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Copy pathconsul_dataplane_sidecar_test.go
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consul_dataplane_sidecar_test.go
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// Copyright (c) HashiCorp, Inc.
// SPDX-License-Identifier: MPL-2.0
package webhookv2
import (
"fmt"
"strconv"
"strings"
"testing"
"github.com/stretchr/testify/require"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/intstr"
"k8s.io/utils/ptr"
"github.com/hashicorp/consul-k8s/control-plane/connect-inject/constants"
"github.com/hashicorp/consul-k8s/control-plane/connect-inject/lifecycle"
"github.com/hashicorp/consul-k8s/control-plane/connect-inject/metrics"
"github.com/hashicorp/consul-k8s/control-plane/consul"
)
const nodeName = "test-node"
func TestHandlerConsulDataplaneSidecar(t *testing.T) {
cases := map[string]struct {
webhookSetupFunc func(w *MeshWebhook)
additionalExpCmdArgs string
}{
"default": {
webhookSetupFunc: nil,
additionalExpCmdArgs: " -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with custom gRPC port": {
webhookSetupFunc: func(w *MeshWebhook) {
w.ConsulConfig.GRPCPort = 8602
},
additionalExpCmdArgs: " -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with ACLs": {
webhookSetupFunc: func(w *MeshWebhook) {
w.AuthMethod = "test-auth-method"
},
additionalExpCmdArgs: " -credential-type=login -login-auth-method=test-auth-method -login-bearer-token-path=/var/run/secrets/kubernetes.io/serviceaccount/token " +
"-tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with ACLs and namespace mirroring": {
webhookSetupFunc: func(w *MeshWebhook) {
w.AuthMethod = "test-auth-method"
w.EnableNamespaces = true
w.EnableK8SNSMirroring = true
},
additionalExpCmdArgs: " -credential-type=login -login-auth-method=test-auth-method -login-bearer-token-path=/var/run/secrets/kubernetes.io/serviceaccount/token " +
"-login-namespace=default -proxy-namespace=k8snamespace -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with ACLs and single destination namespace": {
webhookSetupFunc: func(w *MeshWebhook) {
w.AuthMethod = "test-auth-method"
w.EnableNamespaces = true
w.ConsulDestinationNamespace = "test-ns"
},
additionalExpCmdArgs: " -credential-type=login -login-auth-method=test-auth-method -login-bearer-token-path=/var/run/secrets/kubernetes.io/serviceaccount/token " +
"-login-namespace=test-ns -proxy-namespace=test-ns -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with ACLs and partitions": {
webhookSetupFunc: func(w *MeshWebhook) {
w.AuthMethod = "test-auth-method"
w.ConsulPartition = "test-part"
},
additionalExpCmdArgs: " -credential-type=login -login-auth-method=test-auth-method -login-bearer-token-path=/var/run/secrets/kubernetes.io/serviceaccount/token " +
"-login-partition=test-part -proxy-partition=test-part -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with TLS and CA cert provided": {
webhookSetupFunc: func(w *MeshWebhook) {
w.TLSEnabled = true
w.ConsulTLSServerName = "server.dc1.consul"
w.ConsulCACert = "consul-ca-cert"
},
additionalExpCmdArgs: " -tls-server-name=server.dc1.consul -ca-certs=/consul/mesh-inject/consul-ca.pem -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with TLS and no CA cert provided": {
webhookSetupFunc: func(w *MeshWebhook) {
w.TLSEnabled = true
w.ConsulTLSServerName = "server.dc1.consul"
},
additionalExpCmdArgs: " -tls-server-name=server.dc1.consul -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with single destination namespace": {
webhookSetupFunc: func(w *MeshWebhook) {
