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Update container runtime to properly report the engine and version 

This address a TODO when collecting the node version information so it
will properly report the configured runtime and its version. Previously,
this was hardcoded to "docker://" and the docker version, and would show
"docker://1.9.1" even when the kubelet was configured to use rkt.

With this change, it will use the runtime's Type() and Version() data.

This also changes the container.Runtime interface to add an APIVersion()
method. This can be used when the runtime has separate versions for the
engine and the API, such as with Docker. The Docker minimum version
validation has been updated to use APIVersion(), and
DockerManager.Version() now returns the engine version.
pull/6/head
Ken Robertson 2016-01-14 15:16:07 -08:00
parent 6504b74823
commit a7b07c01df
8 changed files with 67 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
pkg/kubelet/container/fake_runtime.go
View File

@ -43,6 +43,7 @@ type FakeRuntime struct {
StartedContainers []string
KilledContainers []string
VersionInfo string
APIVersionInfo string
RuntimeType string
Err error
InspectErr error
@ -154,6 +155,14 @@ func (f *FakeRuntime) Version() (Version, error) {
return &FakeVersion{Version: f.VersionInfo}, f.Err
}
func (f *FakeRuntime) APIVersion() (Version, error) {
f.Lock()
defer f.Unlock()
f.CalledFunctions = append(f.CalledFunctions, "APIVersion")
return &FakeVersion{Version: f.APIVersionInfo}, f.Err
}
func (f *FakeRuntime) GetPods(all bool) ([]*Pod, error) {
f.Lock()
defer f.Unlock()

3
pkg/kubelet/container/runtime.go
View File

@ -82,6 +82,9 @@ type Runtime interface {
// Version returns the version information of the container runtime.
Version() (Version, error)
// APIVersion returns the API version information of the container
// runtime. This may be different from the runtime engine's version.
APIVersion() (Version, error)
// GetPods returns a list containers group by pods. The boolean parameter
// specifies whether the runtime returns all containers including those already
// exited and dead containers (used for garbage collection).

5
pkg/kubelet/container/runtime_mock.go
View File

@ -47,6 +47,11 @@ func (r *Mock) Version() (Version, error) {
return args.Get(0).(Version), args.Error(1)
}
func (r *Mock) APIVersion() (Version, error) {
args := r.Called()
return args.Get(0).(Version), args.Error(1)
}
func (r *Mock) GetPods(all bool) ([]*Pod, error) {
args := r.Called(all)
return args.Get(0).([]*Pod), args.Error(1)

11
pkg/kubelet/dockertools/docker_test.go
View File

@ -160,7 +160,16 @@ func TestVersion(t *testing.T) {
if err != nil {
t.Errorf("got error while getting docker server version - %s", err)
}
expectedVersion, _ := docker.NewAPIVersion("1.15")
expectedVersion, _ := docker.NewAPIVersion("1.1.3")
if e, a := expectedVersion.String(), version.String(); e != a {
t.Errorf("invalid docker server version. expected: %v, got: %v", e, a)
}
version, err = manager.APIVersion()
if err != nil {
t.Errorf("got error while getting docker server version - %s", err)
}
expectedVersion, _ = docker.NewAPIVersion("1.15")
if e, a := expectedVersion.String(), version.String(); e != a {
t.Errorf("invalid docker server version. expected: %v, got: %v", e, a)
}

21
pkg/kubelet/dockertools/manager.go
View File

@ -980,11 +980,26 @@ func (dm *DockerManager) Version() (kubecontainer.Version, error) {
return nil, fmt.Errorf("docker: failed to get docker version: %v", err)
}
engineVersion := env.Get("Version")
version, err := docker.NewAPIVersion(engineVersion)
if err != nil {
glog.Errorf("docker: failed to parse docker server version %q: %v", engineVersion, err)
return nil, fmt.Errorf("docker: failed to parse docker server version %q: %v", engineVersion, err)
}
return dockerVersion(version), nil
}
func (dm *DockerManager) APIVersion() (kubecontainer.Version, error) {
env, err := dm.client.Version()
if err != nil {
return nil, fmt.Errorf("docker: failed to get docker version: %v", err)
}
apiVersion := env.Get("ApiVersion")
version, err := docker.NewAPIVersion(apiVersion)
if err != nil {
glog.Errorf("docker: failed to parse docker server version %q: %v", apiVersion, err)
return nil, fmt.Errorf("docker: failed to parse docker server version %q: %v", apiVersion, err)
glog.Errorf("docker: failed to parse docker api version %q: %v", apiVersion, err)
return nil, fmt.Errorf("docker: failed to parse docker api version %q: %v", apiVersion, err)
}
return dockerVersion(version), nil
}
@ -993,7 +1008,7 @@ func (dm *DockerManager) Version() (kubecontainer.Version, error) {
var dockerAPIVersionWithExec = "1.15"
func (dm *DockerManager) nativeExecSupportExists() (bool, error) {
version, err := dm.Version()
version, err := dm.APIVersion()
if err != nil {
return false, err
}

