forked from Azure/acs-engine
/
upgradecluster.go
352 lines (310 loc) · 12.6 KB
/
upgradecluster.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
346
347
348
349
350
351
352
package kubernetesupgrade
import (
"context"
"fmt"
"strings"
"time"
"github.com/Azure/acs-engine/pkg/api"
"github.com/Azure/acs-engine/pkg/armhelpers"
"github.com/Azure/acs-engine/pkg/armhelpers/utils"
"github.com/Azure/acs-engine/pkg/i18n"
"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2018-04-01/compute"
"github.com/blang/semver"
"github.com/pkg/errors"
"github.com/satori/go.uuid"
"github.com/sirupsen/logrus"
)
// ClusterTopology contains resources of the cluster the upgrade operation
// is targeting
type ClusterTopology struct {
DataModel *api.ContainerService
SubscriptionID string
Location string
ResourceGroup string
NameSuffix string
AgentPoolsToUpgrade map[string]bool
AgentPools map[string]*AgentPoolTopology
AgentPoolScaleSetsToUpgrade []AgentPoolScaleSet
MasterVMs *[]compute.VirtualMachine
UpgradedMasterVMs *[]compute.VirtualMachine
}
// AgentPoolScaleSet contains necessary data required to upgrade a VMSS
type AgentPoolScaleSet struct {
Name string
Sku compute.Sku
Location string
VMsToUpgrade []AgentPoolScaleSetVM
}
// AgentPoolScaleSetVM represents a VM in a VMSS
type AgentPoolScaleSetVM struct {
Name string
InstanceID string
}
// AgentPoolTopology contains agent VMs in a single pool
type AgentPoolTopology struct {
Identifier *string
Name *string
AgentVMs *[]compute.VirtualMachine
UpgradedAgentVMs *[]compute.VirtualMachine
}
// UpgradeCluster upgrades a cluster with Orchestrator version X.X to version Y.Y.
// Right now upgrades are supported for Kubernetes cluster only.
type UpgradeCluster struct {
Translator *i18n.Translator
Logger *logrus.Entry
ClusterTopology
Client armhelpers.ACSEngineClient
StepTimeout *time.Duration
}
// MasterVMNamePrefix is the prefix for all master VM names for Kubernetes clusters
const MasterVMNamePrefix = "k8s-master-"
// MasterPoolName pool name
const MasterPoolName = "master"
// UpgradeCluster runs the workflow to upgrade a Kubernetes cluster.
func (uc *UpgradeCluster) UpgradeCluster(subscriptionID uuid.UUID, kubeConfig, resourceGroup string,
cs *api.ContainerService, nameSuffix string, agentPoolsToUpgrade []string, acsengineVersion string) error {
uc.ClusterTopology = ClusterTopology{}
uc.SubscriptionID = subscriptionID.String()
uc.ResourceGroup = resourceGroup
uc.DataModel = cs
uc.NameSuffix = nameSuffix
uc.MasterVMs = &[]compute.VirtualMachine{}
uc.UpgradedMasterVMs = &[]compute.VirtualMachine{}
uc.AgentPools = make(map[string]*AgentPoolTopology)
uc.AgentPoolsToUpgrade = make(map[string]bool)
for _, poolName := range agentPoolsToUpgrade {
uc.AgentPoolsToUpgrade[poolName] = true
}
uc.AgentPoolsToUpgrade[MasterPoolName] = true
if err := uc.getClusterNodeStatus(subscriptionID, resourceGroup); err != nil {
return uc.Translator.Errorf("Error while querying ARM for resources: %+v", err)
}
var upgrader UpgradeWorkFlow
upgradeVersion := uc.DataModel.Properties.OrchestratorProfile.OrchestratorVersion