w.EnableNamespaces = true
w.ConsulDestinationNamespace = "consul-namespace"
},
additionalExpCmdArgs: " -proxy-namespace=consul-namespace -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with namespace mirroring": {
webhookSetupFunc: func(w *MeshWebhook) {
w.EnableNamespaces = true
w.EnableK8SNSMirroring = true
},
additionalExpCmdArgs: " -proxy-namespace=k8snamespace -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with namespace mirroring prefix": {
webhookSetupFunc: func(w *MeshWebhook) {
w.EnableNamespaces = true
w.EnableK8SNSMirroring = true
w.K8SNSMirroringPrefix = "foo-"
},
additionalExpCmdArgs: " -proxy-namespace=foo-k8snamespace -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with partitions": {
webhookSetupFunc: func(w *MeshWebhook) {
w.ConsulPartition = "partition-1"
},
additionalExpCmdArgs: " -proxy-partition=partition-1 -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with different log level": {
webhookSetupFunc: func(w *MeshWebhook) {
w.LogLevel = "debug"
},
additionalExpCmdArgs: " -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"with different log level and log json": {
webhookSetupFunc: func(w *MeshWebhook) {
w.LogLevel = "debug"
w.LogJSON = true
},
additionalExpCmdArgs: " -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"skip server watch enabled": {
webhookSetupFunc: func(w *MeshWebhook) {
w.SkipServerWatch = true
},
additionalExpCmdArgs: " -server-watch-disabled=true -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/metrics",
},
"custom prometheus scrape path": {
webhookSetupFunc: func(w *MeshWebhook) {
w.MetricsConfig.DefaultPrometheusScrapePath = "/scrape-path" // Simulate what would be passed as a flag
},
additionalExpCmdArgs: " -tls-disabled -graceful-port=20600 -telemetry-prom-scrape-path=/scrape-path",
},
}
for name, c := range cases {
t.Run(name, func(t *testing.T) {
w := &MeshWebhook{
ConsulAddress: "1.1.1.1",
ConsulConfig: &consul.Config{GRPCPort: 8502},
LogLevel: "info",
LogJSON: false,
}
if c.webhookSetupFunc != nil {
c.webhookSetupFunc(w)
}
pod := corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: "test-pod",
Annotations: map[string]string{
constants.AnnotationService: "foo",
},
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "web",
},
{
Name: "web-side",
},
{
Name: "auth-method-secret",
VolumeMounts: []corev1.VolumeMount{
{
Name: "service-account-secret",
MountPath: "/var/run/secrets/kubernetes.io/serviceaccount",
},
},
},
},
ServiceAccountName: "web",
NodeName: nodeName,
},
}
container, err := w.consulDataplaneSidecar(testNS, pod)
require.NoError(t, err)
expCmd := "-addresses 1.1.1.1 -grpc-port=" + strconv.Itoa(w.ConsulConfig.GRPCPort) +
" -log-level=" + w.LogLevel + " -log-json=" + strconv.FormatBool(w.LogJSON) + " -envoy-concurrency=0" + c.additionalExpCmdArgs
require.Equal(t, expCmd, strings.Join(container.Args, " "))
if w.AuthMethod != "" {
require.Equal(t, container.VolumeMounts, []corev1.VolumeMount{
{
Name: volumeName,
MountPath: "/consul/mesh-inject",
},
{
Name: "service-account-secret",
MountPath: "/var/run/secrets/kubernetes.io/serviceaccount",
},
})
} else {
require.Equal(t, container.VolumeMounts, []corev1.VolumeMount{
{
Name: volumeName,
MountPath: "/consul/mesh-inject",
},
})
}
expectedProbe := &corev1.Probe{
ProbeHandler: corev1.ProbeHandler{
TCPSocket: &corev1.TCPSocketAction{
Port: intstr.FromInt(constants.ProxyDefaultInboundPort),
},
},
InitialDelaySeconds: 1,
}
require.Equal(t, expectedProbe, container.ReadinessProbe)
require.Nil(t, container.StartupProbe)
