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run_linux_test.go
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run_linux_test.go
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package container // import "github.com/docker/docker/integration/container"
import (
"bytes"
"context"
"io"
"os"
"os/exec"
"path/filepath"
"strings"
"testing"
"time"
"github.com/docker/docker/api/types"
containertypes "github.com/docker/docker/api/types/container"
"github.com/docker/docker/api/types/versions"
"github.com/docker/docker/integration/internal/container"
net "github.com/docker/docker/integration/internal/network"
"github.com/docker/docker/pkg/stdcopy"
"github.com/docker/docker/pkg/system"
"github.com/docker/docker/testutil/daemon"
"golang.org/x/sys/unix"
"gotest.tools/v3/assert"
is "gotest.tools/v3/assert/cmp"
"gotest.tools/v3/poll"
"gotest.tools/v3/skip"
)
func TestNISDomainname(t *testing.T) {
// Older versions of the daemon would concatenate hostname and domainname,
// so hostname "foobar" and domainname "baz.cyphar.com" would produce
// `foobar.baz.cyphar.com` as hostname.
skip.If(t, versions.LessThan(testEnv.DaemonAPIVersion(), "1.40"), "skip test from new feature")
skip.If(t, testEnv.DaemonInfo.OSType != "linux")
// Rootless supports custom Hostname but doesn't support custom Domainname
// OCI runtime create failed: container_linux.go:349: starting container process caused "process_linux.go:449: container init caused \
// "write sysctl key kernel.domainname: open /proc/sys/kernel/domainname: permission denied\"": unknown.
skip.If(t, testEnv.IsRootless, "rootless mode doesn't support setting Domainname (TODO: https://github.com/moby/moby/issues/40632)")
defer setupTest(t)()
client := testEnv.APIClient()
ctx := context.Background()
const (
hostname = "foobar"
domainname = "baz.cyphar.com"
)
cID := container.Run(ctx, t, client, func(c *container.TestContainerConfig) {
c.Config.Hostname = hostname
c.Config.Domainname = domainname
})
poll.WaitOn(t, container.IsInState(ctx, client, cID, "running"), poll.WithDelay(100*time.Millisecond))
inspect, err := client.ContainerInspect(ctx, cID)
assert.NilError(t, err)
assert.Check(t, is.Equal(hostname, inspect.Config.Hostname))
assert.Check(t, is.Equal(domainname, inspect.Config.Domainname))
// Check hostname.
res, err := container.Exec(ctx, client, cID,
[]string{"cat", "/proc/sys/kernel/hostname"})
assert.NilError(t, err)
assert.Assert(t, is.Len(res.Stderr(), 0))
assert.Equal(t, 0, res.ExitCode)
assert.Check(t, is.Equal(hostname, strings.TrimSpace(res.Stdout())))
// Check domainname.
res, err = container.Exec(ctx, client, cID,
[]string{"cat", "/proc/sys/kernel/domainname"})
assert.NilError(t, err)
assert.Assert(t, is.Len(res.Stderr(), 0))
assert.Equal(t, 0, res.ExitCode)
assert.Check(t, is.Equal(domainname, strings.TrimSpace(res.Stdout())))
}
func TestHostnameDnsResolution(t *testing.T) {
skip.If(t, testEnv.DaemonInfo.OSType != "linux")
defer setupTest(t)()
client := testEnv.APIClient()
ctx := context.Background()
const (
hostname = "foobar"
)
// using user defined network as we want to use internal DNS
netName := "foobar-net"
net.CreateNoError(context.Background(), t, client, netName, net.WithDriver("bridge"))
cID := container.Run(ctx, t, client, func(c *container.TestContainerConfig) {
c.Config.Hostname = hostname
c.HostConfig.NetworkMode = containertypes.NetworkMode(netName)
})
poll.WaitOn(t, container.IsInState(ctx, client, cID, "running"), poll.WithDelay(100*time.Millisecond))
inspect, err := client.ContainerInspect(ctx, cID)
assert.NilError(t, err)
assert.Check(t, is.Equal(hostname, inspect.Config.Hostname))
// Clear hosts file so ping will use DNS for hostname resolution
res, err := container.Exec(ctx, client, cID,
[]string{"sh", "-c", "echo 127.0.0.1 localhost | tee /etc/hosts && ping -c 1 foobar"})
assert.NilError(t, err)
assert.Check(t, is.Equal("", res.Stderr()))
assert.Equal(t, 0, res.ExitCode)
}
func TestUnprivilegedPortsAndPing(t *testing.T) {
skip.If(t, testEnv.DaemonInfo.OSType != "linux")
skip.If(t, testEnv.IsRootless, "rootless mode doesn't support setting net.ipv4.ping_group_range and net.ipv4.ip_unprivileged_port_start")
defer setupTest(t)()
client := testEnv.APIClient()
ctx := context.Background()
cID := container.Run(ctx, t, client, func(c *container.TestContainerConfig) {
c.Config.User = "1000:1000"
})
poll.WaitOn(t, container.IsInState(ctx, client, cID, "running"), poll.WithDelay(100*time.Millisecond))
// Check net.ipv4.ping_group_range.
