438 lines
13 KiB
Go
438 lines
13 KiB
Go
/*
|
|
Copyright The containerd Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package server
|
|
|
|
import (
|
|
"os"
|
|
"path/filepath"
|
|
"testing"
|
|
|
|
imagespec "github.com/opencontainers/image-spec/specs-go/v1"
|
|
runtimespec "github.com/opencontainers/runtime-spec/specs-go"
|
|
"github.com/opencontainers/selinux/go-selinux"
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
|
|
|
|
"github.com/containerd/containerd/pkg/cri/annotations"
|
|
"github.com/containerd/containerd/pkg/cri/opts"
|
|
ostesting "github.com/containerd/containerd/pkg/os/testing"
|
|
)
|
|
|
|
func getRunPodSandboxTestData() (*runtime.PodSandboxConfig, *imagespec.ImageConfig, func(*testing.T, string, *runtimespec.Spec)) {
|
|
config := &runtime.PodSandboxConfig{
|
|
Metadata: &runtime.PodSandboxMetadata{
|
|
Name: "test-name",
|
|
Uid: "test-uid",
|
|
Namespace: "test-ns",
|
|
Attempt: 1,
|
|
},
|
|
Hostname: "test-hostname",
|
|
LogDirectory: "test-log-directory",
|
|
Labels: map[string]string{"a": "b"},
|
|
Annotations: map[string]string{"c": "d"},
|
|
Linux: &runtime.LinuxPodSandboxConfig{
|
|
CgroupParent: "/test/cgroup/parent",
|
|
},
|
|
}
|
|
imageConfig := &imagespec.ImageConfig{
|
|
Env: []string{"a=b", "c=d"},
|
|
Entrypoint: []string{"/pause"},
|
|
Cmd: []string{"forever"},
|
|
WorkingDir: "/workspace",
|
|
}
|
|
specCheck := func(t *testing.T, id string, spec *runtimespec.Spec) {
|
|
assert.Equal(t, "test-hostname", spec.Hostname)
|
|
assert.Equal(t, getCgroupsPath("/test/cgroup/parent", id), spec.Linux.CgroupsPath)
|
|
assert.Equal(t, relativeRootfsPath, spec.Root.Path)
|
|
assert.Equal(t, true, spec.Root.Readonly)
|
|
assert.Contains(t, spec.Process.Env, "a=b", "c=d")
|
|
assert.Equal(t, []string{"/pause", "forever"}, spec.Process.Args)
|
|
assert.Equal(t, "/workspace", spec.Process.Cwd)
|
|
assert.EqualValues(t, *spec.Linux.Resources.CPU.Shares, opts.DefaultSandboxCPUshares)
|
|
assert.EqualValues(t, *spec.Process.OOMScoreAdj, defaultSandboxOOMAdj)
|
|
|
|
t.Logf("Check PodSandbox annotations")
|
|
assert.Contains(t, spec.Annotations, annotations.SandboxID)
|
|
assert.EqualValues(t, spec.Annotations[annotations.SandboxID], id)
|
|
|
|
assert.Contains(t, spec.Annotations, annotations.ContainerType)
|
|
assert.EqualValues(t, spec.Annotations[annotations.ContainerType], annotations.ContainerTypeSandbox)
|
|
|
|
assert.Contains(t, spec.Annotations, annotations.SandboxNamespace)
|
|
assert.EqualValues(t, spec.Annotations[annotations.SandboxNamespace], "test-ns")
|
|
|
|
assert.Contains(t, spec.Annotations, annotations.SandboxName)
|
|
assert.EqualValues(t, spec.Annotations[annotations.SandboxName], "test-name")
|
|
|
|
assert.Contains(t, spec.Annotations, annotations.SandboxLogDir)
|
|
assert.EqualValues(t, spec.Annotations[annotations.SandboxLogDir], "test-log-directory")
|
|
|
|
if selinux.GetEnabled() {
|
|
assert.NotEqual(t, "", spec.Process.SelinuxLabel)
|
|
assert.NotEqual(t, "", spec.Linux.MountLabel)
|
|
}
|
|
}
|
|
return config, imageConfig, specCheck
|
|
}
|
|
|
|
func TestLinuxSandboxContainerSpec(t *testing.T) {
|
|
testID := "test-id"
|
|
nsPath := "test-cni"
|
|
for desc, test := range map[string]struct {
|
|
configChange func(*runtime.PodSandboxConfig)
|
|
specCheck func(*testing.T, *runtimespec.Spec)
|
|
expectErr bool
|
|
}{
|
|
"spec should reflect original config": {
|
|
specCheck: func(t *testing.T, spec *runtimespec.Spec) {
|
|
// runtime spec should have expected namespaces enabled by default.
