mirror of https://github.com/k3s-io/k3s
304 lines
9.7 KiB
Go
304 lines
9.7 KiB
Go
/*
|
|
Copyright 2016 The Kubernetes 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 dockershim
|
|
|
|
import (
|
|
"fmt"
|
|
"testing"
|
|
|
|
"github.com/blang/semver"
|
|
dockertypes "github.com/docker/engine-api/types"
|
|
"github.com/stretchr/testify/assert"
|
|
"github.com/stretchr/testify/require"
|
|
|
|
"k8s.io/kubernetes/pkg/api/v1"
|
|
runtimeapi "k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
|
|
"k8s.io/kubernetes/pkg/kubelet/dockertools"
|
|
"k8s.io/kubernetes/pkg/security/apparmor"
|
|
)
|
|
|
|
func TestLabelsAndAnnotationsRoundTrip(t *testing.T) {
|
|
expectedLabels := map[string]string{"foo.123.abc": "baz", "bar.456.xyz": "qwe"}
|
|
expectedAnnotations := map[string]string{"uio.ert": "dfs", "jkl": "asd"}
|
|
// Merge labels and annotations into docker labels.
|
|
dockerLabels := makeLabels(expectedLabels, expectedAnnotations)
|
|
// Extract labels and annotations from docker labels.
|
|
actualLabels, actualAnnotations := extractLabels(dockerLabels)
|
|
assert.Equal(t, expectedLabels, actualLabels)
|
|
assert.Equal(t, expectedAnnotations, actualAnnotations)
|
|
}
|
|
|
|
// TestGetContainerSecurityOpts tests the logic of generating container security options from sandbox annotations.
|
|
// The actual profile loading logic is tested in dockertools.
|
|
// TODO: Migrate the corresponding test to dockershim.
|
|
func TestGetContainerSecurityOpts(t *testing.T) {
|
|
containerName := "bar"
|
|
makeConfig := func(annotations map[string]string) *runtimeapi.PodSandboxConfig {
|
|
return makeSandboxConfigWithLabelsAndAnnotations("pod", "ns", "1234", 1, nil, annotations)
|
|
}
|
|
|
|
tests := []struct {
|
|
msg string
|
|
config *runtimeapi.PodSandboxConfig
|
|
expectedOpts []string
|
|
}{{
|
|
msg: "No security annotations",
|
|
config: makeConfig(nil),
|
|
expectedOpts: []string{"seccomp=unconfined"},
|
|
}, {
|
|
msg: "Seccomp unconfined",
|
|
config: makeConfig(map[string]string{
|
|
v1.SeccompContainerAnnotationKeyPrefix + containerName: "unconfined",
|
|
}),
|
|
expectedOpts: []string{"seccomp=unconfined"},
|
|
}, {
|
|
msg: "Seccomp default",
|
|
config: makeConfig(map[string]string{
|
|
v1.SeccompContainerAnnotationKeyPrefix + containerName: "docker/default",
|
|
}),
|
|
expectedOpts: nil,
|
|
}, {
|
|
msg: "Seccomp pod default",
|
|
config: makeConfig(map[string]string{
|
|
v1.SeccompPodAnnotationKey: "docker/default",
|
|
}),
|
|
expectedOpts: nil,
|
|
}, {
|
|
msg: "AppArmor runtime/default",
|
|
config: makeConfig(map[string]string{
|
|
apparmor.ContainerAnnotationKeyPrefix + containerName: apparmor.ProfileRuntimeDefault,
|
|
}),
|
|
expectedOpts: []string{"seccomp=unconfined"},
|
|
}, {
|
|
msg: "AppArmor local profile",
|
|
config: makeConfig(map[string]string{
|
|
apparmor.ContainerAnnotationKeyPrefix + containerName: apparmor.ProfileNamePrefix + "foo",
|
|
}),
|
|
expectedOpts: []string{"seccomp=unconfined", "apparmor=foo"},
|
|
}, {
|
|
msg: "AppArmor and seccomp profile",
|
|
config: makeConfig(map[string]string{
|
|
v1.SeccompContainerAnnotationKeyPrefix + containerName: "docker/default",
|
|
apparmor.ContainerAnnotationKeyPrefix + containerName: apparmor.ProfileNamePrefix + "foo",
|
|
}),
|
|
expectedOpts: []string{"apparmor=foo"},
|
|
}}
|
|
|
|
for i, test := range tests {
|
|
opts, err := getContainerSecurityOpts(containerName, test.config, "test/seccomp/profile/root", '=')
|
|
assert.NoError(t, err, "TestCase[%d]: %s", i, test.msg)
|
|
assert.Len(t, opts, len(test.expectedOpts), "TestCase[%d]: %s", i, test.msg)
|
|
for _, opt := range test.expectedOpts {
|
|
assert.Contains(t, opts, opt, "TestCase[%d]: %s", i, test.msg)
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestGetSandboxSecurityOpts tests the logic of generating sandbox security options from sandbox annotations.
