/
create_controller.go
345 lines (299 loc) · 11.2 KB
/
create_controller.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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
/*
Copyright 2019 The Rook Authors. All rights reserved.
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 yugabytedb
import (
yugabytedbv1alpha1 "github.com/rook/rook/pkg/apis/yugabytedb.rook.io/v1alpha1"
"github.com/rook/rook/pkg/operator/k8sutil"
appsv1 "k8s.io/api/apps/v1"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
func (c *ClusterController) OnAdd(obj interface{}) {
clusterObj := obj.(*yugabytedbv1alpha1.YBCluster).DeepCopy()
logger.Infof("new cluster %s added to namespace %s", clusterObj.Name, clusterObj.Namespace)
cluster := NewCluster(clusterObj, c.context)
if err := validateClusterSpec(cluster.spec); err != nil {
logger.Errorf("invalid cluster spec: %+v", err)
return
}
if err := c.createMasterHeadlessService(cluster); err != nil {
logger.Errorf("failed to create master headless service: %+v", err)
return
}
if err := c.createTServerHeadlessService(cluster); err != nil {
logger.Errorf("failed to create TServer headless service: %+v", err)
return
}
if err := c.createMasterUIService(cluster); err != nil {
logger.Errorf("failed to create Master UI service: %+v", err)
return
}
if err := c.createTServerUIService(cluster); err != nil {
logger.Errorf("failed to create replica service: %+v", err)
return
}
if err := c.createMasterStatefulset(cluster); err != nil {
logger.Errorf("failed to create master stateful set: %+v", err)
return
}
if err := c.createTServerStatefulset(cluster); err != nil {
logger.Errorf("failed to create tserver stateful set: %+v", err)
return
}
logger.Infof("succeeded creating and initializing cluster in namespace %s", cluster.namespace)
}
func (c *ClusterController) createMasterUIService(cluster *cluster) error {
return c.createUIService(cluster, false)
}
// Create UI service for TServer, if user has specified a UI port for it. Do not create it implicitly, with default port.
func (c *ClusterController) createTServerUIService(cluster *cluster) error {
return c.createUIService(cluster, true)
}
func (c *ClusterController) createUIService(cluster *cluster, isTServerService bool) error {
ports, err := getPortsFromSpec(cluster.spec.Master.Network)
if err != nil {
return err
}
serviceName := masterUIServiceName
label := masterName
if isTServerService {
ports, err = getPortsFromSpec(cluster.spec.TServer.Network)
if err != nil {
return err
}
// If user hasn't specified TServer UI port, do not create a UI service for it.
if ports.tserverPorts.ui <= 0 {
return nil
}
serviceName = tserverUIServiceName
label = tserverName
}
// Append CR name suffix to make the service name & label unique in current namespace.
serviceName = cluster.addCRNameSuffix(serviceName)
label = cluster.addCRNameSuffix(label)
// This service is meant to be used by clients of the database. It exposes a ClusterIP that will
// automatically load balance connections to the different database pods.
uiService := &v1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: serviceName,
Namespace: cluster.namespace,
Labels: createAppLabels(label),
},
Spec: v1.ServiceSpec{
Selector: createAppLabels(label),
Type: v1.ServiceTypeClusterIP,
Ports: createUIServicePorts(ports, isTServerService),
},
}
k8sutil.SetOwnerRef(&uiService.ObjectMeta, &cluster.ownerRef)
if _, err := c.context.Clientset.CoreV1().Services(cluster.namespace).Create(uiService); err != nil {
if !errors.IsAlreadyExists(err) {
return err
}
logger.Infof("client service %s already exists in namespace %s", uiService.Name, uiService.Namespace)
} else {
logger.Infof("client service %s started in namespace %s", uiService.Name, uiService.Namespace)
}
return nil
}
func (c *ClusterController) createMasterHeadlessService(cluster *cluster) error {
return c.createHeadlessService(cluster, false)
}
func (c *ClusterController) createTServerHeadlessService(cluster *cluster) error {
return c.createHeadlessService(cluster, true)
}
func (c *ClusterController) createHeadlessService(cluster *cluster, isTServerService bool) error {
serviceName := masterNamePlural
label := masterName
if isTServerService {
serviceName = tserverNamePlural
label = tserverName
}
// Append CR name suffix to make the service name & label unique in current namespace.
serviceName = cluster.addCRNameSuffix(serviceName)
label = cluster.addCRNameSuffix(label)
// This service only exists to create DNS entries for each pod in the stateful
// set such that they can resolve each other's IP addresses. It does not
// create a load-balanced ClusterIP and should not be used directly by clients
// in most circumstances.
headlessService := &v1.Service{
ObjectMeta: metav1.ObjectMeta{
Name: serviceName,
Namespace: cluster.namespace,
Labels: createAppLabels(label),
},
Spec: v1.ServiceSpec{
Selector: createAppLabels(label),
// We want all pods in the StatefulSet to have their addresses published for
// the sake of the other YugabyteDB pods even before they're ready, since they
// have to be able to talk to each other in order to become ready.