|
|
require.NotNil(t, spec.Linux)
|
|
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.NetworkNamespace,
|
|
Path: nsPath,
|
|
})
|
|
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.UTSNamespace,
|
|
})
|
|
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.PIDNamespace,
|
|
})
|
|
assert.Contains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.IPCNamespace,
|
|
})
|
|
},
|
|
},
|
|
"host namespace": {
|
|
configChange: func(c *runtime.PodSandboxConfig) {
|
|
c.Linux.SecurityContext = &runtime.LinuxSandboxSecurityContext{
|
|
NamespaceOptions: &runtime.NamespaceOption{
|
|
Network: runtime.NamespaceMode_NODE,
|
|
Pid: runtime.NamespaceMode_NODE,
|
|
Ipc: runtime.NamespaceMode_NODE,
|
|
},
|
|
}
|
|
},
|
|
specCheck: func(t *testing.T, spec *runtimespec.Spec) {
|
|
// runtime spec should disable expected namespaces in host mode.
|
|
require.NotNil(t, spec.Linux)
|
|
assert.NotContains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.NetworkNamespace,
|
|
})
|
|
assert.NotContains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.UTSNamespace,
|
|
})
|
|
assert.NotContains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.PIDNamespace,
|
|
})
|
|
assert.NotContains(t, spec.Linux.Namespaces, runtimespec.LinuxNamespace{
|
|
Type: runtimespec.IPCNamespace,
|
|
})
|
|
},
|
|
},
|
|
"should set supplemental groups correctly": {
|
|
configChange: func(c *runtime.PodSandboxConfig) {
|
|
c.Linux.SecurityContext = &runtime.LinuxSandboxSecurityContext{
|
|
SupplementalGroups: []int64{1111, 2222},
|
|
}
|
|
},
|
|
specCheck: func(t *testing.T, spec *runtimespec.Spec) {
|
|
require.NotNil(t, spec.Process)
|
|
assert.Contains(t, spec.Process.User.AdditionalGids, uint32(1111))
|
|
assert.Contains(t, spec.Process.User.AdditionalGids, uint32(2222))
|
|
},
|
|
},
|
|
} {
|
|
t.Logf("TestCase %q", desc)
|
|
c := newTestCRIService()
|
|
config, imageConfig, specCheck := getRunPodSandboxTestData()
|
|
if test.configChange != nil {
|
|
test.configChange(config)
|
|
}
|
|
spec, err := c.sandboxContainerSpec(testID, config, imageConfig, nsPath, nil)
|
|
if test.expectErr {
|
|
assert.Error(t, err)
|
|
assert.Nil(t, spec)
|
|
continue
|
|
}
|
|
assert.NoError(t, err)
|
|
assert.NotNil(t, spec)
|
|
specCheck(t, testID, spec)
|
|
if test.specCheck != nil {
|
|
test.specCheck(t, spec)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestSetupSandboxFiles(t *testing.T) {
|
|
const (
|
|
testID = "test-id"
|
|
realhostname = "test-real-hostname"
|
|
)
|
|
for desc, test := range map[string]struct {
|
|
dnsConfig *runtime.DNSConfig
|
|
hostname string
|
|
ipcMode runtime.NamespaceMode
|
|
expectedCalls []ostesting.CalledDetail
|
|
}{
|
|
"should check host /dev/shm existence when ipc mode is NODE": {
|
|
ipcMode: runtime.NamespaceMode_NODE,
|
|
expectedCalls: []ostesting.CalledDetail{
|
|
{
|
|
Name: "Hostname",
|
|
},
|
|
{
|
|
Name: "WriteFile",
|
|
Arguments: []interface{}{
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "hostname"),
|
|
[]byte(realhostname + "\n"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/hosts",
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "hosts"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/resolv.conf",
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "resolv.conf"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "Stat",
|
|
Arguments: []interface{}{"/dev/shm"},
|
|
},
|
|
},
|
|
},
|
|
"should create new /etc/resolv.conf if DNSOptions is set": {
|
|
dnsConfig: &runtime.DNSConfig{
|
|
Servers: []string{"8.8.8.8"},
|
|
Searches: []string{"114.114.114.114"},
|
|
Options: []string{"timeout:1"},
|
|
},
|
|
ipcMode: runtime.NamespaceMode_NODE,
|
|
expectedCalls: []ostesting.CalledDetail{
|
|
{
|
|
Name: "Hostname",
|
|
},
|
|
{
|
|
Name: "WriteFile",
|
|
Arguments: []interface{}{
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "hostname"),
|
|
[]byte(realhostname + "\n"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/hosts",
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "hosts"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "WriteFile",
|
|
Arguments: []interface{}{
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "resolv.conf"),
|
|
[]byte(`search 114.114.114.114
|
|
nameserver 8.8.8.8
|
|
options timeout:1
|
|
`), os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "Stat",
|
|
Arguments: []interface{}{"/dev/shm"},
|
|
},
|
|
},
|
|
},
|
|
"should create sandbox shm when ipc namespace mode is not NODE": {
|
|
ipcMode: runtime.NamespaceMode_POD,
|
|
expectedCalls: []ostesting.CalledDetail{
|
|
{
|
|
Name: "Hostname",
|
|
},
|
|
{
|
|
Name: "WriteFile",
|
|
Arguments: []interface{}{
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "hostname"),
|
|
[]byte(realhostname + "\n"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/hosts",
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "hosts"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/resolv.conf",
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "resolv.conf"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "MkdirAll",
|
|
Arguments: []interface{}{
|
|
filepath.Join(testStateDir, sandboxesDir, testID, "shm"),
|
|
os.FileMode(0700),
|
|
},
|
|
},
|
|
{
|
|
Name: "Mount",
|
|
// Ignore arguments which are too complex to check.
