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Remove extra operations when generating pod sandbox configuration.

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This commit is contained in:
Random-Liu
2017-02-24 12:55:54 -08:00
parent ee88325f81
commit 8380148d48
12 changed files with 124 additions and 95 deletions
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1
pkg/kubelet/container/BUILD
View File

@@ -29,6 +29,7 @@ go_library(
"//pkg/api:go_default_library",
"//pkg/api/v1:go_default_library",
"//pkg/kubelet/api/v1alpha1/runtime:go_default_library",
"//pkg/kubelet/cm:go_default_library",
"//pkg/kubelet/events:go_default_library",
"//pkg/kubelet/util/format:go_default_library",
"//pkg/kubelet/util/ioutils:go_default_library",

35
pkg/kubelet/container/helpers.go
View File

@@ -33,6 +33,7 @@ import (
"k8s.io/client-go/tools/record"
"k8s.io/kubernetes/pkg/api/v1"
runtimeapi "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
"k8s.io/kubernetes/pkg/kubelet/cm"
"k8s.io/kubernetes/pkg/kubelet/events"
"k8s.io/kubernetes/pkg/kubelet/util/format"
"k8s.io/kubernetes/pkg/kubelet/util/ioutils"
@@ -50,6 +51,9 @@ type HandlerRunner interface {
type RuntimeHelper interface {
GenerateRunContainerOptions(pod *v1.Pod, container *v1.Container, podIP string) (*RunContainerOptions, error)
GetClusterDNS(pod *v1.Pod) (dnsServers []string, dnsSearches []string, err error)
// GetPodCgroupParent returns the the CgroupName identifer, and its literal cgroupfs form on the host
// of a pod.
GetPodCgroupParent(pod *v1.Pod) (cm.CgroupName, string)
GetPodDir(podUID types.UID) string
GeneratePodHostNameAndDomain(pod *v1.Pod) (hostname string, hostDomain string, err error)
// GetExtraSupplementalGroupsForPod returns a list of the extra
@@ -306,3 +310,34 @@ func MakeCapabilities(capAdd []v1.Capability, capDrop []v1.Capability) ([]string
}
return addCaps, dropCaps
}
// MakePortMappings creates internal port mapping from api port mapping.
func MakePortMappings(container *v1.Container) (ports []PortMapping) {
names := make(map[string]struct{})
for _, p := range container.Ports {
pm := PortMapping{
HostPort: int(p.HostPort),
ContainerPort: int(p.ContainerPort),
Protocol: p.Protocol,
HostIP: p.HostIP,
}
// We need to create some default port name if it's not specified, since
// this is necessary for rkt.
// http://issue.k8s.io/7710
if p.Name == "" {
pm.Name = fmt.Sprintf("%s-%s:%d", container.Name, p.Protocol, p.ContainerPort)
} else {
pm.Name = fmt.Sprintf("%s-%s", container.Name, p.Name)
}
// Protect against exposing the same protocol-port more than once in a container.
if _, ok := names[pm.Name]; ok {
glog.Warningf("Port name conflicted, %q is defined more than once", pm.Name)
continue
}
ports = append(ports, pm)
names[pm.Name] = struct{}{}
}
return
}

53
pkg/kubelet/container/helpers_test.go
View File

@@ -20,6 +20,8 @@ import (
"reflect"
"testing"
"github.com/stretchr/testify/assert"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/kubernetes/pkg/api/v1"
)
@@ -253,3 +255,54 @@ func TestHasPrivilegedContainer(t *testing.T) {
}
}
}
func TestMakePortMappings(t *testing.T) {
port := func(name string, protocol v1.Protocol, containerPort, hostPort int32, ip string) v1.ContainerPort {
return v1.ContainerPort{
Name: name,
Protocol: protocol,
ContainerPort: containerPort,
HostPort: hostPort,
HostIP: ip,
}
}
portMapping := func(name string, protocol v1.Protocol, containerPort, hostPort int, ip string) PortMapping {
return PortMapping{
Name: name,
Protocol: protocol,
ContainerPort: containerPort,
HostPort: hostPort,
HostIP: ip,
}
}
tests := []struct {
container *v1.Container
expectedPortMappings []PortMapping
}{
{
&v1.Container{
Name: "fooContainer",
Ports: []v1.ContainerPort{
port("", v1.ProtocolTCP, 80, 8080, "127.0.0.1"),
port("", v1.ProtocolTCP, 443, 4343, "192.168.0.1"),
port("foo", v1.ProtocolUDP, 555, 5555, ""),
// Duplicated, should be ignored.
port("foo", v1.ProtocolUDP, 888, 8888, ""),
// Duplicated, should be ignored.
port("", v1.ProtocolTCP, 80, 8888, ""),
},
},
[]PortMapping{
portMapping("fooContainer-TCP:80", v1.ProtocolTCP, 80, 8080, "127.0.0.1"),
portMapping("fooContainer-TCP:443", v1.ProtocolTCP, 443, 4343, "192.168.0.1"),
portMapping("fooContainer-foo", v1.ProtocolUDP, 555, 5555, ""),
},
},
}
for i, tt := range tests {
actual := MakePortMappings(tt.container)
assert.Equal(t, tt.expectedPortMappings, actual, "[%d]", i)
}
}

