-
Notifications
You must be signed in to change notification settings - Fork 277
/
main.go
228 lines (200 loc) · 7.99 KB
/
main.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
227
228
/*
Copyright 2018 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package main
import (
"context"
"flag"
"fmt"
"net/http"
_ "net/http/pprof" // #nosec
"os"
"strings"
"time"
secretsstorev1 "sigs.k8s.io/secrets-store-csi-driver/apis/v1"
"sigs.k8s.io/secrets-store-csi-driver/controllers"
"sigs.k8s.io/secrets-store-csi-driver/pkg/k8s"
"sigs.k8s.io/secrets-store-csi-driver/pkg/metrics"
"sigs.k8s.io/secrets-store-csi-driver/pkg/rotation"
secretsstore "sigs.k8s.io/secrets-store-csi-driver/pkg/secrets-store"
"sigs.k8s.io/secrets-store-csi-driver/pkg/version"
"google.golang.org/grpc"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/kubernetes"
clientgoscheme "k8s.io/client-go/kubernetes/scheme"
"k8s.io/client-go/rest"
json "k8s.io/component-base/logs/json"
"k8s.io/klog/v2"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/cache"
"sigs.k8s.io/controller-runtime/pkg/client/apiutil"
// +kubebuilder:scaffold:imports
)
var (
endpoint = flag.String("endpoint", "unix://tmp/csi.sock", "CSI endpoint")
driverName = flag.String("drivername", "secrets-store.csi.k8s.io", "name of the driver")
nodeID = flag.String("nodeid", "", "node id")
logFormatJSON = flag.Bool("log-format-json", false, "set log formatter to json")
providerVolumePath = flag.String("provider-volume", "/etc/kubernetes/secrets-store-csi-providers", "Volume path for provider")
// Check in additional paths for providers. Added to support migration from /etc/ to /var/ as part of
// https://github.com/kubernetes-sigs/secrets-store-csi-driver/issues/823.
// The default should be moved to /var/ in https://github.com/kubernetes-sigs/secrets-store-csi-driver/issues/870
additionalProviderPaths = flag.String("additional-provider-volume-paths", "/var/run/secrets-store-csi-providers", "Comma separated list of additional paths to communicate with providers")
// this will be removed in a future release
metricsAddr = flag.String("metrics-addr", ":8095", "The address the metric endpoint binds to")
enableSecretRotation = flag.Bool("enable-secret-rotation", false, "Enable secret rotation feature [alpha]")
rotationPollInterval = flag.Duration("rotation-poll-interval", 2*time.Minute, "Secret rotation poll interval duration")
enableProfile = flag.Bool("enable-pprof", false, "enable pprof profiling")
profilePort = flag.Int("pprof-port", 6065, "port for pprof profiling")
maxCallRecvMsgSize = flag.Int("max-call-recv-msg-size", 1024*1024*4, "maximum size in bytes of gRPC response from plugins")
// Enable optional healthcheck for provider clients that exist in memory
providerHealthCheck = flag.Bool("provider-health-check", false, "Enable health check for configured providers")
providerHealthCheckInterval = flag.Duration("provider-health-check-interval", 2*time.Minute, "Provider healthcheck interval duration")
scheme = runtime.NewScheme()
)
func init() {
_ = clientgoscheme.AddToScheme(scheme)
_ = secretsstorev1.AddToScheme(scheme)
// +kubebuilder:scaffold:scheme
}
func main() {
klog.InitFlags(nil)
defer klog.Flush()
flag.Parse()
if *logFormatJSON {
logger, _ := json.NewJSONLogger(nil, nil)
klog.SetLogger(logger)
}
if *enableProfile {
klog.InfoS("Starting profiling", "port", *profilePort)
go func() {
addr := fmt.Sprintf("%s:%d", "localhost", *profilePort)
klog.ErrorS(http.ListenAndServe(addr, nil), "unable to start profiling server")
}()
}
// initialize metrics exporter before creating measurements
err := metrics.InitMetricsExporter()
if err != nil {
