50da673592
The io/ioutil package has been deprecated as of Go 1.16, see https://golang.org/doc/go1.16#ioutil. This commit replaces the existing io/ioutil functions with their new definitions in io and os packages. Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>
127 lines
3.7 KiB
Go
127 lines
3.7 KiB
Go
//go:build linux
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// +build linux
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/*
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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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"os"
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"path/filepath"
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"strings"
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"testing"
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"time"
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runtimespec "github.com/opencontainers/runtime-spec/specs-go"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"golang.org/x/sys/unix"
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runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
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)
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func TestSandboxRemoveWithoutIPLeakage(t *testing.T) {
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const hostLocalCheckpointDir = "/var/lib/cni"
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t.Logf("Make sure host-local ipam is in use")
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config, err := CRIConfig()
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require.NoError(t, err)
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fs, err := os.ReadDir(config.NetworkPluginConfDir)
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require.NoError(t, err)
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require.NotEmpty(t, fs)
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f := filepath.Join(config.NetworkPluginConfDir, fs[0].Name())
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cniConfig, err := os.ReadFile(f)
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require.NoError(t, err)
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if !strings.Contains(string(cniConfig), "host-local") {
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t.Skip("host-local ipam is not in use")
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}
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t.Logf("Create a sandbox")
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sbConfig := PodSandboxConfig("sandbox", "remove-without-ip-leakage")
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sb, err := runtimeService.RunPodSandbox(sbConfig, *runtimeHandler)
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require.NoError(t, err)
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defer func() {
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// Make sure the sandbox is cleaned up in any case.
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runtimeService.StopPodSandbox(sb)
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runtimeService.RemovePodSandbox(sb)
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}()
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t.Logf("Get pod information")
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status, info, err := SandboxInfo(sb)
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require.NoError(t, err)
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ip := status.GetNetwork().GetIp()
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require.NotEmpty(t, ip)
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require.NotNil(t, info.RuntimeSpec.Linux)
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var netNS string
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for _, n := range info.RuntimeSpec.Linux.Namespaces {
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if n.Type == runtimespec.NetworkNamespace {
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netNS = n.Path
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}
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}
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require.NotEmpty(t, netNS, "network namespace should be set")
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t.Logf("Should be able to find the pod ip in host-local checkpoint")
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checkIP := func(ip string) bool {
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found := false
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filepath.Walk(hostLocalCheckpointDir, func(_ string, info os.FileInfo, _ error) error {
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if info != nil && info.Name() == ip {
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found = true
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}
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return nil
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})
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return found
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}
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require.True(t, checkIP(ip))
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t.Logf("Kill sandbox container")
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require.NoError(t, KillPid(int(info.Pid)))
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t.Logf("Unmount network namespace")
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require.NoError(t, unix.Unmount(netNS, unix.MNT_DETACH))
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t.Logf("Network namespace should be closed")
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_, info, err = SandboxInfo(sb)
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require.NoError(t, err)
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assert.True(t, info.NetNSClosed)
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t.Logf("Remove network namespace")
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require.NoError(t, os.RemoveAll(netNS))
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t.Logf("Network namespace should still be closed")
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_, info, err = SandboxInfo(sb)
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require.NoError(t, err)
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assert.True(t, info.NetNSClosed)
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t.Logf("Sandbox state should be NOTREADY")
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assert.NoError(t, Eventually(func() (bool, error) {
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status, err := runtimeService.PodSandboxStatus(sb)
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if err != nil {
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return false, err
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}
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return status.GetState() == runtime.PodSandboxState_SANDBOX_NOTREADY, nil
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}, time.Second, 30*time.Second), "sandbox state should become NOTREADY")
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t.Logf("Should still be able to find the pod ip in host-local checkpoint")
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assert.True(t, checkIP(ip))
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t.Logf("Should be able to stop and remove the sandbox")
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assert.NoError(t, runtimeService.StopPodSandbox(sb))
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assert.NoError(t, runtimeService.RemovePodSandbox(sb))
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t.Logf("Should not be able to find the pod ip in host-local checkpoint")
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assert.False(t, checkIP(ip))
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}
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