spiegel_podman/test/e2e/checkpoint_test.go
Adrian Reber 5aa89c88f9 Checkpoint/Restore test fixes
Moving to Fedora 35 showed test failures (time outs) in the test

"podman checkpoint and restore container with different port mappings"

The test starts a container and maps the internal port 6379 to the local
port 1234 ('-p 1234:6379') and then tries to connect to localhost:1234

On Fedora 35 this failed and blocked the test because the container was
not yet ready. The test was trying to connect to localhost:1234 but
nothing was running there. So the error was not checkpointing related.

Before trying to connect to the container the test is now waiting for
the container to be ready.

Another problem with this test and running ginkgo in parallel was that
it was possible that the port was already in use. Now for each run a
random port is selected to decrease the chance of collisions.

Signed-off-by: Adrian Reber <areber@redhat.com>
2021-10-19 15:56:35 -04:00

1159 lines
42 KiB
Go

package integration
import (
"fmt"
"net"
"os"
"os/exec"
"strings"
"time"
"github.com/containers/podman/v3/pkg/checkpoint/crutils"
"github.com/containers/podman/v3/pkg/criu"
. "github.com/containers/podman/v3/test/utils"
"github.com/containers/podman/v3/utils"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
. "github.com/onsi/gomega/gexec"
)
func getRunString(input []string) []string {
// CRIU does not work with seccomp correctly on RHEL7 : seccomp=unconfined
runString := []string{"run", "-it", "--security-opt", "seccomp=unconfined", "-d", "--ip", GetRandomIPAddress()}
return append(runString, input...)
}
var _ = Describe("Podman checkpoint", func() {
var (
tempdir string
err error
podmanTest *PodmanTestIntegration
)
BeforeEach(func() {
SkipIfRemote("checkpoint not supported in remote mode")
SkipIfRootless("checkpoint not supported in rootless mode")
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", "--help")
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(criu.MinCriuVersion) {
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).To(ExitWithError())
})
It("podman restore bogus container", func() {
session := podmanTest.Podman([]string{"container", "restore", "foobar"})
session.WaitWithDefaultTimeout()
Expect(session).To(ExitWithError())
})
It("podman checkpoint a running container by id", func() {
localRunString := getRunString([]string{ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
cid := session.OutputToString()
result := podmanTest.Podman([]string{"container", "checkpoint", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
inspect := podmanTest.Podman([]string{"inspect", cid})
inspect.WaitWithDefaultTimeout()
Expect(inspect).Should(Exit(0))
inspectOut := inspect.InspectContainerToJSON()
Expect(inspectOut[0].State.Checkpointed).To(BeTrue())
result = podmanTest.Podman([]string{"container", "restore", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
})
It("podman checkpoint a running container by name", func() {
localRunString := getRunString([]string{"--name", "test_name", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
result := podmanTest.Podman([]string{"container", "checkpoint", "test_name"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(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).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
})
It("podman pause a checkpointed container by id", func() {
localRunString := getRunString([]string{ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
cid := session.OutputToString()
result := podmanTest.Podman([]string{"container", "checkpoint", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
result = podmanTest.Podman([]string{"pause", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(125))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
result = podmanTest.Podman([]string{"container", "restore", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
result = podmanTest.Podman([]string{"rm", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(2))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
result = podmanTest.Podman([]string{"rm", "-f", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
})
It("podman checkpoint latest running container", func() {
localRunString := getRunString([]string{"--name", "first", ALPINE, "top"})
session1 := podmanTest.Podman(localRunString)
session1.WaitWithDefaultTimeout()
Expect(session1).Should(Exit(0))
localRunString = getRunString([]string{"--name", "second", ALPINE, "top"})
session2 := podmanTest.Podman(localRunString)
session2.WaitWithDefaultTimeout()
Expect(session2).Should(Exit(0))
result := podmanTest.Podman([]string{"container", "checkpoint", "-l"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
ps := podmanTest.Podman([]string{"ps", "-q", "--no-trunc"})
ps.WaitWithDefaultTimeout()
Expect(ps).Should(Exit(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).Should(Exit(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).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
})
It("podman checkpoint all running container", func() {
localRunString := getRunString([]string{"--name", "first", ALPINE, "top"})
session1 := podmanTest.Podman(localRunString)
session1.WaitWithDefaultTimeout()
Expect(session1).Should(Exit(0))
localRunString = getRunString([]string{"--name", "second", ALPINE, "top"})
session2 := podmanTest.Podman(localRunString)
session2.WaitWithDefaultTimeout()
Expect(session2).Should(Exit(0))
result := podmanTest.Podman([]string{"container", "checkpoint", "-a"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
ps := podmanTest.Podman([]string{"ps", "-q", "--no-trunc"})
ps.WaitWithDefaultTimeout()
Expect(ps).Should(Exit(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).Should(Exit(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).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
})
It("podman checkpoint container with established tcp connections", func() {
// Broken on Ubuntu.