require.Len(t, container.Env, 8)
require.Equal(t, container.Env[0].Name, "TMPDIR")
require.Equal(t, container.Env[0].Value, "/consul/mesh-inject")
require.Equal(t, container.Env[2].Name, "POD_NAME")
require.Equal(t, container.Env[3].Name, "POD_NAMESPACE")
require.Equal(t, container.Env[4].Name, "DP_PROXY_ID")
require.Equal(t, container.Env[4].Value, "$(POD_NAME)")
require.Equal(t, container.Env[5].Name, "DP_CREDENTIAL_LOGIN_META")
require.Equal(t, container.Env[5].Value, "pod=$(POD_NAMESPACE)/$(POD_NAME)")
require.Equal(t, container.Env[7].Name, "HOST_IP")
})
}
}
func TestHandlerConsulDataplaneSidecar_Concurrency(t *testing.T) {
cases := map[string]struct {
annotations map[string]string
expFlags string
expErr string
}{
"default settings, no annotations": {
annotations: map[string]string{
constants.AnnotationService: "foo",
},
expFlags: "-envoy-concurrency=0",
},
"default settings, annotation override": {
annotations: map[string]string{
constants.AnnotationService: "foo",
constants.AnnotationEnvoyProxyConcurrency: "42",
},
expFlags: "-envoy-concurrency=42",
},
"default settings, invalid concurrency annotation negative number": {
annotations: map[string]string{
constants.AnnotationService: "foo",
constants.AnnotationEnvoyProxyConcurrency: "-42",
},
expErr: "unable to parse annotation \"consul.hashicorp.com/consul-envoy-proxy-concurrency\": strconv.ParseUint: parsing \"-42\": invalid syntax",
},
"default settings, not-parseable concurrency annotation": {
annotations: map[string]string{
constants.AnnotationService: "foo",
constants.AnnotationEnvoyProxyConcurrency: "not-int",
},
expErr: "unable to parse annotation \"consul.hashicorp.com/consul-envoy-proxy-concurrency\": strconv.ParseUint: parsing \"not-int\": invalid syntax",
},
}
for name, c := range cases {
t.Run(name, func(t *testing.T) {
h := MeshWebhook{
ConsulConfig: &consul.Config{HTTPPort: 8500, GRPCPort: 8502},
}
pod := corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: c.annotations,
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "web",
},
},
},
}
container, err := h.consulDataplaneSidecar(testNS, pod)
if c.expErr != "" {
require.EqualError(t, err, c.expErr)
} else {
require.NoError(t, err)
require.Contains(t, strings.Join(container.Args, " "), c.expFlags)
}
})
}
}
// Test that we pass the dns proxy flag to dataplane correctly.
func TestHandlerConsulDataplaneSidecar_DNSProxy(t *testing.T) {
// We only want the flag passed when DNS and tproxy are both enabled. DNS/tproxy can
// both be enabled/disabled with annotations/labels on the pod and namespace and then globally
// through the helm chart. To test this we use an outer loop with the possible DNS settings and then
// and inner loop with possible tproxy settings.
dnsCases := []struct {
GlobalConsulDNS bool
NamespaceDNS *bool
PodDNS *bool
ExpEnabled bool
}{
{
GlobalConsulDNS: false,
ExpEnabled: false,
},
{
GlobalConsulDNS: true,
ExpEnabled: true,
},
{
GlobalConsulDNS: false,
NamespaceDNS: boolPtr(true),
ExpEnabled: true,
},
{
GlobalConsulDNS: false,
PodDNS: boolPtr(true),
ExpEnabled: true,
},
}
tproxyCases := []struct {
GlobalTProxy bool
NamespaceTProxy *bool
PodTProxy *bool
ExpEnabled bool
}{
{
GlobalTProxy: false,
ExpEnabled: false,
},
{
GlobalTProxy: true,
ExpEnabled: true,
},
{
GlobalTProxy: false,
NamespaceTProxy: boolPtr(true),
ExpEnabled: true,
},
{
GlobalTProxy: false,
PodTProxy: boolPtr(true),
ExpEnabled: true,
},
}
// Outer loop is permutations of dns being enabled. Inner loop is permutations of tproxy being enabled.
