3b2ff2005b
Due to https://github.com/tsenart/deadcode/issues/3 we can't specify these consts on their own. This moves them into the _platform_test.go files to avoid creating a package that only exposes a couple of values.
696 lines
18 KiB
Go
696 lines
18 KiB
Go
// +build darwin dragonfly freebsd linux netbsd openbsd solaris
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package docker
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import (
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"fmt"
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"io"
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"os"
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"path/filepath"
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"sort"
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"strconv"
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"strings"
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"testing"
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"time"
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docker "github.com/fsouza/go-dockerclient"
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"github.com/hashicorp/nomad/client/allocdir"
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"github.com/hashicorp/nomad/client/testutil"
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"github.com/hashicorp/nomad/helper/uuid"
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"github.com/hashicorp/nomad/plugins/drivers"
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tu "github.com/hashicorp/nomad/testutil"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestDockerDriver_User(t *testing.T) {
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if !tu.IsTravis() {
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t.Parallel()
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}
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testutil.DockerCompatible(t)
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task, cfg, _ := dockerTask(t)
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task.User = "alice"
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cfg.Command = "/bin/sleep"
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cfg.Args = []string{"10000"}
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require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
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d := dockerDriverHarness(t, nil)
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cleanup := d.MkAllocDir(task, true)
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defer cleanup()
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copyImage(t, task.TaskDir(), "busybox.tar")
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_, _, err := d.StartTask(task)
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if err == nil {
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d.DestroyTask(task.ID, true)
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t.Fatalf("Should've failed")
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}
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if !strings.Contains(err.Error(), "alice") {
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t.Fatalf("Expected failure string not found, found %q instead", err.Error())
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}
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}
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func TestDockerDriver_NetworkAliases_Bridge(t *testing.T) {
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if !tu.IsTravis() {
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t.Parallel()
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}
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testutil.DockerCompatible(t)
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require := require.New(t)
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// Because go-dockerclient doesn't provide api for query network aliases, just check that
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// a container can be created with a 'network_aliases' property
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// Create network, network-scoped alias is supported only for containers in user defined networks
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client := newTestDockerClient(t)
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networkOpts := docker.CreateNetworkOptions{Name: "foobar", Driver: "bridge"}
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network, err := client.CreateNetwork(networkOpts)
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require.NoError(err)
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defer client.RemoveNetwork(network.ID)
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expected := []string{"foobar"}
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taskCfg := newTaskConfig("", busyboxLongRunningCmd)
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taskCfg.NetworkMode = network.Name
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taskCfg.NetworkAliases = expected
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task := &drivers.TaskConfig{
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ID: uuid.Generate(),
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Name: "busybox",
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Resources: basicResources,
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}
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require.NoError(task.EncodeConcreteDriverConfig(&taskCfg))
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d := dockerDriverHarness(t, nil)
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cleanup := d.MkAllocDir(task, true)
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defer cleanup()
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copyImage(t, task.TaskDir(), "busybox.tar")
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_, _, err = d.StartTask(task)
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require.NoError(err)
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require.NoError(d.WaitUntilStarted(task.ID, 5*time.Second))
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defer d.DestroyTask(task.ID, true)
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dockerDriver, ok := d.Impl().(*Driver)
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require.True(ok)
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handle, ok := dockerDriver.tasks.Get(task.ID)
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require.True(ok)
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_, err = client.InspectContainer(handle.containerID)
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require.NoError(err)
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}
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func TestDockerDriver_NetworkMode_Host(t *testing.T) {
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if !tu.IsTravis() {
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t.Parallel()
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}
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testutil.DockerCompatible(t)
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expected := "host"
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taskCfg := newTaskConfig("", busyboxLongRunningCmd)
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taskCfg.NetworkMode = expected
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task := &drivers.TaskConfig{
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ID: uuid.Generate(),
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Name: "busybox-demo",
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Resources: basicResources,
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}
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require.NoError(t, task.EncodeConcreteDriverConfig(&taskCfg))
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d := dockerDriverHarness(t, nil)
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cleanup := d.MkAllocDir(task, true)
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defer cleanup()
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copyImage(t, task.TaskDir(), "busybox.tar")
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_, _, err := d.StartTask(task)
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require.NoError(t, err)
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require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
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defer d.DestroyTask(task.ID, true)
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dockerDriver, ok := d.Impl().(*Driver)
