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open-nomad/drivers/docker/driver_test.go
Seth Hoenig c6c3ae020d drivers/docker: do not set cgroup parent in v1 mode 
This PR fixes a bug where the CgroupParent on the docker
HostConfig struct was accidently being set when running in
cgroups v1 mode.
2022-05-24 11:22:50 -05:00

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package docker
import (
"context"
"fmt"
"io/ioutil"
"math/rand"
"path/filepath"
"reflect"
"runtime"
"runtime/debug"
"sort"
"strings"
"syscall"
"testing"
"time"
docker "github.com/fsouza/go-dockerclient"
hclog "github.com/hashicorp/go-hclog"
"github.com/hashicorp/nomad/ci"
"github.com/hashicorp/nomad/client/taskenv"
"github.com/hashicorp/nomad/client/testutil"
"github.com/hashicorp/nomad/helper/freeport"
"github.com/hashicorp/nomad/helper/pluginutils/hclspecutils"
"github.com/hashicorp/nomad/helper/pluginutils/hclutils"
"github.com/hashicorp/nomad/helper/pluginutils/loader"
"github.com/hashicorp/nomad/helper/testlog"
"github.com/hashicorp/nomad/helper/uuid"
"github.com/hashicorp/nomad/nomad/structs"
"github.com/hashicorp/nomad/plugins/base"
"github.com/hashicorp/nomad/plugins/drivers"
dtestutil "github.com/hashicorp/nomad/plugins/drivers/testutils"
tu "github.com/hashicorp/nomad/testutil"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var (
basicResources = &drivers.Resources{
NomadResources: &structs.AllocatedTaskResources{
Memory: structs.AllocatedMemoryResources{
MemoryMB: 256,
},
Cpu: structs.AllocatedCpuResources{
CpuShares: 250,
},
},
LinuxResources: &drivers.LinuxResources{
CPUShares: 512,
MemoryLimitBytes: 256 * 1024 * 1024,
},
}
)
func dockerIsRemote(t *testing.T) bool {
client, err := docker.NewClientFromEnv()
if err != nil {
return false
}
// Technically this could be a local tcp socket but for testing purposes
// we'll just assume that tcp is only used for remote connections.
if client.Endpoint()[0:3] == "tcp" {
return true
}
return false
}
var (
// busyboxLongRunningCmd is a busybox command that runs indefinitely, and
// ideally responds to SIGINT/SIGTERM. Sadly, busybox:1.29.3 /bin/sleep doesn't.
busyboxLongRunningCmd = []string{"nc", "-l", "-p", "3000", "127.0.0.1"}
)
// Returns a task with a reserved and dynamic port. The ports are returned
// respectively, and should be reclaimed with freeport.Return at the end of a test.
func dockerTask(t *testing.T) (*drivers.TaskConfig, *TaskConfig, []int) {
ports := freeport.MustTake(2)
dockerReserved := ports[0]
dockerDynamic := ports[1]
cfg := newTaskConfig("", busyboxLongRunningCmd)
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "redis-demo",
AllocID: uuid.Generate(),
Env: map[string]string{
"test": t.Name(),
},
DeviceEnv: make(map[string]string),
Resources: &drivers.Resources{
NomadResources: &structs.AllocatedTaskResources{
Memory: structs.AllocatedMemoryResources{
MemoryMB: 256,
},
Cpu: structs.AllocatedCpuResources{
CpuShares: 512,
},
Networks: []*structs.NetworkResource{
{
IP: "127.0.0.1",
ReservedPorts: []structs.Port{{Label: "main", Value: dockerReserved}},
DynamicPorts: []structs.Port{{Label: "REDIS", Value: dockerDynamic}},
},
},
},
LinuxResources: &drivers.LinuxResources{
CPUShares: 512,
MemoryLimitBytes: 256 * 1024 * 1024,
PercentTicks: float64(512) / float64(4096),
},
},
}
require.NoError(t, task.EncodeConcreteDriverConfig(&cfg))
return task, &cfg, ports
}
// dockerSetup does all of the basic setup you need to get a running docker
// process up and running for testing. Use like:
//
// task := taskTemplate()
// // do custom task configuration
// client, handle, cleanup := dockerSetup(t, task, nil)
// defer cleanup()
// // do test stuff
//
// If there is a problem during setup this function will abort or skip the test
// and indicate the reason.
func dockerSetup(t *testing.T, task *drivers.TaskConfig, driverCfg map[string]interface{}) (*docker.Client, *dtestutil.DriverHarness, *taskHandle, func()) {
client := newTestDockerClient(t)
driver := dockerDriverHarness(t, driverCfg)
cleanup := driver.MkAllocDir(task, true)
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := driver.StartTask(task)
require.NoError(t, err)
dockerDriver, ok := driver.Impl().(*Driver)
require.True(t, ok)
handle, ok := dockerDriver.tasks.Get(task.ID)
require.True(t, ok)
return client, driver, handle, func() {
driver.DestroyTask(task.ID, true)
cleanup()
}
}
// cleanSlate removes the specified docker image, including potentially stopping/removing any
// containers based on that image. This is used to decouple tests that would be coupled
// by using the same container image.
func cleanSlate(client *docker.Client, imageID string) {
if img, _ := client.InspectImage(imageID); img == nil {
return
}
containers, _ := client.ListContainers(docker.ListContainersOptions{
All: true,
Filters: map[string][]string{
"ancestor": {imageID},
},
})
for _, c := range containers {
client.RemoveContainer(docker.RemoveContainerOptions{
Force: true,
ID: c.ID,
})
}
client.RemoveImageExtended(imageID, docker.RemoveImageOptions{
Force: true,
})
return
}
// dockerDriverHarness wires up everything needed to launch a task with a docker driver.
// A driver plugin interface and cleanup function is returned
func dockerDriverHarness(t *testing.T, cfg map[string]interface{}) *dtestutil.DriverHarness {
logger := testlog.HCLogger(t)
ctx, cancel := context.WithCancel(context.Background())
t.Cleanup(func() { cancel() })
harness := dtestutil.NewDriverHarness(t, NewDockerDriver(ctx, logger))
if cfg == nil {
cfg = map[string]interface{}{
"gc": map[string]interface{}{
"image": false,
"image_delay": "1s",
},
}
}
plugLoader, err := loader.NewPluginLoader(&loader.PluginLoaderConfig{
Logger: logger,
PluginDir: "./plugins",
SupportedVersions: loader.AgentSupportedApiVersions,
InternalPlugins: map[loader.PluginID]*loader.InternalPluginConfig{
PluginID: {
Config: cfg,
Factory: func(context.Context, hclog.Logger) interface{} {
return harness
},
},
},
})
require.NoError(t, err)
instance, err := plugLoader.Dispense(pluginName, base.PluginTypeDriver, nil, logger)
require.NoError(t, err)
driver, ok := instance.Plugin().(*dtestutil.DriverHarness)
if !ok {
t.Fatal("plugin instance is not a driver... wat?")
}
return driver
}
func newTestDockerClient(t *testing.T) *docker.Client {
t.Helper()
testutil.DockerCompatible(t)
client, err := docker.NewClientFromEnv()
if err != nil {
t.Fatalf("Failed to initialize client: %s\nStack\n%s", err, debug.Stack())
}
return client
}
// Following tests have been removed from this file.
// [TestDockerDriver_Fingerprint, TestDockerDriver_Fingerprint_Bridge, TestDockerDriver_Check_DockerHealthStatus]
// If you want to checkout/revert those tests, please check commit: 41715b1860778aa80513391bd64abd721d768ab0
func TestDockerDriver_Start_Wait(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
taskCfg := newTaskConfig("", busyboxLongRunningCmd)
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "nc-demo",
AllocID: uuid.Generate(),
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := d.StartTask(task)
require.NoError(t, err)
defer d.DestroyTask(task.ID, true)
// Attempt to wait
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case <-waitCh:
t.Fatalf("wait channel should not have received an exit result")
case <-time.After(time.Duration(tu.TestMultiplier()*1) * time.Second):
}
}
func TestDockerDriver_Start_WaitFinish(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
taskCfg := newTaskConfig("", []string{"echo", "hello"})
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "nc-demo",
AllocID: uuid.Generate(),
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := d.StartTask(task)
require.NoError(t, err)
defer d.DestroyTask(task.ID, true)
// Attempt to wait
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if !res.Successful() {
require.Fail(t, "ExitResult should be successful: %v", res)
}
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
require.Fail(t, "timeout")
}
}
// TestDockerDriver_Start_StoppedContainer asserts that Nomad will detect a
// stopped task container, remove it, and start a new container.