// Both must be enabled for dns to be enabled.
for i, dnsCase := range dnsCases {
for j, tproxyCase := range tproxyCases {
t.Run(fmt.Sprintf("dns=%d,tproxy=%d", i, j), func(t *testing.T) {
// Test setup.
h := MeshWebhook{
ConsulConfig: &consul.Config{HTTPPort: 8500, GRPCPort: 8502},
EnableTransparentProxy: tproxyCase.GlobalTProxy,
EnableConsulDNS: dnsCase.GlobalConsulDNS,
}
pod := corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{},
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "web",
},
},
},
}
if dnsCase.PodDNS != nil {
pod.Annotations[constants.KeyConsulDNS] = strconv.FormatBool(*dnsCase.PodDNS)
}
if tproxyCase.PodTProxy != nil {
pod.Annotations[constants.KeyTransparentProxy] = strconv.FormatBool(*tproxyCase.PodTProxy)
}
ns := corev1.Namespace{
ObjectMeta: metav1.ObjectMeta{
Name: k8sNamespace,
Labels: map[string]string{},
},
}
if dnsCase.NamespaceDNS != nil {
ns.Labels[constants.KeyConsulDNS] = strconv.FormatBool(*dnsCase.NamespaceDNS)
}
if tproxyCase.NamespaceTProxy != nil {
ns.Labels[constants.KeyTransparentProxy] = strconv.FormatBool(*tproxyCase.NamespaceTProxy)
}
// Actual test here.
container, err := h.consulDataplaneSidecar(ns, pod)
require.NoError(t, err)
// Flag should only be passed if both tproxy and dns are enabled.
if tproxyCase.ExpEnabled && dnsCase.ExpEnabled {
require.Contains(t, container.Args, "-consul-dns-bind-port=8600")
} else {
require.NotContains(t, container.Args, "-consul-dns-bind-port=8600")
}
})
}
}
}
func TestHandlerConsulDataplaneSidecar_ProxyHealthCheck(t *testing.T) {
h := MeshWebhook{
ConsulConfig: &consul.Config{HTTPPort: 8500, GRPCPort: 8502},
ConsulAddress: "1.1.1.1",
LogLevel: "info",
}
pod := corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
constants.AnnotationUseProxyHealthCheck: "true",
},
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "web",
},
},
},
}
container, err := h.consulDataplaneSidecar(testNS, pod)
expectedProbe := &corev1.Probe{
ProbeHandler: corev1.ProbeHandler{
HTTPGet: &corev1.HTTPGetAction{
Port: intstr.FromInt(21000),
Path: "/ready",
},
},
InitialDelaySeconds: 1,
}
require.NoError(t, err)
require.Contains(t, container.Args, "-envoy-ready-bind-port=21000")
require.Equal(t, expectedProbe, container.ReadinessProbe)
require.Contains(t, container.Env, corev1.EnvVar{
Name: "DP_ENVOY_READY_BIND_ADDRESS",
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{FieldPath: "status.podIP"},
},
})
require.Contains(t, container.Ports, corev1.ContainerPort{
Name: "proxy-health",
ContainerPort: 21000,
})
}
func TestHandlerConsulDataplaneSidecar_withSecurityContext(t *testing.T) {
cases := map[string]struct {
tproxyEnabled bool
openShiftEnabled bool
expSecurityContext *corev1.SecurityContext
}{
"tproxy disabled; openshift disabled": {
tproxyEnabled: false,
openShiftEnabled: false,
expSecurityContext: &corev1.SecurityContext{
RunAsUser: ptr.To(int64(sidecarUserAndGroupID)),
RunAsGroup: ptr.To(int64(sidecarUserAndGroupID)),
RunAsNonRoot: ptr.To(true),
ReadOnlyRootFilesystem: ptr.To(true),
AllowPrivilegeEscalation: ptr.To(false),
},
},
"tproxy enabled; openshift disabled": {
tproxyEnabled: true,
openShiftEnabled: false,
expSecurityContext: &corev1.SecurityContext{
RunAsUser: ptr.To(int64(sidecarUserAndGroupID)),
RunAsGroup: ptr.To(int64(sidecarUserAndGroupID)),
RunAsNonRoot: ptr.To(true),