|
|
func TestGetSandboxSecurityOpts(t *testing.T) {
|
|
makeConfig := func(annotations map[string]string) *runtimeapi.PodSandboxConfig {
|
|
return makeSandboxConfigWithLabelsAndAnnotations("pod", "ns", "1234", 1, nil, annotations)
|
|
}
|
|
|
|
tests := []struct {
|
|
msg string
|
|
config *runtimeapi.PodSandboxConfig
|
|
expectedOpts []string
|
|
}{{
|
|
msg: "No security annotations",
|
|
config: makeConfig(nil),
|
|
expectedOpts: []string{"seccomp=unconfined"},
|
|
}, {
|
|
msg: "Seccomp default",
|
|
config: makeConfig(map[string]string{
|
|
v1.SeccompPodAnnotationKey: "docker/default",
|
|
}),
|
|
expectedOpts: nil,
|
|
}, {
|
|
msg: "Seccomp unconfined",
|
|
config: makeConfig(map[string]string{
|
|
v1.SeccompPodAnnotationKey: "unconfined",
|
|
}),
|
|
expectedOpts: []string{"seccomp=unconfined"},
|
|
}, {
|
|
msg: "Seccomp pod and container profile",
|
|
config: makeConfig(map[string]string{
|
|
v1.SeccompContainerAnnotationKeyPrefix + "test-container": "unconfined",
|
|
v1.SeccompPodAnnotationKey: "docker/default",
|
|
}),
|
|
expectedOpts: nil,
|
|
}}
|
|
|
|
for i, test := range tests {
|
|
opts, err := getSandboxSecurityOpts(test.config, "test/seccomp/profile/root", '=')
|
|
assert.NoError(t, err, "TestCase[%d]: %s", i, test.msg)
|
|
assert.Len(t, opts, len(test.expectedOpts), "TestCase[%d]: %s", i, test.msg)
|
|
for _, opt := range test.expectedOpts {
|
|
assert.Contains(t, opts, opt, "TestCase[%d]: %s", i, test.msg)
|
|
}
|
|
}
|
|
}
|
|
|
|
// TestGetSystclsFromAnnotations tests the logic of getting sysctls from annotations.
|
|
func TestGetSystclsFromAnnotations(t *testing.T) {
|
|
tests := []struct {
|
|
annotations map[string]string
|
|
expectedSysctls map[string]string
|
|
}{{
|
|
annotations: map[string]string{
|
|
v1.SysctlsPodAnnotationKey: "kernel.shmmni=32768,kernel.shmmax=1000000000",
|
|
v1.UnsafeSysctlsPodAnnotationKey: "knet.ipv4.route.min_pmtu=1000",
|
|
},
|
|
expectedSysctls: map[string]string{
|
|
"kernel.shmmni": "32768",
|
|
"kernel.shmmax": "1000000000",
|
|
"knet.ipv4.route.min_pmtu": "1000",
|
|
},
|
|
}, {
|
|
annotations: map[string]string{
|
|
v1.SysctlsPodAnnotationKey: "kernel.shmmni=32768,kernel.shmmax=1000000000",
|
|
},
|
|
expectedSysctls: map[string]string{
|
|
"kernel.shmmni": "32768",
|
|
"kernel.shmmax": "1000000000",
|
|
},
|
|
}, {
|
|
annotations: map[string]string{
|
|
v1.UnsafeSysctlsPodAnnotationKey: "knet.ipv4.route.min_pmtu=1000",
|
|
},
|
|
expectedSysctls: map[string]string{
|
|
"knet.ipv4.route.min_pmtu": "1000",
|
|
},
|
|
}}
|
|
|
|
for i, test := range tests {
|
|
actual, err := getSysctlsFromAnnotations(test.annotations)
|
|
assert.NoError(t, err, "TestCase[%d]", i)
|
|
assert.Len(t, actual, len(test.expectedSysctls), "TestCase[%d]", i)
|
|
assert.Equal(t, test.expectedSysctls, actual, "TestCase[%d]", i)
|
|
}
|
|
}
|
|
|
|
// TestGetUserFromImageUser tests the logic of getting image uid or user name of image user.