//
// See https://github.com/hashicorp/nomad/issues/3419
func TestDockerDriver_Start_StoppedContainer(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
taskCfg := newTaskConfig("", []string{"sleep", "9001"})
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "nc-demo",
AllocID: uuid.Generate(),
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
client := newTestDockerClient(t)
var imageID string
var err error
if runtime.GOOS != "windows" {
imageID, err = d.Impl().(*Driver).loadImage(task, &taskCfg, client)
} else {
image, lErr := client.InspectImage(taskCfg.Image)
err = lErr
if image != nil {
imageID = image.ID
}
}
require.NoError(t, err)
require.NotEmpty(t, imageID)
// Create a container of the same name but don't start it. This mimics
// the case of dockerd getting restarted and stopping containers while
// Nomad is watching them.
opts := docker.CreateContainerOptions{
Name: strings.Replace(task.ID, "/", "_", -1),
Config: &docker.Config{
Image: taskCfg.Image,
Cmd: []string{"sleep", "9000"},
Env: []string{fmt.Sprintf("test=%s", t.Name())},
},
}
if _, err := client.CreateContainer(opts); err != nil {
t.Fatalf("error creating initial container: %v", err)
}
_, _, err = d.StartTask(task)
defer d.DestroyTask(task.ID, true)
require.NoError(t, err)
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
require.NoError(t, d.DestroyTask(task.ID, true))
}
func TestDockerDriver_Start_LoadImage(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
taskCfg := newTaskConfig("", []string{"sh", "-c", "echo hello > $NOMAD_TASK_DIR/output"})
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "busybox-demo",
AllocID: uuid.Generate(),
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := d.StartTask(task)
require.NoError(t, err)
defer d.DestroyTask(task.ID, true)
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if !res.Successful() {
require.Fail(t, "ExitResult should be successful: %v", res)
}
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
require.Fail(t, "timeout")
}
// Check that data was written to the shared alloc directory.
outputFile := filepath.Join(task.TaskDir().LocalDir, "output")
act, err := ioutil.ReadFile(outputFile)
if err != nil {
t.Fatalf("Couldn't read expected output: %v", err)
}
exp := "hello"
if strings.TrimSpace(string(act)) != exp {
t.Fatalf("Command outputted %v; want %v", act, exp)
}
}
// Tests that starting a task without an image fails
func TestDockerDriver_Start_NoImage(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
taskCfg := TaskConfig{
Command: "echo",
Args: []string{"foo"},
}
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "echo",
AllocID: uuid.Generate(),
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, false)
defer cleanup()
_, _, err := d.StartTask(task)
require.Error(t, err)
require.Contains(t, err.Error(), "image name required")
d.DestroyTask(task.ID, true)
}
func TestDockerDriver_Start_BadPull_Recoverable(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
taskCfg := TaskConfig{
Image: "127.0.0.1:32121/foo", // bad path
ImagePullTimeout: "5m",
Command: "echo",
Args: []string{
"hello",
},
}
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "busybox-demo",
AllocID: uuid.Generate(),
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
defer cleanup()
_, _, err := d.StartTask(task)
require.Error(t, err)
defer d.DestroyTask(task.ID, true)
if rerr, ok := err.(*structs.RecoverableError); !ok {
t.Fatalf("want recoverable error: %+v", err)
} else if !rerr.IsRecoverable() {
t.Fatalf("error not recoverable: %+v", err)
}
}
func TestDockerDriver_Start_Wait_AllocDir(t *testing.T) {
ci.Parallel(t)
// This test requires that the alloc dir be mounted into docker as a volume.
// Because this cannot happen when docker is run remotely, e.g. when running
// docker in a VM, we skip this when we detect Docker is being run remotely.
if !testutil.DockerIsConnected(t) || dockerIsRemote(t) {
t.Skip("Docker not connected")
}
exp := []byte{'w', 'i', 'n'}
file := "output.txt"
taskCfg := newTaskConfig("", []string{
"sh",
"-c",
fmt.Sprintf(`sleep 1; echo -n %s > $%s/%s`,
string(exp), taskenv.AllocDir, file),
})
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "busybox-demo",
AllocID: uuid.Generate(),
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := d.StartTask(task)
require.NoError(t, err)
defer d.DestroyTask(task.ID, true)
// Attempt to wait
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if !res.Successful() {
require.Fail(t, fmt.Sprintf("ExitResult should be successful: %v", res))
}
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
require.Fail(t, "timeout")
}
// Check that data was written to the shared alloc directory.
outputFile := filepath.Join(task.TaskDir().SharedAllocDir, file)
act, err := ioutil.ReadFile(outputFile)
if err != nil {
t.Fatalf("Couldn't read expected output: %v", err)
}
if !reflect.DeepEqual(act, exp) {
t.Fatalf("Command outputted %v; want %v", act, exp)
}
}
func TestDockerDriver_Start_Kill_Wait(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
taskCfg := newTaskConfig("", busyboxLongRunningCmd)
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "busybox-demo",
AllocID: uuid.Generate(),
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := d.StartTask(task)
require.NoError(t, err)
defer d.DestroyTask(task.ID, true)
go func(t *testing.T) {
time.Sleep(100 * time.Millisecond)
signal := "SIGINT"
if runtime.GOOS == "windows" {
signal = "SIGKILL"
}
require.NoError(t, d.StopTask(task.ID, time.Second, signal))
}(t)
// Attempt to wait
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if res.Successful() {
require.Fail(t, "ExitResult should err: %v", res)
}
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
require.Fail(t, "timeout")
}
}
func TestDockerDriver_Start_KillTimeout(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
if runtime.GOOS == "windows" {
t.Skip("Windows Docker does not support SIGUSR1")
}
timeout := 2 * time.Second
taskCfg := newTaskConfig("", []string{"sleep", "10"})
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "busybox-demo",
AllocID: uuid.Generate(),
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := d.StartTask(task)
require.NoError(t, err)
defer d.DestroyTask(task.ID, true)
var killSent time.Time
go func() {
time.Sleep(100 * time.Millisecond)
killSent = time.Now()
require.NoError(t, d.StopTask(task.ID, timeout, "SIGUSR1"))
}()
// Attempt to wait
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
var killed time.Time
select {
case <-waitCh:
killed = time.Now()
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
require.Fail(t, "timeout")
}
require.True(t, killed.Sub(killSent) > timeout)
}
func TestDockerDriver_StartN(t *testing.T) {
ci.Parallel(t)
if runtime.GOOS == "windows" {
t.Skip("Windows Docker does not support SIGINT")
}
testutil.DockerCompatible(t)
require := require.New(t)
task1, _, ports1 := dockerTask(t)
defer freeport.Return(ports1)
task2, _, ports2 := dockerTask(t)
defer freeport.Return(ports2)
task3, _, ports3 := dockerTask(t)
defer freeport.Return(ports3)
taskList := []*drivers.TaskConfig{task1, task2, task3}
t.Logf("Starting %d tasks", len(taskList))
d := dockerDriverHarness(t, nil)
// Let's spin up a bunch of things
for _, task := range taskList {
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := d.StartTask(task)
require.NoError(err)
}
defer d.DestroyTask(task3.ID, true)
defer d.DestroyTask(task2.ID, true)
defer d.DestroyTask(task1.ID, true)
t.Log("All tasks are started. Terminating...")
for _, task := range taskList {
require.NoError(d.StopTask(task.ID, time.Second, "SIGINT"))
// Attempt to wait
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(err)
select {
case <-waitCh:
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
require.Fail("timeout waiting on task")
}
}
t.Log("Test complete!")
}
func TestDockerDriver_StartNVersions(t *testing.T) {
ci.Parallel(t)
if runtime.GOOS == "windows" {
t.Skip("Skipped on windows, we don't have image variants available")
}
testutil.DockerCompatible(t)
require := require.New(t)
task1, cfg1, ports1 := dockerTask(t)
defer freeport.Return(ports1)
tcfg1 := newTaskConfig("", []string{"echo", "hello"})
cfg1.Image = tcfg1.Image
cfg1.LoadImage = tcfg1.LoadImage
require.NoError(task1.EncodeConcreteDriverConfig(cfg1))
task2, cfg2, ports2 := dockerTask(t)
defer freeport.Return(ports2)
tcfg2 := newTaskConfig("musl", []string{"echo", "hello"})
cfg2.Image = tcfg2.Image
cfg2.LoadImage = tcfg2.LoadImage
require.NoError(task2.EncodeConcreteDriverConfig(cfg2))
task3, cfg3, ports3 := dockerTask(t)
defer freeport.Return(ports3)
tcfg3 := newTaskConfig("glibc", []string{"echo", "hello"})
cfg3.Image = tcfg3.Image
cfg3.LoadImage = tcfg3.LoadImage
require.NoError(task3.EncodeConcreteDriverConfig(cfg3))
taskList := []*drivers.TaskConfig{task1, task2, task3}
t.Logf("Starting %d tasks", len(taskList))
d := dockerDriverHarness(t, nil)
// Let's spin up a bunch of things
for _, task := range taskList {
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
copyImage(t, task.TaskDir(), "busybox_musl.tar")
copyImage(t, task.TaskDir(), "busybox_glibc.tar")
_, _, err := d.StartTask(task)
require.NoError(err)
require.NoError(d.WaitUntilStarted(task.ID, 5*time.Second))
}
defer d.DestroyTask(task3.ID, true)
defer d.DestroyTask(task2.ID, true)
defer d.DestroyTask(task1.ID, true)
t.Log("All tasks are started. Terminating...")
for _, task := range taskList {
require.NoError(d.StopTask(task.ID, time.Second, "SIGINT"))
// Attempt to wait
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(err)
select {
case <-waitCh:
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
require.Fail("timeout waiting on task")
}
}
t.Log("Test complete!")
