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cmd/k8s-operator: base ProxyGroup StatefulSet on common proxy.yaml definition (#13714)

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As discussed in #13684, base the ProxyGroup's proxy definitions on the same
scaffolding as the existing proxies, as defined in proxy.yaml

Updates #13406

Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>
pull/13736/head
Tom Proctor 2 weeks ago committed by GitHub
parent 83efadee9f
commit 07c157ee9f
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
3 changed files with 144 additions and 148 deletions
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5
cmd/k8s-operator/proxygroup.go
Unescape Escape View File

@ -239,7 +239,10 @@ func (r *ProxyGroupReconciler) maybeProvision(ctx context.Context, pg *tsapi.Pro
return fmt.Errorf("error provisioning ConfigMap: %w", err) return fmt.Errorf("error provisioning ConfigMap: %w", err)
} }
} }
ss := pgStatefulSet(pg, r.tsNamespace, r.proxyImage, r.tsFirewallMode, cfgHash) ss, err := pgStatefulSet(pg, r.tsNamespace, r.proxyImage, r.tsFirewallMode, cfgHash)
if err != nil {
return fmt.Errorf("error generating StatefulSet spec: %w", err)
}
ss = applyProxyClassToStatefulSet(proxyClass, ss, nil, logger) ss = applyProxyClassToStatefulSet(proxyClass, ss, nil, logger)
if _, err := createOrUpdate(ctx, r.Client, r.tsNamespace, ss, func(s *appsv1.StatefulSet) { if _, err := createOrUpdate(ctx, r.Client, r.tsNamespace, ss, func(s *appsv1.StatefulSet) {
s.ObjectMeta.Labels = ss.ObjectMeta.Labels s.ObjectMeta.Labels = ss.ObjectMeta.Labels