ReadOnlyRootFilesystem: ptr.To(true),
AllowPrivilegeEscalation: ptr.To(false),
},
},
"tproxy disabled; openshift enabled": {
tproxyEnabled: false,
openShiftEnabled: true,
expSecurityContext: nil,
},
"tproxy enabled; openshift enabled": {
tproxyEnabled: true,
openShiftEnabled: true,
expSecurityContext: &corev1.SecurityContext{
RunAsUser: ptr.To(int64(sidecarUserAndGroupID)),
RunAsGroup: ptr.To(int64(sidecarUserAndGroupID)),
RunAsNonRoot: ptr.To(true),
ReadOnlyRootFilesystem: ptr.To(true),
AllowPrivilegeEscalation: ptr.To(false),
},
},
}
for name, c := range cases {
t.Run(name, func(t *testing.T) {
w := MeshWebhook{
EnableTransparentProxy: c.tproxyEnabled,
EnableOpenShift: c.openShiftEnabled,
ConsulConfig: &consul.Config{HTTPPort: 8500, GRPCPort: 8502},
}
pod := corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
constants.AnnotationService: "foo",
},
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "web",
},
},
},
}
ec, err := w.consulDataplaneSidecar(testNS, pod)
require.NoError(t, err)
require.Equal(t, c.expSecurityContext, ec.SecurityContext)
})
}
}
// Test that if the user specifies a pod security context with the same uid as `sidecarUserAndGroupID` that we return
// an error to the meshWebhook.
func TestHandlerConsulDataplaneSidecar_FailsWithDuplicatePodSecurityContextUID(t *testing.T) {
require := require.New(t)
w := MeshWebhook{
ConsulConfig: &consul.Config{HTTPPort: 8500, GRPCPort: 8502},
}
pod := corev1.Pod{
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "web",
},
},
SecurityContext: &corev1.PodSecurityContext{
RunAsUser: ptr.To(int64(sidecarUserAndGroupID)),
},
},
}
_, err := w.consulDataplaneSidecar(testNS, pod)
require.EqualError(err, fmt.Sprintf("pod's security context cannot have the same UID as consul-dataplane: %v", sidecarUserAndGroupID))
}
// Test that if the user specifies a container with security context with the same uid as `sidecarUserAndGroupID` that we
// return an error to the meshWebhook. If a container using the consul-dataplane image has the same uid, we don't return an error
// because in multiport pod there can be multiple consul-dataplane sidecars.
func TestHandlerConsulDataplaneSidecar_FailsWithDuplicateContainerSecurityContextUID(t *testing.T) {
cases := []struct {
name string
pod corev1.Pod
webhook MeshWebhook
expErr bool
expErrMessage string
}{
{
name: "fails with non consul-dataplane image",
pod: corev1.Pod{
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "web",
// Setting RunAsUser: 1 should succeed.
SecurityContext: &corev1.SecurityContext{
RunAsUser: ptr.To(int64(1)),
},
},
{
Name: "app",
// Setting RunAsUser: 5995 should fail.
SecurityContext: &corev1.SecurityContext{
RunAsUser: ptr.To(int64(sidecarUserAndGroupID)),
},
Image: "not-consul-dataplane",
},
},
},
},
webhook: MeshWebhook{},
expErr: true,
expErrMessage: fmt.Sprintf("container \"app\" has runAsUser set to the same UID \"%d\" as consul-dataplane which is not allowed", sidecarUserAndGroupID),
},
{
name: "doesn't fail with envoy image",
pod: corev1.Pod{
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "web",
// Setting RunAsUser: 1 should succeed.
SecurityContext: &corev1.SecurityContext{
RunAsUser: ptr.To(int64(1)),
},
},
{
Name: "sidecar",
// Setting RunAsUser: 5995 should succeed if the image matches h.ImageConsulDataplane.
