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host_path.go 5.00 KB
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Mikaël Cluseau 提交于 2016-03-05 12:40 . Introduce subPath in VolumeMount
/*
Copyright 2015 The Kubernetes Authors All rights reserved.
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 e2e
import (
"fmt"
"os"
"path"
"k8s.io/kubernetes/pkg/api"
"k8s.io/kubernetes/pkg/api/unversioned"
"k8s.io/kubernetes/pkg/apimachinery/registered"
client "k8s.io/kubernetes/pkg/client/unversioned"
"k8s.io/kubernetes/test/e2e/framework"
. "github.com/onsi/ginkgo"
)
//TODO : Consolidate this code with the code for emptyDir.
//This will require some smart.
var _ = framework.KubeDescribe("hostPath", func() {
f := framework.NewDefaultFramework("hostpath")
var c *client.Client
var namespace *api.Namespace
BeforeEach(func() {
c = f.Client
namespace = f.Namespace
//cleanup before running the test.
_ = os.Remove("/tmp/test-file")
})
It("should give a volume the correct mode [Conformance]", func() {
volumePath := "/test-volume"
source := &api.HostPathVolumeSource{
Path: "/tmp",
}
pod := testPodWithHostVol(volumePath, source)
pod.Spec.Containers[0].Args = []string{
fmt.Sprintf("--fs_type=%v", volumePath),
fmt.Sprintf("--file_mode=%v", volumePath),
}
framework.TestContainerOutput("hostPath mode", c, pod, 0, []string{
"mode of file \"/test-volume\": dtrwxrwxrwx", // we expect the sticky bit (mode flag t) to be set for the dir
},
namespace.Name)
})
// This test requires mounting a folder into a container with write privileges.
It("should support r/w", func() {
volumePath := "/test-volume"
filePath := path.Join(volumePath, "test-file")
retryDuration := 180
source := &api.HostPathVolumeSource{
Path: "/tmp",
}
pod := testPodWithHostVol(volumePath, source)
pod.Spec.Containers[0].Args = []string{
fmt.Sprintf("--new_file_0644=%v", filePath),
fmt.Sprintf("--file_mode=%v", filePath),
}
pod.Spec.Containers[1].Args = []string{
fmt.Sprintf("--file_content_in_loop=%v", filePath),
fmt.Sprintf("--retry_time=%d", retryDuration),
}
//Read the content of the file with the second container to
//verify volumes being shared properly among containers within the pod.
framework.TestContainerOutput("hostPath r/w", c, pod, 1, []string{
"content of file \"/test-volume/test-file\": mount-tester new file",
}, namespace.Name,
)
})
It("should support subPath [Conformance]", func() {
volumePath := "/test-volume"
subPath := "sub-path"
fileName := "test-file"
retryDuration := 180
filePathInWriter := path.Join(volumePath, fileName)
filePathInReader := path.Join(volumePath, subPath, fileName)
source := &api.HostPathVolumeSource{
Path: "/tmp",
}
pod := testPodWithHostVol(volumePath, source)
// Write the file in the subPath from container 0
container := &pod.Spec.Containers[0]
container.VolumeMounts[0].SubPath = subPath
container.Args = []string{
fmt.Sprintf("--new_file_0644=%v", filePathInWriter),
fmt.Sprintf("--file_mode=%v", filePathInWriter),
}
// Read it from outside the subPath from container 1
pod.Spec.Containers[1].Args = []string{
fmt.Sprintf("--file_content_in_loop=%v", filePathInReader),
fmt.Sprintf("--retry_time=%d", retryDuration),
}
framework.TestContainerOutput("hostPath subPath", c, pod, 1, []string{
"content of file \"" + filePathInReader + "\": mount-tester new file",
}, namespace.Name)
})
})
//These constants are borrowed from the other test.
//const volumeName = "test-volume"
const containerName1 = "test-container-1"
const containerName2 = "test-container-2"
func mount(source *api.HostPathVolumeSource) []api.Volume {
return []api.Volume{
{
Name: volumeName,
VolumeSource: api.VolumeSource{
HostPath: source,
},
},
}
}
//TODO: To merge this with the emptyDir tests, we can make source a lambda.
func testPodWithHostVol(path string, source *api.HostPathVolumeSource) *api.Pod {
podName := "pod-host-path-test"
return &api.Pod{
TypeMeta: unversioned.TypeMeta{
Kind: "Pod",
APIVersion: registered.GroupOrDie(api.GroupName).GroupVersion.String(),
},
ObjectMeta: api.ObjectMeta{
Name: podName,
},
Spec: api.PodSpec{
Containers: []api.Container{
{
Name: containerName1,
Image: "gcr.io/google_containers/mounttest:0.6",
VolumeMounts: []api.VolumeMount{
{
Name: volumeName,
MountPath: path,
},
},
},
{
Name: containerName2,
Image: "gcr.io/google_containers/mounttest:0.6",
VolumeMounts: []api.VolumeMount{
{
Name: volumeName,
MountPath: path,
},
},
},
},
RestartPolicy: api.RestartPolicyNever,
Volumes: mount(source),
},
}
}
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