-
Notifications
You must be signed in to change notification settings - Fork 90
/
backup.go
244 lines (206 loc) · 7.55 KB
/
backup.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
package snapshot
import (
"context"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"time"
"github.com/pkg/errors"
"github.com/replicatedhq/kots/pkg/auth"
"github.com/replicatedhq/kots/pkg/k8sutil"
"github.com/replicatedhq/kots/pkg/logger"
velerov1 "github.com/vmware-tanzu/velero/pkg/apis/velero/v1"
veleroclientv1 "github.com/vmware-tanzu/velero/pkg/generated/clientset/versioned/typed/velero/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/kubernetes"
)
type CreateInstanceBackupOptions struct {
Namespace string
Wait bool
}
type ListInstanceBackupsOptions struct {
Namespace string
}
type VeleroRBACResponse struct {
Success bool `json:"success"`
Error string `json:"error,omitempty"`
KotsadmNamespace string `json:"kotsadmNamespace,omitempty"`
KotsadmRequiresVeleroAccess bool `json:"kotsadmRequiresVeleroAccess,omitempty"`
}
func CreateInstanceBackup(ctx context.Context, options CreateInstanceBackupOptions) error {
log := logger.NewCLILogger()
log.ActionWithSpinner("Connecting to cluster")
clientset, err := k8sutil.GetClientset()
if err != nil {
log.FinishSpinnerWithError()
return errors.Wrap(err, "failed to get clientset")
}
podName, err := k8sutil.FindKotsadm(clientset, options.Namespace)
if err != nil {
log.FinishSpinnerWithError()
return errors.Wrap(err, "failed to find kotsadm pod")
}
stopCh := make(chan struct{})
defer close(stopCh)
localPort, errChan, err := k8sutil.PortForward(0, 3000, options.Namespace, podName, false, stopCh, log)
if err != nil {
log.FinishSpinnerWithError()
return errors.Wrap(err, "failed to start port forwarding")
}
go func() {
select {
case err := <-errChan:
if err != nil {
log.Error(err)
}
case <-stopCh:
}
}()
log.FinishSpinner()
log.ActionWithSpinner("Creating Backup")
authSlug, err := auth.GetOrCreateAuthSlug(clientset, options.Namespace)
if err != nil {
log.FinishSpinnerWithError()
return errors.Wrap(err, "failed to get kotsadm auth slug")
}
url := fmt.Sprintf("http://localhost:%d/api/v1/snapshot/backup", localPort)
newRequest, err := http.NewRequest("POST", url, nil)
if err != nil {
log.FinishSpinnerWithError()
return errors.Wrap(err, "failed to create instance snapshot backup request")
}
newRequest.Header.Add("Authorization", authSlug)
resp, err := http.DefaultClient.Do(newRequest)
if err != nil {
log.FinishSpinnerWithError()
return errors.Wrap(err, "failed to get from kotsadm")
}
defer resp.Body.Close()
respBody, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.FinishSpinnerWithError()
return errors.Wrap(err, "failed to read server response")
}
if resp.StatusCode != http.StatusOK {
log.FinishSpinnerWithError()
if resp.StatusCode == http.StatusConflict {
veleroRBACResponse := VeleroRBACResponse{}
if err := json.Unmarshal(respBody, &veleroRBACResponse); err != nil {
return errors.Wrap(err, "failed to unmarshal velero rbac response")
}
if veleroRBACResponse.KotsadmRequiresVeleroAccess {
log.ActionWithoutSpinner("Velero Namespace Access Required")
log.ActionWithoutSpinner("We’ve detected that the Admin Console is running with minimal role-based-access-control (RBAC) privileges, meaning that the Admin Console is limited to a single namespace. To use the snapshots functionality, the Admin Console requires access to the namespace Velero is installed in. Please make sure Velero is installed, then use the following command to provide the Admin Console with the necessary permissions to access it:\n")
log.Info("kubectl kots velero ensure-permissions --namespace %s --velero-namespace <velero-namespace>", veleroRBACResponse.KotsadmNamespace)