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require.True(t, ok)
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handle, ok := dockerDriver.tasks.Get(task.ID)
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require.True(t, ok)
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container, err := client.InspectContainer(handle.containerID)
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if err != nil {
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t.Fatalf("err: %v", err)
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}
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actual := container.HostConfig.NetworkMode
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require.Equal(t, expected, actual)
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}
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func TestDockerDriver_CPUCFSPeriod(t *testing.T) {
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if !tu.IsTravis() {
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t.Parallel()
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}
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testutil.DockerCompatible(t)
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task, cfg, _ := dockerTask(t)
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cfg.CPUHardLimit = true
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cfg.CPUCFSPeriod = 1000000
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require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
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client, _, handle, cleanup := dockerSetup(t, task)
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defer cleanup()
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waitForExist(t, client, handle.containerID)
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container, err := client.InspectContainer(handle.containerID)
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require.NoError(t, err)
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require.Equal(t, cfg.CPUCFSPeriod, container.HostConfig.CPUPeriod)
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}
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func TestDockerDriver_Sysctl_Ulimit(t *testing.T) {
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testutil.DockerCompatible(t)
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task, cfg, _ := dockerTask(t)
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expectedUlimits := map[string]string{
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"nproc": "4242",
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"nofile": "2048:4096",
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}
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cfg.Sysctl = map[string]string{
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"net.core.somaxconn": "16384",
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}
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cfg.Ulimit = expectedUlimits
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require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
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client, d, handle, cleanup := dockerSetup(t, task)
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defer cleanup()
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require.NoError(t, d.WaitUntilStarted(task.ID, 5*time.Second))
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container, err := client.InspectContainer(handle.containerID)
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assert.Nil(t, err, "unexpected error: %v", err)
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want := "16384"
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got := container.HostConfig.Sysctls["net.core.somaxconn"]
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assert.Equal(t, want, got, "Wrong net.core.somaxconn config for docker job. Expect: %s, got: %s", want, got)
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expectedUlimitLen := 2
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actualUlimitLen := len(container.HostConfig.Ulimits)
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assert.Equal(t, want, got, "Wrong number of ulimit configs for docker job. Expect: %d, got: %d", expectedUlimitLen, actualUlimitLen)
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for _, got := range container.HostConfig.Ulimits {
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if expectedStr, ok := expectedUlimits[got.Name]; !ok {
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t.Errorf("%s config unexpected for docker job.", got.Name)
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} else {
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if !strings.Contains(expectedStr, ":") {
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expectedStr = expectedStr + ":" + expectedStr
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}
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splitted := strings.SplitN(expectedStr, ":", 2)
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soft, _ := strconv.Atoi(splitted[0])
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hard, _ := strconv.Atoi(splitted[1])
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assert.Equal(t, int64(soft), got.Soft, "Wrong soft %s ulimit for docker job. Expect: %d, got: %d", got.Name, soft, got.Soft)
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assert.Equal(t, int64(hard), got.Hard, "Wrong hard %s ulimit for docker job. Expect: %d, got: %d", got.Name, hard, got.Hard)
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}
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}
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}
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func TestDockerDriver_Sysctl_Ulimit_Errors(t *testing.T) {
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testutil.DockerCompatible(t)
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brokenConfigs := []map[string]string{
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{
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"nofile": "",
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},
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{
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"nofile": "abc:1234",
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},
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{
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"nofile": "1234:abc",
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},
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}
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testCases := []struct {
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ulimitConfig map[string]string
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err error
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}{
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{brokenConfigs[0], fmt.Errorf("Malformed ulimit specification nofile: \"\", cannot be empty")},
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{brokenConfigs[1], fmt.Errorf("Malformed soft ulimit nofile: abc:1234")},
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{brokenConfigs[2], fmt.Errorf("Malformed hard ulimit nofile: 1234:abc")},
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}
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for _, tc := range testCases {
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task, cfg, _ := dockerTask(t)
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cfg.Ulimit = tc.ulimitConfig
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require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
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d := dockerDriverHarness(t, nil)
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cleanup := d.MkAllocDir(task, true)
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defer cleanup()
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copyImage(t, task.TaskDir(), "busybox.tar")
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_, _, err := d.StartTask(task)
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require.NotNil(t, err, "Expected non nil error")
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require.Contains(t, err.Error(), tc.err.Error())
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}
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}
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// This test does not run on Windows due to stricter path validation in the
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// negative case for non existent mount paths. We should write a similar test
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// for windows.