|
|
func TestGetUserFromImageUser(t *testing.T) {
|
|
newI64 := func(i int64) *int64 { return &i }
|
|
for c, test := range map[string]struct {
|
|
user string
|
|
uid *int64
|
|
name string
|
|
}{
|
|
"no gid": {
|
|
user: "0",
|
|
uid: newI64(0),
|
|
},
|
|
"uid/gid": {
|
|
user: "0:1",
|
|
uid: newI64(0),
|
|
},
|
|
"empty user": {
|
|
user: "",
|
|
},
|
|
"multiple spearators": {
|
|
user: "1:2:3",
|
|
uid: newI64(1),
|
|
},
|
|
"root username": {
|
|
user: "root:root",
|
|
name: "root",
|
|
},
|
|
"username": {
|
|
user: "test:test",
|
|
name: "test",
|
|
},
|
|
} {
|
|
t.Logf("TestCase - %q", c)
|
|
actualUID, actualName := getUserFromImageUser(test.user)
|
|
assert.Equal(t, test.uid, actualUID)
|
|
assert.Equal(t, test.name, actualName)
|
|
}
|
|
}
|
|
|
|
func TestParsingCreationConflictError(t *testing.T) {
|
|
// Expected error message from docker.
|
|
msg := "Conflict. The name \"/k8s_POD_pfpod_e2e-tests-port-forwarding-dlxt2_81a3469e-99e1-11e6-89f2-42010af00002_0\" is already in use by container 24666ab8c814d16f986449e504ea0159468ddf8da01897144a770f66dce0e14e. You have to remove (or rename) that container to be able to reuse that name."
|
|
|
|
matches := conflictRE.FindStringSubmatch(msg)
|
|
require.Len(t, matches, 2)
|
|
require.Equal(t, matches[1], "24666ab8c814d16f986449e504ea0159468ddf8da01897144a770f66dce0e14e")
|
|
}
|
|
|
|
func TestGetSecurityOptSeparator(t *testing.T) {
|
|
for c, test := range map[string]struct {
|
|
desc string
|
|
version *semver.Version
|
|
expected rune
|
|
}{
|
|
"older docker version": {
|
|
version: &semver.Version{Major: 1, Minor: 22, Patch: 0},
|
|
expected: ':',
|
|
},
|
|
"changed docker version": {
|
|
version: &semver.Version{Major: 1, Minor: 23, Patch: 0},
|
|
expected: '=',
|
|
},
|
|
"newer docker version": {
|
|
version: &semver.Version{Major: 1, Minor: 24, Patch: 0},
|
|
expected: '=',
|
|
},
|
|
} {
|
|
actual := getSecurityOptSeparator(test.version)
|
|
assert.Equal(t, test.expected, actual, c)
|
|
}
|
|
}
|
|
|
|
func TestEnsureSandboxImageExists(t *testing.T) {
|
|
sandboxImage := "gcr.io/test/image"
|
|
for desc, test := range map[string]struct {
|
|
injectImage bool
|
|
injectErr error
|
|
calls []string
|
|
err bool
|
|
}{
|
|
"should not pull image when it already exists": {
|
|
injectImage: true,
|
|
injectErr: nil,
|
|
calls: []string{"inspect_image"},
|
|
},
|
|
"should pull image when it doesn't exist": {
|
|
injectImage: false,
|
|
injectErr: dockertools.ImageNotFoundError{ID: "image_id"},
|
|
calls: []string{"inspect_image", "pull"},
|
|
},
|
|
"should return error when inspect image fails": {
|
|
injectImage: false,
|
|
injectErr: fmt.Errorf("arbitrary error"),
|
|
calls: []string{"inspect_image"},
|
|
err: true,
|
|
},
|
|
} {
|
|
t.Logf("TestCase: %q", desc)
|
|
_, fakeDocker, _ := newTestDockerService()
|
|
if test.injectImage {
|
|
fakeDocker.InjectImages([]dockertypes.Image{{ID: sandboxImage}})
|
|
}
|
|
fakeDocker.InjectError("inspect_image", test.injectErr)
|
|
err := ensureSandboxImageExists(fakeDocker, sandboxImage)
|
|
assert.NoError(t, fakeDocker.AssertCalls(test.calls))
|
|
assert.Equal(t, test.err, err != nil)
|
|
}
|
|
}
|