282
cmd/k8s-operator/proxygroup_specs.go
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@ -12,6 +12,7 @@ import (
corev1 "k8s.io/api/core/v1" corev1 "k8s.io/api/core/v1"
rbacv1 "k8s.io/api/rbac/v1" rbacv1 "k8s.io/api/rbac/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/yaml"
tsapi "tailscale.com/k8s-operator/apis/v1alpha1" tsapi "tailscale.com/k8s-operator/apis/v1alpha1"
"tailscale.com/kube/egressservices" "tailscale.com/kube/egressservices"
"tailscale.com/types/ptr" "tailscale.com/types/ptr"
@ -19,163 +20,152 @@ import (
// Returns the base StatefulSet definition for a ProxyGroup. A ProxyClass may be // Returns the base StatefulSet definition for a ProxyGroup. A ProxyClass may be
// applied over the top after. // applied over the top after.
func pgStatefulSet(pg *tsapi.ProxyGroup, namespace, image, tsFirewallMode, cfgHash string) *appsv1.StatefulSet { func pgStatefulSet(pg *tsapi.ProxyGroup, namespace, image, tsFirewallMode, cfgHash string) (*appsv1.StatefulSet, error) {
return &appsv1.StatefulSet{ ss := new(appsv1.StatefulSet)
ObjectMeta: metav1.ObjectMeta{ if err := yaml.Unmarshal(proxyYaml, &ss); err != nil {
Name: pg.Name, return nil, fmt.Errorf("failed to unmarshal proxy spec: %w", err)
Namespace: namespace, }
Labels: pgLabels(pg.Name, nil), // Validate some base assumptions.
OwnerReferences: pgOwnerReference(pg), if len(ss.Spec.Template.Spec.InitContainers) != 1 {
return nil, fmt.Errorf("[unexpected] base proxy config had %d init containers instead of 1", len(ss.Spec.Template.Spec.InitContainers))
}
if len(ss.Spec.Template.Spec.Containers) != 1 {
return nil, fmt.Errorf("[unexpected] base proxy config had %d containers instead of 1", len(ss.Spec.Template.Spec.Containers))
}
// StatefulSet config.
ss.ObjectMeta = metav1.ObjectMeta{
Name: pg.Name,
Namespace: namespace,
Labels: pgLabels(pg.Name, nil),
OwnerReferences: pgOwnerReference(pg),
}
ss.Spec.Replicas = ptr.To(pgReplicas(pg))
ss.Spec.Selector = &metav1.LabelSelector{
MatchLabels: pgLabels(pg.Name, nil),
}
// Template config.
tmpl := &ss.Spec.Template
tmpl.ObjectMeta = metav1.ObjectMeta{
Name: pg.Name,
Namespace: namespace,
Labels: pgLabels(pg.Name, nil),
DeletionGracePeriodSeconds: ptr.To[int64](10),
Annotations: map[string]string{
podAnnotationLastSetConfigFileHash: cfgHash,
}, },
Spec: appsv1.StatefulSetSpec{ }
Replicas: ptr.To(pgReplicas(pg)), tmpl.Spec.ServiceAccountName = pg.Name
Selector: &metav1.LabelSelector{ tmpl.Spec.InitContainers[0].Image = image
MatchLabels: pgLabels(pg.Name, nil), tmpl.Spec.Volumes = func() []corev1.Volume {
}, var volumes []corev1.Volume
Template: corev1.PodTemplateSpec{ for i := range pgReplicas(pg) {
ObjectMeta: metav1.ObjectMeta{ volumes = append(volumes, corev1.Volume{
Name: pg.Name, Name: fmt.Sprintf("tailscaledconfig-%d", i),
Namespace: namespace, VolumeSource: corev1.VolumeSource{
Labels: pgLabels(pg.Name, nil), Secret: &corev1.SecretVolumeSource{
DeletionGracePeriodSeconds: ptr.To[int64](10), SecretName: fmt.Sprintf("%s-%d-config", pg.Name, i),
Annotations: map[string]string{
podAnnotationLastSetConfigFileHash: cfgHash,
}, },
}, },
Spec: corev1.PodSpec{ })
ServiceAccountName: pg.Name, }
InitContainers: []corev1.Container{
{ if pg.Spec.Type == tsapi.ProxyGroupTypeEgress {
Name: "sysctler", volumes = append(volumes, corev1.Volume{
Image: image, Name: pgEgressCMName(pg.Name),
SecurityContext: &corev1.SecurityContext{ VolumeSource: corev1.VolumeSource{
Privileged: ptr.To(true), ConfigMap: &corev1.ConfigMapVolumeSource{
}, LocalObjectReference: corev1.LocalObjectReference{
Command: []string{ Name: pgEgressCMName(pg.Name),
"/bin/sh",
"-c",
},
Args: []string{
"sysctl -w net.ipv4.ip_forward=1 && if sysctl net.ipv6.conf.all.forwarding; then sysctl -w net.ipv6.conf.all.forwarding=1; fi",
},
}, },
}, },
Containers: []corev1.Container{ },
{ })
Name: "tailscale", }
Image: image,
SecurityContext: &corev1.SecurityContext{
Capabilities: &corev1.Capabilities{
Add: []corev1.Capability{
"NET_ADMIN",
},
},
},
VolumeMounts: func() []corev1.VolumeMount {
var mounts []corev1.VolumeMount
for i := range pgReplicas(pg) {
mounts = append(mounts, corev1.VolumeMount{
Name: fmt.Sprintf("tailscaledconfig-%d", i),
ReadOnly: true,
MountPath: fmt.Sprintf("/etc/tsconfig/%s-%d", pg.Name, i),
})
}
if pg.Spec.Type == tsapi.ProxyGroupTypeEgress { return volumes
mounts = append(mounts, corev1.VolumeMount{ }()
Name: pgEgressCMName(pg.Name),