}
func TestDockerDriver_Labels(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Labels = map[string]string{
"label1": "value1",
"label2": "value2",
}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
if err != nil {
t.Fatalf("err: %v", err)
}
// expect to see 1 additional standard labels (allocID)
require.Equal(t, len(cfg.Labels)+1, len(container.Config.Labels))
for k, v := range cfg.Labels {
require.Equal(t, v, container.Config.Labels[k])
}
}
func TestDockerDriver_ExtraLabels(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
dockerClientConfig := make(map[string]interface{})
dockerClientConfig["extra_labels"] = []string{"task*", "job_name"}
client, d, handle, cleanup := dockerSetup(t, task, dockerClientConfig)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
if err != nil {
t.Fatalf("err: %v", err)
}
expectedLabels := map[string]string{
"com.hashicorp.nomad.alloc_id": task.AllocID,
"com.hashicorp.nomad.task_name": task.Name,
"com.hashicorp.nomad.task_group_name": task.TaskGroupName,
"com.hashicorp.nomad.job_name": task.JobName,
}
// expect to see 4 labels (allocID by default, task_name and task_group_name due to task*, and job_name)
require.Equal(t, 4, len(container.Config.Labels))
for k, v := range expectedLabels {
require.Equal(t, v, container.Config.Labels[k])
}
}
func TestDockerDriver_LoggingConfiguration(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
dockerClientConfig := make(map[string]interface{})
loggerConfig := map[string]string{"gelf-address": "udp://1.2.3.4:12201", "tag": "gelf"}
dockerClientConfig["logging"] = LoggingConfig{
Type: "gelf",
Config: loggerConfig,
}
client, d, handle, cleanup := dockerSetup(t, task, dockerClientConfig)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.Equal(t, "gelf", container.HostConfig.LogConfig.Type)
require.Equal(t, loggerConfig, container.HostConfig.LogConfig.Config)
}
func TestDockerDriver_ForcePull(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.ForcePull = true
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
_, err := client.InspectContainer(handle.containerID)
if err != nil {
t.Fatalf("err: %v", err)
}
}
func TestDockerDriver_ForcePull_RepoDigest(t *testing.T) {
ci.Parallel(t)
if runtime.GOOS == "windows" {
t.Skip("TODO: Skipped digest test on Windows")
}
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.LoadImage = ""
cfg.Image = "library/busybox@sha256:58ac43b2cc92c687a32c8be6278e50a063579655fe3090125dcb2af0ff9e1a64"
localDigest := "sha256:8ac48589692a53a9b8c2d1ceaa6b402665aa7fe667ba51ccc03002300856d8c7"
cfg.ForcePull = true
cfg.Command = busyboxLongRunningCmd[0]
cfg.Args = busyboxLongRunningCmd[1:]
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.Equal(t, localDigest, container.Image)
}
func TestDockerDriver_SecurityOptUnconfined(t *testing.T) {
ci.Parallel(t)
if runtime.GOOS == "windows" {
t.Skip("Windows does not support seccomp")
}
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.SecurityOpt = []string{"seccomp=unconfined"}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
if err != nil {
t.Fatalf("err: %v", err)
}
require.Exactly(t, cfg.SecurityOpt, container.HostConfig.SecurityOpt)
}
func TestDockerDriver_SecurityOptFromFile(t *testing.T) {
ci.Parallel(t)
if runtime.GOOS == "windows" {
t.Skip("Windows does not support seccomp")
}
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.SecurityOpt = []string{"seccomp=./test-resources/docker/seccomp.json"}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.Contains(t, container.HostConfig.SecurityOpt[0], "reboot")
}
func TestDockerDriver_Runtime(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Runtime = "runc"
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
if err != nil {
t.Fatalf("err: %v", err)
}
require.Exactly(t, cfg.Runtime, container.HostConfig.Runtime)
}
func TestDockerDriver_CreateContainerConfig(t *testing.T) {
ci.Parallel(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
opt := map[string]string{"size": "120G"}
cfg.StorageOpt = opt
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
dh := dockerDriverHarness(t, nil)
driver := dh.Impl().(*Driver)
c, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.NoError(t, err)
require.Equal(t, "org/repo:0.1", c.Config.Image)
require.EqualValues(t, opt, c.HostConfig.StorageOpt)
// Container name should be /<task_name>-<alloc_id> for backward compat
containerName := fmt.Sprintf("%s-%s", strings.Replace(task.Name, "/", "_", -1), task.AllocID)
require.Equal(t, containerName, c.Name)
}
func TestDockerDriver_CreateContainerConfig_RuntimeConflict(t *testing.T) {
ci.Parallel(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
task.DeviceEnv["NVIDIA_VISIBLE_DEVICES"] = "GPU_UUID_1"
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
dh := dockerDriverHarness(t, nil)
driver := dh.Impl().(*Driver)
driver.gpuRuntime = true
// Should error if a runtime was explicitly set that doesn't match gpu runtime
cfg.Runtime = "nvidia"
c, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.NoError(t, err)
require.Equal(t, "nvidia", c.HostConfig.Runtime)
cfg.Runtime = "custom"
_, err = driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.Error(t, err)
require.Contains(t, err.Error(), "conflicting runtime requests")
}
func TestDockerDriver_CreateContainerConfig_ChecksAllowRuntimes(t *testing.T) {
ci.Parallel(t)
dh := dockerDriverHarness(t, nil)
driver := dh.Impl().(*Driver)
driver.gpuRuntime = true
driver.config.allowRuntimes = map[string]struct{}{
"runc": {},
"custom": {},
}
allowRuntime := []string{
"", // default always works
"runc",
"custom",
}
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
for _, runtime := range allowRuntime {
t.Run(runtime, func(t *testing.T) {
cfg.Runtime = runtime
c, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.NoError(t, err)
require.Equal(t, runtime, c.HostConfig.Runtime)
})
}
t.Run("not allowed: denied", func(t *testing.T) {
cfg.Runtime = "denied"
_, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.Error(t, err)
require.Contains(t, err.Error(), `runtime "denied" is not allowed`)
})
}
func TestDockerDriver_CreateContainerConfig_User(t *testing.T) {
ci.Parallel(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
task.User = "random-user-1"
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
dh := dockerDriverHarness(t, nil)
driver := dh.Impl().(*Driver)
c, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.NoError(t, err)
require.Equal(t, task.User, c.Config.User)
}
func TestDockerDriver_CreateContainerConfig_Labels(t *testing.T) {
ci.Parallel(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
task.AllocID = uuid.Generate()
task.JobName = "redis-demo-job"
cfg.Labels = map[string]string{
"user_label": "user_value",
// com.hashicorp.nomad. labels are reserved and
// cannot be overridden
"com.hashicorp.nomad.alloc_id": "bad_value",
}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
dh := dockerDriverHarness(t, nil)
driver := dh.Impl().(*Driver)
c, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.NoError(t, err)
expectedLabels := map[string]string{
// user provided labels
"user_label": "user_value",
// default label
"com.hashicorp.nomad.alloc_id": task.AllocID,
}
require.Equal(t, expectedLabels, c.Config.Labels)
}
func TestDockerDriver_CreateContainerConfig_Logging(t *testing.T) {
ci.Parallel(t)
cases := []struct {
name string
loggingConfig DockerLogging
expectedConfig DockerLogging
}{
{
"simple type",
DockerLogging{Type: "fluentd"},
DockerLogging{
Type: "fluentd",
Config: map[string]string{},
},
},
{
"simple driver",
DockerLogging{Driver: "fluentd"},
DockerLogging{
Type: "fluentd",
Config: map[string]string{},
},
},
{
"type takes precedence",
DockerLogging{
Type: "json-file",
