forked from rook/rook
subhamkrai
159fe3ae6f
disable webhook in downstream cluster. Signed-off-by: subhamkrai <srai@redhat.com>
271 lines
9.8 KiB
Go
271 lines
9.8 KiB
Go
/*
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Copyright 2022 The Rook Authors. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package operator
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import (
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"context"
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"fmt"
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"time"
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api "github.com/jetstack/cert-manager/pkg/apis/certmanager/v1"
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v1 "github.com/jetstack/cert-manager/pkg/apis/meta/v1"
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cs "github.com/jetstack/cert-manager/pkg/client/clientset/versioned/typed/certmanager/v1"
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"github.com/pkg/errors"
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"github.com/rook/rook/pkg/clusterd"
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admv1 "k8s.io/api/admissionregistration/v1"
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apierrors "k8s.io/apimachinery/pkg/api/errors"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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const (
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issuerName = "selfsigned-issuer"
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certificateName = "rook-admission-controller-cert"
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webhookConfigName = "rook-ceph-webhook"
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serviceCephClusterPath = "/validate-ceph-rook-io-v1-cephcluster"
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serviceCephBlockPoolPath = "/validate-ceph-rook-io-v1-cephblockpool"
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serviceCephObjectStorePath = "/validate-ceph-rook-io-v1-cephobjectstore"
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serviceCephBlockPoolRadosNamespacePath = "/validate-ceph-rook-io-v1-cephblockpoolradosnamespace"
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serviceCephFileSystemSubvolumeGroupPath = "/validate-ceph-rook-io-v1-cephfilesystemsubvolumegroup"
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)
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func fetchorCreateIssuer(ctx context.Context, certMgrClient *cs.CertmanagerV1Client) (*api.Issuer, error) {
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logger.Infof("Fetching Issuer %s/%s.", namespace, issuerName)
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issuer, err := certMgrClient.Issuers(namespace).Get(ctx, issuerName, metav1.GetOptions{})
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if err != nil {
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if apierrors.IsNotFound(err) {
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return createIssuers(ctx, certMgrClient)
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}
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logger.Errorf("failed to get issuer %s. %v", issuerName, err)
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return issuer, err
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}
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return issuer, nil
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}
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func createIssuers(ctx context.Context, certMgrClient *cs.CertmanagerV1Client) (*api.Issuer, error) {
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logger.Infof("Creating Issuer %s/%s.", namespace, issuerName)
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issuer := &api.Issuer{
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ObjectMeta: metav1.ObjectMeta{
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Name: issuerName,
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Namespace: namespace,
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},
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Spec: api.IssuerSpec{
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IssuerConfig: api.IssuerConfig{
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SelfSigned: &api.SelfSignedIssuer{},
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},
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},
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}
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issuers, err := certMgrClient.Issuers(namespace).Create(ctx, issuer, metav1.CreateOptions{})
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if err != nil {
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return nil, fmt.Errorf("failed to create issuer %s. %v", issuerName, err)
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}
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sleepTime := 1
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attempts := 10
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for i := 0; i < attempts; i++ {
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issuers, err = certMgrClient.Issuers(namespace).Get(ctx, issuerName, metav1.GetOptions{})
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if err != nil {
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logger.Errorf("failed to get issuer %s. %v", issuerName, err)
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return issuers, err
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}
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if len(issuers.Status.Conditions) != 0 {
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if issuers.Status.Conditions[0].Reason == "IsReady" && issuers.Status.Conditions[0].Status == "True" {
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return issuers, nil
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}
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logger.Debugf("webhook config %q status=%+v", issuerName, issuers.Status.Conditions[0].Status)
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}
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time.Sleep(time.Duration(sleepTime) * time.Second)
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logger.Infof("waiting for webhook config %q to be in ready status", issuerName)
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}
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return issuers, nil
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}
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func fetchorCreateCertificate(ctx context.Context, certMgrClient *cs.CertmanagerV1Client, issuer *api.Issuer) error {
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logger.Infof("Fetching certificate %s/%s.", namespace, certificateName)
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_, err := certMgrClient.Certificates(namespace).Get(ctx, certificateName, metav1.GetOptions{})
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if err != nil {
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if apierrors.IsNotFound(err) {
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return createCertificate(ctx, certMgrClient, issuer)
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}
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logger.Errorf("failed to get certificate %s. %v", certificateName, err)
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}
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return nil
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}
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func createCertificate(ctx context.Context, certMgrClient *cs.CertmanagerV1Client, issuer *api.Issuer) error {
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logger.Infof("Creating certificate %s/%s.", namespace, certificateName)
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certificate := &api.Certificate{
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ObjectMeta: metav1.ObjectMeta{
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Name: certificateName,
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Namespace: namespace,
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},
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Spec: api.CertificateSpec{
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DNSNames: []string{
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admissionControllerAppName,
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fmt.Sprintf("%s.%s.svc", admissionControllerAppName, namespace),
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fmt.Sprintf("%s.%s.svc.cluster.local", admissionControllerAppName, namespace)},
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IssuerRef: v1.ObjectReference{
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Name: issuer.Name,
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Kind: "Issuer",
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},
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SecretName: admissionControllerAppName,
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},
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}
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_, err := certMgrClient.Certificates(namespace).Create(ctx, certificate, metav1.CreateOptions{})
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if err != nil {
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return fmt.Errorf("failed to create certificate %s. %v", certificateName, err)
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}
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sleepTime := 1
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attempts := 10
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for i := 0; i < attempts; i++ {
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cert, err := certMgrClient.Certificates(namespace).Get(ctx, certificateName, metav1.GetOptions{})
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if err != nil {
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logger.Errorf("failed to get certificate %s. %v", certificateName, err)
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}
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if len(cert.Status.Conditions) != 0 {