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func TestDockerDriver_BindMountsHonorVolumesEnabledFlag(t *testing.T) {
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t.Parallel()
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testutil.DockerCompatible(t)
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allocDir := "/tmp/nomad/alloc-dir"
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cases := []struct {
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name string
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requiresVolumes bool
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volumeDriver string
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volumes []string
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expectedVolumes []string
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}{
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{
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name: "basic plugin",
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requiresVolumes: true,
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volumeDriver: "nfs",
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volumes: []string{"test-path:/tmp/taskpath"},
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expectedVolumes: []string{"test-path:/tmp/taskpath"},
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},
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{
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name: "absolute default driver",
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requiresVolumes: true,
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volumeDriver: "",
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volumes: []string{"/abs/test-path:/tmp/taskpath"},
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expectedVolumes: []string{"/abs/test-path:/tmp/taskpath"},
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},
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{
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name: "absolute local driver",
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requiresVolumes: true,
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volumeDriver: "local",
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volumes: []string{"/abs/test-path:/tmp/taskpath"},
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expectedVolumes: []string{"/abs/test-path:/tmp/taskpath"},
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},
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{
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name: "relative default driver",
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requiresVolumes: false,
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volumeDriver: "",
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volumes: []string{"test-path:/tmp/taskpath"},
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expectedVolumes: []string{"/tmp/nomad/alloc-dir/demo/test-path:/tmp/taskpath"},
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},
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{
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name: "relative local driver",
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requiresVolumes: false,
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volumeDriver: "local",
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volumes: []string{"test-path:/tmp/taskpath"},
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expectedVolumes: []string{"/tmp/nomad/alloc-dir/demo/test-path:/tmp/taskpath"},
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},
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{
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name: "relative outside task-dir default driver",
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requiresVolumes: false,
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volumeDriver: "",
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volumes: []string{"../test-path:/tmp/taskpath"},
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expectedVolumes: []string{"/tmp/nomad/alloc-dir/test-path:/tmp/taskpath"},
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},
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{
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name: "relative outside task-dir local driver",
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requiresVolumes: false,
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volumeDriver: "local",
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volumes: []string{"../test-path:/tmp/taskpath"},
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expectedVolumes: []string{"/tmp/nomad/alloc-dir/test-path:/tmp/taskpath"},
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},
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{
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name: "relative outside alloc-dir default driver",
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requiresVolumes: true,
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volumeDriver: "",
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volumes: []string{"../../test-path:/tmp/taskpath"},
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expectedVolumes: []string{"/tmp/nomad/test-path:/tmp/taskpath"},
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},
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{
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name: "relative outside task-dir local driver",
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requiresVolumes: true,
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volumeDriver: "local",
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volumes: []string{"../../test-path:/tmp/taskpath"},
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expectedVolumes: []string{"/tmp/nomad/test-path:/tmp/taskpath"},
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},
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}
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t.Run("with volumes enabled", func(t *testing.T) {
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dh := dockerDriverHarness(t, nil)
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driver := dh.Impl().(*Driver)
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driver.config.Volumes.Enabled = true
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for _, c := range cases {
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t.Run(c.name, func(t *testing.T) {
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task, cfg, _ := dockerTask(t)
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cfg.VolumeDriver = c.volumeDriver
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cfg.Volumes = c.volumes
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task.AllocDir = allocDir
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task.Name = "demo"
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require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
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cc, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
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require.NoError(t, err)
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for _, v := range c.expectedVolumes {
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require.Contains(t, cc.HostConfig.Binds, v)
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}
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})
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}
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})
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t.Run("with volumes disabled", func(t *testing.T) {
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dh := dockerDriverHarness(t, nil)
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driver := dh.Impl().(*Driver)
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driver.config.Volumes.Enabled = false
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for _, c := range cases {
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t.Run(c.name, func(t *testing.T) {
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task, cfg, _ := dockerTask(t)
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cfg.VolumeDriver = c.volumeDriver
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cfg.Volumes = c.volumes
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task.AllocDir = allocDir
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task.Name = "demo"
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require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
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cc, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
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if c.requiresVolumes {
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require.Error(t, err, "volumes are not enabled")
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} else {
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require.NoError(t, err)
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for _, v := range c.expectedVolumes {
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require.Contains(t, cc.HostConfig.Binds, v)
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}
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}
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})
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}
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})
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}
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// This test does not run on windows due to differences in the definition of
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// an absolute path, changing path expansion behaviour. A similar test should
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// be written for windows.