Driver: "fluentd",
},
DockerLogging{
Type: "json-file",
Config: map[string]string{},
},
},
{
"user config takes precedence, even if no type provided",
DockerLogging{
Type: "",
Config: map[string]string{"max-file": "3", "max-size": "10m"},
},
DockerLogging{
Type: "",
Config: map[string]string{"max-file": "3", "max-size": "10m"},
},
},
{
"defaults to json-file w/ log rotation",
DockerLogging{
Type: "",
},
DockerLogging{
Type: "json-file",
Config: map[string]string{"max-file": "2", "max-size": "2m"},
},
},
}
for _, c := range cases {
t.Run(c.name, func(t *testing.T) {
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Logging = c.loggingConfig
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
dh := dockerDriverHarness(t, nil)
driver := dh.Impl().(*Driver)
cc, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.NoError(t, err)
require.Equal(t, c.expectedConfig.Type, cc.HostConfig.LogConfig.Type)
require.Equal(t, c.expectedConfig.Config["max-file"], cc.HostConfig.LogConfig.Config["max-file"])
require.Equal(t, c.expectedConfig.Config["max-size"], cc.HostConfig.LogConfig.Config["max-size"])
})
}
}
func TestDockerDriver_CreateContainerConfig_Mounts(t *testing.T) {
ci.Parallel(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Mounts = []DockerMount{
{
Type: "bind",
Target: "/map-bind-target",
Source: "/map-source",
},
{
Type: "tmpfs",
Target: "/map-tmpfs-target",
},
}
cfg.MountsList = []DockerMount{
{
Type: "bind",
Target: "/list-bind-target",
Source: "/list-source",
},
{
Type: "tmpfs",
Target: "/list-tmpfs-target",
},
}
expectedSrcPrefix := "/"
if runtime.GOOS == "windows" {
expectedSrcPrefix = "redis-demo\\"
}
expected := []docker.HostMount{
// from mount map
{
Type: "bind",
Target: "/map-bind-target",
Source: expectedSrcPrefix + "map-source",
BindOptions: &docker.BindOptions{},
},
{
Type: "tmpfs",
Target: "/map-tmpfs-target",
TempfsOptions: &docker.TempfsOptions{},
},
// from mount list
{
Type: "bind",
Target: "/list-bind-target",
Source: expectedSrcPrefix + "list-source",
BindOptions: &docker.BindOptions{},
},
{
Type: "tmpfs",
Target: "/list-tmpfs-target",
TempfsOptions: &docker.TempfsOptions{},
},
}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
dh := dockerDriverHarness(t, nil)
driver := dh.Impl().(*Driver)
driver.config.Volumes.Enabled = true
cc, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.NoError(t, err)
found := cc.HostConfig.Mounts
sort.Slice(found, func(i, j int) bool { return strings.Compare(found[i].Target, found[j].Target) < 0 })
sort.Slice(expected, func(i, j int) bool {
return strings.Compare(expected[i].Target, expected[j].Target) < 0
})
require.Equal(t, expected, found)
}
func TestDockerDriver_CreateContainerConfigWithRuntimes(t *testing.T) {
ci.Parallel(t)
testCases := []struct {
description string
gpuRuntimeSet bool
expectToReturnError bool
expectedRuntime string
nvidiaDevicesProvided bool
}{
{
description: "gpu devices are provided, docker driver was able to detect nvidia-runtime 1",
gpuRuntimeSet: true,
expectToReturnError: false,
expectedRuntime: "nvidia",
nvidiaDevicesProvided: true,
},
{
description: "gpu devices are provided, docker driver was able to detect nvidia-runtime 2",
gpuRuntimeSet: true,
expectToReturnError: false,
expectedRuntime: "nvidia-runtime-modified-name",
nvidiaDevicesProvided: true,
},
{
description: "no gpu devices provided - no runtime should be set",
gpuRuntimeSet: true,
expectToReturnError: false,
expectedRuntime: "nvidia",
nvidiaDevicesProvided: false,
},
{
description: "no gpuRuntime supported by docker driver",
gpuRuntimeSet: false,
expectToReturnError: true,
expectedRuntime: "nvidia",
nvidiaDevicesProvided: true,
},
}
for _, testCase := range testCases {
t.Run(testCase.description, func(t *testing.T) {
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
dh := dockerDriverHarness(t, map[string]interface{}{
"allow_runtimes": []string{"runc", "nvidia", "nvidia-runtime-modified-name"},
})
driver := dh.Impl().(*Driver)
driver.gpuRuntime = testCase.gpuRuntimeSet
driver.config.GPURuntimeName = testCase.expectedRuntime
if testCase.nvidiaDevicesProvided {
task.DeviceEnv["NVIDIA_VISIBLE_DEVICES"] = "GPU_UUID_1"
}
c, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
if testCase.expectToReturnError {
require.NotNil(t, err)
} else {
require.NoError(t, err)
if testCase.nvidiaDevicesProvided {
require.Equal(t, testCase.expectedRuntime, c.HostConfig.Runtime)
} else {
// no nvidia devices provided -> no point to use nvidia runtime
require.Equal(t, "", c.HostConfig.Runtime)
}
}
})
}
}
func TestDockerDriver_Capabilities(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
if runtime.GOOS == "windows" {
t.Skip("Capabilities not supported on windows")
}
testCases := []struct {
Name string
CapAdd []string
CapDrop []string
Allowlist string
StartError string
}{
{
Name: "default-allowlist-add-allowed",
CapAdd: []string{"fowner", "mknod"},
CapDrop: []string{"all"},
},
{
Name: "default-allowlist-add-forbidden",
CapAdd: []string{"net_admin"},
StartError: "net_admin",
},
{
Name: "default-allowlist-drop-existing",
CapDrop: []string{"fowner", "mknod", "net_raw"},
},
{
Name: "restrictive-allowlist-drop-all",
CapDrop: []string{"all"},
Allowlist: "fowner,mknod",
},
{
Name: "restrictive-allowlist-add-allowed",
CapAdd: []string{"fowner", "mknod"},
CapDrop: []string{"all"},
Allowlist: "mknod,fowner",
},
{
Name: "restrictive-allowlist-add-forbidden",
CapAdd: []string{"net_admin", "mknod"},
CapDrop: []string{"all"},
Allowlist: "fowner,mknod",
StartError: "net_admin",
},
{
Name: "permissive-allowlist",
CapAdd: []string{"mknod", "net_admin"},
Allowlist: "all",
},
{
Name: "permissive-allowlist-add-all",
CapAdd: []string{"all"},
Allowlist: "all",
},
}
for _, tc := range testCases {
t.Run(tc.Name, func(t *testing.T) {
client := newTestDockerClient(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
if len(tc.CapAdd) > 0 {
cfg.CapAdd = tc.CapAdd
}
if len(tc.CapDrop) > 0 {
cfg.CapDrop = tc.CapDrop
}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
d := dockerDriverHarness(t, nil)
dockerDriver, ok := d.Impl().(*Driver)
require.True(t, ok)
if tc.Allowlist != "" {
dockerDriver.config.AllowCaps = strings.Split(tc.Allowlist, ",")
}
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := d.StartTask(task)
defer d.DestroyTask(task.ID, true)
if err == nil && tc.StartError != "" {
t.Fatalf("Expected error in start: %v", tc.StartError)
} else if err != nil {
if tc.StartError == "" {
require.NoError(t, err)
} else {
require.Contains(t, err.Error(), tc.StartError)
}
return
}
handle, ok := dockerDriver.tasks.Get(task.ID)
require.True(t, ok)
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.Exactly(t, tc.CapAdd, container.HostConfig.CapAdd)
require.Exactly(t, tc.CapDrop, container.HostConfig.CapDrop)
})
}
}
func TestDockerDriver_DNS(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
testutil.ExecCompatible(t)
cases := []struct {
name string
cfg *drivers.DNSConfig
}{
{
name: "nil DNSConfig",
},
{
name: "basic",
cfg: &drivers.DNSConfig{
Servers: []string{"1.1.1.1", "1.0.0.1"},
},
},
{
name: "full",
cfg: &drivers.DNSConfig{
Servers: []string{"1.1.1.1", "1.0.0.1"},
Searches: []string{"local.test", "node.consul"},
Options: []string{"ndots:2", "edns0"},
},
},
}
for _, c := range cases {
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
task.DNS = c.cfg
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
_, d, _, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
defer d.DestroyTask(task.ID, true)
dtestutil.TestTaskDNSConfig(t, d, task.ID, c.cfg)
}
}
func TestDockerDriver_Init(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
if runtime.GOOS == "windows" {
t.Skip("Windows does not support init.")
