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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)
}
}
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)
if _, err := createOrUpdate(ctx, r.Client, r.tsNamespace, ss, func(s *appsv1.StatefulSet) {
s.ObjectMeta.Labels = ss.ObjectMeta.Labels

140
cmd/k8s-operator/proxygroup_specs.go
Unescape Escape View File

@ -12,6 +12,7 @@ import (
corev1 "k8s.io/api/core/v1"
rbacv1 "k8s.io/api/rbac/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/yaml"
tsapi "tailscale.com/k8s-operator/apis/v1alpha1"
"tailscale.com/kube/egressservices"
"tailscale.com/types/ptr"
@ -19,21 +20,34 @@ import (
// Returns the base StatefulSet definition for a ProxyGroup. A ProxyClass may be
// applied over the top after.
func pgStatefulSet(pg *tsapi.ProxyGroup, namespace, image, tsFirewallMode, cfgHash string) *appsv1.StatefulSet {
return &appsv1.StatefulSet{
ObjectMeta: metav1.ObjectMeta{
func pgStatefulSet(pg *tsapi.ProxyGroup, namespace, image, tsFirewallMode, cfgHash string) (*appsv1.StatefulSet, error) {
ss := new(appsv1.StatefulSet)
if err := yaml.Unmarshal(proxyYaml, &ss); err != nil {
return nil, fmt.Errorf("failed to unmarshal proxy spec: %w", err)
}
// Validate some base assumptions.
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),
},
Spec: appsv1.StatefulSetSpec{
Replicas: ptr.To(pgReplicas(pg)),
Selector: &metav1.LabelSelector{
}
ss.Spec.Replicas = ptr.To(pgReplicas(pg))
ss.Spec.Selector = &metav1.LabelSelector{
MatchLabels: pgLabels(pg.Name, nil),
},
Template: corev1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
}
// Template config.
tmpl := &ss.Spec.Template
tmpl.ObjectMeta = metav1.ObjectMeta{
Name: pg.Name,
Namespace: namespace,
Labels: pgLabels(pg.Name, nil),
@ -41,37 +55,42 @@ func pgStatefulSet(pg *tsapi.ProxyGroup, namespace, image, tsFirewallMode, cfgHa
Annotations: map[string]string{
podAnnotationLastSetConfigFileHash: cfgHash,
},
},
Spec: corev1.PodSpec{
ServiceAccountName: pg.Name,
InitContainers: []corev1.Container{
{
Name: "sysctler",
Image: image,
SecurityContext: &corev1.SecurityContext{
Privileged: ptr.To(true),
},
Command: []string{
"/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",
},
}
tmpl.Spec.ServiceAccountName = pg.Name
tmpl.Spec.InitContainers[0].Image = image
tmpl.Spec.Volumes = func() []corev1.Volume {
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),
},
},
Containers: []corev1.Container{
{
Name: "tailscale",
Image: image,
SecurityContext: &corev1.SecurityContext{
Capabilities: &corev1.Capabilities{
Add: []corev1.Capability{
"NET_ADMIN",
})
}
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),
},
},
},
VolumeMounts: func() []corev1.VolumeMount {
})
}
return volumes
}()
// Main container config.
c := &ss.Spec.Template.Spec.Containers[0]
c.Image = image
c.VolumeMounts = func() []corev1.VolumeMount {
var mounts []corev1.VolumeMount
for i := range pgReplicas(pg) {
mounts = append(mounts, corev1.VolumeMount{
@ -88,9 +107,10 @@ func pgStatefulSet(pg *tsapi.ProxyGroup, namespace, image, tsFirewallMode, cfgHa
ReadOnly: true,
})
}
return mounts
}(),
Env: func() []corev1.EnvVar {
}()
c.Env = func() []corev1.EnvVar {
envs := []corev1.EnvVar{
{
// TODO(irbekrm): verify that .status.podIPs are always set, else read in .status.podIP as well.
@ -127,12 +147,6 @@ func pgStatefulSet(pg *tsapi.ProxyGroup, namespace, image, tsFirewallMode, cfgHa
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 != "" {
envs = append(envs, corev1.EnvVar{
@ -141,41 +155,17 @@ func pgStatefulSet(pg *tsapi.ProxyGroup, namespace, image, tsFirewallMode, cfgHa
})
}
return envs
}(),
},
},
Volumes: func() []corev1.Volume {
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),
},
},
},
envs = append(envs, corev1.EnvVar{
Name: "TS_EGRESS_SERVICES_CONFIG_PATH",
Value: fmt.Sprintf("/etc/proxies/%s", egressservices.KeyEgressServices),
})
}
return volumes
}(),
},
},
},
}
return envs
}()
return ss, nil
}
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)
roleBinding := pgRoleBinding(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
if shouldExist {

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