log.Info("* Note: Please replace `<velero-namespace>` with the actual namespace Velero is installed in, which is 'velero' by default.\n")
return nil
}
}
return errors.Errorf("unexpected status code from %s: %s", url, resp.Status)
}
type BackupResponse struct {
Success bool `json:"success"`
BackupName string `json:"backupName,omitempty"`
Error string `json:"error,omitempty"`
}
var backupResponse BackupResponse
if err := json.Unmarshal(respBody, &backupResponse); err != nil {
log.FinishSpinnerWithError()
return errors.Wrap(err, "failed to unmarshal response")
}
if backupResponse.Error != "" {
log.FinishSpinnerWithError()
return errors.New(backupResponse.Error)
}
if options.Wait {
// wait for backup to complete
backup, err := waitForVeleroBackupCompleted(ctx, clientset, backupResponse.BackupName, options.Namespace)
if err != nil {
if backup != nil {
errMsg := fmt.Sprintf("backup failed with %d errors and %d warnings.", backup.Status.Errors, backup.Status.Warnings)
log.FinishSpinnerWithError()
log.ActionWithoutSpinner(errMsg)
return errors.Wrap(err, errMsg)
}
log.FinishSpinnerWithError()
return errors.Wrap(err, "failed to wait for velero backup completed")
}
log.FinishSpinner()
log.ActionWithoutSpinner(fmt.Sprintf("Backup completed successfully. Backup name is %s", backupResponse.BackupName))
} else {
log.FinishSpinner()
log.ActionWithoutSpinner(fmt.Sprintf("Backup is in progress. Backup name is %s", backupResponse.BackupName))
}
return nil
}
func ListInstanceBackups(ctx context.Context, options ListInstanceBackupsOptions) ([]velerov1.Backup, error) {
clientset, err := k8sutil.GetClientset()
if err != nil {
return nil, errors.Wrap(err, "failed to get k8s clientset")
}
veleroNamespace, err := DetectVeleroNamespace(ctx, clientset, options.Namespace)
if err != nil {
return nil, errors.Wrap(err, "failed to detect velero namespace")
}
if veleroNamespace == "" {
return nil, errors.New("velero not found")
}
cfg, err := k8sutil.GetClusterConfig()
if err != nil {
return nil, errors.Wrap(err, "failed to get cluster config")
}
veleroClient, err := veleroclientv1.NewForConfig(cfg)
if err != nil {
return nil, errors.Wrap(err, "failed to create clientset")
}
b, err := veleroClient.Backups(veleroNamespace).List(ctx, metav1.ListOptions{})
if err != nil {
return nil, errors.Wrap(err, "failed to list backups")
}
backups := []velerov1.Backup{}
for _, backup := range b.Items {
if backup.Annotations["kots.io/instance"] != "true" {
continue
}
if options.Namespace != "" && backup.Annotations["kots.io/kotsadm-deploy-namespace"] != options.Namespace {
continue
}
backups = append(backups, backup)
}
return backups, nil
}
func waitForVeleroBackupCompleted(ctx context.Context, clientset kubernetes.Interface, backupName string, namespace string) (*velerov1.Backup, error) {
veleroNamespace, err := DetectVeleroNamespace(ctx, clientset, namespace)
if err != nil {
return nil, errors.Wrap(err, "failed to detect velero namespace")
}
if veleroNamespace == "" {
return nil, errors.New("velero not found")
}
cfg, err := k8sutil.GetClusterConfig()
if err != nil {
return nil, errors.Wrap(err, "failed to get cluster config")
}
veleroClient, err := veleroclientv1.NewForConfig(cfg)
if err != nil {
return nil, errors.Wrap(err, "failed to create clientset")
}
for {
backup, err := veleroClient.Backups(veleroNamespace).Get(ctx, backupName, metav1.GetOptions{})
if err != nil {
return nil, errors.Wrap(err, "failed to get backup")
}
switch backup.Status.Phase {
case velerov1.BackupPhaseCompleted:
return backup, nil
case velerov1.BackupPhaseFailed:
return backup, errors.New("backup failed")
case velerov1.BackupPhasePartiallyFailed:
return backup, errors.New("backup partially failed")
default:
// in progress
}
time.Sleep(time.Second)
}
}