ClusterIP: "None",
Ports: createServicePorts(cluster, isTServerService),
},
}
k8sutil.SetOwnerRef(&headlessService.ObjectMeta, &cluster.ownerRef)
if _, err := c.context.Clientset.CoreV1().Services(cluster.namespace).Create(headlessService); err != nil {
if !errors.IsAlreadyExists(err) {
return err
}
logger.Infof("headless service %s already exists in namespace %s", headlessService.Name, headlessService.Namespace)
} else {
logger.Infof("headless service %s started in namespace %s", headlessService.Name, headlessService.Namespace)
}
return nil
}
func (c *ClusterController) createMasterStatefulset(cluster *cluster) error {
return c.createStatefulSet(cluster, false)
}
func (c *ClusterController) createTServerStatefulset(cluster *cluster) error {
return c.createStatefulSet(cluster, true)
}
func (c *ClusterController) createStatefulSet(cluster *cluster, isTServerStatefulset bool) error {
replicas := int32(cluster.spec.Master.Replicas)
name := masterName
label := masterName
serviceName := masterNamePlural
volumeClaimTemplates := []v1.PersistentVolumeClaim{
cluster.spec.Master.VolumeClaimTemplate,
}
if isTServerStatefulset {
replicas = int32(cluster.spec.TServer.Replicas)
name = tserverName
label = tserverName
serviceName = tserverNamePlural
volumeClaimTemplates = []v1.PersistentVolumeClaim{
cluster.spec.TServer.VolumeClaimTemplate,
}
}
// Append CR name suffix to make the service name & label unique in current namespace.
name = cluster.addCRNameSuffix(name)
label = cluster.addCRNameSuffix(label)
serviceName = cluster.addCRNameSuffix(serviceName)
volumeClaimTemplates[0].Name = cluster.addCRNameSuffix(volumeClaimTemplates[0].Name)
statefulSet := &appsv1.StatefulSet{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: cluster.namespace,
Labels: createAppLabels(label),
},
Spec: appsv1.StatefulSetSpec{
ServiceName: serviceName,
PodManagementPolicy: appsv1.ParallelPodManagement,
Replicas: &replicas,
Selector: &metav1.LabelSelector{
MatchLabels: createAppLabels(label),
},
Template: v1.PodTemplateSpec{
ObjectMeta: metav1.ObjectMeta{
Namespace: cluster.namespace,
Labels: createAppLabels(label),
},
Spec: createPodSpec(cluster, c.containerImage, isTServerStatefulset, name, serviceName),
},
UpdateStrategy: appsv1.StatefulSetUpdateStrategy{
Type: appsv1.RollingUpdateStatefulSetStrategyType,
},
VolumeClaimTemplates: volumeClaimTemplates,
},
}
cluster.annotations.ApplyToObjectMeta(&statefulSet.Spec.Template.ObjectMeta)
cluster.annotations.ApplyToObjectMeta(&statefulSet.ObjectMeta)
k8sutil.SetOwnerRef(&statefulSet.ObjectMeta, &cluster.ownerRef)
if _, err := c.context.Clientset.AppsV1().StatefulSets(cluster.namespace).Create(statefulSet); err != nil {
if !errors.IsAlreadyExists(err) {
return err
}
logger.Infof("stateful set %s already exists in namespace %s", statefulSet.Name, statefulSet.Namespace)
} else {
logger.Infof("stateful set %s created in namespace %s", statefulSet.Name, statefulSet.Namespace)
}
return nil
}
func createPodSpec(cluster *cluster, containerImage string, isTServerStatefulset bool, name, serviceName string) v1.PodSpec {
return v1.PodSpec{
Affinity: &v1.Affinity{
PodAntiAffinity: &v1.PodAntiAffinity{
PreferredDuringSchedulingIgnoredDuringExecution: []v1.WeightedPodAffinityTerm{
{
Weight: int32(100),
PodAffinityTerm: v1.PodAffinityTerm{
LabelSelector: &metav1.LabelSelector{
MatchExpressions: []metav1.LabelSelectorRequirement{
{
Key: k8sutil.AppAttr,
Operator: metav1.LabelSelectorOpIn,
Values: []string{name},
},
},
},
TopologyKey: v1.LabelHostname,
},
},
},
},
},
Containers: []v1.Container{createContainer(cluster, containerImage, isTServerStatefulset, name, serviceName)},
}
}
func createContainer(cluster *cluster, containerImage string, isTServerStatefulset bool, name, serviceName string) v1.Container {
ports, _ := getPortsFromSpec(cluster.spec.Master.Network)
masterCompleteName := cluster.addCRNameSuffix(masterName)
command := createMasterContainerCommand(cluster.namespace, serviceName, masterCompleteName, ports.masterPorts.rpc, cluster.spec.Master.Replicas)
containerPorts := createMasterContainerPortsList(ports)
volumeMountName := cluster.addCRNameSuffix(cluster.spec.Master.VolumeClaimTemplate.Name)
if isTServerStatefulset {
masterServiceName := cluster.addCRNameSuffix(masterNamePlural)
masterCompleteName := cluster.addCRNameSuffix(masterName)
masterRPCPort := ports.masterPorts.rpc
ports, _ = getPortsFromSpec(cluster.spec.TServer.Network)
command = createTServerContainerCommand(cluster.namespace, serviceName, masterServiceName, masterCompleteName, masterRPCPort, ports.tserverPorts.rpc, ports.tserverPorts.postgres, cluster.spec.TServer.Replicas)
containerPorts = createTServerContainerPortsList(ports)
volumeMountName = cluster.addCRNameSuffix(cluster.spec.TServer.VolumeClaimTemplate.Name)
}
return v1.Container{
Name: name,
Image: yugabyteDBImageName,
ImagePullPolicy: v1.PullAlways,
Env: []v1.EnvVar{
{
Name: envGetHostsFrom,
Value: envGetHostsFromVal,
},
{
Name: envPodIP,
ValueFrom: &v1.EnvVarSource{
FieldRef: &v1.ObjectFieldSelector{
FieldPath: envPodIPVal,
},
},
},
{
Name: envPodName,
ValueFrom: &v1.EnvVarSource{
FieldRef: &v1.ObjectFieldSelector{
FieldPath: envPodNameVal,
},
},
},
},
Command: command,
Ports: containerPorts,
VolumeMounts: []v1.VolumeMount{
{
Name: volumeMountName,
MountPath: volumeMountPath,
},
},
}
}