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func TestDockerDriver_MountsSerialization(t *testing.T) {
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t.Parallel()
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testutil.DockerCompatible(t)
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allocDir := "/tmp/nomad/alloc-dir"
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cases := []struct {
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name string
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requiresVolumes bool
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passedMounts []DockerMount
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expectedMounts []docker.HostMount
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}{
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{
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name: "basic volume",
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passedMounts: []DockerMount{
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{
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Target: "/nomad",
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ReadOnly: true,
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Source: "test",
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},
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},
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expectedMounts: []docker.HostMount{
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{
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Type: "volume",
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Target: "/nomad",
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Source: "test",
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ReadOnly: true,
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VolumeOptions: &docker.VolumeOptions{},
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},
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},
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},
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{
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name: "basic bind",
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passedMounts: []DockerMount{
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{
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Type: "bind",
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Target: "/nomad",
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Source: "test",
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},
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},
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expectedMounts: []docker.HostMount{
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{
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Type: "bind",
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Target: "/nomad",
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Source: "/tmp/nomad/alloc-dir/demo/test",
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BindOptions: &docker.BindOptions{},
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},
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},
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},
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{
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name: "basic absolute bind",
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requiresVolumes: true,
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passedMounts: []DockerMount{
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{
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Type: "bind",
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Target: "/nomad",
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Source: "/tmp/test",
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},
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},
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expectedMounts: []docker.HostMount{
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{
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Type: "bind",
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Target: "/nomad",
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Source: "/tmp/test",
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BindOptions: &docker.BindOptions{},
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},
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},
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},
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{
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name: "bind relative outside",
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requiresVolumes: true,
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passedMounts: []DockerMount{
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{
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Type: "bind",
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Target: "/nomad",
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Source: "../../test",
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},
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},
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expectedMounts: []docker.HostMount{
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{
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Type: "bind",
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Target: "/nomad",
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Source: "/tmp/nomad/test",
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BindOptions: &docker.BindOptions{},
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},
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},
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},
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{
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name: "basic tmpfs",
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requiresVolumes: false,
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passedMounts: []DockerMount{
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{
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Type: "tmpfs",
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Target: "/nomad",
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TmpfsOptions: DockerTmpfsOptions{
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SizeBytes: 321,
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Mode: 0666,
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},
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},
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},
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expectedMounts: []docker.HostMount{
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{
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Type: "tmpfs",
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Target: "/nomad",
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TempfsOptions: &docker.TempfsOptions{
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SizeBytes: 321,
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Mode: 0666,
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},
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},
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},
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},
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}
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t.Run("with volumes enabled", func(t *testing.T) {
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dh := dockerDriverHarness(t, nil)
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driver := dh.Impl().(*Driver)
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driver.config.Volumes.Enabled = true
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for _, c := range cases {
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t.Run(c.name, func(t *testing.T) {
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task, cfg, _ := dockerTask(t)
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cfg.Mounts = c.passedMounts
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task.AllocDir = allocDir
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task.Name = "demo"
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require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
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cc, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
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require.NoError(t, err)
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require.EqualValues(t, c.expectedMounts, cc.HostConfig.Mounts)
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})
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}
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})
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t.Run("with volumes disabled", func(t *testing.T) {
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dh := dockerDriverHarness(t, nil)
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driver := dh.Impl().(*Driver)
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driver.config.Volumes.Enabled = false
|
|
|
|
for _, c := range cases {
|
|
t.Run(c.name, func(t *testing.T) {
|
|
task, cfg, _ := dockerTask(t)
|
|
cfg.Mounts = c.passedMounts
|
|
|
|
task.AllocDir = allocDir
|
|
task.Name = "demo"
|
|
|
|
require.NoError(t, task.EncodeConcreteDriverConfig(cfg))
|
|
|
|
cc, err := driver.createContainerConfig(task, cfg, "org/repo:0.1")
|
|
if c.requiresVolumes {
|
|
require.Error(t, err, "volumes are not enabled")
|
|
} else {
|
|
require.NoError(t, err)
|
|
require.EqualValues(t, c.expectedMounts, cc.HostConfig.Mounts)
|
|
}
|
|
})
|
|
}
|
|
})
|
|
}
|
|
|
|
// TestDockerDriver_CreateContainerConfig_MountsCombined asserts that
|
|
// devices and mounts set by device managers/plugins are honored
|
|
// and present in docker.CreateContainerOptions, and that it is appended
|
|
// to any devices/mounts a user sets in the task config.