uc.Logger.Infof("Upgrading to Kubernetes version %s\n", upgradeVersion)
switch {
case strings.HasPrefix(upgradeVersion, "1.6."):
upgrader16 := &Kubernetes16upgrader{}
upgrader16.Init(uc.Translator, uc.Logger, uc.ClusterTopology, uc.Client, kubeConfig, uc.StepTimeout, acsengineVersion)
upgrader = upgrader16
case strings.HasPrefix(upgradeVersion, "1.7."):
upgrader17 := &Kubernetes17upgrader{}
upgrader17.Init(uc.Translator, uc.Logger, uc.ClusterTopology, uc.Client, kubeConfig, uc.StepTimeout, acsengineVersion)
upgrader = upgrader17
case strings.HasPrefix(upgradeVersion, "1.8."):
upgrader18 := &Kubernetes18upgrader{}
upgrader18.Init(uc.Translator, uc.Logger, uc.ClusterTopology, uc.Client, kubeConfig, uc.StepTimeout, acsengineVersion)
upgrader = upgrader18
case strings.HasPrefix(upgradeVersion, "1.9."),
strings.HasPrefix(upgradeVersion, "1.10."),
strings.HasPrefix(upgradeVersion, "1.11."),
strings.HasPrefix(upgradeVersion, "1.12."),
strings.HasPrefix(upgradeVersion, "1.13."):
u := &Upgrader{}
u.Init(uc.Translator, uc.Logger, uc.ClusterTopology, uc.Client, kubeConfig, uc.StepTimeout, acsengineVersion)
upgrader = u
default:
return uc.Translator.Errorf("Upgrade to Kubernetes version %s is not supported", upgradeVersion)
}
if err := upgrader.RunUpgrade(); err != nil {
return err
}
uc.Logger.Infof("Cluster upgraded successfully to Kubernetes version %s\n", upgradeVersion)
return nil
}
func (uc *UpgradeCluster) getClusterNodeStatus(subscriptionID uuid.UUID, resourceGroup string) error {
targetOrchestratorTypeVersion := fmt.Sprintf("%s:%s", uc.DataModel.Properties.OrchestratorProfile.OrchestratorType, uc.DataModel.Properties.OrchestratorProfile.OrchestratorVersion)
ctx, cancel := context.WithTimeout(context.Background(), armhelpers.DefaultARMOperationTimeout)
defer cancel()
for vmScaleSetPage, err := uc.Client.ListVirtualMachineScaleSets(ctx, resourceGroup); vmScaleSetPage.NotDone(); err = vmScaleSetPage.Next() {
if err != nil {
return err
}
for _, vmScaleSet := range vmScaleSetPage.Values() {
for vmScaleSetVMsPage, err := uc.Client.ListVirtualMachineScaleSetVMs(ctx, resourceGroup, *vmScaleSet.Name); vmScaleSetVMsPage.NotDone(); err = vmScaleSetVMsPage.Next() {
if err != nil {
return err
}
scaleSetToUpgrade := AgentPoolScaleSet{
Name: *vmScaleSet.Name,
Sku: *vmScaleSet.Sku,
Location: *vmScaleSet.Location,
}
for _, vm := range vmScaleSetVMsPage.Values() {
if vm.Tags == nil || vm.Tags["orchestrator"] == nil {
uc.Logger.Infof("No tags found for scale set VM: %s skipping.\n", *vm.Name)
continue
}
scaleSetVMOrchestratorTypeAndVersion := *vm.Tags["orchestrator"]
if scaleSetVMOrchestratorTypeAndVersion != targetOrchestratorTypeVersion {
// This condition is a scale set VM that is an older version and should be handled
uc.Logger.Infof(
"VM %s in VMSS %s has a current tag of %s and a desired tag of %s. Upgrading this node.\n",
*vm.Name,
*vmScaleSet.Name,
scaleSetVMOrchestratorTypeAndVersion,
targetOrchestratorTypeVersion,
)
scaleSetToUpgrade.VMsToUpgrade = append(
scaleSetToUpgrade.VMsToUpgrade,
AgentPoolScaleSetVM{