SkipIfNotFedora()
localRunString := getRunString([]string{redis})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
cid := session.OutputToString()
if !WaitContainerReady(podmanTest, cid, "Ready to accept connections", 20, 1) {
Fail("Container failed to get ready")
}
IP := podmanTest.Podman([]string{"inspect", "-l", "--format={{.NetworkSettings.IPAddress}}"})
IP.WaitWithDefaultTimeout()
Expect(IP).Should(Exit(0))
// Open a network connection to the redis server
conn, err := net.DialTimeout("tcp4", IP.OutputToString()+":6379", time.Duration(3)*time.Second)
Expect(err).To(BeNil())
// This should fail as the container has established TCP connections
result := podmanTest.Podman([]string{"container", "checkpoint", "-l"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(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).Should(Exit(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).Should(Exit(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).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
conn.Close()
})
It("podman checkpoint with --leave-running", func() {
localRunString := getRunString([]string{ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
cid := session.OutputToString()
// Checkpoint container, but leave it running
result := podmanTest.Podman([]string{"container", "checkpoint", "--leave-running", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(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).Should(Exit(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).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
})
It("podman checkpoint and restore container with same IP", func() {
localRunString := getRunString([]string{"--name", "test_name", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
IPBefore := podmanTest.Podman([]string{"inspect", "-l", "--format={{.NetworkSettings.IPAddress}}"})
IPBefore.WaitWithDefaultTimeout()
Expect(IPBefore).Should(Exit(0))
MACBefore := podmanTest.Podman([]string{"inspect", "-l", "--format={{.NetworkSettings.MacAddress}}"})
MACBefore.WaitWithDefaultTimeout()
Expect(MACBefore).Should(Exit(0))
result := podmanTest.Podman([]string{"container", "checkpoint", "test_name"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(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).Should(Exit(0))
MACAfter := podmanTest.Podman([]string{"inspect", "-l", "--format={{.NetworkSettings.MacAddress}}"})
MACAfter.WaitWithDefaultTimeout()
Expect(MACAfter).Should(Exit(0))
// Check that IP address did not change between checkpointing and restoring
Expect(IPBefore.OutputToString()).To(Equal(IPAfter.OutputToString()))
// Check that MAC address did not change between checkpointing and restoring
Expect(MACBefore.OutputToString()).To(Equal(MACAfter.OutputToString()))
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(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() {
localRunString := getRunString([]string{"--rm", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
cid := session.OutputToString()
fileName := "/tmp/checkpoint-" + cid + ".tar.gz"
result := podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName})
result.WaitWithDefaultTimeout()
// As the container has been started with '--rm' it will be completely
// cleaned up after checkpointing.
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore container the first time with different name.
// Using '--ignore-static-ip' as for parallel test runs
// each containers gets a random IP address via '--ip'.
// '--ignore-static-ip' tells the restore to use the next
// available IP address.
// First restore the container with a new name/ID to make
// sure nothing in the restored container depends on the
// original container.
result = podmanTest.Podman([]string{"container", "restore", "-i", fileName, "-n", "restore_again", "--ignore-static-ip"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"container", "restore", "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(2))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Remove exported checkpoint
os.Remove(fileName)
})
// This test does the same steps which are necessary for migrating
// a container from one host to another
It("podman checkpoint container with export and different compression algorithms", func() {
localRunString := getRunString([]string{"--rm", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
cid := session.OutputToString()
fileName := "/tmp/checkpoint-" + cid + ".tar"
// Checkpoint with the default algorithm
result := podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName})
result.WaitWithDefaultTimeout()
// As the container has been started with '--rm' it will be completely
// cleaned up after checkpointing.