|
|
func TestDockerDriver_CreateContainerConfig_MountsCombined(t *testing.T) {
|
|
t.Parallel()
|
|
testutil.DockerCompatible(t)
|
|
|
|
task, cfg, _ := dockerTask(t)
|
|
|
|
task.Devices = []*drivers.DeviceConfig{
|
|
{
|
|
HostPath: "/dev/fuse",
|
|
TaskPath: "/container/dev/task-fuse",
|
|
Permissions: "rw",
|
|
},
|
|
}
|
|
task.Mounts = []*drivers.MountConfig{
|
|
{
|
|
HostPath: "/tmp/task-mount",
|
|
TaskPath: "/container/tmp/task-mount",
|
|
Readonly: true,
|
|
},
|
|
}
|
|
|
|
cfg.Devices = []DockerDevice{
|
|
{
|
|
HostPath: "/dev/stdout",
|
|
ContainerPath: "/container/dev/cfg-stdout",
|
|
CgroupPermissions: "rwm",
|
|
},
|
|
}
|
|
cfg.Mounts = []DockerMount{
|
|
{
|
|
Type: "bind",
|
|
Source: "/tmp/cfg-mount",
|
|
Target: "/container/tmp/cfg-mount",
|
|
ReadOnly: false,
|
|
},
|
|
}
|
|
|
|
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)
|
|
|
|
expectedMounts := []docker.HostMount{
|
|
{
|
|
Type: "bind",
|
|
Source: "/tmp/cfg-mount",
|
|
Target: "/container/tmp/cfg-mount",
|
|
ReadOnly: false,
|
|
BindOptions: &docker.BindOptions{},
|
|
},
|
|
{
|
|
Type: "bind",
|
|
Source: "/tmp/task-mount",
|
|
Target: "/container/tmp/task-mount",
|
|
ReadOnly: true,
|
|
},
|
|
}
|
|
foundMounts := c.HostConfig.Mounts
|
|
sort.Slice(foundMounts, func(i, j int) bool {
|
|
return foundMounts[i].Target < foundMounts[j].Target
|
|
})
|
|
require.EqualValues(t, expectedMounts, foundMounts)
|
|
|
|
expectedDevices := []docker.Device{
|
|
{
|
|
PathOnHost: "/dev/stdout",
|
|
PathInContainer: "/container/dev/cfg-stdout",
|
|
CgroupPermissions: "rwm",
|
|
},
|
|
{
|
|
PathOnHost: "/dev/fuse",
|
|
PathInContainer: "/container/dev/task-fuse",
|
|
CgroupPermissions: "rw",
|
|
},
|
|
}
|
|
|
|
foundDevices := c.HostConfig.Devices
|
|
sort.Slice(foundDevices, func(i, j int) bool {
|
|
return foundDevices[i].PathInContainer < foundDevices[j].PathInContainer
|
|
})
|
|
require.EqualValues(t, expectedDevices, foundDevices)
|
|
}
|
|
|
|
func newTaskConfig(variant string, command []string) TaskConfig {
|
|
// busyboxImageID is the ID stored in busybox.tar
|
|
busyboxImageID := "busybox:1.29.3"
|
|
|
|
image := busyboxImageID
|
|
loadImage := "busybox.tar"
|
|
if variant != "" {
|
|
image = fmt.Sprintf("%s-%s", busyboxImageID, variant)
|
|
loadImage = fmt.Sprintf("busybox_%s.tar", variant)
|
|
}
|
|
|
|
return TaskConfig{
|
|
Image: image,
|
|
LoadImage: loadImage,
|
|
Command: command[0],
|
|
Args: command[1:],
|
|
}
|
|
}
|
|
|
|
func copyImage(t *testing.T, taskDir *allocdir.TaskDir, image string) {
|
|
dst := filepath.Join(taskDir.LocalDir, image)
|
|
copyFile(filepath.Join("./test-resources/docker", image), dst, t)
|
|
}
|
|
|
|
// copyFile moves an existing file to the destination
|
|
func copyFile(src, dst string, t *testing.T) {
|
|
in, err := os.Open(src)
|
|
if err != nil {
|
|
t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
|
|
}
|
|
defer in.Close()
|
|
out, err := os.Create(dst)
|
|
if err != nil {
|
|
t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
|
|
}
|
|
defer func() {
|
|
if err := out.Close(); err != nil {
|
|
t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
|
|
}
|
|
}()
|
|
if _, err = io.Copy(out, in); err != nil {
|
|
t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
|
|
}
|
|
if err := out.Sync(); err != nil {
|
|
t.Fatalf("copying %v -> %v failed: %v", src, dst, err)
|
|
}
|
|
}
|