mirror of https://github.com/tailscale/tailscale/
cmd/{containerboot,k8s-operator/deploy/manifests}: optionally allow proxying cluster traffic to a cluster target via ingress proxy (#11036)
* cmd/containerboot,cmd/k8s-operator/deploy/manifests: optionally forward cluster traffic via ingress proxy. If a tailscale Ingress has tailscale.com/experimental-forward-cluster-traffic-via-ingress annotation, configure the associated ingress proxy to have its tailscale serve proxy to listen on Pod's IP address. This ensures that cluster traffic too can be forwarded via this proxy to the ingress backend(s). In containerboot, if EXPERIMENTAL_PROXY_CLUSTER_TRAFFIC_VIA_INGRESS is set to true and the node is Kubernetes operator ingress proxy configured via Ingress, make sure that traffic from within the cluster can be proxied to the ingress target. Updates tailscale/tailscale#10499 Signed-off-by: Irbe Krumina <irbe@tailscale.com>pull/10876/head
Irbe Krumina
3 months ago
committed by
GitHub
parent
2404b1444e
commit
a6cc2fdc3e
@ -0,0 +1,139 @@
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// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build !plan9
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package main
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import (
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"testing"
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"go.uber.org/zap"
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appsv1 "k8s.io/api/apps/v1"
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corev1 "k8s.io/api/core/v1"
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networkingv1 "k8s.io/api/networking/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/types"
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"sigs.k8s.io/controller-runtime/pkg/client/fake"
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"tailscale.com/ipn"
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"tailscale.com/types/ptr"
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"tailscale.com/util/mak"
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)
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func TestTailscaleIngress(t *testing.T) {
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tsIngressClass := &networkingv1.IngressClass{ObjectMeta: metav1.ObjectMeta{Name: "tailscale"}, Spec: networkingv1.IngressClassSpec{Controller: "tailscale.com/ts-ingress"}}
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fc := fake.NewFakeClient(tsIngressClass)
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ft := &fakeTSClient{}
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fakeTsnetServer := &fakeTSNetServer{certDomains: []string{"foo.com"}}
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zl, err := zap.NewDevelopment()
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if err != nil {
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t.Fatal(err)
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}
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ingR := &IngressReconciler{
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Client: fc,
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ssr: &tailscaleSTSReconciler{
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Client: fc,
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tsClient: ft,
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tsnetServer: fakeTsnetServer,
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defaultTags: []string{"tag:k8s"},
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operatorNamespace: "operator-ns",
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proxyImage: "tailscale/tailscale",
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},
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logger: zl.Sugar(),
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}
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// 1. Resources get created for regular Ingress
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ing := &networkingv1.Ingress{
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TypeMeta: metav1.TypeMeta{Kind: "Ingress", APIVersion: "networking.k8s.io/v1"},
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ObjectMeta: metav1.ObjectMeta{
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Name: "test",
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Namespace: "default",
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// The apiserver is supposed to set the UID, but the fake client
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// doesn't. So, set it explicitly because other code later depends
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// on it being set.
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UID: types.UID("1234-UID"),
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},
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Spec: networkingv1.IngressSpec{
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IngressClassName: ptr.To("tailscale"),
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DefaultBackend: &networkingv1.IngressBackend{
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Service: &networkingv1.IngressServiceBackend{
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Name: "test",
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Port: networkingv1.ServiceBackendPort{
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Number: 8080,
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},
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},
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},
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TLS: []networkingv1.IngressTLS{
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{Hosts: []string{"default-test"}},
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},
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},
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}
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mustCreate(t, fc, ing)
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mustCreate(t, fc, &corev1.Service{
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ObjectMeta: metav1.ObjectMeta{
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Name: "test",
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Namespace: "default",
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},
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Spec: corev1.ServiceSpec{
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ClusterIP: "1.2.3.4",
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Ports: []corev1.ServicePort{{
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Port: 8080,
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Name: "http"},
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},
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},
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})
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expectReconciled(t, ingR, "default", "test")
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fullName, shortName := findGenName(t, fc, "default", "test", "ingress")
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opts := configOpts{
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stsName: shortName,
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secretName: fullName,
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namespace: "default",
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parentType: "ingress",
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hostname: "default-test",
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}
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serveConfig := &ipn.ServeConfig{
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TCP: map[uint16]*ipn.TCPPortHandler{443: {HTTPS: true}},
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Web: map[ipn.HostPort]*ipn.WebServerConfig{"${TS_CERT_DOMAIN}:443": {Handlers: map[string]*ipn.HTTPHandler{"/": {Proxy: "http://1.2.3.4:8080/"}}}},
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}
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opts.serveConfig = serveConfig
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expectEqual(t, fc, expectedSecret(t, opts))
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expectEqual(t, fc, expectedHeadlessService(shortName, "ingress"))
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expectEqual(t, fc, expectedSTSUserspace(opts))
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// 2. Ingress status gets updated with ingress proxy's MagicDNS name
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// once that becomes available.
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mustUpdate(t, fc, "operator-ns", opts.secretName, func(secret *corev1.Secret) {
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mak.Set(&secret.Data, "device_id", []byte("1234"))
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mak.Set(&secret.Data, "device_fqdn", []byte("foo.tailnetxyz.ts.net"))
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})
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expectReconciled(t, ingR, "default", "test")
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ing.Finalizers = append(ing.Finalizers, "tailscale.com/finalizer")
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ing.Status.LoadBalancer = networkingv1.IngressLoadBalancerStatus{
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Ingress: []networkingv1.IngressLoadBalancerIngress{
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{Hostname: "foo.tailnetxyz.ts.net", Ports: []networkingv1.IngressPortStatus{{Port: 443, Protocol: "TCP"}}},
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},
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}
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expectEqual(t, fc, ing)
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// 3. Resources get created for Ingress that should allow forwarding
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// cluster traffic
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mustUpdate(t, fc, "default", "test", func(ing *networkingv1.Ingress) {
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mak.Set(&ing.ObjectMeta.Annotations, AnnotationExperimentalForwardClusterTrafficViaL7IngresProxy, "true")
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})
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opts.shouldEnableForwardingClusterTrafficViaIngress = true
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expectReconciled(t, ingR, "default", "test")
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expectEqual(t, fc, expectedSTS(opts))
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// 4. Resources get cleaned up when Ingress class is unset
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mustUpdate(t, fc, "default", "test", func(ing *networkingv1.Ingress) {
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ing.Spec.IngressClassName = ptr.To("nginx")
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})
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expectReconciled(t, ingR, "default", "test")
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expectReconciled(t, ingR, "default", "test") // deleting Ingress STS requires two reconciles
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expectMissing[appsv1.StatefulSet](t, fc, "operator-ns", shortName)
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expectMissing[corev1.Service](t, fc, "operator-ns", shortName)
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expectMissing[corev1.Secret](t, fc, "operator-ns", fullName)
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}
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