Name: *vm.VirtualMachineScaleSetVMProperties.OsProfile.ComputerName,
InstanceID: *vm.InstanceID,
},
)
}
}
uc.AgentPoolScaleSetsToUpgrade = append(uc.AgentPoolScaleSetsToUpgrade, scaleSetToUpgrade)
}
}
}
for vmListPage, err := uc.Client.ListVirtualMachines(ctx, resourceGroup); vmListPage.NotDone(); err = vmListPage.Next() {
if err != nil {
return err
}
for _, vm := range vmListPage.Values() {
if vm.Tags == nil || vm.Tags["orchestrator"] == nil {
uc.Logger.Infof("No tags found for VM: %s skipping.\n", *vm.Name)
continue
}
vmOrchestratorTypeAndVersion := *vm.Tags["orchestrator"]
if vmOrchestratorTypeAndVersion != targetOrchestratorTypeVersion {
if strings.Contains(*(vm.Name), MasterVMNamePrefix) {
if !strings.Contains(*(vm.Name), uc.NameSuffix) {
uc.Logger.Infof("Skipping VM: %s for upgrade as it does not belong to cluster with expected name suffix: %s\n",
*vm.Name, uc.NameSuffix)
continue
}
if err := uc.upgradable(vmOrchestratorTypeAndVersion); err != nil {
return err
}
uc.Logger.Infof("Master VM name: %s, orchestrator: %s (MasterVMs)\n", *vm.Name, vmOrchestratorTypeAndVersion)
*uc.MasterVMs = append(*uc.MasterVMs, vm)
} else {
if err := uc.upgradable(vmOrchestratorTypeAndVersion); err != nil {
return err
}
uc.addVMToAgentPool(vm, true)
}
} else if vmOrchestratorTypeAndVersion == targetOrchestratorTypeVersion {
if strings.Contains(*(vm.Name), MasterVMNamePrefix) {
if !strings.Contains(*(vm.Name), uc.NameSuffix) {
uc.Logger.Infof("Not adding VM: %s to upgraded list as it does not belong to cluster with expected name suffix: %s\n",
*vm.Name, uc.NameSuffix)
continue
}
uc.Logger.Infof("Master VM name: %s, orchestrator: %s (UpgradedMasterVMs)\n", *vm.Name, vmOrchestratorTypeAndVersion)
*uc.UpgradedMasterVMs = append(*uc.UpgradedMasterVMs, vm)
} else {
uc.addVMToAgentPool(vm, false)
}
}
}
}
return nil
}
func (uc *UpgradeCluster) upgradable(vmOrchestratorTypeAndVersion string) error {
arr := strings.Split(vmOrchestratorTypeAndVersion, ":")
if len(arr) != 2 {
return errors.Errorf("Unsupported orchestrator tag format %s", vmOrchestratorTypeAndVersion)
}
currentVer, err := semver.Make(arr[1])
if err != nil {
return errors.Errorf("Unsupported orchestrator version format %s", currentVer.String())
}
csOrch := &api.OrchestratorProfile{
OrchestratorType: api.Kubernetes,
OrchestratorVersion: currentVer.String(),
}
orch, err := api.GetOrchestratorVersionProfile(csOrch, uc.DataModel.Properties.HasWindows())
if err != nil {
return err
}
for _, up := range orch.Upgrades {
if up.OrchestratorVersion == uc.DataModel.Properties.OrchestratorProfile.OrchestratorVersion {
return nil
}
}
return errors.Errorf("%s cannot be upgraded to %s", vmOrchestratorTypeAndVersion, uc.DataModel.Properties.OrchestratorProfile.OrchestratorVersion)
}
func (uc *UpgradeCluster) addVMToAgentPool(vm compute.VirtualMachine, isUpgradableVM bool) error {
var poolIdentifier string
var poolPrefix string
var err error
if vm.Tags == nil || vm.Tags["poolName"] == nil {
uc.Logger.Infof("poolName tag not found for VM: %s skipping.\n", *vm.Name)
return nil
}
vmPoolName := *vm.Tags["poolName"]