klog.ErrorS(err, "failed to initialize metrics exporter")
os.Exit(1)
}
cfg := ctrl.GetConfigOrDie()
cfg.UserAgent = version.GetUserAgent("controller")
mgr, err := ctrl.NewManager(cfg, ctrl.Options{
Scheme: scheme,
MetricsBindAddress: *metricsAddr,
LeaderElection: false,
MapperProvider: func(c *rest.Config) (meta.RESTMapper, error) {
return apiutil.NewDynamicRESTMapper(c, apiutil.WithLazyDiscovery)
},
NewCache: cache.BuilderWithOptions(cache.Options{
SelectorsByObject: cache.SelectorsByObject{
// this enables filtered watch of pods based on the node name
// only pods running on the same node as the csi driver will be cached
&corev1.Pod{}: {
Field: fields.OneTermEqualSelector("spec.nodeName", *nodeID),
},
// this enables filtered watch of secretproviderclasspodstatuses based on the internal node label
// internal.secrets-store.csi.k8s.io/node-name=<node name> added by csi driver
&secretsstorev1.SecretProviderClassPodStatus{}: {
Label: labels.SelectorFromSet(
labels.Set{
secretsstorev1.InternalNodeLabel: *nodeID,
},
),
},
// this enables filtered watch of secrets based on the label (eg. secrets-store.csi.k8s.io/managed=true)
// added to the secrets created by the CSI driver
&corev1.Secret{}: {
Label: labels.SelectorFromSet(
labels.Set{
controllers.SecretManagedLabel: "true",
},
),
},
},
}),
})
if err != nil {
klog.ErrorS(err, "failed to start manager")
os.Exit(1)
}
reconciler, err := controllers.New(mgr, *nodeID)
if err != nil {
klog.ErrorS(err, "failed to create secret provider class pod status reconciler")
os.Exit(1)
}
if err = reconciler.SetupWithManager(mgr); err != nil {
klog.ErrorS(err, "failed to create controller")
os.Exit(1)
}
// +kubebuilder:scaffold:builder
ctx := withShutdownSignal(context.Background())
// create provider clients
providerPaths := strings.Split(strings.TrimSpace(*additionalProviderPaths), ",")
providerPaths = append(providerPaths, *providerVolumePath)
providerClients := secretsstore.NewPluginClientBuilder(providerPaths, grpc.WithDefaultCallOptions(grpc.MaxCallRecvMsgSize(*maxCallRecvMsgSize)))
defer providerClients.Cleanup()
// enable provider health check
if *providerHealthCheck {
klog.InfoS("provider health check enabled", "interval", *providerHealthCheckInterval)
go providerClients.HealthCheck(ctx, *providerHealthCheckInterval)
}
go func() {
klog.Info("starting manager")
if err := mgr.Start(ctx); err != nil {
klog.ErrorS(err, "failed to run manager")
os.Exit(1)
}
}()
go func() {
reconciler.RunPatcher(ctx)
}()
// token request client
kubeClient := kubernetes.NewForConfigOrDie(cfg)
tokenClient := k8s.NewTokenClient(kubeClient, *driverName, 10*time.Minute)
if err != nil {
klog.ErrorS(err, "failed to create token client")
os.Exit(1)
}
if err = tokenClient.Run(ctx.Done()); err != nil {
klog.ErrorS(err, "failed to run token client")
os.Exit(1)
}
// Secret rotation
if *enableSecretRotation {
rec, err := rotation.NewReconciler(mgr.GetCache(), scheme, *providerVolumePath, *nodeID, *rotationPollInterval, providerClients, tokenClient)
if err != nil {
klog.ErrorS(err, "failed to initialize rotation reconciler")
os.Exit(1)
}
go rec.Run(ctx.Done())
}
driver := secretsstore.NewSecretsStoreDriver(*driverName, *nodeID, *endpoint, *providerVolumePath, providerClients, mgr.GetClient(), mgr.GetAPIReader(), tokenClient)
driver.Run(ctx)
}
// withShutdownSignal returns a copy of the parent context that will close if
// the process receives termination signals.
func withShutdownSignal(ctx context.Context) context.Context {
nctx, cancel := context.WithCancel(ctx)
stopCh := ctrl.SetupSignalHandler().Done()
go func() {
<-stopCh
klog.Info("received shutdown signal")
cancel()
}()
return nctx
}