}
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Init = true
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.Equal(t, cfg.Init, container.HostConfig.Init)
}
func TestDockerDriver_CPUSetCPUs(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
testutil.CgroupsCompatible(t)
testCases := []struct {
Name string
CPUSetCPUs string
}{
{
Name: "Single CPU",
CPUSetCPUs: "0",
},
{
Name: "Comma separated list of CPUs",
CPUSetCPUs: "0,1",
},
{
Name: "Range of CPUs",
CPUSetCPUs: "0-1",
},
}
for _, testCase := range testCases {
t.Run(testCase.Name, func(t *testing.T) {
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.CPUSetCPUs = testCase.CPUSetCPUs
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.Equal(t, cfg.CPUSetCPUs, container.HostConfig.CPUSetCPUs)
})
}
}
func TestDockerDriver_MemoryHardLimit(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
if runtime.GOOS == "windows" {
t.Skip("Windows does not support MemoryReservation")
}
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.MemoryHardLimit = 300
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.Equal(t, task.Resources.LinuxResources.MemoryLimitBytes, container.HostConfig.MemoryReservation)
require.Equal(t, cfg.MemoryHardLimit*1024*1024, container.HostConfig.Memory)
}
func TestDockerDriver_MACAddress(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
if runtime.GOOS == "windows" {
t.Skip("Windows docker does not support setting MacAddress")
}
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.MacAddress = "00:16:3e:00:00:00"
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.Equal(t, cfg.MacAddress, container.NetworkSettings.MacAddress)
}
func TestDockerWorkDir(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.WorkDir = "/some/path"
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.Equal(t, cfg.WorkDir, filepath.ToSlash(container.Config.WorkingDir))
}
func inSlice(needle string, haystack []string) bool {
for _, h := range haystack {
if h == needle {
return true
}
}
return false
}
func TestDockerDriver_PortsNoMap(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, _, ports := dockerTask(t)
defer freeport.Return(ports)
res := ports[0]
dyn := ports[1]
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
// Verify that the correct ports are EXPOSED
expectedExposedPorts := map[docker.Port]struct{}{
docker.Port(fmt.Sprintf("%d/tcp", res)): {},
docker.Port(fmt.Sprintf("%d/udp", res)): {},
docker.Port(fmt.Sprintf("%d/tcp", dyn)): {},
docker.Port(fmt.Sprintf("%d/udp", dyn)): {},
}
require.Exactly(t, expectedExposedPorts, container.Config.ExposedPorts)
hostIP := "127.0.0.1"
if runtime.GOOS == "windows" {
hostIP = ""
}
// Verify that the correct ports are FORWARDED
expectedPortBindings := map[docker.Port][]docker.PortBinding{
docker.Port(fmt.Sprintf("%d/tcp", res)): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", res)}},
docker.Port(fmt.Sprintf("%d/udp", res)): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", res)}},
docker.Port(fmt.Sprintf("%d/tcp", dyn)): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", dyn)}},
docker.Port(fmt.Sprintf("%d/udp", dyn)): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", dyn)}},
}
require.Exactly(t, expectedPortBindings, container.HostConfig.PortBindings)
}
func TestDockerDriver_PortsMapping(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
res := ports[0]
dyn := ports[1]
cfg.PortMap = map[string]int{
"main": 8080,
"REDIS": 6379,
}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
// Verify that the port environment variables are set
require.Contains(t, container.Config.Env, "NOMAD_PORT_main=8080")
require.Contains(t, container.Config.Env, "NOMAD_PORT_REDIS=6379")
// Verify that the correct ports are EXPOSED
expectedExposedPorts := map[docker.Port]struct{}{
docker.Port("8080/tcp"): {},
docker.Port("8080/udp"): {},
docker.Port("6379/tcp"): {},
docker.Port("6379/udp"): {},
}
require.Exactly(t, expectedExposedPorts, container.Config.ExposedPorts)
hostIP := "127.0.0.1"
if runtime.GOOS == "windows" {
hostIP = ""
}
// Verify that the correct ports are FORWARDED
expectedPortBindings := map[docker.Port][]docker.PortBinding{
docker.Port("8080/tcp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", res)}},
docker.Port("8080/udp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", res)}},
docker.Port("6379/tcp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", dyn)}},
docker.Port("6379/udp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", dyn)}},
}
require.Exactly(t, expectedPortBindings, container.HostConfig.PortBindings)
}
func TestDockerDriver_CreateContainerConfig_Ports(t *testing.T) {
ci.Parallel(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
hostIP := "127.0.0.1"
if runtime.GOOS == "windows" {
hostIP = ""
}
portmappings := structs.AllocatedPorts(make([]structs.AllocatedPortMapping, len(ports)))
portmappings[0] = structs.AllocatedPortMapping{
Label: "main",
Value: ports[0],
HostIP: hostIP,
To: 8080,
}
portmappings[1] = structs.AllocatedPortMapping{
Label: "REDIS",
Value: ports[1],
HostIP: hostIP,
To: 6379,
}
task.Resources.Ports = &portmappings
cfg.Ports = []string{"main", "REDIS"}
dh := dockerDriverHarness(t, nil)
driver := dh.Impl().(*Driver)
c, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.NoError(t, err)
require.Equal(t, "org/repo:0.1", c.Config.Image)
// Verify that the correct ports are FORWARDED
expectedPortBindings := map[docker.Port][]docker.PortBinding{
docker.Port("8080/tcp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", ports[0])}},
docker.Port("8080/udp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", ports[0])}},
docker.Port("6379/tcp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", ports[1])}},
docker.Port("6379/udp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", ports[1])}},
}
require.Exactly(t, expectedPortBindings, c.HostConfig.PortBindings)
}
func TestDockerDriver_CreateContainerConfig_PortsMapping(t *testing.T) {
ci.Parallel(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
res := ports[0]
dyn := ports[1]
cfg.PortMap = map[string]int{
"main": 8080,
"REDIS": 6379,
}
dh := dockerDriverHarness(t, nil)
driver := dh.Impl().(*Driver)
c, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.NoError(t, err)
require.Equal(t, "org/repo:0.1", c.Config.Image)
require.Contains(t, c.Config.Env, "NOMAD_PORT_main=8080")
require.Contains(t, c.Config.Env, "NOMAD_PORT_REDIS=6379")
// Verify that the correct ports are FORWARDED
hostIP := "127.0.0.1"
if runtime.GOOS == "windows" {
hostIP = ""
}
expectedPortBindings := map[docker.Port][]docker.PortBinding{
docker.Port("8080/tcp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", res)}},
docker.Port("8080/udp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", res)}},
docker.Port("6379/tcp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", dyn)}},
docker.Port("6379/udp"): {{HostIP: hostIP, HostPort: fmt.Sprintf("%d", dyn)}},
}
require.Exactly(t, expectedPortBindings, c.HostConfig.PortBindings)
}
func TestDockerDriver_CleanupContainer(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Command = "echo"
cfg.Args = []string{"hello"}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if !res.Successful() {
t.Fatalf("err: %v", res)
}
err = d.DestroyTask(task.ID, false)
require.NoError(t, err)
time.Sleep(3 * time.Second)
// Ensure that the container isn't present
_, err := client.InspectContainer(handle.containerID)
if err == nil {
t.Fatalf("expected to not get container")
}
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
t.Fatalf("timeout")
}
}
func TestDockerDriver_EnableImageGC(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Command = "echo"
cfg.Args = []string{"hello"}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client := newTestDockerClient(t)
driver := dockerDriverHarness(t, map[string]interface{}{
"gc": map[string]interface{}{
"container": true,
"image": true,
"image_delay": "2s",
},
})
cleanup := driver.MkAllocDir(task, true)
defer cleanup()
cleanSlate(client, cfg.Image)
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := driver.StartTask(task)
require.NoError(t, err)
dockerDriver, ok := driver.Impl().(*Driver)
require.True(t, ok)
_, ok = dockerDriver.tasks.Get(task.ID)
require.True(t, ok)
waitCh, err := dockerDriver.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if !res.Successful() {
t.Fatalf("err: %v", res)
}
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
t.Fatalf("timeout")
}
// we haven't called DestroyTask, image should be present
_, err = client.InspectImage(cfg.Image)
require.NoError(t, err)
err = dockerDriver.DestroyTask(task.ID, false)
require.NoError(t, err)
// image_delay is 3s, so image should still be around for a bit
_, err = client.InspectImage(cfg.Image)
require.NoError(t, err)
// Ensure image was removed
tu.WaitForResult(func() (bool, error) {
if _, err := client.InspectImage(cfg.Image); err == nil {
return false, fmt.Errorf("image exists but should have been removed. Does another %v container exist?", cfg.Image)
}
return true, nil
}, func(err error) {
require.NoError(t, err)
})
}
func TestDockerDriver_DisableImageGC(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Command = "echo"
cfg.Args = []string{"hello"}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client := newTestDockerClient(t)
driver := dockerDriverHarness(t, map[string]interface{}{
"gc": map[string]interface{}{
"container": true,
"image": false,
"image_delay": "1s",
},
})
cleanup := driver.MkAllocDir(task, true)
defer cleanup()
cleanSlate(client, cfg.Image)
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := driver.StartTask(task)
require.NoError(t, err)
dockerDriver, ok := driver.Impl().(*Driver)
require.True(t, ok)
handle, ok := dockerDriver.tasks.Get(task.ID)
require.True(t, ok)
waitCh, err := dockerDriver.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if !res.Successful() {