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore container
result = podmanTest.Podman([]string{"container", "restore", "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Checkpoint with the zstd algorithm
result = podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName, "--compress", "zstd"})
result.WaitWithDefaultTimeout()
// As the container has been started with '--rm' it will be completely
// cleaned up after checkpointing.
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore container
result = podmanTest.Podman([]string{"container", "restore", "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Checkpoint with the none algorithm
result = podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName, "-c", "none"})
result.WaitWithDefaultTimeout()
// As the container has been started with '--rm' it will be completely
// cleaned up after checkpointing.
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore container
result = podmanTest.Podman([]string{"container", "restore", "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Checkpoint with the gzip algorithm
result = podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName, "-c", "gzip"})
result.WaitWithDefaultTimeout()
// As the container has been started with '--rm' it will be completely
// cleaned up after checkpointing.
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore container
result = podmanTest.Podman([]string{"container", "restore", "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Checkpoint with the non-existing algorithm
result = podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName, "-c", "non-existing"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(125))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.NumberOfContainers()).To(Equal(1))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Remove exported checkpoint
os.Remove(fileName)
})
It("podman checkpoint and restore container with root file-system changes", func() {
// Start the container
localRunString := getRunString([]string{"--rm", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
cid := session.OutputToString()
fileName := "/tmp/checkpoint-" + cid + ".tar.gz"
// Change the container's root file-system
result := podmanTest.Podman([]string{"exec", "-l", "/bin/sh", "-c", "echo test" + cid + "test > /test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
result = podmanTest.Podman([]string{"exec", "-l", "/bin/sh", "-c", "rm /etc/motd"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
result = podmanTest.Podman([]string{"diff", "-l"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(result.OutputToString()).To(ContainSubstring("C /etc"))
Expect(result.OutputToString()).To(ContainSubstring("A /test.output"))
Expect(result.OutputToString()).To(ContainSubstring("D /etc/motd"))
Expect(len(result.OutputToStringArray())).To(Equal(3))
// Checkpoint the container
result = podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore the container
result = podmanTest.Podman([]string{"container", "restore", "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.NumberOfContainers()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Verify the changes to the container's root file-system
result = podmanTest.Podman([]string{"exec", "-l", "cat", "/test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(result.OutputToString()).To(ContainSubstring("test" + cid + "test"))
result = podmanTest.Podman([]string{"diff", "-l"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(result.OutputToString()).To(ContainSubstring("C /etc"))
Expect(result.OutputToString()).To(ContainSubstring("A /test.output"))
Expect(result.OutputToString()).To(ContainSubstring("D /etc/motd"))
Expect(len(result.OutputToStringArray())).To(Equal(3))
// Remove exported checkpoint
os.Remove(fileName)
})
It("podman checkpoint and restore container with root file-system changes using --ignore-rootfs during restore", func() {
// Start the container
localRunString := getRunString([]string{"--rm", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
cid := session.OutputToString()
fileName := "/tmp/checkpoint-" + cid + ".tar.gz"
// Change the container's root file-system
result := podmanTest.Podman([]string{"exec", "-l", "/bin/sh", "-c", "echo test" + cid + "test > /test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
// Checkpoint the container
result = podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore the container
result = podmanTest.Podman([]string{"container", "restore", "--ignore-rootfs", "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.NumberOfContainers()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Verify the changes to the container's root file-system
result = podmanTest.Podman([]string{"exec", "-l", "cat", "/test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(1))
Expect(result.ErrorToString()).To(ContainSubstring("cat: can't open '/test.output': No such file or directory"))
// Remove exported checkpoint
os.Remove(fileName)
})
It("podman checkpoint and restore container with root file-system changes using --ignore-rootfs during checkpoint", func() {
// Start the container
localRunString := getRunString([]string{"--rm", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
cid := session.OutputToString()
fileName := "/tmp/checkpoint-" + cid + ".tar.gz"
// Change the container's root file-system
result := podmanTest.Podman([]string{"exec", "-l", "/bin/sh", "-c", "echo test" + cid + "test > /test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
// Checkpoint the container
