/
run_webhook.go
226 lines (194 loc) · 7.27 KB
/
run_webhook.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
// Copyright (c) 2022, 2023, Oracle and/or its affiliates.
// Licensed under the Universal Permissive License v 1.0 as shown at https://oss.oracle.com/licenses/upl.
package operatorinit
import (
vzapi "github.com/verrazzano/verrazzano/application-operator/apis/oam/v1alpha1"
"github.com/verrazzano/verrazzano/application-operator/controllers/webhooks"
"github.com/verrazzano/verrazzano/application-operator/internal/certificates"
"github.com/verrazzano/verrazzano/pkg/k8sutil"
"go.uber.org/zap"
istioversionedclient "istio.io/client-go/pkg/clientset/versioned"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/dynamic"
"k8s.io/client-go/kubernetes"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/webhook"
)
const (
failedToUpdate = "Failed to update %s: %v"
)
// WebhookInit Webhook init container entry point
func WebhookInit(certDir string, log *zap.SugaredLogger) error {
log.Debug("Creating certificates used by webhooks")
conf, err := k8sutil.GetConfigFromController()
if err != nil {
log.Errorf("Failed to get config: %v", err)
return err
}
kubeClient, err := kubernetes.NewForConfig(conf)
if err != nil {
log.Errorf("Failed to get kubernetes client: %v", err)
return err
}
// Create the webhook certificates and secrets
if err := certificates.CreateWebhookCertificates(log, kubeClient, certDir); err != nil {
log.Errorf("Failed to create webhook certificates and secrets: %v", err)
return err
}
return nil
}
func StartWebhookServer(metricsAddr string, log *zap.SugaredLogger, enableLeaderElection bool, certDir string, scheme *runtime.Scheme) error {
config, err := k8sutil.GetConfigFromController()
if err != nil {
log.Errorf("Failed to get kubeconfig: %v", err)
return err
}
mgr, err := ctrl.NewManager(config, ctrl.Options{
Scheme: scheme,
MetricsBindAddress: metricsAddr,
Port: 9443,
LeaderElection: enableLeaderElection,
LeaderElectionID: "5df248b4.verrazzano.io",
})
if err != nil {
log.Errorf("Failed to start manager: %v", err)
return err
}
kubeClient, err := kubernetes.NewForConfig(config)
if err != nil {
log.Errorf("Failed to get clientset", err)
return err
}
log.Debug("Setting up certificates for webhook")
err = updateValidatingWebhookConfiguration(kubeClient, certificates.IngressTraitValidatingWebhookName)
if err != nil {
log.Errorf(failedToUpdate, certificates.IngressTraitValidatingWebhookName, err)
return err
}
err = updateValidatingWebhookConfiguration(kubeClient, certificates.MultiClusterSecretName)
if err != nil {
log.Errorf(failedToUpdate, certificates.MultiClusterSecretName, err)
return err
}
err = updateValidatingWebhookConfiguration(kubeClient, certificates.MultiClusterComponentName)
if err != nil {
log.Errorf(failedToUpdate, certificates.MultiClusterComponentName, err)
return err
}
err = updateValidatingWebhookConfiguration(kubeClient, certificates.MultiClusterConfigMapName)
if err != nil {
log.Errorf(failedToUpdate, certificates.MultiClusterConfigMapName, err)
return err
}
err = updateValidatingWebhookConfiguration(kubeClient, certificates.MultiClusterApplicationConfigurationName)
if err != nil {
log.Errorf(failedToUpdate, certificates.MultiClusterApplicationConfigurationName, err)
return err
}
err = updateValidatingWebhookConfiguration(kubeClient, certificates.VerrazzanoProjectValidatingWebhookName)
if err != nil {
log.Errorf(failedToUpdate, certificates.VerrazzanoProjectValidatingWebhookName, err)
return err
}
err = updateMutatingWebhookConfiguration(kubeClient, certificates.IstioMutatingWebhookName)
if err != nil {
log.Errorf(failedToUpdate, certificates.IstioMutatingWebhookName, err)
return err
}
err = updateMutatingWebhookConfiguration(kubeClient, certificates.AppConfigMutatingWebhookName)
if err != nil {
log.Errorf(failedToUpdate, certificates.AppConfigMutatingWebhookName, err)
return err
}
err = updateMutatingWebhookConfiguration(kubeClient, certificates.MetricsBindingWebhookName)
if err != nil {
log.Errorf(failedToUpdate, certificates.MetricsBindingWebhookName, err)
return err
}
if err = (&vzapi.IngressTrait{}).SetupWebhookWithManager(mgr); err != nil {
log.Errorf("Failed to create IngressTrait webhook: %v", err)
return err
}
// VerrazzanoProject validating webhook
mgr.GetWebhookServer().Register(
"/validate-clusters-verrazzano-io-v1alpha1-verrazzanoproject",
&webhook.Admission{Handler: &webhooks.VerrazzanoProjectValidator{}})
dynamicClient, err := dynamic.NewForConfig(config)
if err != nil {
log.Errorf("Failed to create Kubernetes dynamic client: %v", err)
return err
}
istioClientSet, err := istioversionedclient.NewForConfig(config)
if err != nil {
log.Errorf("Failed to create istio client: %v", err)
return err
}
// Register a webhook that listens on pods that are running in a istio enabled namespace.
