139 lines
3.8 KiB
Go
139 lines
3.8 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package integration
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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goruntime "runtime"
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"strings"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
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)
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func TestPodHostname(t *testing.T) {
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hostname, err := os.Hostname()
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require.NoError(t, err)
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for name, test := range map[string]struct {
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opts []PodSandboxOpts
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expectedHostname string
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expectErr bool
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needsHostNetwork bool
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}{
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"regular pod with custom hostname": {
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opts: []PodSandboxOpts{
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WithPodHostname("test-hostname"),
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},
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expectedHostname: "test-hostname",
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},
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"host network pod without custom hostname": {
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opts: []PodSandboxOpts{
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WithHostNetwork,
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},
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expectedHostname: hostname,
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needsHostNetwork: true,
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},
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"host network pod with custom hostname should fail": {
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opts: []PodSandboxOpts{
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WithHostNetwork,
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WithPodHostname("test-hostname"),
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},
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expectErr: true,
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needsHostNetwork: true,
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},
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} {
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t.Run(name, func(t *testing.T) {
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if test.needsHostNetwork && goruntime.GOOS == "windows" {
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t.Skip("Skipped on Windows.")
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}
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testPodLogDir, err := ioutil.TempDir("/tmp", "hostname")
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require.NoError(t, err)
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defer os.RemoveAll(testPodLogDir)
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opts := append(test.opts, WithPodLogDirectory(testPodLogDir))
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t.Log("Create a sandbox with hostname")
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sbConfig := PodSandboxConfig("sandbox", "hostname", opts...)
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sb, err := runtimeService.RunPodSandbox(sbConfig, *runtimeHandler)
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if err != nil {
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if !test.expectErr {
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t.Fatalf("Unexpected RunPodSandbox error: %v", err)
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}
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return
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}
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// Make sure the sandbox is cleaned up.
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defer func() {
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assert.NoError(t, runtimeService.StopPodSandbox(sb))
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assert.NoError(t, runtimeService.RemovePodSandbox(sb))
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}()
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if test.expectErr {
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t.Fatalf("Expected RunPodSandbox to return error")
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}
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var (
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testImage = GetImage(BusyBox)
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containerName = "test-container"
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)
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EnsureImageExists(t, testImage)
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t.Log("Create a container to print env")
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cnConfig := ContainerConfig(
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containerName,
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testImage,
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WithCommand("sh", "-c",
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"echo -n /etc/hostname= && hostname && env"),
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WithLogPath(containerName),
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)
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cn, err := runtimeService.CreateContainer(sb, cnConfig, sbConfig)
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require.NoError(t, err)
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t.Log("Start the container")
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require.NoError(t, runtimeService.StartContainer(cn))
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t.Log("Wait for container to finish running")
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require.NoError(t, Eventually(func() (bool, error) {
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s, err := runtimeService.ContainerStatus(cn)
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if err != nil {
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return false, err
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}
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if s.GetState() == runtime.ContainerState_CONTAINER_EXITED {
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return true, nil
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}
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return false, nil
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}, time.Second, 30*time.Second))
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content, err := ioutil.ReadFile(filepath.Join(testPodLogDir, containerName))
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assert.NoError(t, err)
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t.Log("Search hostname env in container log")
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if goruntime.GOOS == "windows" {
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assert.Contains(t, string(content), "COMPUTERNAME="+strings.ToUpper(test.expectedHostname))
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} else {
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assert.Contains(t, string(content), "HOSTNAME="+test.expectedHostname)
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}
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t.Log("Search /etc/hostname content in container log")
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assert.Contains(t, string(content), "/etc/hostname="+test.expectedHostname)
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})
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}
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}
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