t.Fatalf("err: %v", res)
}
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
t.Fatalf("timeout")
}
// we haven't called DestroyTask, image should be present
_, err = client.InspectImage(handle.containerImage)
require.NoError(t, err)
err = dockerDriver.DestroyTask(task.ID, false)
require.NoError(t, err)
// image_delay is 1s, wait a little longer
time.Sleep(3 * time.Second)
// image should not have been removed or scheduled to be removed
_, err = client.InspectImage(cfg.Image)
require.NoError(t, err)
dockerDriver.coordinator.imageLock.Lock()
_, ok = dockerDriver.coordinator.deleteFuture[handle.containerImage]
require.False(t, ok, "image should not be registered for deletion")
dockerDriver.coordinator.imageLock.Unlock()
}
func TestDockerDriver_MissingContainer_Cleanup(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Command = "echo"
cfg.Args = []string{"hello"}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client := newTestDockerClient(t)
driver := dockerDriverHarness(t, map[string]interface{}{
"gc": map[string]interface{}{
"container": true,
"image": true,
"image_delay": "0s",
},
})
cleanup := driver.MkAllocDir(task, true)
defer cleanup()
cleanSlate(client, cfg.Image)
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := driver.StartTask(task)
require.NoError(t, err)
dockerDriver, ok := driver.Impl().(*Driver)
require.True(t, ok)
h, ok := dockerDriver.tasks.Get(task.ID)
require.True(t, ok)
waitCh, err := dockerDriver.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if !res.Successful() {
t.Fatalf("err: %v", res)
}
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
t.Fatalf("timeout")
}
// remove the container out-of-band
require.NoError(t, client.RemoveContainer(docker.RemoveContainerOptions{
ID: h.containerID,
}))
require.NoError(t, dockerDriver.DestroyTask(task.ID, false))
// Ensure image was removed
tu.WaitForResult(func() (bool, error) {
if _, err := client.InspectImage(cfg.Image); err == nil {
return false, fmt.Errorf("image exists but should have been removed. Does another %v container exist?", cfg.Image)
}
return true, nil
}, func(err error) {
require.NoError(t, err)
})
// Ensure that task handle was removed
_, ok = dockerDriver.tasks.Get(task.ID)
require.False(t, ok)
}
func TestDockerDriver_Stats(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Command = "sleep"
cfg.Args = []string{"1000"}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
_, d, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
go func() {
defer d.DestroyTask(task.ID, true)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
ch, err := handle.Stats(ctx, 1*time.Second)
assert.NoError(t, err)
select {
case ru := <-ch:
assert.NotNil(t, ru.ResourceUsage)
case <-time.After(3 * time.Second):
assert.Fail(t, "stats timeout")
}
}()
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if res.Successful() {
t.Fatalf("should err: %v", res)
}
case <-time.After(time.Duration(tu.TestMultiplier()*10) * time.Second):
t.Fatalf("timeout")
}
}
func setupDockerVolumes(t *testing.T, cfg map[string]interface{}, hostpath string) (*drivers.TaskConfig, *dtestutil.DriverHarness, *TaskConfig, string, func()) {
testutil.DockerCompatible(t)
randfn := fmt.Sprintf("test-%d", rand.Int())
hostfile := filepath.Join(hostpath, randfn)
var containerPath string
if runtime.GOOS == "windows" {
containerPath = "C:\\data"
} else {
containerPath = "/mnt/vol"
}
containerFile := filepath.Join(containerPath, randfn)
taskCfg := newTaskConfig("", []string{"touch", containerFile})
taskCfg.Volumes = []string{fmt.Sprintf("%s:%s", hostpath, containerPath)}
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "ls",
AllocID: uuid.Generate(),
Env: map[string]string{"VOL_PATH": containerPath},
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(taskCfg))
d := dockerDriverHarness(t, cfg)
cleanup := d.MkAllocDir(task, true)
copyImage(t, task.TaskDir(), "busybox.tar")
return task, d, &taskCfg, hostfile, cleanup
}
func TestDockerDriver_VolumesDisabled(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
cfg := map[string]interface{}{
"volumes": map[string]interface{}{
"enabled": false,
},
"gc": map[string]interface{}{
"image": false,
},
}
{
tmpvol := t.TempDir()
task, driver, _, _, cleanup := setupDockerVolumes(t, cfg, tmpvol)
defer cleanup()
_, _, err := driver.StartTask(task)
defer driver.DestroyTask(task.ID, true)
if err == nil {
require.Fail(t, "Started driver successfully when volumes should have been disabled.")
}
}
// Relative paths should still be allowed
{
task, driver, _, fn, cleanup := setupDockerVolumes(t, cfg, ".")
defer cleanup()
_, _, err := driver.StartTask(task)
require.NoError(t, err)
defer driver.DestroyTask(task.ID, true)
waitCh, err := driver.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if !res.Successful() {
t.Fatalf("unexpected err: %v", res)
}
case <-time.After(time.Duration(tu.TestMultiplier()*10) * time.Second):
t.Fatalf("timeout")
}
if _, err := ioutil.ReadFile(filepath.Join(task.TaskDir().Dir, fn)); err != nil {
t.Fatalf("unexpected error reading %s: %v", fn, err)
}
}
// Volume Drivers should be rejected (error)
{
task, driver, taskCfg, _, cleanup := setupDockerVolumes(t, cfg, "fake_flocker_vol")
defer cleanup()
taskCfg.VolumeDriver = "flocker"
require.NoError(t, task.EncodeConcreteDriverConfig(taskCfg))
_, _, err := driver.StartTask(task)
defer driver.DestroyTask(task.ID, true)
if err == nil {
require.Fail(t, "Started driver successfully when volume drivers should have been disabled.")
}
}
}
func TestDockerDriver_VolumesEnabled(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
cfg := map[string]interface{}{
"volumes": map[string]interface{}{
"enabled": true,
},
"gc": map[string]interface{}{
"image": false,
},
}
tmpvol := t.TempDir()
// Evaluate symlinks so it works on MacOS
tmpvol, err := filepath.EvalSymlinks(tmpvol)
require.NoError(t, err)
task, driver, _, hostpath, cleanup := setupDockerVolumes(t, cfg, tmpvol)
defer cleanup()
_, _, err = driver.StartTask(task)
require.NoError(t, err)
defer driver.DestroyTask(task.ID, true)
waitCh, err := driver.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if !res.Successful() {
t.Fatalf("unexpected err: %v", res)
}
case <-time.After(time.Duration(tu.TestMultiplier()*10) * time.Second):
t.Fatalf("timeout")
}
if _, err := ioutil.ReadFile(hostpath); err != nil {
t.Fatalf("unexpected error reading %s: %v", hostpath, err)
}
}
func TestDockerDriver_Mounts(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
goodMount := DockerMount{
Target: "/nomad",
VolumeOptions: DockerVolumeOptions{
Labels: map[string]string{"foo": "bar"},
DriverConfig: DockerVolumeDriverConfig{
Name: "local",
},
},
ReadOnly: true,
Source: "test",
}
if runtime.GOOS == "windows" {
goodMount.Target = "C:\\nomad"
}
cases := []struct {
Name string
Mounts []DockerMount
Error string
}{
{
Name: "good-one",
Error: "",
Mounts: []DockerMount{goodMount},
},
{
Name: "duplicate",
Error: "Duplicate mount point",
Mounts: []DockerMount{goodMount, goodMount, goodMount},
},
}
for _, c := range cases {
t.Run(c.Name, func(t *testing.T) {
d := dockerDriverHarness(t, nil)
driver := d.Impl().(*Driver)
driver.config.Volumes.Enabled = true
// Build the task
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Command = "sleep"
cfg.Args = []string{"10000"}
cfg.Mounts = c.Mounts
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := d.StartTask(task)
defer d.DestroyTask(task.ID, true)
if err == nil && c.Error != "" {
t.Fatalf("expected error: %v", c.Error)
} else if err != nil {
if c.Error == "" {
t.Fatalf("unexpected error in prestart: %v", err)
} else if !strings.Contains(err.Error(), c.Error) {
t.Fatalf("expected error %q; got %v", c.Error, err)
}
}
})
}
}
func TestDockerDriver_AuthConfiguration(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
path := "./test-resources/docker/auth.json"
cases := []struct {
Repo string
AuthConfig *docker.AuthConfiguration
}{
{
Repo: "lolwhat.com/what:1337",
AuthConfig: nil,
},
{
Repo: "redis:7",
AuthConfig: &docker.AuthConfiguration{
Username: "test",
Password: "1234",
Email: "",
ServerAddress: "https://index.docker.io/v1/",
},
},
{
Repo: "quay.io/redis:7",
AuthConfig: &docker.AuthConfiguration{
Username: "test",
Password: "5678",
Email: "",
ServerAddress: "quay.io",
},
},
{
Repo: "other.io/redis:7",
AuthConfig: &docker.AuthConfiguration{
Username: "test",
Password: "abcd",
Email: "",
ServerAddress: "https://other.io/v1/",
},
},
}
for _, c := range cases {
act, err := authFromDockerConfig(path)(c.Repo)
require.NoError(t, err)
require.Exactly(t, c.AuthConfig, act)
}
}
func TestDockerDriver_AuthFromTaskConfig(t *testing.T) {
ci.Parallel(t)
cases := []struct {
Auth DockerAuth
AuthConfig *docker.AuthConfiguration
Desc string
}{
{
Auth: DockerAuth{},
AuthConfig: nil,
Desc: "Empty Config",
},
{
Auth: DockerAuth{
Username: "foo",
Password: "bar",
Email: "foo@bar.com",
ServerAddr: "www.foobar.com",
},
AuthConfig: &docker.AuthConfiguration{
Username: "foo",
Password: "bar",
Email: "foo@bar.com",
ServerAddress: "www.foobar.com",
},
Desc: "All fields set",
},
{
Auth: DockerAuth{
Username: "foo",
Password: "bar",
ServerAddr: "www.foobar.com",
},
AuthConfig: &docker.AuthConfiguration{
Username: "foo",
Password: "bar",
ServerAddress: "www.foobar.com",
},
Desc: "Email not set",
},
}
for _, c := range cases {
t.Run(c.Desc, func(t *testing.T) {
act, err := authFromTaskConfig(&TaskConfig{Auth: c.Auth})("test")
require.NoError(t, err)
require.Exactly(t, c.AuthConfig, act)
})
}
}
func TestDockerDriver_OOMKilled(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
if runtime.GOOS == "windows" {
t.Skip("Windows does not support OOM Killer")
}
taskCfg := newTaskConfig("", []string{"sh", "-c", `sleep 2 && x=a && while true; do x="$x$x"; done`})
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: "oom-killed",
AllocID: uuid.Generate(),