mgr.GetWebhookServer().Register(
webhooks.IstioDefaulterPath,
&webhook.Admission{
Handler: &webhooks.IstioWebhook{
Client: mgr.GetClient(),
KubeClient: kubeClient,
DynamicClient: dynamicClient,
IstioClient: istioClientSet,
},
},
)
// Register the metrics binding mutating webhooks for plain old kubernetes objects workloads
// The webhooks handle legacy metrics template annotations on these workloads - newer
// workloads should rely on user-created monitor resources.
mgr.GetWebhookServer().Register(
webhooks.MetricsBindingGeneratorWorkloadPath,
&webhook.Admission{
Handler: &webhooks.WorkloadWebhook{
Client: mgr.GetClient(),
KubeClient: kubeClient,
},
},
)
mgr.GetWebhookServer().Register(
webhooks.MetricsBindingLabelerPodPath,
&webhook.Admission{
Handler: &webhooks.LabelerPodWebhook{
Client: mgr.GetClient(),
DynamicClient: dynamicClient,
},
},
)
mgr.GetWebhookServer().CertDir = certDir
appconfigWebhook := &webhooks.AppConfigWebhook{
Client: mgr.GetClient(),
KubeClient: kubeClient,
IstioClient: istioClientSet,
Defaulters: []webhooks.AppConfigDefaulter{
&webhooks.MetricsTraitDefaulter{
Client: mgr.GetClient(),
},
},
}
mgr.GetWebhookServer().Register(webhooks.AppConfigDefaulterPath, &webhook.Admission{Handler: appconfigWebhook})
// MultiClusterApplicationConfiguration validating webhook
mgr.GetWebhookServer().Register(
"/validate-clusters-verrazzano-io-v1alpha1-multiclusterapplicationconfiguration",
&webhook.Admission{Handler: &webhooks.MultiClusterApplicationConfigurationValidator{}})
// MultiClusterComponent validating webhook
mgr.GetWebhookServer().Register(
"/validate-clusters-verrazzano-io-v1alpha1-multiclustercomponent",
&webhook.Admission{Handler: &webhooks.MultiClusterComponentValidator{}})
// MultiClusterConfigMap validating webhook
mgr.GetWebhookServer().Register(
"/validate-clusters-verrazzano-io-v1alpha1-multiclusterconfigmap",
&webhook.Admission{Handler: &webhooks.MultiClusterConfigmapValidator{}})
// MultiClusterSecret validating webhook
mgr.GetWebhookServer().Register(
"/validate-clusters-verrazzano-io-v1alpha1-multiclustersecret",
&webhook.Admission{Handler: &webhooks.MultiClusterSecretValidator{}})
// +kubebuilder:scaffold:builder
log.Info("Starting manager")
if err = mgr.Start(ctrl.SetupSignalHandler()); err != nil {
log.Errorf("Failed to run manager: %v", err)
return err
}
return err
}