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|
// +build !remoteclient
package integration
import (
"math/rand"
"net"
"os"
"os/exec"
"strconv"
"time"
"github.com/containers/libpod/pkg/criu"
. "github.com/containers/libpod/test/utils"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
func getRunString(input []string) []string {
// To avoid IP collisions of initialize random seed for random IP addresses
rand.Seed(time.Now().UnixNano())
ip3 := strconv.Itoa(rand.Intn(230) + GinkgoParallelNode())
ip4 := strconv.Itoa(rand.Intn(230) + GinkgoParallelNode())
// CRIU does not work with seccomp correctly on RHEL7 : seccomp=unconfined
runString := []string{"run", "-it", "--security-opt", "seccomp=unconfined", "-d", "--ip", "10.88." + ip3 + "." + ip4}
return append(runString, input...)
}
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() {
localRunString := getRunString([]string{ALPINE, "top"})
session := podmanTest.Podman(localRunString)
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() {
localRunString := getRunString([]string{"--name", "test_name", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
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() {
localRunString := getRunString([]string{ALPINE, "top"})
session := podmanTest.Podman(localRunString)
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() {
localRunString := getRunString([]string{"--name", "first", ALPINE, "top"})
session1 := podmanTest.Podman(localRunString)
session1.WaitWithDefaultTimeout()
Expect(session1.ExitCode()).To(Equal(0))
localRunString = getRunString([]string{"--name", "second", ALPINE, "top"})
session2 := podmanTest.Podman(localRunString)
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() {
localRunString := getRunString([]string{"--name", "first", ALPINE, "top"})
session1 := podmanTest.Podman(localRunString)
session1.WaitWithDefaultTimeout()
Expect(session1.ExitCode()).To(Equal(0))
localRunString = getRunString([]string{"--name", "second", ALPINE, "top"})
session2 := podmanTest.Podman(localRunString)
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() {
localRunString := getRunString([]string{redis})
session := podmanTest.Podman(localRunString)
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() {
localRunString := getRunString([]string{ALPINE, "top"})
session := podmanTest.Podman(localRunString)
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() {
localRunString := getRunString([]string{"--name", "test_name", ALPINE, "top"})
session := podmanTest.Podman(localRunString)
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))
cid := session.OutputToString()
fileName := "/tmp/checkpoint-" + cid + ".tar.gz"
result := podmanTest.Podman([]string{"container", "checkpoint", "-l", "-e", fileName})
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", fileName})
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", fileName, "-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(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.ExitCode()).To(Equal(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.ExitCode()).To(Equal(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.ExitCode()).To(Equal(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.ExitCode()).To(Equal(0))
result = podmanTest.Podman([]string{"exec", "-l", "cat", "/test.output"})
result.WaitWithDefaultTimeout()
Expect(result.ExitCode()).To(Equal(0))
Expect(result.OutputToString()).To(ContainSubstring(cid))
// Remove exported checkpoint
os.Remove(fileName)
})
})
|