Resources: basicResources,
}
task.Resources.LinuxResources.MemoryLimitBytes = 10 * 1024 * 1024
task.Resources.NomadResources.Memory.MemoryMB = 10
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
_, _, err := d.StartTask(task)
require.NoError(t, err)
defer d.DestroyTask(task.ID, true)
waitCh, err := d.WaitTask(context.Background(), task.ID)
require.NoError(t, err)
select {
case res := <-waitCh:
if res.Successful() {
t.Fatalf("expected error, but container exited successful")
}
if !res.OOMKilled {
t.Fatalf("not killed by OOM killer: %s", res.Err)
}
t.Logf("Successfully killed by OOM killer")
case <-time.After(time.Duration(tu.TestMultiplier()*5) * time.Second):
t.Fatalf("timeout")
}
}
func TestDockerDriver_Devices_IsInvalidConfig(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
brokenConfigs := []DockerDevice{
{
HostPath: "",
},
{
HostPath: "/dev/sda1",
CgroupPermissions: "rxb",
},
}
testCases := []struct {
deviceConfig []DockerDevice
err error
}{
{brokenConfigs[:1], fmt.Errorf("host path must be set in configuration for devices")},
{brokenConfigs[1:], fmt.Errorf("invalid cgroup permission string: \"rxb\"")},
}
for _, tc := range testCases {
task, cfg, ports := dockerTask(t)
cfg.Devices = tc.deviceConfig
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
copyImage(t, task.TaskDir(), "busybox.tar")
defer cleanup()
_, _, err := d.StartTask(task)
require.Error(t, err)
require.Contains(t, err.Error(), tc.err.Error())
freeport.Return(ports)
}
}
func TestDockerDriver_Device_Success(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
if runtime.GOOS != "linux" {
t.Skip("test device mounts only on linux")
}
hostPath := "/dev/random"
containerPath := "/dev/myrandom"
perms := "rwm"
expectedDevice := docker.Device{
PathOnHost: hostPath,
PathInContainer: containerPath,
CgroupPermissions: perms,
}
config := DockerDevice{
HostPath: hostPath,
ContainerPath: containerPath,
}
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Devices = []DockerDevice{config}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, driver, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, driver.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.NotEmpty(t, container.HostConfig.Devices, "Expected one device")
require.Equal(t, expectedDevice, container.HostConfig.Devices[0], "Incorrect device ")
}
func TestDockerDriver_Entrypoint(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
entrypoint := []string{"sh", "-c"}
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.Entrypoint = entrypoint
cfg.Command = strings.Join(busyboxLongRunningCmd, " ")
cfg.Args = []string{}
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, driver, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, driver.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.Len(t, container.Config.Entrypoint, 2, "Expected one entrypoint")
require.Equal(t, entrypoint, container.Config.Entrypoint, "Incorrect entrypoint ")
}
func TestDockerDriver_ReadonlyRootfs(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
if runtime.GOOS == "windows" {
t.Skip("Windows Docker does not support root filesystem in read-only mode")
}
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.ReadonlyRootfs = true
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client, driver, handle, cleanup := dockerSetup(t, task, nil)
defer cleanup()
require.NoError(t, driver.WaitUntilStarted(task.ID, 5*time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
require.True(t, container.HostConfig.ReadonlyRootfs, "ReadonlyRootfs option not set")
}
// fakeDockerClient can be used in places that accept an interface for the
// docker client such as createContainer.
type fakeDockerClient struct{}
func (fakeDockerClient) CreateContainer(docker.CreateContainerOptions) (*docker.Container, error) {
return nil, fmt.Errorf("volume is attached on another node")
}
func (fakeDockerClient) InspectContainer(id string) (*docker.Container, error) {
panic("not implemented")
}
func (fakeDockerClient) ListContainers(docker.ListContainersOptions) ([]docker.APIContainers, error) {
panic("not implemented")
}
func (fakeDockerClient) RemoveContainer(opts docker.RemoveContainerOptions) error {
panic("not implemented")
}
// TestDockerDriver_VolumeError asserts volume related errors when creating a
// container are recoverable.
func TestDockerDriver_VolumeError(t *testing.T) {
ci.Parallel(t)
// setup
_, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
driver := dockerDriverHarness(t, nil)
// assert volume error is recoverable
_, err := driver.Impl().(*Driver).createContainer(fakeDockerClient{}, docker.CreateContainerOptions{Config: &docker.Config{}}, cfg.Image)
require.True(t, structs.IsRecoverable(err))
}
func TestDockerDriver_AdvertiseIPv6Address(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
expectedPrefix := "2001:db8:1::242:ac11"
expectedAdvertise := true
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
cfg.AdvertiseIPv6Addr = expectedAdvertise
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client := newTestDockerClient(t)
// Make sure IPv6 is enabled
net, err := client.NetworkInfo("bridge")
if err != nil {
t.Skip("error retrieving bridge network information, skipping")
}
if net == nil || !net.EnableIPv6 {
t.Skip("IPv6 not enabled on bridge network, skipping")
}
driver := dockerDriverHarness(t, nil)
cleanup := driver.MkAllocDir(task, true)
copyImage(t, task.TaskDir(), "busybox.tar")
defer cleanup()
_, network, err := driver.StartTask(task)
defer driver.DestroyTask(task.ID, true)
require.NoError(t, err)
require.Equal(t, expectedAdvertise, network.AutoAdvertise, "Wrong autoadvertise. Expect: %s, got: %s", expectedAdvertise, network.AutoAdvertise)
if !strings.HasPrefix(network.IP, expectedPrefix) {
t.Fatalf("Got IP address %q want ip address with prefix %q", network.IP, expectedPrefix)
}
handle, ok := driver.Impl().(*Driver).tasks.Get(task.ID)
require.True(t, ok)
require.NoError(t, driver.WaitUntilStarted(task.ID, time.Second))
container, err := client.InspectContainer(handle.containerID)
require.NoError(t, err)
if !strings.HasPrefix(container.NetworkSettings.GlobalIPv6Address, expectedPrefix) {
t.Fatalf("Got GlobalIPv6address %s want GlobalIPv6address with prefix %s", expectedPrefix, container.NetworkSettings.GlobalIPv6Address)
}
}
func TestParseDockerImage(t *testing.T) {
ci.Parallel(t)
tests := []struct {
Image string
Repo string
Tag string
}{
{"library/hello-world:1.0", "library/hello-world", "1.0"},
{"library/hello-world", "library/hello-world", "latest"},
{"library/hello-world:latest", "library/hello-world", "latest"},
{"library/hello-world@sha256:f5233545e43561214ca4891fd1157e1c3c563316ed8e237750d59bde73361e77", "library/hello-world@sha256:f5233545e43561214ca4891fd1157e1c3c563316ed8e237750d59bde73361e77", ""},
}
for _, test := range tests {
t.Run(test.Image, func(t *testing.T) {
repo, tag := parseDockerImage(test.Image)
require.Equal(t, test.Repo, repo)
require.Equal(t, test.Tag, tag)
})
}
}
func TestDockerImageRef(t *testing.T) {
ci.Parallel(t)
tests := []struct {
Image string
Repo string
Tag string
}{
{"library/hello-world:1.0", "library/hello-world", "1.0"},
{"library/hello-world:latest", "library/hello-world", "latest"},
{"library/hello-world@sha256:f5233545e43561214ca4891fd1157e1c3c563316ed8e237750d59bde73361e77", "library/hello-world@sha256:f5233545e43561214ca4891fd1157e1c3c563316ed8e237750d59bde73361e77", ""},
}
for _, test := range tests {
t.Run(test.Image, func(t *testing.T) {
image := dockerImageRef(test.Repo, test.Tag)
require.Equal(t, test.Image, image)
})
}
}
func waitForExist(t *testing.T, client *docker.Client, containerID string) {
tu.WaitForResult(func() (bool, error) {
container, err := client.InspectContainer(containerID)
if err != nil {
if _, ok := err.(*docker.NoSuchContainer); !ok {
return false, err
}
}
return container != nil, nil
}, func(err error) {
require.NoError(t, err)
})
}
// TestDockerDriver_CreationIdempotent asserts that createContainer and
// and startContainers functions are idempotent, as we have some retry
// logic there without ensureing we delete/destroy containers
func TestDockerDriver_CreationIdempotent(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
task, cfg, ports := dockerTask(t)
defer freeport.Return(ports)
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
client := newTestDockerClient(t)
driver := dockerDriverHarness(t, nil)
cleanup := driver.MkAllocDir(task, true)
defer cleanup()
copyImage(t, task.TaskDir(), "busybox.tar")
d, ok := driver.Impl().(*Driver)
require.True(t, ok)
_, err := d.createImage(task, cfg, client)
require.NoError(t, err)
containerCfg, err := d.createContainerConfig(task, cfg, cfg.Image)
require.NoError(t, err)
c, err := d.createContainer(client, containerCfg, cfg.Image)
require.NoError(t, err)
defer client.RemoveContainer(docker.RemoveContainerOptions{
ID: c.ID,
Force: true,
})
// calling createContainer again creates a new one and remove old one
c2, err := d.createContainer(client, containerCfg, cfg.Image)
require.NoError(t, err)
defer client.RemoveContainer(docker.RemoveContainerOptions{
ID: c2.ID,
Force: true,
})
require.NotEqual(t, c.ID, c2.ID)
// old container was destroyed
{
_, err := client.InspectContainer(c.ID)
require.Error(t, err)
require.Contains(t, err.Error(), NoSuchContainerError)
}
// now start container twice
require.NoError(t, d.startContainer(c2))
require.NoError(t, d.startContainer(c2))
tu.WaitForResult(func() (bool, error) {
c, err := client.InspectContainer(c2.ID)
if err != nil {
return false, fmt.Errorf("failed to get container status: %v", err)
}
if !c.State.Running {
return false, fmt.Errorf("container is not running but %v", c.State)
}
return true, nil
}, func(err error) {
require.NoError(t, err)
})
}
// TestDockerDriver_CreateContainerConfig_CPUHardLimit asserts that a default
// CPU quota and period are set when cpu_hard_limit = true.