19
pkg/kubelet/kubelet.go
View File

@ -2438,14 +2438,6 @@ func (kl *Kubelet) LatestLoopEntryTime() time.Time {
return val.(time.Time)
}
// Returns the container runtime version for this Kubelet.
func (kl *Kubelet) GetContainerRuntimeVersion() (kubecontainer.Version, error) {
if kl.containerRuntime == nil {
return nil, fmt.Errorf("no container runtime")
}
return kl.containerRuntime.Version()
}
func (kl *Kubelet) validatePodPhase(podStatus *api.PodStatus) error {
switch podStatus.Phase {
case api.PodRunning, api.PodSucceeded, api.PodFailed:
@ -2768,8 +2760,13 @@ func (kl *Kubelet) setNodeStatusVersionInfo(node *api.Node) {
} else {
node.Status.NodeInfo.KernelVersion = verinfo.KernelVersion
node.Status.NodeInfo.OSImage = verinfo.ContainerOsVersion
// TODO: Determine the runtime is docker or rocket
node.Status.NodeInfo.ContainerRuntimeVersion = "docker://" + verinfo.DockerVersion
runtimeVersion := "Unknown"
if runtimeVer, err := kl.containerRuntime.Version(); err == nil {
runtimeVersion = runtimeVer.String()
}
node.Status.NodeInfo.ContainerRuntimeVersion = fmt.Sprintf("%s://%s", kl.containerRuntime.Type(), runtimeVersion)
node.Status.NodeInfo.KubeletVersion = version.Get().String()
// TODO: kube-proxy might be different version from kubelet in the future
node.Status.NodeInfo.KubeProxyVersion = version.Get().String()
@ -2959,7 +2956,7 @@ func (kl *Kubelet) setNodeStatus(node *api.Node) error {
func (kl *Kubelet) isContainerRuntimeVersionCompatible() error {
switch kl.GetRuntime().Type() {
case "docker":
version, err := kl.GetContainerRuntimeVersion()
version, err := kl.GetRuntime().APIVersion()
if err != nil {
return nil
}

20
pkg/kubelet/kubelet_test.go
View File

@ -2521,6 +2521,9 @@ func updateDiskSpacePolicy(kubelet *Kubelet, mockCadvisor *cadvisor.Mock, rootCa
func TestUpdateNewNodeStatus(t *testing.T) {
testKubelet := newTestKubelet(t)
kubelet := testKubelet.kubelet
fakeRuntime := testKubelet.fakeRuntime
fakeRuntime.RuntimeType = "docker"
fakeRuntime.VersionInfo = "1.5.0"
kubeClient := testKubelet.fakeKubeClient
kubeClient.ReactionChain = testclient.NewSimpleFake(&api.NodeList{Items: []api.Node{
{ObjectMeta: api.ObjectMeta{Name: testKubeletHostname}},
@ -2538,7 +2541,6 @@ func TestUpdateNewNodeStatus(t *testing.T) {
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
DockerVersion: "1.5.0",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)
@ -2662,7 +2664,6 @@ func TestUpdateNewNodeOutOfDiskStatusWithTransitionFrequency(t *testing.T) {
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
DockerVersion: "1.5.0",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)
@ -2724,7 +2725,8 @@ func testDockerRuntimeVersion(t *testing.T) {
kubelet := testKubelet.kubelet
fakeRuntime := testKubelet.fakeRuntime
fakeRuntime.RuntimeType = "docker"
fakeRuntime.VersionInfo = "1.18"
fakeRuntime.VersionInfo = "1.5.0"
fakeRuntime.APIVersionInfo = "1.18"
kubeClient := testKubelet.fakeKubeClient
kubeClient.ReactionChain = testclient.NewSimpleFake(&api.NodeList{Items: []api.Node{
{ObjectMeta: api.ObjectMeta{Name: testKubeletHostname}},
@ -2741,7 +2743,6 @@ func testDockerRuntimeVersion(t *testing.T) {
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
DockerVersion: "1.5.0",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)
@ -2866,6 +2867,9 @@ func testDockerRuntimeVersion(t *testing.T) {
func TestUpdateExistingNodeStatus(t *testing.T) {
testKubelet := newTestKubelet(t)
kubelet := testKubelet.kubelet
fakeRuntime := testKubelet.fakeRuntime
fakeRuntime.RuntimeType = "docker"
fakeRuntime.VersionInfo = "1.5.0"
kubeClient := testKubelet.fakeKubeClient
kubeClient.ReactionChain = testclient.NewSimpleFake(&api.NodeList{Items: []api.Node{
{
@ -2916,7 +2920,6 @@ func TestUpdateExistingNodeStatus(t *testing.T) {
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
DockerVersion: "1.5.0",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)
@ -3179,10 +3182,8 @@ func TestUpdateNodeStatusWithoutContainerRuntime(t *testing.T) {
kubelet := testKubelet.kubelet
kubeClient := testKubelet.fakeKubeClient
fakeRuntime := testKubelet.fakeRuntime
// This causes returning an error from GetContainerRuntimeVersion() which
// simulates that container runtime is down.
fakeRuntime.VersionInfo = ""
fakeRuntime.RuntimeType = "docker"
fakeRuntime.VersionInfo = "1.5.0"
kubeClient.ReactionChain = testclient.NewSimpleFake(&api.NodeList{Items: []api.Node{
{ObjectMeta: api.ObjectMeta{Name: testKubeletHostname}},
}}).ReactionChain
@ -3199,7 +3200,6 @@ func TestUpdateNodeStatusWithoutContainerRuntime(t *testing.T) {
versionInfo := &cadvisorapi.VersionInfo{
KernelVersion: "3.16.0-0.bpo.4-amd64",
ContainerOsVersion: "Debian GNU/Linux 7 (wheezy)",
DockerVersion: "1.5.0",
}
mockCadvisor.On("VersionInfo").Return(versionInfo, nil)

4
pkg/kubelet/rkt/rkt.go
View File

@ -971,6 +971,10 @@ func (r *Runtime) Version() (kubecontainer.Version, error) {
return r.binVersion, nil
}
func (r *Runtime) APIVersion() (kubecontainer.Version, error) {
return r.binVersion, nil
}
// SyncPod syncs the running pod to match the specified desired pod.
func (r *Runtime) SyncPod(pod *api.Pod, podStatus api.PodStatus, internalPodStatus *kubecontainer.PodStatus, pullSecrets []api.Secret, backOff *util.Backoff) error {
// TODO: (random-liu) Stop using running pod in SyncPod()