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
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
|
// +build !remoteclient
package integration
import (
"net"
"os"
"os/exec"
"github.com/containers/libpod/pkg/criu"
. "github.com/containers/libpod/test/utils"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Podman checkpoint", func() {
var (
tempdir string
err error
podmanTest *PodmanTestIntegration
)
BeforeEach(func() {
SkipIfRootless()
tempdir, err = CreateTempDirInTempDir()
if err != nil {
os.Exit(1)
}
podmanTest = PodmanTestCreate(tempdir)
podmanTest.Setup()
podmanTest.SeedImages()
// Check if the runtime implements checkpointing. Currently only
// runc's checkpoint/restore implementation is supported.
cmd := exec.Command(podmanTest.OCIRuntime, "checkpoint", "-h")
if err := cmd.Start(); err != nil {
Skip("OCI runtime does not support checkpoint/restore")
}
if err := cmd.Wait(); err != nil {
Skip("OCI runtime does not support checkpoint/restore")
}
if !criu.CheckForCriu() {
Skip("CRIU is missing or too old.")
}
// Only Fedora 29 and newer has a new enough selinux-policy and
// container-selinux package to support CRIU in correctly
// restoring threaded processes
hostInfo := podmanTest.Host
if hostInfo.Distribution == "fedora" && hostInfo.Version < "29" {
Skip("Checkpoint/Restore with SELinux only works on Fedora >= 29")
}
})
AfterEach(func() {
podmanTest.Cleanup()
f := CurrentGinkgoTestDescription()
processTestResult(f)
})
It("podman checkpoint bogus container", func() {
session := podmanTest.Podman([]string{"container", "checkpoint", "foobar"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Not(Equal(0)))
})
It("podman restore bogus container", func() {
session := podmanTest.Podman([]string{"container", "restore", "foobar"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Not(Equal(0)))
})
It("podman checkpoint a running container by id", func() {
// CRIU does not work with seccomp correctly on RHEL7
session := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "-d", ALPINE, "top"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
cid := session.OutputToString()
result := podmanTest.Podman([]string{"container", "checkpoint", cid})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
result = podmanTest.Podman([]string{"container", "restore", cid})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
})
It("podman checkpoint a running container by name", func() {
session := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "--name", "test_name", "-d", ALPINE, "top"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
result := podmanTest.Podman([]string{"container", "checkpoint", "test_name"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
result = podmanTest.Podman([]string{"container", "restore", "test_name"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
})
It("podman pause a checkpointed container by id", func() {
session := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "-d", ALPINE, "top"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
cid := session.OutputToString()
result := podmanTest.Podman([]string{"container", "checkpoint", cid})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
result = podmanTest.Podman([]string{"pause", cid})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(125))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
result = podmanTest.Podman([]string{"container", "restore", cid})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
result = podmanTest.Podman([]string{"rm", cid})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(125))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
result = podmanTest.Podman([]string{"rm", "-f", cid})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
})
It("podman checkpoint latest running container", func() {
session1 := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "--name", "first", "-d", ALPINE, "top"})
session1.WaitWithDefaultTimeout()
Expect(session1.ExitCode()).To(Equal(0))
session2 := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "--name", "second", "-d", ALPINE, "top"})
session2.WaitWithDefaultTimeout()
Expect(session2.ExitCode()).To(Equal(0))
result := podmanTest.Podman([]string{"container", "checkpoint", "-l"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
ps := podmanTest.Podman([]string{"ps", "-q", "--no-trunc"})
ps.WaitWithDefaultTimeout()
Expect(ps.ExitCode()).To(Equal(0))
Expect(ps.LineInOutputContains(session1.OutputToString())).To(BeTrue())
Expect(ps.LineInOutputContains(session2.OutputToString())).To(BeFalse())
result = podmanTest.Podman([]string{"container", "restore", "-l"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(2))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
Expect(podmanTest.GetContainerStatus()).To(Not(ContainSubstring("Exited")))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
})
It("podman checkpoint all running container", func() {
session1 := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "--name", "first", "-d", ALPINE, "top"})
session1.WaitWithDefaultTimeout()
Expect(session1.ExitCode()).To(Equal(0))
session2 := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "--name", "second", "-d", ALPINE, "top"})