MountPath: "/etc/proxies",
ReadOnly: true,
})
}
return mounts
}(),
Env: func() []corev1.EnvVar {
envs := []corev1.EnvVar{
{
// TODO(irbekrm): verify that .status.podIPs are always set, else read in .status.podIP as well.
Name: "POD_IPS", // this will be a comma separate list i.e 10.136.0.6,2600:1900:4011:161:0:e:0:6
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{
FieldPath: "status.podIPs",
},
},
},
{
Name: "POD_NAME",
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{
// Secret is named after the pod.
FieldPath: "metadata.name",
},
},
},
{
Name: "TS_KUBE_SECRET",
Value: "$(POD_NAME)",
},
{
Name: "TS_STATE",
Value: "kube:$(POD_NAME)",
},
{
Name: "TS_EXPERIMENTAL_VERSIONED_CONFIG_DIR",
Value: "/etc/tsconfig/$(POD_NAME)",
},
{
Name: "TS_USERSPACE",
Value: "false",
},
}
if pg.Spec.Type == tsapi.ProxyGroupTypeEgress {
envs = append(envs, corev1.EnvVar{
Name: "TS_EGRESS_SERVICES_CONFIG_PATH",
Value: fmt.Sprintf("/etc/proxies/%s", egressservices.KeyEgressServices),
})
}
if tsFirewallMode != "" { // Main container config.
envs = append(envs, corev1.EnvVar{ c := &ss.Spec.Template.Spec.Containers[0]
Name: "TS_DEBUG_FIREWALL_MODE", c.Image = image
Value: tsFirewallMode, c.VolumeMounts = func() []corev1.VolumeMount {
}) var mounts []corev1.VolumeMount
} for i := range pgReplicas(pg) {
mounts = append(mounts, corev1.VolumeMount{
Name: fmt.Sprintf("tailscaledconfig-%d", i),
ReadOnly: true,
MountPath: fmt.Sprintf("/etc/tsconfig/%s-%d", pg.Name, i),
})
}
return envs if pg.Spec.Type == tsapi.ProxyGroupTypeEgress {
}(), mounts = append(mounts, corev1.VolumeMount{
}, Name: pgEgressCMName(pg.Name),
}, MountPath: "/etc/proxies",
Volumes: func() []corev1.Volume { ReadOnly: true,
var volumes []corev1.Volume })
for i := range pgReplicas(pg) { }
volumes = append(volumes, corev1.Volume{
Name: fmt.Sprintf("tailscaledconfig-%d", i),
VolumeSource: corev1.VolumeSource{
Secret: &corev1.SecretVolumeSource{
SecretName: fmt.Sprintf("%s-%d-config", pg.Name, i),
},
},
})
}
if pg.Spec.Type == tsapi.ProxyGroupTypeEgress {
volumes = append(volumes, corev1.Volume{
Name: pgEgressCMName(pg.Name),
VolumeSource: corev1.VolumeSource{
ConfigMap: &corev1.ConfigMapVolumeSource{
LocalObjectReference: corev1.LocalObjectReference{
Name: pgEgressCMName(pg.Name),
},
},
},
})
}
return volumes return mounts
}(), }()
c.Env = func() []corev1.EnvVar {
envs := []corev1.EnvVar{
{
// TODO(irbekrm): verify that .status.podIPs are always set, else read in .status.podIP as well.
Name: "POD_IPS", // this will be a comma separate list i.e 10.136.0.6,2600:1900:4011:161:0:e:0:6
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{
FieldPath: "status.podIPs",
},
}, },
}, },
}, {
} Name: "POD_NAME",
ValueFrom: &corev1.EnvVarSource{
FieldRef: &corev1.ObjectFieldSelector{
// Secret is named after the pod.
FieldPath: "metadata.name",
},
},
},
{
Name: "TS_KUBE_SECRET",
Value: "$(POD_NAME)",
},
{
Name: "TS_STATE",
Value: "kube:$(POD_NAME)",
},
{
Name: "TS_EXPERIMENTAL_VERSIONED_CONFIG_DIR",
Value: "/etc/tsconfig/$(POD_NAME)",
},
{
Name: "TS_USERSPACE",
Value: "false",
},
}
if tsFirewallMode != "" {
envs = append(envs, corev1.EnvVar{
Name: "TS_DEBUG_FIREWALL_MODE",
Value: tsFirewallMode,
})
}
if pg.Spec.Type == tsapi.ProxyGroupTypeEgress {
envs = append(envs, corev1.EnvVar{
Name: "TS_EGRESS_SERVICES_CONFIG_PATH",
Value: fmt.Sprintf("/etc/proxies/%s", egressservices.KeyEgressServices),
})
}
return envs
}()
return ss, nil
} }
func pgServiceAccount(pg *tsapi.ProxyGroup, namespace string) *corev1.ServiceAccount { func pgServiceAccount(pg *tsapi.ProxyGroup, namespace string) *corev1.ServiceAccount {

5
cmd/k8s-operator/proxygroup_test.go
Unescape Escape View File

@ -197,7 +197,10 @@ func expectProxyGroupResources(t *testing.T, fc client.WithWatch, pg *tsapi.Prox
role := pgRole(pg, tsNamespace) role := pgRole(pg, tsNamespace)
roleBinding := pgRoleBinding(pg, tsNamespace) roleBinding := pgRoleBinding(pg, tsNamespace)
serviceAccount := pgServiceAccount(pg, tsNamespace) serviceAccount := pgServiceAccount(pg, tsNamespace)
statefulSet := pgStatefulSet(pg, tsNamespace, testProxyImage, "auto", "") statefulSet, err := pgStatefulSet(pg, tsNamespace, testProxyImage, "auto", "")
if err != nil {
t.Fatal(err)
}
statefulSet.Annotations = defaultProxyClassAnnotations statefulSet.Annotations = defaultProxyClassAnnotations
if shouldExist { if shouldExist {

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