forked from openshift/origin
/
controller_manager.go
207 lines (180 loc) · 6.87 KB
/
controller_manager.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
package openshift_controller_manager
import (
"fmt"
"net/http"
"os"
"time"
"github.com/golang/glog"
"k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/meta"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/discovery"
cacheddiscovery "k8s.io/client-go/discovery/cached"
kclientsetexternal "k8s.io/client-go/kubernetes"
v1core "k8s.io/client-go/kubernetes/typed/core/v1"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/leaderelection"
"k8s.io/client-go/tools/leaderelection/resourcelock"
"k8s.io/client-go/tools/record"
"k8s.io/kubernetes/pkg/api/legacyscheme"
"k8s.io/kubernetes/pkg/controller"
origincontrollers "github.com/openshift/origin/pkg/cmd/openshift-controller-manager/controller"
configapi "github.com/openshift/origin/pkg/cmd/server/apis/config"
"github.com/openshift/origin/pkg/cmd/server/bootstrappolicy"
"github.com/openshift/origin/pkg/cmd/server/origin"
"github.com/openshift/origin/pkg/version"
)
func RunOpenShiftControllerManager(config *configapi.OpenshiftControllerConfig, clientConfig *rest.Config) error {
kubeExternal, err := kclientsetexternal.NewForConfig(clientConfig)
if err != nil {
return err
}
openshiftControllerInformers, err := origin.NewInformers(clientConfig)
if err != nil {
return err
}
// only serve if we have serving information.
if config.ServingInfo != nil {
glog.Infof("Starting controllers on %s (%s)", config.ServingInfo.BindAddress, version.Get().String())
if err := origincontrollers.RunControllerServer(*config.ServingInfo, kubeExternal); err != nil {
return err
}
}
originControllerManager := func(stopCh <-chan struct{}) {
if err := waitForHealthyAPIServer(kubeExternal.Discovery().RESTClient()); err != nil {
glog.Fatal(err)
}
informersStarted := make(chan struct{})
controllerContext := newControllerContext(*config, clientConfig, kubeExternal, openshiftControllerInformers, stopCh, informersStarted)
if err := startControllers(controllerContext); err != nil {
glog.Fatal(err)
}
openshiftControllerInformers.Start(stopCh)
close(informersStarted)
}
eventBroadcaster := record.NewBroadcaster()
eventBroadcaster.StartLogging(glog.Infof)
eventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: kubeExternal.CoreV1().Events("")})
eventRecorder := eventBroadcaster.NewRecorder(legacyscheme.Scheme, v1.EventSource{Component: "openshift-controller-manager"})
id, err := os.Hostname()
if err != nil {
return err
}
rl, err := resourcelock.New(
"configmaps",
"kube-system",
"openshift-master-controllers", // this matches what ansible used to set
kubeExternal.CoreV1(),
resourcelock.ResourceLockConfig{
Identity: id,
EventRecorder: eventRecorder,
})
if err != nil {
return err
}
go leaderelection.RunOrDie(leaderelection.LeaderElectionConfig{
Lock: rl,
LeaseDuration: config.LeaderElection.LeaseDuration.Duration,
RenewDeadline: config.LeaderElection.RenewDeadline.Duration,
RetryPeriod: config.LeaderElection.RetryPeriod.Duration,
Callbacks: leaderelection.LeaderCallbacks{
OnStartedLeading: originControllerManager,
OnStoppedLeading: func() {
glog.Fatalf("leaderelection lost")
},
},
})
return nil
}
func newControllerContext(
config configapi.OpenshiftControllerConfig,
inClientConfig *rest.Config,
kubeExternal kclientsetexternal.Interface,
informers origin.InformerAccess,
stopCh <-chan struct{},
informersStarted chan struct{},
) origincontrollers.ControllerContext {
// copy to avoid messing with original
clientConfig := rest.CopyConfig(inClientConfig)
// divide up the QPS since it re-used separately for every client
// TODO, eventually make this configurable individually in some way.
if clientConfig.QPS > 0 {
clientConfig.QPS = clientConfig.QPS/10 + 1
}
if clientConfig.Burst > 0 {
clientConfig.Burst = clientConfig.Burst/10 + 1
}
discoveryClient := cacheddiscovery.NewMemCacheClient(kubeExternal.Discovery())
dynamicRestMapper := discovery.NewDeferredDiscoveryRESTMapper(discoveryClient, meta.InterfacesForUnstructured)
dynamicRestMapper.Reset()
go wait.Until(dynamicRestMapper.Reset, 30*time.Second, stopCh)
openshiftControllerContext := origincontrollers.ControllerContext{
OpenshiftControllerConfig: config,
ClientBuilder: origincontrollers.OpenshiftControllerClientBuilder{
ControllerClientBuilder: controller.SAControllerClientBuilder{
ClientConfig: rest.AnonymousClientConfig(clientConfig),
CoreClient: kubeExternal.Core(),
AuthenticationClient: kubeExternal.Authentication(),
Namespace: bootstrappolicy.DefaultOpenShiftInfraNamespace,
},
},
ExternalKubeInformers: informers.GetExternalKubeInformers(),
AppInformers: informers.GetAppInformers(),
AuthorizationInformers: informers.GetAuthorizationInformers(),
BuildInformers: informers.GetBuildInformers(),
ImageInformers: informers.GetImageInformers(),
NetworkInformers: informers.GetNetworkInformers(),
QuotaInformers: informers.GetQuotaInformers(),
SecurityInformers: informers.GetSecurityInformers(),
RouteInformers: informers.GetRouteInformers(),
TemplateInformers: informers.GetTemplateInformers(),
GenericResourceInformer: informers.ToGenericInformer(),
Stop: stopCh,
InformersStarted: informersStarted,
DynamicRestMapper: dynamicRestMapper,
}
return openshiftControllerContext
}
func waitForHealthyAPIServer(client rest.Interface) error {
var healthzContent string
// If apiserver is not running we should wait for some time and fail only then. This is particularly
// important when we start apiserver and controller manager at the same time.
err := wait.PollImmediate(time.Second, 5*time.Minute, func() (bool, error) {
healthStatus := 0
resp := client.Get().AbsPath("/healthz").Do().StatusCode(&healthStatus)
if healthStatus != http.StatusOK {
glog.Errorf("Server isn't healthy yet. Waiting a little while.")
return false, nil
}
content, _ := resp.Raw()
healthzContent = string(content)
return true, nil
})
if err != nil {
return fmt.Errorf("server unhealthy: %v: %v", healthzContent, err)
}
return nil
}
// startControllers launches the controllers
// allocation controller is passed in because it wants direct etcd access. Naughty.
func startControllers(controllerContext origincontrollers.ControllerContext) error {
for controllerName, initFn := range origincontrollers.ControllerInitializers {
if !controllerContext.IsControllerEnabled(controllerName) {
glog.Warningf("%q is disabled", controllerName)
continue
}
glog.V(1).Infof("Starting %q", controllerName)
started, err := initFn(controllerContext)
if err != nil {
glog.Fatalf("Error starting %q (%v)", controllerName, err)
return err
}
if !started {
glog.Warningf("Skipping %q", controllerName)
continue
}
glog.Infof("Started %q", controllerName)
}
glog.Infof("Started Origin Controllers")
return nil
}