func TestDockerDriver_CreateContainerConfig_CPUHardLimit(t *testing.T) {
ci.Parallel(t)
task, _, ports := dockerTask(t)
defer freeport.Return(ports)
dh := dockerDriverHarness(t, nil)
driver := dh.Impl().(*Driver)
schema, _ := driver.TaskConfigSchema()
spec, _ := hclspecutils.Convert(schema)
val, _, _ := hclutils.ParseHclInterface(map[string]interface{}{
"image": "foo/bar",
"cpu_hard_limit": true,
}, spec, nil)
require.NoError(t, task.EncodeDriverConfig(val))
cfg := &TaskConfig{}
require.NoError(t, task.DecodeDriverConfig(cfg))
c, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
require.NoError(t, err)
require.NotZero(t, c.HostConfig.CPUQuota)
require.NotZero(t, c.HostConfig.CPUPeriod)
}
func TestDockerDriver_memoryLimits(t *testing.T) {
ci.Parallel(t)
cases := []struct {
name string
driverMemoryMB int64
taskResources drivers.MemoryResources
expectedHard int64
expectedSoft int64
}{
{
"plain request",
0,
drivers.MemoryResources{MemoryMB: 10},
10 * 1024 * 1024,
0,
},
{
"with driver max",
20,
drivers.MemoryResources{MemoryMB: 10},
20 * 1024 * 1024,
10 * 1024 * 1024,
},
{
"with resources max",
20,
drivers.MemoryResources{MemoryMB: 10, MemoryMaxMB: 20},
20 * 1024 * 1024,
10 * 1024 * 1024,
},
{
"with driver and resources max: higher driver",
30,
drivers.MemoryResources{MemoryMB: 10, MemoryMaxMB: 20},
30 * 1024 * 1024,
10 * 1024 * 1024,
},
{
"with driver and resources max: higher resources",
20,
drivers.MemoryResources{MemoryMB: 10, MemoryMaxMB: 30},
30 * 1024 * 1024,
10 * 1024 * 1024,
},
}
for _, c := range cases {
t.Run(c.name, func(t *testing.T) {
hard, soft := memoryLimits(c.driverMemoryMB, c.taskResources)
require.Equal(t, c.expectedHard, hard)
require.Equal(t, c.expectedSoft, soft)
})
}
}
func TestDockerDriver_cgroupParent(t *testing.T) {
ci.Parallel(t)
t.Run("v1", func(t *testing.T) {
testutil.CgroupsCompatibleV1(t)
parent := cgroupParent(&drivers.Resources{
LinuxResources: &drivers.LinuxResources{
CpusetCgroupPath: "/sys/fs/cgroup/cpuset/nomad",
},
})
require.Equal(t, "", parent)
})
t.Run("v2", func(t *testing.T) {
testutil.CgroupsCompatibleV2(t)
parent := cgroupParent(&drivers.Resources{
LinuxResources: &drivers.LinuxResources{
CpusetCgroupPath: "/sys/fs/cgroup/nomad.slice",
},
})
require.Equal(t, "nomad.slice", parent)
})
}
func TestDockerDriver_parseSignal(t *testing.T) {
ci.Parallel(t)
tests := []struct {
name string
runtime string
specifiedSignal string
expectedSignal string
}{
{
name: "default",
runtime: runtime.GOOS,
specifiedSignal: "",
expectedSignal: "SIGTERM",
},
{
name: "set",
runtime: runtime.GOOS,
specifiedSignal: "SIGHUP",
expectedSignal: "SIGHUP",
},
{
name: "windows conversion",
runtime: "windows",
specifiedSignal: "SIGINT",
expectedSignal: "SIGTERM",
},
{
name: "not signal",
runtime: runtime.GOOS,
specifiedSignal: "SIGDOESNOTEXIST",
expectedSignal: "", // throws error
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
s, err := parseSignal(tc.runtime, tc.specifiedSignal)
if tc.expectedSignal == "" {
require.Error(t, err, "invalid signal")
} else {
require.NoError(t, err)
require.Equal(t, s.(syscall.Signal), s)
}
})
}
}
// This test asserts that Nomad isn't overriding the STOPSIGNAL in a Dockerfile
func TestDockerDriver_StopSignal(t *testing.T) {
ci.Parallel(t)
testutil.DockerCompatible(t)
if runtime.GOOS == "windows" {
t.Skip("Skipped on windows, we don't have image variants available")
}
cases := []struct {
name string
variant string
jobKillSignal string
expectedSignals []string
}{
{
name: "stopsignal-only",
variant: "stopsignal",
jobKillSignal: "",
expectedSignals: []string{"19", "9"},
},
{
name: "stopsignal-killsignal",
variant: "stopsignal",
jobKillSignal: "SIGTERM",
expectedSignals: []string{"15", "19", "9"},
},
{
name: "killsignal-only",
variant: "",
jobKillSignal: "SIGTERM",
expectedSignals: []string{"15", "15", "9"},
},
{
name: "nosignals-default",
variant: "",
jobKillSignal: "",
expectedSignals: []string{"15", "9"},
},
}
for _, c := range cases {
t.Run(c.name, func(t *testing.T) {
taskCfg := newTaskConfig(c.variant, []string{"sleep", "9901"})
task := &drivers.TaskConfig{
ID: uuid.Generate(),
Name: c.name,
AllocID: uuid.Generate(),
Resources: basicResources,
}
require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
d := dockerDriverHarness(t, nil)
cleanup := d.MkAllocDir(task, true)
defer cleanup()
if c.variant == "stopsignal" {
copyImage(t, task.TaskDir(), "busybox_stopsignal.tar") // Default busybox image with STOPSIGNAL 19 added
} else {
copyImage(t, task.TaskDir(), "busybox.tar")
}
client := newTestDockerClient(t)
listener := make(chan *docker.APIEvents)
err := client.AddEventListener(listener)
require.NoError(t, err)
defer func() {
err := client.RemoveEventListener(listener)
require.NoError(t, err)
}()
_, _, err = d.StartTask(task)
require.NoError(t, err)
require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
stopErr := make(chan error, 1)
go func() {
err := d.StopTask(task.ID, 1*time.Second, c.jobKillSignal)
stopErr <- err
}()
timeout := time.After(10 * time.Second)
var receivedSignals []string
WAIT:
for {
select {
case msg := <-listener:
// Only add kill signals
if msg.Action == "kill" {
sig := msg.Actor.Attributes["signal"]
receivedSignals = append(receivedSignals, sig)
if reflect.DeepEqual(receivedSignals, c.expectedSignals) {
break WAIT
}
}
case err := <-stopErr:
require.NoError(t, err, "stop task failed")
case <-timeout:
// timeout waiting for signals
require.Equal(t, c.expectedSignals, receivedSignals, "timed out waiting for expected signals")
}
}
})
}
}
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