1
pkg/kubelet/dockertools/BUILD
View File

@@ -107,6 +107,7 @@ go_test(
"//pkg/api/v1:go_default_library",
"//pkg/apis/componentconfig:go_default_library",
"//pkg/credentialprovider:go_default_library",
"//pkg/kubelet/cm:go_default_library",
"//pkg/kubelet/container:go_default_library",
"//pkg/kubelet/container/testing:go_default_library",
"//pkg/kubelet/events:go_default_library",

6
pkg/kubelet/dockertools/docker_manager_test.go
View File

@@ -50,6 +50,7 @@ import (
"k8s.io/kubernetes/pkg/api/testapi"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/apis/componentconfig"
"k8s.io/kubernetes/pkg/kubelet/cm"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
containertest "k8s.io/kubernetes/pkg/kubelet/container/testing"
"k8s.io/kubernetes/pkg/kubelet/images"
@@ -87,6 +88,7 @@ func (f *fakeHTTP) Get(url string) (*http.Response, error) {
// fakeRuntimeHelper implementes kubecontainer.RuntimeHelper inter
// faces for testing purposes.
// TODO(random-liu): Move this into pkg/kubelet/container/testing
type fakeRuntimeHelper struct{}
var _ kubecontainer.RuntimeHelper = &fakeRuntimeHelper{}
@@ -106,6 +108,10 @@ func (f *fakeRuntimeHelper) GenerateRunContainerOptions(pod *v1.Pod, container *
return &opts, nil
}
func (f *fakeRuntimeHelper) GetPodCgroupParent(pod *v1.Pod) (cm.CgroupName, string) {
return "", ""
}
func (f *fakeRuntimeHelper) GetClusterDNS(pod *v1.Pod) ([]string, []string, error) {
return nil, nil, fmt.Errorf("not implemented")
}