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if cert.Status.Conditions[0].Reason == "Ready" && cert.Status.Conditions[0].Status == "True" {
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return nil
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}
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logger.Debugf("webhook config %q status=%+v", certificateName, cert.Status.Conditions[0].Status)
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}
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logger.Infof("waiting for webhook config %q to be in ready status", certificateName)
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time.Sleep(time.Duration(sleepTime) * time.Second)
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}
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return nil
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}
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func addValidatingWebhookConfig(ctx context.Context, clusterdContext *clusterd.Context) error {
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resourcesWebhookName := []string{
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fmt.Sprintf("cephcluster-wh-%s-%s.rook.io", admissionControllerAppName, namespace),
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fmt.Sprintf("cephblockpool-wh-%s-%s.rook.io", admissionControllerAppName, namespace),
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fmt.Sprintf("cephobjectstore-wh-%s-%s.rook.io", admissionControllerAppName, namespace),
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fmt.Sprintf("cephblockpoolradosnamespace-wh-%s-%s.rook.io", admissionControllerAppName, namespace),
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fmt.Sprintf("cephfilesystemsubvolumegroup-wh-%s-%s.rook.io", admissionControllerAppName, namespace),
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}
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resources := []string{
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"cephclusters",
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"cephblockpools",
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"cephobjectstores",
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"cephblockpoolradosnamespaces",
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"cephfilesystemsubvolumegroups",
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}
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resourcesServicePath := []string{
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serviceCephClusterPath,
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serviceCephBlockPoolPath,
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serviceCephObjectStorePath,
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serviceCephBlockPoolRadosNamespacePath,
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serviceCephFileSystemSubvolumeGroupPath,
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}
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logger.Infof("Creating webhook %s/%s.", namespace, webhookConfigName)
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validatingWebhook := &admv1.ValidatingWebhookConfiguration{
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ObjectMeta: metav1.ObjectMeta{
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Name: webhookConfigName,
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Namespace: namespace,
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Annotations: map[string]string{
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"cert-manager.io/inject-ca-from": fmt.Sprintf("%s/rook-admission-controller-cert", namespace),
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},
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},
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}
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for i := range resources {
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validatingWebhook.Webhooks = append(validatingWebhook.Webhooks, webhookRules(resourcesWebhookName[i], resources[i], resourcesServicePath[i]))
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}
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webhookConfig, err := clusterdContext.Clientset.AdmissionregistrationV1().ValidatingWebhookConfigurations().Get(ctx, validatingWebhook.Name, metav1.GetOptions{})
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if err != nil {
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if apierrors.IsNotFound(err) {
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_, err := clusterdContext.Clientset.AdmissionregistrationV1().ValidatingWebhookConfigurations().Create(ctx, validatingWebhook, metav1.CreateOptions{})
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if err != nil {
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logger.Errorf("failed to create admission webhook %s. %v", webhookConfigName, err)
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return errors.Wrapf(err, "failed to create admission webhook %q", validatingWebhook.Name)
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}
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return nil
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}
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return errors.Wrapf(err, "failed to get admission webhook config %q", validatingWebhook.Name)
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}
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validatingWebhook.SetResourceVersion(webhookConfig.GetResourceVersion())
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logger.Info("admission webhook already exists. updating it")
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_, err = clusterdContext.Clientset.AdmissionregistrationV1().ValidatingWebhookConfigurations().Update(ctx, validatingWebhook, metav1.UpdateOptions{})
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if err != nil {
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logger.Errorf("failed to update admission webhook %s. %v", webhookConfigName, err)
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return errors.Wrapf(err, "failed to update admission webhook %q", validatingWebhook.Name)
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}
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return nil
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}
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func webhookRules(name, resource, resourceServicePath string) admv1.ValidatingWebhook {
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var timeout int32 = 5
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sideEffects := admv1.SideEffectClassNone
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return admv1.ValidatingWebhook{
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Name: name,
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Rules: []admv1.RuleWithOperations{
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{
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Rule: admv1.Rule{
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APIGroups: []string{"ceph.rook.io"},
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APIVersions: []string{"v1"},
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Resources: []string{resource},
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},
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Operations: []admv1.OperationType{
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admv1.Update,
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admv1.Create,
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admv1.Delete,
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},
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},
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},
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ClientConfig: admv1.WebhookClientConfig{
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Service: &admv1.ServiceReference{
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Name: admissionControllerAppName,
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Namespace: namespace,
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Path: &resourceServicePath,
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},
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},
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AdmissionReviewVersions: []string{"v1", "v1beta1"},
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SideEffects: &sideEffects,
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TimeoutSeconds: &timeout,
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}
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}
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// No need to return err here since we are just deleting and not handle errors
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func deleteWebhookResources(ctx context.Context, certMgrClient *cs.CertmanagerV1Client, clusterdContext *clusterd.Context) {
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logger.Infof("deleting validating webhook %s", webhookConfigName)
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_ = clusterdContext.Clientset.AdmissionregistrationV1().ValidatingWebhookConfigurations().Delete(ctx, webhookConfigName, metav1.DeleteOptions{})
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logger.Infof("deleting webhook cert manager Certificate %s", certificateName)
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_ = certMgrClient.Certificates(namespace).Delete(ctx, certificateName, metav1.DeleteOptions{})
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logger.Info("deleting webhook cert manager Issuer %s", issuerName)
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_ = certMgrClient.Issuers(namespace).Delete(ctx, issuerName, metav1.DeleteOptions{})
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logger.Info("deleting validating webhook service %s", admissionControllerAppName)
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_ = clusterdContext.Clientset.CoreV1().Services(namespace).Delete(ctx, admissionControllerAppName, metav1.DeleteOptions{})
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}
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