SecurityContext: &corev1.SecurityContext{
RunAsUser: ptr.To(int64(sidecarUserAndGroupID)),
},
Image: "envoy",
},
},
},
},
webhook: MeshWebhook{
ImageConsulDataplane: "envoy",
},
expErr: false,
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
tc.webhook.ConsulConfig = &consul.Config{HTTPPort: 8500, GRPCPort: 8502}
_, err := tc.webhook.consulDataplaneSidecar(testNS, tc.pod)
if tc.expErr {
require.EqualError(t, err, tc.expErrMessage)
} else {
require.NoError(t, err)
}
})
}
}
// Test that we can pass extra args to envoy via the extraEnvoyArgs flag
// or via pod annotations. When arguments are passed in both ways, the
// arguments set via pod annotations are used.
func TestHandlerConsulDataplaneSidecar_EnvoyExtraArgs(t *testing.T) {
cases := []struct {
name string
envoyExtraArgs string
pod *corev1.Pod
expectedExtraArgs string
}{
{
name: "no extra options provided",
envoyExtraArgs: "",
pod: &corev1.Pod{},
expectedExtraArgs: "",
},
{
name: "via flag: extra log-level option",
envoyExtraArgs: "--log-level debug",
pod: &corev1.Pod{},
expectedExtraArgs: "-- --log-level debug",
},
{
name: "via flag: multiple arguments with quotes",
envoyExtraArgs: "--log-level debug --admin-address-path \"/tmp/consul/foo bar\"",
pod: &corev1.Pod{},
expectedExtraArgs: "-- --log-level debug --admin-address-path \"/tmp/consul/foo bar\"",
},
{
name: "via annotation: multiple arguments with quotes",
envoyExtraArgs: "",
pod: &corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
constants.AnnotationEnvoyExtraArgs: "--log-level debug --admin-address-path \"/tmp/consul/foo bar\"",
},
},
},
expectedExtraArgs: "-- --log-level debug --admin-address-path \"/tmp/consul/foo bar\"",
},
{
name: "via flag and annotation: should prefer setting via the annotation",
envoyExtraArgs: "this should be overwritten",
pod: &corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
constants.AnnotationEnvoyExtraArgs: "--log-level debug --admin-address-path \"/tmp/consul/foo bar\"",
},
},
},
expectedExtraArgs: "-- --log-level debug --admin-address-path \"/tmp/consul/foo bar\"",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
h := MeshWebhook{
ImageConsul: "hashicorp/consul:latest",
ImageConsulDataplane: "hashicorp/consul-k8s:latest",
ConsulConfig: &consul.Config{HTTPPort: 8500, GRPCPort: 8502},
EnvoyExtraArgs: tc.envoyExtraArgs,
}
c, err := h.consulDataplaneSidecar(testNS, *tc.pod)
require.NoError(t, err)
require.Contains(t, strings.Join(c.Args, " "), tc.expectedExtraArgs)
})
}
}
func TestHandlerConsulDataplaneSidecar_UserVolumeMounts(t *testing.T) {
cases := []struct {
name string
pod corev1.Pod
expectedContainerVolumeMounts []corev1.VolumeMount
expErr string
}{
{
name: "able to set a sidecar container volume mount via annotation",
pod: corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
constants.AnnotationEnvoyExtraArgs: "--log-level debug --admin-address-path \"/tmp/consul/foo bar\"",
constants.AnnotationConsulSidecarUserVolumeMount: "[{\"name\": \"tls-cert\", \"mountPath\": \"/custom/path\"}, {\"name\": \"tls-ca\", \"mountPath\": \"/custom/path2\"}]",
},
},
},
expectedContainerVolumeMounts: []corev1.VolumeMount{
{
Name: "consul-mesh-inject-data",
MountPath: "/consul/mesh-inject",
},
{
Name: "tls-cert",
MountPath: "/custom/path",
},
{
Name: "tls-ca",
MountPath: "/custom/path2",
},
},
},
{
name: "invalid annotation results in error",
pod: corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