44
pkg/kubelet/kubelet_pods.go
View File

@@ -203,36 +203,6 @@ func ensureHostsFile(fileName, hostIP, hostName, hostDomainName string) error {
return ioutil.WriteFile(fileName, buffer.Bytes(), 0644)
}
func makePortMappings(container *v1.Container) (ports []kubecontainer.PortMapping) {
names := make(map[string]struct{})
for _, p := range container.Ports {
pm := kubecontainer.PortMapping{
HostPort: int(p.HostPort),
ContainerPort: int(p.ContainerPort),
Protocol: p.Protocol,
HostIP: p.HostIP,
}
// We need to create some default port name if it's not specified, since
// this is necessary for rkt.
// http://issue.k8s.io/7710
if p.Name == "" {
pm.Name = fmt.Sprintf("%s-%s:%d", container.Name, p.Protocol, p.ContainerPort)
} else {
pm.Name = fmt.Sprintf("%s-%s", container.Name, p.Name)
}
// Protect against exposing the same protocol-port more than once in a container.
if _, ok := names[pm.Name]; ok {
glog.Warningf("Port name conflicted, %q is defined more than once", pm.Name)
continue
}
ports = append(ports, pm)
names[pm.Name] = struct{}{}
}
return
}
// truncatePodHostnameIfNeeded truncates the pod hostname if it's longer than 63 chars.
func truncatePodHostnameIfNeeded(podName, hostname string) (string, error) {
// Cap hostname at 63 chars (specification is 64bytes which is 63 chars and the null terminating char).
@@ -293,13 +263,18 @@ func (kl *Kubelet) GeneratePodHostNameAndDomain(pod *v1.Pod) (string, string, er
return hostname, hostDomain, nil
}
// GetPodCgroupParent gets pod cgroup parent from container manager.
func (kl *Kubelet) GetPodCgroupParent(pod *v1.Pod) (cm.CgroupName, string) {
pcm := kl.containerManager.NewPodContainerManager()
return pcm.GetPodContainerName(pod)
}
// GenerateRunContainerOptions generates the RunContainerOptions, which can be used by
// the container runtime to set parameters for launching a container.
func (kl *Kubelet) GenerateRunContainerOptions(pod *v1.Pod, container *v1.Container, podIP string) (*kubecontainer.RunContainerOptions, error) {
var err error
pcm := kl.containerManager.NewPodContainerManager()
_, podContainerName := pcm.GetPodContainerName(pod)
opts := &kubecontainer.RunContainerOptions{CgroupParent: podContainerName}
_, cgroupParent := kl.GetPodCgroupParent(pod)
opts := &kubecontainer.RunContainerOptions{CgroupParent: cgroupParent}
hostname, hostDomainName, err := kl.GeneratePodHostNameAndDomain(pod)
if err != nil {
return nil, err
@@ -308,7 +283,8 @@ func (kl *Kubelet) GenerateRunContainerOptions(pod *v1.Pod, container *v1.Contai
podName := volumehelper.GetUniquePodName(pod)
volumes := kl.volumeManager.GetMountedVolumesForPod(podName)
opts.PortMappings = makePortMappings(container)
opts.PortMappings = kubecontainer.MakePortMappings(container)
// TODO(random-liu): Move following convert functions into pkg/kubelet/container
opts.Devices = makeDevices(container)
opts.Mounts, err = makeMounts(pod, kl.getPodDir(pod.UID), container, hostname, hostDomainName, podIP, volumes)

51
pkg/kubelet/kubelet_test.go
View File

@@ -1154,57 +1154,6 @@ func TestFilterOutTerminatedPods(t *testing.T) {
assert.Equal(t, expected, actual)
}
func TestMakePortMappings(t *testing.T) {
port := func(name string, protocol v1.Protocol, containerPort, hostPort int32, ip string) v1.ContainerPort {
return v1.ContainerPort{
Name: name,
Protocol: protocol,
ContainerPort: containerPort,
HostPort: hostPort,
HostIP: ip,
}
}
portMapping := func(name string, protocol v1.Protocol, containerPort, hostPort int, ip string) kubecontainer.PortMapping {
return kubecontainer.PortMapping{
Name: name,
Protocol: protocol,
ContainerPort: containerPort,
HostPort: hostPort,
HostIP: ip,
}
}
tests := []struct {
container *v1.Container
expectedPortMappings []kubecontainer.PortMapping
}{
{
&v1.Container{
Name: "fooContainer",
Ports: []v1.ContainerPort{
port("", v1.ProtocolTCP, 80, 8080, "127.0.0.1"),
port("", v1.ProtocolTCP, 443, 4343, "192.168.0.1"),
port("foo", v1.ProtocolUDP, 555, 5555, ""),
// Duplicated, should be ignored.
port("foo", v1.ProtocolUDP, 888, 8888, ""),
// Duplicated, should be ignored.
port("", v1.ProtocolTCP, 80, 8888, ""),
},
},
[]kubecontainer.PortMapping{
portMapping("fooContainer-TCP:80", v1.ProtocolTCP, 80, 8080, "127.0.0.1"),
portMapping("fooContainer-TCP:443", v1.ProtocolTCP, 443, 4343, "192.168.0.1"),
portMapping("fooContainer-foo", v1.ProtocolUDP, 555, 5555, ""),
},
},
}
for i, tt := range tests {
actual := makePortMappings(tt.container)
assert.Equal(t, tt.expectedPortMappings, actual, "[%d]", i)
}
}
func TestSyncPodsSetStatusToFailedForPodsThatRunTooLong(t *testing.T) {
testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
defer testKubelet.Cleanup()

1
pkg/kubelet/kuberuntime/BUILD
View File

@@ -32,6 +32,7 @@ go_library(
"//pkg/credentialprovider:go_default_library",
"//pkg/kubelet/api:go_default_library",
"//pkg/kubelet/api/v1alpha1/runtime:go_default_library",
"//pkg/kubelet/cm:go_default_library",
"//pkg/kubelet/container:go_default_library",
"//pkg/kubelet/dockertools:go_default_library",
"//pkg/kubelet/events:go_default_library",