result = podmanTest.Podman([]string{"container", "checkpoint", "--ignore-rootfs", "-l", "-e", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore the container
result = podmanTest.Podman([]string{"container", "restore", "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.NumberOfContainers()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Verify the changes to the container's root file-system
result = podmanTest.Podman([]string{"exec", "-l", "cat", "/test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(1))
Expect(result.ErrorToString()).To(ContainSubstring("cat: can't open '/test.output': No such file or directory"))
// Remove exported checkpoint
os.Remove(fileName)
})
It("podman checkpoint and run exec in restored container", func() {
// Start the container
localRunString := getRunString([]string{"--rm", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
cid := session.OutputToString()
fileName := "/tmp/checkpoint-" + cid + ".tar.gz"
// Checkpoint the container
result := podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore the container
result = podmanTest.Podman([]string{"container", "restore", "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.NumberOfContainers()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Exec in the container
result = podmanTest.Podman([]string{"exec", "-l", "/bin/sh", "-c", "echo " + cid + " > /test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
result = podmanTest.Podman([]string{"exec", "-l", "cat", "/test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(result.OutputToString()).To(ContainSubstring(cid))
// Remove exported checkpoint
os.Remove(fileName)
})
It("podman checkpoint a container started with --rm", func() {
// Start the container
localRunString := getRunString([]string{"--rm", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
cid := session.OutputToString()
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
// Checkpoint the container - this should fail as it was started with --rm
result := podmanTest.Podman([]string{"container", "checkpoint", "-l"})
result.WaitWithDefaultTimeout()
Expect(result).To(ExitWithError())
Expect(result.ErrorToString()).To(ContainSubstring("cannot checkpoint containers that have been started with '--rm'"))
// Checkpointing with --export should still work
fileName := "/tmp/checkpoint-" + cid + ".tar.gz"
result = podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName})
result.WaitWithDefaultTimeout()
// As the container has been started with '--rm' it will be completely
// cleaned up after checkpointing.
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
result = podmanTest.Podman([]string{"container", "restore", "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Remove exported checkpoint
os.Remove(fileName)
})
It("podman checkpoint a container with volumes", func() {
session := podmanTest.Podman([]string{
"build", "-f", "build/basicalpine/Containerfile.volume", "-t", "test-cr-volume",
})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// Start the container
localRunString := getRunString([]string{
"--rm",
"-v", "/volume1",
"-v", "my-test-vol:/volume2",
"test-cr-volume",
"top",
})
session = podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
cid := session.OutputToString()
// Add file in volume0
result := podmanTest.Podman([]string{
"exec", "-l", "/bin/sh", "-c", "echo " + cid + " > /volume0/test.output",
})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
// Add file in volume1
result = podmanTest.Podman([]string{
"exec", "-l", "/bin/sh", "-c", "echo " + cid + " > /volume1/test.output",
})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
// Add file in volume2
result = podmanTest.Podman([]string{
"exec", "-l", "/bin/sh", "-c", "echo " + cid + " > /volume2/test.output",
})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
checkpointFileName := "/tmp/checkpoint-" + cid + ".tar.gz"
// Checkpoint the container
result = podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", checkpointFileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore container should fail because named volume still exists
result = podmanTest.Podman([]string{"container", "restore", "-i", checkpointFileName})
result.WaitWithDefaultTimeout()
Expect(result).To(ExitWithError())
Expect(result.ErrorToString()).To(ContainSubstring(
"volume with name my-test-vol already exists. Use --ignore-volumes to not restore content of volumes",
))
// Remove named volume
session = podmanTest.Podman([]string{"volume", "rm", "my-test-vol"})
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
// Restoring container
result = podmanTest.Podman([]string{"container", "restore", "-i", checkpointFileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.NumberOfContainers()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Validate volume0 content
result = podmanTest.Podman([]string{"exec", "-l", "cat", "/volume0/test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(result.OutputToString()).To(ContainSubstring(cid))
// Validate volume1 content
result = podmanTest.Podman([]string{"exec", "-l", "cat", "/volume1/test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(result.OutputToString()).To(ContainSubstring(cid))
// Validate volume2 content
result = podmanTest.Podman([]string{"exec", "-l", "cat", "/volume2/test.output"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(result.OutputToString()).To(ContainSubstring(cid))
// Remove exported checkpoint
os.Remove(checkpointFileName)
})
It("podman checkpoint container with --pre-checkpoint", func() {
if !strings.Contains(podmanTest.OCIRuntime, "runc") {
Skip("Test only works on runc 1.0-rc3 or higher.")