session2.WaitWithDefaultTimeout()
Expect(session2.ExitCode()).To(Equal(0))
result := podmanTest.Podman([]string{"container", "checkpoint", "-a"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
ps := podmanTest.Podman([]string{"ps", "-q", "--no-trunc"})
ps.WaitWithDefaultTimeout()
Expect(ps.ExitCode()).To(Equal(0))
Expect(ps.LineInOutputContains(session1.OutputToString())).To(BeFalse())
Expect(ps.LineInOutputContains(session2.OutputToString())).To(BeFalse())
result = podmanTest.Podman([]string{"container", "restore", "-a"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(2))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
Expect(podmanTest.GetContainerStatus()).To(Not(ContainSubstring("Exited")))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
})
It("podman checkpoint container with established tcp connections", func() {
session := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "-d", redis})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
IP := podmanTest.Podman([]string{"inspect", "-l", "--format={{.NetworkSettings.IPAddress}}"})
IP.WaitWithDefaultTimeout()
Expect(IP.ExitCode()).To(Equal(0))
// Open a network connection to the redis server
conn, err := net.Dial("tcp", IP.OutputToString()+":6379")
if err != nil {
os.Exit(1)
}
// This should fail as the container has established TCP connections
result := podmanTest.Podman([]string{"container", "checkpoint", "-l"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(125))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Now it should work thanks to "--tcp-established"
result = podmanTest.Podman([]string{"container", "checkpoint", "-l", "--tcp-established"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
// Restore should fail as the checkpoint image contains established TCP connections
result = podmanTest.Podman([]string{"container", "restore", "-l"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(125))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
// Now it should work thanks to "--tcp-established"
result = podmanTest.Podman([]string{"container", "restore", "-l", "--tcp-established"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
conn.Close()
})
It("podman checkpoint with --leave-running", func() {
session := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "-d", ALPINE, "top"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
cid := session.OutputToString()
// Checkpoint container, but leave it running
result := podmanTest.Podman([]string{"container", "checkpoint", "--leave-running", cid})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
// Make sure it is still running
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Stop the container
result = podmanTest.Podman([]string{"container", "stop", cid})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
// Restore the stopped container from the previous checkpoint
result = podmanTest.Podman([]string{"container", "restore", cid})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
})
It("podman checkpoint and restore container with same IP", func() {
session := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "--name", "test_name", "-d", ALPINE, "top"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
IPBefore := podmanTest.Podman([]string{"inspect", "-l", "--format={{.NetworkSettings.IPAddress}}"})
IPBefore.WaitWithDefaultTimeout()
Expect(IPBefore.ExitCode()).To(Equal(0))
result := podmanTest.Podman([]string{"container", "checkpoint", "test_name"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
result = podmanTest.Podman([]string{"container", "restore", "test_name"})
result.WaitWithDefaultTimeout()
IPAfter := podmanTest.Podman([]string{"inspect", "-l", "--format={{.NetworkSettings.IPAddress}}"})
IPAfter.WaitWithDefaultTimeout()
Expect(IPAfter.ExitCode()).To(Equal(0))
// Check that IP address did not change between checkpointing and restoring
Expect(IPBefore.OutputToString()).To(Equal(IPAfter.OutputToString()))
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
})
// This test does the same steps which are necessary for migrating
// a container from one host to another
It("podman checkpoint container with export (migration)", func() {
// CRIU does not work with seccomp correctly on RHEL7
session := podmanTest.Podman([]string{"run", "-it", "--security-opt", "seccomp=unconfined", "-d", ALPINE, "top"})
session.WaitWithDefaultTimeout()
Expect(session.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
result := podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", "/tmp/checkpoint.tar.gz"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
// Remove all containers to simulate migration
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
result = podmanTest.Podman([]string{"container", "restore", "-i", "/tmp/checkpoint.tar.gz"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Restore container a second time with different name
result = podmanTest.Podman([]string{"container", "restore", "-i", "/tmp/checkpoint.tar.gz", "-n", "restore_again"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(2))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
// Remove exported checkpoint
os.Remove("/tmp/checkpoint.tar.gz")
})
})
|
