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ingress.go
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ingress.go
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// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package prometheus
import (
"context"
networkingv1 "k8s.io/api/networking/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/utils/ptr"
v1beta1constants "github.com/gardener/gardener/pkg/apis/core/v1beta1/constants"
secretsutils "github.com/gardener/gardener/pkg/utils/secrets"
secretsmanager "github.com/gardener/gardener/pkg/utils/secrets/manager"
)
func (p *prometheus) ingress(ctx context.Context) (*networkingv1.Ingress, error) {
if p.values.Ingress == nil {
return nil, nil
}
tlsSecretName := ptr.Deref(p.values.Ingress.WildcardCertSecretName, "")
if tlsSecretName == "" && p.values.Ingress.SecretsManager != nil {
ingressTLSSecret, err := p.values.Ingress.SecretsManager.Generate(ctx, &secretsutils.CertificateSecretConfig{
Name: p.name() + "-tls",
CommonName: p.name(),
Organization: []string{"gardener.cloud:monitoring:ingress"},
DNSNames: []string{p.values.Ingress.Host},
CertType: secretsutils.ServerCert,
Validity: ptr.To(v1beta1constants.IngressTLSCertificateValidity),
SkipPublishingCACertificate: true,
}, secretsmanager.SignedByCA(p.values.Ingress.SigningCA))
if err != nil {
return nil, err
}
tlsSecretName = ingressTLSSecret.Name
}
obj := &networkingv1.Ingress{
ObjectMeta: metav1.ObjectMeta{
Name: p.name(),
Namespace: p.namespace,
Labels: p.getLabels(),
Annotations: map[string]string{
"nginx.ingress.kubernetes.io/auth-type": "basic",
"nginx.ingress.kubernetes.io/auth-realm": "Authentication Required",
"nginx.ingress.kubernetes.io/auth-secret": p.values.Ingress.AuthSecretName,
},
},
Spec: networkingv1.IngressSpec{
IngressClassName: ptr.To(v1beta1constants.SeedNginxIngressClass),
TLS: []networkingv1.IngressTLS{{
SecretName: tlsSecretName,
Hosts: []string{p.values.Ingress.Host},
}},
Rules: []networkingv1.IngressRule{{
Host: p.values.Ingress.Host,
IngressRuleValue: networkingv1.IngressRuleValue{
HTTP: &networkingv1.HTTPIngressRuleValue{
Paths: []networkingv1.HTTPIngressPath{{
Backend: networkingv1.IngressBackend{
Service: &networkingv1.IngressServiceBackend{
Name: p.name(),
Port: networkingv1.ServiceBackendPort{Number: servicePort},
},
},
Path: "/",
PathType: ptr.To(networkingv1.PathTypePrefix),
}},
},
},
}},
},
}
if p.values.Ingress.BlockManagementAndTargetAPIAccess {
metav1.SetMetaDataAnnotation(&obj.ObjectMeta, "nginx.ingress.kubernetes.io/server-snippet", `location /-/reload {
return 403;
}
location /-/quit {
return 403;
}
location /api/v1/targets {
return 403;
}`)
}
return obj, nil
}