res, err := container.Exec(ctx, client, cID, []string{"cat", "/proc/sys/net/ipv4/ping_group_range"})
assert.NilError(t, err)
assert.Assert(t, is.Len(res.Stderr(), 0))
assert.Equal(t, 0, res.ExitCode)
assert.Equal(t, `0 2147483647`, strings.TrimSpace(res.Stdout()))
// Check net.ipv4.ip_unprivileged_port_start.
res, err = container.Exec(ctx, client, cID, []string{"cat", "/proc/sys/net/ipv4/ip_unprivileged_port_start"})
assert.NilError(t, err)
assert.Assert(t, is.Len(res.Stderr(), 0))
assert.Equal(t, 0, res.ExitCode)
assert.Equal(t, "0", strings.TrimSpace(res.Stdout()))
}
func TestPrivilegedHostDevices(t *testing.T) {
// Host devices are linux only. Also it creates host devices,
// so needs to be same host.
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, testEnv.DaemonInfo.OSType != "linux")
defer setupTest(t)()
client := testEnv.APIClient()
ctx := context.Background()
const (
devTest = "/dev/test"
devRootOnlyTest = "/dev/root-only/test"
)
// Create Null devices.
if err := system.Mknod(devTest, unix.S_IFCHR|0600, int(system.Mkdev(1, 3))); err != nil {
t.Fatal(err)
}
defer os.Remove(devTest)
if err := os.Mkdir(filepath.Dir(devRootOnlyTest), 0700); err != nil {
t.Fatal(err)
}
defer os.RemoveAll(filepath.Dir(devRootOnlyTest))
if err := system.Mknod(devRootOnlyTest, unix.S_IFCHR|0600, int(system.Mkdev(1, 3))); err != nil {
t.Fatal(err)
}
defer os.Remove(devRootOnlyTest)
cID := container.Run(ctx, t, client, container.WithPrivileged(true))
poll.WaitOn(t, container.IsInState(ctx, client, cID, "running"), poll.WithDelay(100*time.Millisecond))
// Check test device.
res, err := container.Exec(ctx, client, cID, []string{"ls", devTest})
assert.NilError(t, err)
assert.Equal(t, 0, res.ExitCode)
assert.Check(t, is.Equal(strings.TrimSpace(res.Stdout()), devTest))
// Check root-only test device.
res, err = container.Exec(ctx, client, cID, []string{"ls", devRootOnlyTest})
assert.NilError(t, err)
if testEnv.IsRootless() {
assert.Equal(t, 1, res.ExitCode)
assert.Check(t, is.Contains(res.Stderr(), "No such file or directory"))
} else {
assert.Equal(t, 0, res.ExitCode)
assert.Check(t, is.Equal(strings.TrimSpace(res.Stdout()), devRootOnlyTest))
}
}
func TestRunConsoleSize(t *testing.T) {
skip.If(t, testEnv.DaemonInfo.OSType != "linux")
skip.If(t, versions.LessThan(testEnv.DaemonAPIVersion(), "1.42"), "skip test from new feature")
defer setupTest(t)()
client := testEnv.APIClient()
ctx := context.Background()
cID := container.Run(ctx, t, client,
container.WithTty(true),
container.WithImage("busybox"),
container.WithCmd("stty", "size"),
container.WithConsoleSize(57, 123),
)
poll.WaitOn(t, container.IsStopped(ctx, client, cID), poll.WithDelay(100*time.Millisecond))
out, err := client.ContainerLogs(ctx, cID, types.ContainerLogsOptions{ShowStdout: true})
assert.NilError(t, err)
defer out.Close()
var b bytes.Buffer
_, err = io.Copy(&b, out)
assert.NilError(t, err)
assert.Equal(t, strings.TrimSpace(b.String()), "123 57")
}
func TestRunWithAlternativeContainerdShim(t *testing.T) {
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, testEnv.DaemonInfo.OSType != "linux")
realShimPath, err := exec.LookPath("containerd-shim-runc-v2")
assert.Assert(t, err)
realShimPath, err = filepath.Abs(realShimPath)
assert.Assert(t, err)
// t.TempDir() can't be used here as the temporary directory returned by
// that function cannot be accessed by the fake-root user for rootless
// Docker. It creates a nested hierarchy of directories where the
// outermost has permission 0700.