}
localRunString := getRunString([]string{ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
cid := session.OutputToString()
result := podmanTest.Podman([]string{"container", "checkpoint", "-P", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"container", "checkpoint", "--with-previous", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
result = podmanTest.Podman([]string{"container", "restore", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
})
It("podman checkpoint container with --pre-checkpoint and export (migration)", func() {
if !strings.Contains(podmanTest.OCIRuntime, "runc") {
Skip("Test only works on runc 1.0-rc3 or higher.")
}
localRunString := getRunString([]string{ALPINE, "top"})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
cid := session.OutputToString()
preCheckpointFileName := "/tmp/pre-checkpoint-" + cid + ".tar.gz"
checkpointFileName := "/tmp/checkpoint-" + cid + ".tar.gz"
result := podmanTest.Podman([]string{"container", "checkpoint", "-P", "-e", preCheckpointFileName, cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{"container", "checkpoint", "--with-previous", "-e", checkpointFileName, cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Exited"))
result = podmanTest.Podman([]string{"rm", "-f", cid})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
result = podmanTest.Podman([]string{"container", "restore", "-i", checkpointFileName, "--import-previous", preCheckpointFileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
os.Remove(checkpointFileName)
os.Remove(preCheckpointFileName)
})
It("podman checkpoint and restore container with different port mappings", func() {
randomPort, err := utils.GetRandomPort()
Expect(err).ShouldNot(HaveOccurred())
localRunString := getRunString([]string{"-p", fmt.Sprintf("%d:6379", randomPort), "--rm", redis})
session := podmanTest.Podman(localRunString)
session.WaitWithDefaultTimeout()
Expect(session).Should(Exit(0))
cid := session.OutputToString()
fileName := "/tmp/checkpoint-" + cid + ".tar.gz"
if !WaitContainerReady(podmanTest, cid, "Ready to accept connections", 20, 1) {
Fail("Container failed to get ready")
}
fmt.Fprintf(os.Stderr, "Trying to connect to redis server at localhost:%d", randomPort)
// Open a network connection to the redis server via initial port mapping
conn, err := net.DialTimeout("tcp4", fmt.Sprintf("localhost:%d", randomPort), time.Duration(3)*time.Second)
Expect(err).ShouldNot(HaveOccurred())
conn.Close()
// Checkpoint the container
result := podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName})
result.WaitWithDefaultTimeout()
// As the container has been started with '--rm' it will be completely
// cleaned up after checkpointing.
