305 lines
10 KiB
Go
305 lines
10 KiB
Go
package container // import "github.com/docker/docker/integration/container"
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import (
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"bytes"
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"io"
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"os"
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"os/exec"
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"path/filepath"
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"strings"
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"testing"
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"time"
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containertypes "github.com/docker/docker/api/types/container"
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"github.com/docker/docker/api/types/versions"
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"github.com/docker/docker/client"
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"github.com/docker/docker/integration/internal/container"
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net "github.com/docker/docker/integration/internal/network"
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"github.com/docker/docker/pkg/stdcopy"
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"github.com/docker/docker/testutil"
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"github.com/docker/docker/testutil/daemon"
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"golang.org/x/sys/unix"
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"gotest.tools/v3/assert"
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is "gotest.tools/v3/assert/cmp"
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"gotest.tools/v3/poll"
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"gotest.tools/v3/skip"
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)
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func TestNISDomainname(t *testing.T) {
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// Older versions of the daemon would concatenate hostname and domainname,
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// so hostname "foobar" and domainname "baz.cyphar.com" would produce
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// `foobar.baz.cyphar.com` as hostname.
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skip.If(t, versions.LessThan(testEnv.DaemonAPIVersion(), "1.40"), "skip test from new feature")
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skip.If(t, testEnv.DaemonInfo.OSType != "linux")
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// Rootless supports custom Hostname but doesn't support custom Domainname
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// OCI runtime create failed: container_linux.go:349: starting container process caused "process_linux.go:449: container init caused \
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// "write sysctl key kernel.domainname: open /proc/sys/kernel/domainname: permission denied\"": unknown.
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skip.If(t, testEnv.IsRootless, "rootless mode doesn't support setting Domainname (TODO: https://github.com/moby/moby/issues/40632)")
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ctx := setupTest(t)
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apiClient := testEnv.APIClient()
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const (
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hostname = "foobar"
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domainname = "baz.cyphar.com"
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)
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cID := container.Run(ctx, t, apiClient, func(c *container.TestContainerConfig) {
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c.Config.Hostname = hostname
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c.Config.Domainname = domainname
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})
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inspect, err := apiClient.ContainerInspect(ctx, cID)
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assert.NilError(t, err)
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assert.Check(t, is.Equal(hostname, inspect.Config.Hostname))
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assert.Check(t, is.Equal(domainname, inspect.Config.Domainname))
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// Check hostname.
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res, err := container.Exec(ctx, apiClient, cID,
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[]string{"cat", "/proc/sys/kernel/hostname"})
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assert.NilError(t, err)
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assert.Assert(t, is.Len(res.Stderr(), 0))
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assert.Equal(t, 0, res.ExitCode)
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assert.Check(t, is.Equal(hostname, strings.TrimSpace(res.Stdout())))
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// Check domainname.
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res, err = container.Exec(ctx, apiClient, cID,
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[]string{"cat", "/proc/sys/kernel/domainname"})
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assert.NilError(t, err)
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assert.Assert(t, is.Len(res.Stderr(), 0))
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assert.Equal(t, 0, res.ExitCode)
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assert.Check(t, is.Equal(domainname, strings.TrimSpace(res.Stdout())))
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}
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func TestHostnameDnsResolution(t *testing.T) {
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skip.If(t, testEnv.DaemonInfo.OSType != "linux")
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ctx := setupTest(t)
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apiClient := testEnv.APIClient()
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const (
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hostname = "foobar"
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)
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// using user defined network as we want to use internal DNS
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netName := "foobar-net"
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net.CreateNoError(ctx, t, apiClient, netName, net.WithDriver("bridge"))
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cID := container.Run(ctx, t, apiClient, func(c *container.TestContainerConfig) {
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c.Config.Hostname = hostname
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c.HostConfig.NetworkMode = containertypes.NetworkMode(netName)
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})
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inspect, err := apiClient.ContainerInspect(ctx, cID)
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assert.NilError(t, err)
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assert.Check(t, is.Equal(hostname, inspect.Config.Hostname))
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// Clear hosts file so ping will use DNS for hostname resolution
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res, err := container.Exec(ctx, apiClient, cID,
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[]string{"sh", "-c", "echo 127.0.0.1 localhost | tee /etc/hosts && ping -c 1 foobar"})
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assert.NilError(t, err)
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assert.Check(t, is.Equal("", res.Stderr()))
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assert.Equal(t, 0, res.ExitCode)
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}
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func TestUnprivilegedPortsAndPing(t *testing.T) {
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skip.If(t, testEnv.DaemonInfo.OSType != "linux")
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skip.If(t, testEnv.IsRootless, "rootless mode doesn't support setting net.ipv4.ping_group_range and net.ipv4.ip_unprivileged_port_start")
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ctx := setupTest(t)
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apiClient := testEnv.APIClient()
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cID := container.Run(ctx, t, apiClient, func(c *container.TestContainerConfig) {
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c.Config.User = "1000:1000"
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})
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// Check net.ipv4.ping_group_range.