5
pkg/kubelet/kuberuntime/fake_kuberuntime_manager.go
View File

@@ -29,6 +29,7 @@ import (
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/credentialprovider"
internalapi "k8s.io/kubernetes/pkg/kubelet/api"
"k8s.io/kubernetes/pkg/kubelet/cm"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
"k8s.io/kubernetes/pkg/kubelet/images"
"k8s.io/kubernetes/pkg/kubelet/lifecycle"
@@ -49,6 +50,10 @@ func (f *fakeHTTP) Get(url string) (*http.Response, error) {
// fakeRuntimeHelper implements kubecontainer.RuntimeHelper interfaces for testing purposes.
type fakeRuntimeHelper struct{}
func (f *fakeRuntimeHelper) GetPodCgroupParent(pod *v1.Pod) (cm.CgroupName, string) {
return "", ""
}
func (f *fakeRuntimeHelper) GenerateRunContainerOptions(pod *v1.Pod, container *v1.Container, podIP string) (*kubecontainer.RunContainerOptions, error) {
var opts kubecontainer.RunContainerOptions
if len(container.TerminationMessagePath) != 0 {

15
pkg/kubelet/kuberuntime/kuberuntime_sandbox.go
View File

@@ -95,17 +95,12 @@ func (m *kubeGenericRuntimeManager) generatePodSandboxConfig(pod *v1.Pod, attemp
logDir := buildPodLogsDirectory(pod.UID)
podSandboxConfig.LogDirectory = logDir
cgroupParent := ""
portMappings := []*runtimeapi.PortMapping{}
for _, c := range pod.Spec.Containers {
// TODO: use a separate interface to only generate portmappings
opts, err := m.runtimeHelper.GenerateRunContainerOptions(pod, &c, "")
if err != nil {
return nil, err
}
containerPortMappings := kubecontainer.MakePortMappings(&c)
for idx := range opts.PortMappings {
port := opts.PortMappings[idx]
for idx := range containerPortMappings {
port := containerPortMappings[idx]
hostPort := int32(port.HostPort)
containerPort := int32(port.ContainerPort)
protocol := toRuntimeProtocol(port.Protocol)
@@ -117,9 +112,9 @@ func (m *kubeGenericRuntimeManager) generatePodSandboxConfig(pod *v1.Pod, attemp
})
}
// TODO: refactor kubelet to get cgroup parent for pod instead of containers
cgroupParent = opts.CgroupParent
}
_, cgroupParent := m.runtimeHelper.GetPodCgroupParent(pod)
podSandboxConfig.Linux = m.generatePodSandboxLinuxConfig(pod, cgroupParent)
if len(portMappings) > 0 {
podSandboxConfig.PortMappings = portMappings

1
pkg/kubelet/rkt/BUILD
View File

@@ -71,6 +71,7 @@ go_test(
tags = ["automanaged"],
deps = [
"//pkg/api/v1:go_default_library",
"//pkg/kubelet/cm:go_default_library",
"//pkg/kubelet/container:go_default_library",
"//pkg/kubelet/container/testing:go_default_library",
"//pkg/kubelet/lifecycle:go_default_library",

6
pkg/kubelet/rkt/fake_rkt_interface_test.go
View File

@@ -28,6 +28,7 @@ import (
"google.golang.org/grpc"
"k8s.io/apimachinery/pkg/types"
"k8s.io/kubernetes/pkg/api/v1"
"k8s.io/kubernetes/pkg/kubelet/cm"
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
)
@@ -151,6 +152,7 @@ func (f *fakeSystemd) ResetFailedUnit(name string) error {
}
// fakeRuntimeHelper implementes kubecontainer.RuntimeHelper interfaces for testing purpose.
// TODO(random-liu): Move this into pkg/kubelet/container/testing
type fakeRuntimeHelper struct {
dnsServers []string
dnsSearches []string
@@ -163,6 +165,10 @@ func (f *fakeRuntimeHelper) GenerateRunContainerOptions(pod *v1.Pod, container *
return nil, fmt.Errorf("Not implemented")
}
func (f *fakeRuntimeHelper) GetPodCgroupParent(pod *v1.Pod) (cm.CgroupName, string) {
return "", ""
}
func (f *fakeRuntimeHelper) GetClusterDNS(pod *v1.Pod) ([]string, []string, error) {
return f.dnsServers, f.dnsSearches, f.err
}