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Restore container with different port mapping
newRandomPort, err := utils.GetRandomPort()
Expect(err).ShouldNot(HaveOccurred())
result = podmanTest.Podman([]string{"container", "restore", "-p", fmt.Sprintf("%d:6379", newRandomPort), "-i", fileName})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
// Open a network connection to the redis server via initial port mapping
// This should fail
conn, err = net.DialTimeout("tcp4", fmt.Sprintf("localhost:%d", randomPort), time.Duration(3)*time.Second)
Expect(err.Error()).To(ContainSubstring("connection refused"))
// Open a network connection to the redis server via new port mapping
fmt.Fprintf(os.Stderr, "Trying to reconnect to redis server at localhost:%d", newRandomPort)
conn, err = net.DialTimeout("tcp4", fmt.Sprintf("localhost:%d", newRandomPort), time.Duration(3)*time.Second)
Expect(err).ShouldNot(HaveOccurred())
conn.Close()
result = podmanTest.Podman([]string{"rm", "-fa"})
result.WaitWithDefaultTimeout()
Expect(result).Should(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(0))
Expect(podmanTest.NumberOfContainers()).To(Equal(0))
// Remove exported checkpoint
os.Remove(fileName)
})
namespaceCombination := []string{
"cgroup,ipc,net,uts,pid",
"cgroup,ipc,net,uts",
"cgroup,ipc,net",
"cgroup,ipc",
"ipc,net,uts,pid",
"ipc,net,uts",
"ipc,net",
"net,uts,pid",
"net,uts",
"uts,pid",
}
for _, share := range namespaceCombination {
testName := fmt.Sprintf(
"podman checkpoint and restore container out of and into pod (%s)",
share,
)
It(testName, func() {
if !criu.CheckForCriu(criu.PodCriuVersion) {
Skip("CRIU is missing or too old.")
}
if !crutils.CRRuntimeSupportsPodCheckpointRestore(podmanTest.OCIRuntime) {
Skip("runtime does not support pod restore")
}
// Create a pod
session := podmanTest.Podman([]string{
"pod",
"create",
"--share",
share,
})
session.WaitWithDefaultTimeout()
Expect(session).To(Exit(0))
podID := session.OutputToString()
session = podmanTest.Podman([]string{
"run",
"-d",
"--rm",
"--pod",
podID,
ALPINE,
"top",
})
session.WaitWithDefaultTimeout()
Expect(session).To(Exit(0))
cid := session.OutputToString()
fileName := "/tmp/checkpoint-" + cid + ".tar.gz"
// Checkpoint the container
result := podmanTest.Podman([]string{
"container",
"checkpoint",
"-e",
fileName,
cid,
})
result.WaitWithDefaultTimeout()
// As the container has been started with '--rm' it will be completely
// cleaned up after checkpointing.
Expect(result).To(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.NumberOfContainers()).To(Equal(1))
// Remove the pod and create a new pod
result = podmanTest.Podman([]string{
"pod",
"rm",
podID,
})
result.WaitWithDefaultTimeout()
Expect(result).To(Exit(0))
// First create a pod with different shared namespaces.
// Restore should fail
wrongShare := share[:strings.LastIndex(share, ",")]
session = podmanTest.Podman([]string{
"pod",
"create",
"--share",
wrongShare,
})
session.WaitWithDefaultTimeout()
Expect(session).To(Exit(0))
podID = session.OutputToString()
// Restore container with different port mapping
result = podmanTest.Podman([]string{
"container",
"restore",
"--pod",
podID,
"-i",
fileName,
})
result.WaitWithDefaultTimeout()
Expect(result).To(Exit(125))
Expect(result.ErrorToString()).To(ContainSubstring("does not share the"))
// Remove the pod and create a new pod
result = podmanTest.Podman([]string{
"pod",
"rm",
podID,
})
result.WaitWithDefaultTimeout()
Expect(result).To(Exit(0))
session = podmanTest.Podman([]string{
"pod",
"create",
"--share",
share,
})
session.WaitWithDefaultTimeout()
Expect(session).To(Exit(0))
podID = session.OutputToString()
// Restore container with different port mapping
result = podmanTest.Podman([]string{
"container",
"restore",
"--pod",
podID,
"-i",
fileName,
})
result.WaitWithDefaultTimeout()
Expect(result).To(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(2))
Expect(podmanTest.GetContainerStatus()).To(ContainSubstring("Up"))
result = podmanTest.Podman([]string{
"rm",
"-f",
result.OutputToString(),
})
result.WaitWithDefaultTimeout()
Expect(result).To(Exit(0))
Expect(podmanTest.NumberOfContainersRunning()).To(Equal(1))
Expect(podmanTest.NumberOfContainers()).To(Equal(1))
result = podmanTest.Podman([]string{
"pod",
"rm",
"-fa",
})
result.WaitWithDefaultTimeout()
Expect(result).To(Exit(0))
// Remove exported checkpoint
os.Remove(fileName)
})
}
})