uc.Logger.Infof("Evaluating VM: %s in pool: %s...\n", *vm.Name, vmPoolName)
if vmPoolName == "" {
uc.Logger.Infof("VM: %s does not contain `poolName` tag, skipping.\n", *vm.Name)
return nil
} else if !uc.AgentPoolsToUpgrade[vmPoolName] {
uc.Logger.Infof("Skipping upgrade of VM: %s in pool: %s.\n", *vm.Name, vmPoolName)
return nil
}
if vm.StorageProfile.OsDisk.OsType == compute.Linux {
poolIdentifier, poolPrefix, _, err = utils.K8sLinuxVMNameParts(*vm.Name)
if err != nil {
uc.Logger.Errorf(err.Error())
return err
}
if !strings.EqualFold(uc.NameSuffix, poolPrefix) {
uc.Logger.Infof("Skipping VM: %s for upgrade as it does not belong to cluster with expected name suffix: %s\n",
*vm.Name, uc.NameSuffix)
return nil
}
} else if vm.StorageProfile.OsDisk.OsType == compute.Windows {
poolPrefix, _, _, _, err := utils.WindowsVMNameParts(*vm.Name)
if err != nil {
uc.Logger.Errorf(err.Error())
return err
}
//The k8s Windows VM Naming Format is "^([a-fA-F0-9]{5})([0-9a-zA-Z]{3})([a-zA-Z0-9]{4,6})$" (i.e.: 50621k8s9000)
//The pool identifier is made of the first 11 characters
poolIdentifier = (*vm.Name)[:11]
if !strings.Contains(uc.NameSuffix, poolPrefix) {
uc.Logger.Infof("Skipping VM: %s for upgrade as it does not belong to cluster with expected name suffix: %s\n",
*vm.Name, uc.NameSuffix)
return nil
}
}
if uc.AgentPools[poolIdentifier] == nil {
uc.AgentPools[poolIdentifier] =
&AgentPoolTopology{&poolIdentifier, vm.Tags["poolName"], &[]compute.VirtualMachine{}, &[]compute.VirtualMachine{}}
}
if isUpgradableVM {
uc.Logger.Infof("Adding Agent VM: %s, orchestrator: %s to pool: %s (AgentVMs)\n",
*vm.Name, *vm.Tags["orchestrator"], poolIdentifier)
*uc.AgentPools[poolIdentifier].AgentVMs = append(*uc.AgentPools[poolIdentifier].AgentVMs, vm)
} else {
uc.Logger.Infof("Adding Agent VM: %s, orchestrator: %s to pool: %s (UpgradedAgentVMs)\n",
*vm.Name, *vm.Tags["orchestrator"], poolIdentifier)
*uc.AgentPools[poolIdentifier].UpgradedAgentVMs = append(*uc.AgentPools[poolIdentifier].UpgradedAgentVMs, vm)
}
return nil
}
/* WriteTemplate writes upgrade template to a folder
func WriteTemplate(
translator *i18n.Translator,
upgradeContainerService *api.ContainerService,
templateMap map[string]interface{}, parametersMap map[string]interface{}) {
updatedTemplateJSON, _ := json.Marshal(templateMap)
parametersJSON, _ := json.Marshal(parametersMap)
templateapp, err := acsengine.PrettyPrintArmTemplate(string(updatedTemplateJSON))
if err != nil {
logrus.Fatalf("error pretty printing template: %s \n", err.Error())
}
parametersapp, e := acsengine.PrettyPrintJSON(string(parametersJSON))
if e != nil {
logrus.Fatalf("error pretty printing template parameters: %s \n", e.Error())
}
outputDirectory := path.Join("_output", upgradeContainerService.Properties.MasterProfile.DNSPrefix, "Upgrade")
writer := &acsengine.ArtifactWriter{
Translator: translator,
}
if err := writer.WriteTLSArtifacts(upgradeContainerService, "vlabs", templateapp, parametersapp, outputDirectory, false, false); err != nil {
logrus.Fatalf("error writing artifacts: %s\n", err.Error())
}
}*/