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res, err := container.Exec(ctx, apiClient, cID, []string{"cat", "/proc/sys/net/ipv4/ping_group_range"})
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assert.NilError(t, err)
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assert.Assert(t, is.Len(res.Stderr(), 0))
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assert.Equal(t, 0, res.ExitCode)
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assert.Equal(t, `0 2147483647`, strings.TrimSpace(res.Stdout()))
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// Check net.ipv4.ip_unprivileged_port_start.
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res, err = container.Exec(ctx, apiClient, cID, []string{"cat", "/proc/sys/net/ipv4/ip_unprivileged_port_start"})
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assert.NilError(t, err)
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assert.Assert(t, is.Len(res.Stderr(), 0))
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assert.Equal(t, 0, res.ExitCode)
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assert.Equal(t, "0", strings.TrimSpace(res.Stdout()))
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}
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func TestPrivilegedHostDevices(t *testing.T) {
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// Host devices are linux only. Also it creates host devices,
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// so needs to be same host.
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skip.If(t, testEnv.IsRemoteDaemon)
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skip.If(t, testEnv.DaemonInfo.OSType != "linux")
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ctx := setupTest(t)
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apiClient := testEnv.APIClient()
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const (
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devTest = "/dev/test"
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devRootOnlyTest = "/dev/root-only/test"
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)
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// Create Null devices.
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if err := unix.Mknod(devTest, unix.S_IFCHR|0o600, int(unix.Mkdev(1, 3))); err != nil {
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t.Fatal(err)
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}
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defer os.Remove(devTest)
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if err := os.Mkdir(filepath.Dir(devRootOnlyTest), 0o700); err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(filepath.Dir(devRootOnlyTest))
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if err := unix.Mknod(devRootOnlyTest, unix.S_IFCHR|0o600, int(unix.Mkdev(1, 3))); err != nil {
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t.Fatal(err)
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}
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defer os.Remove(devRootOnlyTest)
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cID := container.Run(ctx, t, apiClient, container.WithPrivileged(true))
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// Check test device.
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res, err := container.Exec(ctx, apiClient, cID, []string{"ls", devTest})
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assert.NilError(t, err)
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assert.Equal(t, 0, res.ExitCode)
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assert.Check(t, is.Equal(strings.TrimSpace(res.Stdout()), devTest))
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// Check root-only test device.
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res, err = container.Exec(ctx, apiClient, cID, []string{"ls", devRootOnlyTest})
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assert.NilError(t, err)
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if testEnv.IsRootless() {
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assert.Equal(t, 1, res.ExitCode)
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assert.Check(t, is.Contains(res.Stderr(), "No such file or directory"))
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} else {
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assert.Equal(t, 0, res.ExitCode)
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assert.Check(t, is.Equal(strings.TrimSpace(res.Stdout()), devRootOnlyTest))
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}
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}
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func TestRunConsoleSize(t *testing.T) {
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skip.If(t, testEnv.DaemonInfo.OSType != "linux")
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skip.If(t, versions.LessThan(testEnv.DaemonAPIVersion(), "1.42"), "skip test from new feature")
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ctx := setupTest(t)
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apiClient := testEnv.APIClient()
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cID := container.Run(ctx, t, apiClient,
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container.WithTty(true),
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container.WithImage("busybox"),
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container.WithCmd("stty", "size"),
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container.WithConsoleSize(57, 123),
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)
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poll.WaitOn(t, container.IsStopped(ctx, apiClient, cID), poll.WithDelay(100*time.Millisecond))
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out, err := apiClient.ContainerLogs(ctx, cID, containertypes.LogsOptions{ShowStdout: true})
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assert.NilError(t, err)
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defer out.Close()
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var b bytes.Buffer
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_, err = io.Copy(&b, out)
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assert.NilError(t, err)
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assert.Equal(t, strings.TrimSpace(b.String()), "123 57")
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}
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func TestRunWithAlternativeContainerdShim(t *testing.T) {
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skip.If(t, testEnv.IsRemoteDaemon)
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skip.If(t, testEnv.DaemonInfo.OSType != "linux")
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ctx := testutil.StartSpan(baseContext, t)
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realShimPath, err := exec.LookPath("containerd-shim-runc-v2")
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assert.Assert(t, err)
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realShimPath, err = filepath.Abs(realShimPath)
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assert.Assert(t, err)
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// t.TempDir() can't be used here as the temporary directory returned by
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// that function cannot be accessed by the fake-root user for rootless
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// Docker. It creates a nested hierarchy of directories where the
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// outermost has permission 0700.