shimDir, err := os.MkdirTemp("", t.Name())
assert.Assert(t, err)
t.Cleanup(func() {
if err := os.RemoveAll(shimDir); err != nil {
t.Errorf("shimDir RemoveAll cleanup: %v", err)
}
})
assert.Assert(t, os.Chmod(shimDir, 0777))
shimDir, err = filepath.Abs(shimDir)
assert.Assert(t, err)
assert.Assert(t, os.Symlink(realShimPath, filepath.Join(shimDir, "containerd-shim-realfake-v42")))
d := daemon.New(t,
daemon.WithEnvVars("PATH="+shimDir+":"+os.Getenv("PATH")),
daemon.WithContainerdSocket(""), // A new containerd instance needs to be started which inherits the PATH env var defined above.
)
d.StartWithBusybox(t)
defer d.Stop(t)
client := d.NewClientT(t)
ctx := context.Background()
cID := container.Run(ctx, t, client,
container.WithImage("busybox"),
container.WithCmd("sh", "-c", `echo 'Hello, world!'`),
container.WithRuntime("io.containerd.realfake.v42"),
)
poll.WaitOn(t, container.IsStopped(ctx, client, cID), poll.WithDelay(100*time.Millisecond))
out, err := client.ContainerLogs(ctx, cID, types.ContainerLogsOptions{ShowStdout: true})
assert.NilError(t, err)
defer out.Close()
var b bytes.Buffer
_, err = stdcopy.StdCopy(&b, io.Discard, out)
assert.NilError(t, err)
assert.Equal(t, strings.TrimSpace(b.String()), "Hello, world!")
d.Stop(t)
d.Start(t, "--default-runtime="+"io.containerd.realfake.v42")
cID = container.Run(ctx, t, client,
container.WithImage("busybox"),
container.WithCmd("sh", "-c", `echo 'Hello, world!'`),
)
poll.WaitOn(t, container.IsStopped(ctx, client, cID), poll.WithDelay(100*time.Millisecond))
out, err = client.ContainerLogs(ctx, cID, types.ContainerLogsOptions{ShowStdout: true})
assert.NilError(t, err)
defer out.Close()
b.Reset()
_, err = stdcopy.StdCopy(&b, io.Discard, out)
assert.NilError(t, err)
assert.Equal(t, strings.TrimSpace(b.String()), "Hello, world!")
}
func TestMacAddressIsAppliedToMainNetworkWithShortID(t *testing.T) {
skip.If(t, testEnv.IsRemoteDaemon)
skip.If(t, testEnv.DaemonInfo.OSType != "linux")
ctx := context.Background()
d := daemon.New(t)
d.StartWithBusybox(t)
defer d.Stop(t)
apiClient := d.NewClientT(t)
n := net.CreateNoError(ctx, t, apiClient, "testnet", net.WithIPAM("192.168.101.0/24", "192.168.101.1"))
cid := container.Run(ctx, t, apiClient,
container.WithImage("busybox:latest"),
container.WithCmd("/bin/sleep", "infinity"),
container.WithStopSignal("SIGKILL"),
container.WithNetworkMode(n[:10]),
container.WithMacAddress("02:42:08:26:a9:55"))
defer container.Remove(ctx, t, apiClient, cid, types.ContainerRemoveOptions{Force: true})
c := container.Inspect(ctx, t, apiClient, cid)
assert.Equal(t, c.NetworkSettings.Networks["testnet"].MacAddress, "02:42:08:26:a9:55")
}