constants.AnnotationEnvoyExtraArgs: "--log-level debug --admin-address-path \"/tmp/consul/foo bar\"",
constants.AnnotationConsulSidecarUserVolumeMount: "[abcdefg]",
},
},
},
expErr: "invalid character 'a' looking ",
},
}
for _, tc := range cases {
t.Run(tc.name, func(t *testing.T) {
h := MeshWebhook{
ImageConsul: "hashicorp/consul:latest",
ImageConsulDataplane: "hashicorp/consul-k8s:latest",
ConsulConfig: &consul.Config{HTTPPort: 8500, GRPCPort: 8502},
}
c, err := h.consulDataplaneSidecar(testNS, tc.pod)
if tc.expErr == "" {
require.NoError(t, err)
require.Equal(t, tc.expectedContainerVolumeMounts, c.VolumeMounts)
} else {
require.Error(t, err)
require.Contains(t, err.Error(), tc.expErr)
}
})
}
}
func TestHandlerConsulDataplaneSidecar_Resources(t *testing.T) {
mem1 := resource.MustParse("100Mi")
mem2 := resource.MustParse("200Mi")
cpu1 := resource.MustParse("100m")
cpu2 := resource.MustParse("200m")
zero := resource.MustParse("0")
cases := map[string]struct {
webhook MeshWebhook
annotations map[string]string
expResources corev1.ResourceRequirements
expErr string
}{
"no defaults, no annotations": {
webhook: MeshWebhook{},
annotations: nil,
expResources: corev1.ResourceRequirements{
Limits: corev1.ResourceList{},
Requests: corev1.ResourceList{},
},
},
"all defaults, no annotations": {
webhook: MeshWebhook{
DefaultProxyCPURequest: cpu1,
DefaultProxyCPULimit: cpu2,
DefaultProxyMemoryRequest: mem1,
DefaultProxyMemoryLimit: mem2,
},
annotations: nil,
expResources: corev1.ResourceRequirements{
Limits: corev1.ResourceList{
corev1.ResourceCPU: cpu2,
corev1.ResourceMemory: mem2,
},
Requests: corev1.ResourceList{
corev1.ResourceCPU: cpu1,
corev1.ResourceMemory: mem1,
},
},
},
"no defaults, all annotations": {
webhook: MeshWebhook{},
annotations: map[string]string{
constants.AnnotationSidecarProxyCPURequest: "100m",
constants.AnnotationSidecarProxyMemoryRequest: "100Mi",
constants.AnnotationSidecarProxyCPULimit: "200m",
constants.AnnotationSidecarProxyMemoryLimit: "200Mi",
},
expResources: corev1.ResourceRequirements{
Limits: corev1.ResourceList{
corev1.ResourceCPU: cpu2,
corev1.ResourceMemory: mem2,
},
Requests: corev1.ResourceList{
corev1.ResourceCPU: cpu1,
corev1.ResourceMemory: mem1,
},
},
},
"annotations override defaults": {
webhook: MeshWebhook{
DefaultProxyCPURequest: zero,
DefaultProxyCPULimit: zero,
DefaultProxyMemoryRequest: zero,
DefaultProxyMemoryLimit: zero,
},
annotations: map[string]string{
constants.AnnotationSidecarProxyCPURequest: "100m",
constants.AnnotationSidecarProxyMemoryRequest: "100Mi",
constants.AnnotationSidecarProxyCPULimit: "200m",
constants.AnnotationSidecarProxyMemoryLimit: "200Mi",
},
expResources: corev1.ResourceRequirements{
Limits: corev1.ResourceList{
corev1.ResourceCPU: cpu2,
corev1.ResourceMemory: mem2,
},
Requests: corev1.ResourceList{
corev1.ResourceCPU: cpu1,
corev1.ResourceMemory: mem1,
},
},
},
"defaults set to zero, no annotations": {
webhook: MeshWebhook{
DefaultProxyCPURequest: zero,
DefaultProxyCPULimit: zero,
DefaultProxyMemoryRequest: zero,
DefaultProxyMemoryLimit: zero,
},
annotations: nil,
expResources: corev1.ResourceRequirements{
Limits: corev1.ResourceList{
corev1.ResourceCPU: zero,
corev1.ResourceMemory: zero,
},
Requests: corev1.ResourceList{
corev1.ResourceCPU: zero,
corev1.ResourceMemory: zero,
},
},
},
"annotations set to 0": {
webhook: MeshWebhook{},
annotations: map[string]string{