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shimDir, err := os.MkdirTemp("", t.Name())
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assert.Assert(t, err)
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t.Cleanup(func() {
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if err := os.RemoveAll(shimDir); err != nil {
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t.Errorf("shimDir RemoveAll cleanup: %v", err)
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}
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})
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assert.Assert(t, os.Chmod(shimDir, 0o777))
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shimDir, err = filepath.Abs(shimDir)
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assert.Assert(t, err)
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assert.Assert(t, os.Symlink(realShimPath, filepath.Join(shimDir, "containerd-shim-realfake-v42")))
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d := daemon.New(t,
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daemon.WithEnvVars("PATH="+shimDir+":"+os.Getenv("PATH")),
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daemon.WithContainerdSocket(""), // A new containerd instance needs to be started which inherits the PATH env var defined above.
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)
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d.StartWithBusybox(ctx, t)
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defer d.Stop(t)
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apiClient := d.NewClientT(t)
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cID := container.Run(ctx, t, apiClient,
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container.WithImage("busybox"),
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container.WithCmd("sh", "-c", `echo 'Hello, world!'`),
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container.WithRuntime("io.containerd.realfake.v42"),
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)
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poll.WaitOn(t, container.IsStopped(ctx, apiClient, cID), poll.WithDelay(100*time.Millisecond))
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out, err := apiClient.ContainerLogs(ctx, cID, containertypes.LogsOptions{ShowStdout: true})
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assert.NilError(t, err)
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defer out.Close()
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var b bytes.Buffer
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_, err = stdcopy.StdCopy(&b, io.Discard, out)
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assert.NilError(t, err)
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assert.Equal(t, strings.TrimSpace(b.String()), "Hello, world!")
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d.Stop(t)
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d.Start(t, "--default-runtime="+"io.containerd.realfake.v42")
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cID = container.Run(ctx, t, apiClient,
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container.WithImage("busybox"),
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container.WithCmd("sh", "-c", `echo 'Hello, world!'`),
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)
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poll.WaitOn(t, container.IsStopped(ctx, apiClient, cID), poll.WithDelay(100*time.Millisecond))
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out, err = apiClient.ContainerLogs(ctx, cID, containertypes.LogsOptions{ShowStdout: true})
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assert.NilError(t, err)
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defer out.Close()
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b.Reset()
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_, err = stdcopy.StdCopy(&b, io.Discard, out)
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assert.NilError(t, err)
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assert.Equal(t, strings.TrimSpace(b.String()), "Hello, world!")
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}
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func TestMacAddressIsAppliedToMainNetworkWithShortID(t *testing.T) {
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skip.If(t, testEnv.IsRemoteDaemon)
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skip.If(t, testEnv.DaemonInfo.OSType != "linux")
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ctx := testutil.StartSpan(baseContext, t)
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d := daemon.New(t)
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d.StartWithBusybox(ctx, t)
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defer d.Stop(t)
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apiClient, err := client.NewClientWithOpts(client.FromEnv, client.WithVersion("1.43"))
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assert.NilError(t, err)
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n := net.CreateNoError(ctx, t, apiClient, "testnet", net.WithIPAM("192.168.101.0/24", "192.168.101.1"))
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cid := container.Run(ctx, t, apiClient,
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container.WithImage("busybox:latest"),
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container.WithCmd("/bin/sleep", "infinity"),
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container.WithStopSignal("SIGKILL"),
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container.WithNetworkMode(n[:10]),
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container.WithContainerWideMacAddress("02:42:08:26:a9:55"))
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defer container.Remove(ctx, t, apiClient, cid, containertypes.RemoveOptions{Force: true})
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c := container.Inspect(ctx, t, apiClient, cid)
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assert.Equal(t, c.NetworkSettings.Networks["testnet"].MacAddress, "02:42:08:26:a9:55")
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}
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