|
|
},
|
|
},
|
|
},
|
|
"should create /etc/hostname when hostname is set": {
|
|
hostname: "test-hostname",
|
|
ipcMode: runtime.NamespaceMode_NODE,
|
|
expectedCalls: []ostesting.CalledDetail{
|
|
{
|
|
Name: "WriteFile",
|
|
Arguments: []interface{}{
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "hostname"),
|
|
[]byte("test-hostname\n"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/hosts",
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "hosts"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "CopyFile",
|
|
Arguments: []interface{}{
|
|
"/etc/resolv.conf",
|
|
filepath.Join(testRootDir, sandboxesDir, testID, "resolv.conf"),
|
|
os.FileMode(0644),
|
|
},
|
|
},
|
|
{
|
|
Name: "Stat",
|
|
Arguments: []interface{}{"/dev/shm"},
|
|
},
|
|
},
|
|
},
|
|
} {
|
|
t.Logf("TestCase %q", desc)
|
|
c := newTestCRIService()
|
|
c.os.(*ostesting.FakeOS).HostnameFn = func() (string, error) {
|
|
return realhostname, nil
|
|
}
|
|
cfg := &runtime.PodSandboxConfig{
|
|
Hostname: test.hostname,
|
|
DnsConfig: test.dnsConfig,
|
|
Linux: &runtime.LinuxPodSandboxConfig{
|
|
SecurityContext: &runtime.LinuxSandboxSecurityContext{
|
|
NamespaceOptions: &runtime.NamespaceOption{
|
|
Ipc: test.ipcMode,
|
|
},
|
|
},
|
|
},
|
|
}
|
|
c.setupSandboxFiles(testID, cfg)
|
|
calls := c.os.(*ostesting.FakeOS).GetCalls()
|
|
assert.Len(t, calls, len(test.expectedCalls))
|
|
for i, expected := range test.expectedCalls {
|
|
if expected.Arguments == nil {
|
|
// Ignore arguments.
|
|
expected.Arguments = calls[i].Arguments
|
|
}
|
|
assert.Equal(t, expected, calls[i])
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestParseDNSOption(t *testing.T) {
|
|
for desc, test := range map[string]struct {
|
|
servers []string
|
|
searches []string
|
|
options []string
|
|
expectedContent string
|
|
expectErr bool
|
|
}{
|
|
"empty dns options should return empty content": {},
|
|
"non-empty dns options should return correct content": {
|
|
servers: []string{"8.8.8.8", "server.google.com"},
|
|
searches: []string{"114.114.114.114"},
|
|
options: []string{"timeout:1"},
|
|
expectedContent: `search 114.114.114.114
|
|
nameserver 8.8.8.8
|
|
nameserver server.google.com
|
|
options timeout:1
|
|
`,
|
|
},
|
|
"should return error if dns search exceeds limit(6)": {
|
|
searches: []string{
|
|
"server0.google.com",
|
|
"server1.google.com",
|
|
"server2.google.com",
|
|
"server3.google.com",
|
|
"server4.google.com",
|
|
"server5.google.com",
|
|
"server6.google.com",
|
|
},
|
|
expectErr: true,
|
|
},
|
|
} {
|
|
t.Logf("TestCase %q", desc)
|
|
resolvContent, err := parseDNSOptions(test.servers, test.searches, test.options)
|
|
if test.expectErr {
|
|
assert.Error(t, err)
|
|
continue
|
|
}
|
|
assert.NoError(t, err)
|
|
assert.Equal(t, resolvContent, test.expectedContent)
|
|
}
|
|
}
|
|
|
|
func TestSandboxDisableCgroup(t *testing.T) {
|
|
config, imageConfig, _ := getRunPodSandboxTestData()
|
|
c := newTestCRIService()
|
|
c.config.DisableCgroup = true
|
|
spec, err := c.sandboxContainerSpec("test-id", config, imageConfig, "test-cni", []string{})
|
|
require.NoError(t, err)
|
|
|
|
t.Log("resource limit should not be set")
|
|
assert.Nil(t, spec.Linux.Resources.Memory)
|
|
assert.Nil(t, spec.Linux.Resources.CPU)
|
|
|
|
t.Log("cgroup path should be empty")
|
|
assert.Empty(t, spec.Linux.CgroupsPath)
|
|
}
|
|
|
|
// TODO(random-liu): [P1] Add unit test for different error cases to make sure
|
|
// the function cleans up on error properly.
|