constants.AnnotationSidecarProxyCPURequest: "0",
constants.AnnotationSidecarProxyMemoryRequest: "0",
constants.AnnotationSidecarProxyCPULimit: "0",
constants.AnnotationSidecarProxyMemoryLimit: "0",
},
expResources: corev1.ResourceRequirements{
Limits: corev1.ResourceList{
corev1.ResourceCPU: zero,
corev1.ResourceMemory: zero,
},
Requests: corev1.ResourceList{
corev1.ResourceCPU: zero,
corev1.ResourceMemory: zero,
},
},
},
"invalid cpu request": {
webhook: MeshWebhook{},
annotations: map[string]string{
constants.AnnotationSidecarProxyCPURequest: "invalid",
},
expErr: "parsing annotation consul.hashicorp.com/sidecar-proxy-cpu-request:\"invalid\": quantities must match the regular expression",
},
"invalid cpu limit": {
webhook: MeshWebhook{},
annotations: map[string]string{
constants.AnnotationSidecarProxyCPULimit: "invalid",
},
expErr: "parsing annotation consul.hashicorp.com/sidecar-proxy-cpu-limit:\"invalid\": quantities must match the regular expression",
},
"invalid memory request": {
webhook: MeshWebhook{},
annotations: map[string]string{
constants.AnnotationSidecarProxyMemoryRequest: "invalid",
},
expErr: "parsing annotation consul.hashicorp.com/sidecar-proxy-memory-request:\"invalid\": quantities must match the regular expression",
},
"invalid memory limit": {
webhook: MeshWebhook{},
annotations: map[string]string{
constants.AnnotationSidecarProxyMemoryLimit: "invalid",
},
expErr: "parsing annotation consul.hashicorp.com/sidecar-proxy-memory-limit:\"invalid\": quantities must match the regular expression",
},
}
for name, c := range cases {
t.Run(name, func(tt *testing.T) {
c.webhook.ConsulConfig = &consul.Config{HTTPPort: 8500, GRPCPort: 8502}
require := require.New(tt)
pod := corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: c.annotations,
},
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: "web",
},
},
},
}
container, err := c.webhook.consulDataplaneSidecar(testNS, pod)
if c.expErr != "" {
require.NotNil(err)
require.Contains(err.Error(), c.expErr)
} else {
require.NoError(err)
require.Equal(c.expResources, container.Resources)
}
})
}
}
func TestHandlerConsulDataplaneSidecar_Metrics(t *testing.T) {
cases := []struct {
name string
pod corev1.Pod
expCmdArgs string
expPorts []corev1.ContainerPort
expErr string
}{
{
name: "default",
pod: corev1.Pod{},
expCmdArgs: "",
},
{
name: "turning on merged metrics",
pod: corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
constants.AnnotationService: "web",
constants.AnnotationEnableMetrics: "true",
constants.AnnotationEnableMetricsMerging: "true",
constants.AnnotationMergedMetricsPort: "20100",
constants.AnnotationPort: "1234",
constants.AnnotationPrometheusScrapePath: "/scrape-path",
},
},
},
expCmdArgs: "-telemetry-prom-scrape-path=/scrape-path -telemetry-prom-merge-port=20100 -telemetry-prom-service-metrics-url=http://127.0.0.1:1234/metrics",
expPorts: []corev1.ContainerPort{
{
Name: "prometheus",
ContainerPort: 20200,
Protocol: corev1.ProtocolTCP,
},
},
},
{
name: "metrics with prometheus port override",
pod: corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Annotations: map[string]string{
constants.AnnotationService: "web",
constants.AnnotationEnableMetrics: "true",
constants.AnnotationEnableMetricsMerging: "true",
constants.AnnotationMergedMetricsPort: "20123",
constants.AnnotationPort: "1234",
constants.AnnotationPrometheusScrapePath: "/scrape-path",
constants.AnnotationPrometheusScrapePort: "6789",