, ing := range ingList.Items {
|
|
if ing.Spec.IngressClassName == nil || *ing.Spec.IngressClassName != tailscaleIngressClassName {
|
|
return nil
|
|
}
|
|
if ing.Spec.DefaultBackend != nil && ing.Spec.DefaultBackend.Service != nil && ing.Spec.DefaultBackend.Service.Name == o.GetName() {
|
|
reqs = append(reqs, reconcile.Request{NamespacedName: client.ObjectKeyFromObject(&ing)})
|
|
}
|
|
for _, rule := range ing.Spec.Rules {
|
|
if rule.HTTP == nil {
|
|
continue
|
|
}
|
|
for _, path := range rule.HTTP.Paths {
|
|
if path.Backend.Service != nil && path.Backend.Service.Name == o.GetName() {
|
|
reqs = append(reqs, reconcile.Request{NamespacedName: client.ObjectKeyFromObject(&ing)})
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return reqs
|
|
}
|
|
}
|
|
|
|
func serviceHandler(_ context.Context, o client.Object) []reconcile.Request {
|
|
if isManagedByType(o, "svc") {
|
|
// If this is a Service managed by a Service we want to enqueue its parent
|
|
return []reconcile.Request{{NamespacedName: parentFromObjectLabels(o)}}
|
|
}
|
|
if isManagedResource(o) {
|
|
// If this is a Servce managed by a resource that is not a Service, we leave it alone
|
|
return nil
|
|
}
|
|
// If this is not a managed Service we want to enqueue it
|
|
return []reconcile.Request{
|
|
{
|
|
NamespacedName: types.NamespacedName{
|
|
Namespace: o.GetNamespace(),
|
|
Name: o.GetName(),
|
|
},
|
|
},
|
|
}
|
|
}
|
|
|
|
// isMagicDNSName reports whether name is a full tailnet node FQDN (with or
|
|
// without final dot).
|
|
func isMagicDNSName(name string) bool {
|
|
validMagicDNSName := regexp.MustCompile(`^[a-zA-Z0-9-]+\.[a-zA-Z0-9-]+\.ts\.net\.?$`)
|
|
return validMagicDNSName.MatchString(name)
|
|
}
|